diff --git a/BUILD b/BUILD
index 091669917be..3269858a692 100644
--- a/BUILD
+++ b/BUILD
@@ -57,6 +57,7 @@ cc_library(
     "src/core/profiling/basic_timers.c",
     "src/core/profiling/stap_timers.c",
     "src/core/support/alloc.c",
+    "src/core/support/avl.c",
     "src/core/support/cmdline.c",
     "src/core/support/cpu_iphone.c",
     "src/core/support/cpu_linux.c",
@@ -101,6 +102,7 @@ cc_library(
     "include/grpc/support/atm_gcc_atomic.h",
     "include/grpc/support/atm_gcc_sync.h",
     "include/grpc/support/atm_win32.h",
+    "include/grpc/support/avl.h",
     "include/grpc/support/cmdline.h",
     "include/grpc/support/cpu.h",
     "include/grpc/support/histogram.h",
@@ -981,6 +983,7 @@ objc_library(
     "src/core/profiling/basic_timers.c",
     "src/core/profiling/stap_timers.c",
     "src/core/support/alloc.c",
+    "src/core/support/avl.c",
     "src/core/support/cmdline.c",
     "src/core/support/cpu_iphone.c",
     "src/core/support/cpu_linux.c",
@@ -1025,6 +1028,7 @@ objc_library(
     "include/grpc/support/atm_gcc_atomic.h",
     "include/grpc/support/atm_gcc_sync.h",
     "include/grpc/support/atm_win32.h",
+    "include/grpc/support/avl.h",
     "include/grpc/support/cmdline.h",
     "include/grpc/support/cpu.h",
     "include/grpc/support/histogram.h",
diff --git a/Makefile b/Makefile
index f4a305f1f15..a09820163cf 100644
--- a/Makefile
+++ b/Makefile
@@ -793,6 +793,7 @@ fling_stream_test: $(BINDIR)/$(CONFIG)/fling_stream_test
 fling_test: $(BINDIR)/$(CONFIG)/fling_test
 gen_hpack_tables: $(BINDIR)/$(CONFIG)/gen_hpack_tables
 gen_legal_metadata_characters: $(BINDIR)/$(CONFIG)/gen_legal_metadata_characters
+gpr_avl_test: $(BINDIR)/$(CONFIG)/gpr_avl_test
 gpr_cmdline_test: $(BINDIR)/$(CONFIG)/gpr_cmdline_test
 gpr_cpu_test: $(BINDIR)/$(CONFIG)/gpr_cpu_test
 gpr_env_test: $(BINDIR)/$(CONFIG)/gpr_env_test
@@ -1871,7 +1872,7 @@ endif
 
 buildtests: buildtests_c buildtests_cxx buildtests_zookeeper
 
-buildtests_c: privatelibs_c $(BINDIR)/$(CONFIG)/alpn_test $(BINDIR)/$(CONFIG)/bin_encoder_test $(BINDIR)/$(CONFIG)/chttp2_hpack_encoder_test $(BINDIR)/$(CONFIG)/chttp2_status_conversion_test $(BINDIR)/$(CONFIG)/chttp2_stream_map_test $(BINDIR)/$(CONFIG)/compression_test $(BINDIR)/$(CONFIG)/dualstack_socket_test $(BINDIR)/$(CONFIG)/endpoint_pair_test $(BINDIR)/$(CONFIG)/fd_conservation_posix_test $(BINDIR)/$(CONFIG)/fd_posix_test $(BINDIR)/$(CONFIG)/fling_client $(BINDIR)/$(CONFIG)/fling_server $(BINDIR)/$(CONFIG)/fling_stream_test $(BINDIR)/$(CONFIG)/fling_test $(BINDIR)/$(CONFIG)/gpr_cmdline_test $(BINDIR)/$(CONFIG)/gpr_cpu_test $(BINDIR)/$(CONFIG)/gpr_env_test $(BINDIR)/$(CONFIG)/gpr_file_test $(BINDIR)/$(CONFIG)/gpr_histogram_test $(BINDIR)/$(CONFIG)/gpr_host_port_test $(BINDIR)/$(CONFIG)/gpr_log_test $(BINDIR)/$(CONFIG)/gpr_slice_buffer_test $(BINDIR)/$(CONFIG)/gpr_slice_test $(BINDIR)/$(CONFIG)/gpr_stack_lockfree_test $(BINDIR)/$(CONFIG)/gpr_string_test $(BINDIR)/$(CONFIG)/gpr_sync_test $(BINDIR)/$(CONFIG)/gpr_thd_test $(BINDIR)/$(CONFIG)/gpr_time_test $(BINDIR)/$(CONFIG)/gpr_tls_test $(BINDIR)/$(CONFIG)/gpr_useful_test $(BINDIR)/$(CONFIG)/grpc_auth_context_test $(BINDIR)/$(CONFIG)/grpc_base64_test $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test $(BINDIR)/$(CONFIG)/grpc_channel_args_test $(BINDIR)/$(CONFIG)/grpc_channel_stack_test $(BINDIR)/$(CONFIG)/grpc_completion_queue_test $(BINDIR)/$(CONFIG)/grpc_credentials_test $(BINDIR)/$(CONFIG)/grpc_json_token_test $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test $(BINDIR)/$(CONFIG)/grpc_security_connector_test $(BINDIR)/$(CONFIG)/hpack_parser_test $(BINDIR)/$(CONFIG)/hpack_table_test $(BINDIR)/$(CONFIG)/httpcli_format_request_test $(BINDIR)/$(CONFIG)/httpcli_parser_test $(BINDIR)/$(CONFIG)/httpcli_test $(BINDIR)/$(CONFIG)/json_rewrite $(BINDIR)/$(CONFIG)/json_rewrite_test $(BINDIR)/$(CONFIG)/json_test $(BINDIR)/$(CONFIG)/lame_client_test $(BINDIR)/$(CONFIG)/lb_policies_test $(BINDIR)/$(CONFIG)/message_compress_test $(BINDIR)/$(CONFIG)/multi_init_test $(BINDIR)/$(CONFIG)/multiple_server_queues_test $(BINDIR)/$(CONFIG)/murmur_hash_test $(BINDIR)/$(CONFIG)/no_server_test $(BINDIR)/$(CONFIG)/resolve_address_test $(BINDIR)/$(CONFIG)/secure_endpoint_test $(BINDIR)/$(CONFIG)/sockaddr_utils_test $(BINDIR)/$(CONFIG)/tcp_client_posix_test $(BINDIR)/$(CONFIG)/tcp_posix_test $(BINDIR)/$(CONFIG)/tcp_server_posix_test $(BINDIR)/$(CONFIG)/time_averaged_stats_test $(BINDIR)/$(CONFIG)/timeout_encoding_test $(BINDIR)/$(CONFIG)/timer_heap_test $(BINDIR)/$(CONFIG)/timer_list_test $(BINDIR)/$(CONFIG)/timers_test $(BINDIR)/$(CONFIG)/transport_metadata_test $(BINDIR)/$(CONFIG)/transport_security_test $(BINDIR)/$(CONFIG)/udp_server_test $(BINDIR)/$(CONFIG)/uri_parser_test $(BINDIR)/$(CONFIG)/workqueue_test $(BINDIR)/$(CONFIG)/h2_compress_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_compress_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_compress_call_creds_test $(BINDIR)/$(CONFIG)/h2_compress_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_compress_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_compress_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_compress_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_compress_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_compress_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_compress_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_compress_channel_connectivity_test $(BINDIR)/$(CONFIG)/h2_compress_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_compress_default_host_test $(BINDIR)/$(CONFIG)/h2_compress_disappearing_server_test $(BINDIR)/$(CONFIG)/h2_compress_empty_batch_test $(BINDIR)/$(CONFIG)/h2_compress_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_compress_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_compress_hpack_size_test $(BINDIR)/$(CONFIG)/h2_compress_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_compress_large_metadata_test $(BINDIR)/$(CONFIG)/h2_compress_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_compress_max_message_length_test $(BINDIR)/$(CONFIG)/h2_compress_metadata_test $(BINDIR)/$(CONFIG)/h2_compress_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_compress_no_op_test $(BINDIR)/$(CONFIG)/h2_compress_payload_test $(BINDIR)/$(CONFIG)/h2_compress_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_compress_registered_call_test $(BINDIR)/$(CONFIG)/h2_compress_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_compress_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_compress_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_compress_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_compress_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_compress_simple_delayed_request_test $(BINDIR)/$(CONFIG)/h2_compress_simple_request_test $(BINDIR)/$(CONFIG)/h2_compress_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_fakesec_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_fakesec_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_fakesec_call_creds_test $(BINDIR)/$(CONFIG)/h2_fakesec_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_fakesec_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_fakesec_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_fakesec_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_fakesec_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_fakesec_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_fakesec_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_fakesec_channel_connectivity_test $(BINDIR)/$(CONFIG)/h2_fakesec_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_fakesec_default_host_test $(BINDIR)/$(CONFIG)/h2_fakesec_disappearing_server_test $(BINDIR)/$(CONFIG)/h2_fakesec_empty_batch_test $(BINDIR)/$(CONFIG)/h2_fakesec_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_fakesec_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_fakesec_hpack_size_test $(BINDIR)/$(CONFIG)/h2_fakesec_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_fakesec_large_metadata_test $(BINDIR)/$(CONFIG)/h2_fakesec_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_fakesec_max_message_length_test $(BINDIR)/$(CONFIG)/h2_fakesec_metadata_test $(BINDIR)/$(CONFIG)/h2_fakesec_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_fakesec_no_op_test $(BINDIR)/$(CONFIG)/h2_fakesec_payload_test $(BINDIR)/$(CONFIG)/h2_fakesec_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_fakesec_registered_call_test $(BINDIR)/$(CONFIG)/h2_fakesec_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_fakesec_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_fakesec_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_fakesec_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_fakesec_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_fakesec_simple_delayed_request_test $(BINDIR)/$(CONFIG)/h2_fakesec_simple_request_test $(BINDIR)/$(CONFIG)/h2_fakesec_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_full_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_full_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_full_call_creds_test $(BINDIR)/$(CONFIG)/h2_full_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_full_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_full_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_full_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_full_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_full_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_full_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_full_channel_connectivity_test $(BINDIR)/$(CONFIG)/h2_full_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_full_default_host_test $(BINDIR)/$(CONFIG)/h2_full_disappearing_server_test $(BINDIR)/$(CONFIG)/h2_full_empty_batch_test $(BINDIR)/$(CONFIG)/h2_full_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_full_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_full_hpack_size_test $(BINDIR)/$(CONFIG)/h2_full_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_full_large_metadata_test $(BINDIR)/$(CONFIG)/h2_full_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_full_max_message_length_test $(BINDIR)/$(CONFIG)/h2_full_metadata_test $(BINDIR)/$(CONFIG)/h2_full_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_full_no_op_test $(BINDIR)/$(CONFIG)/h2_full_payload_test $(BINDIR)/$(CONFIG)/h2_full_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_full_registered_call_test $(BINDIR)/$(CONFIG)/h2_full_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_full_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_full_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_full_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_full_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_full_simple_delayed_request_test $(BINDIR)/$(CONFIG)/h2_full_simple_request_test $(BINDIR)/$(CONFIG)/h2_full_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_full+poll_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_full+poll_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_full+poll_call_creds_test $(BINDIR)/$(CONFIG)/h2_full+poll_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_full+poll_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_full+poll_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_full+poll_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_full+poll_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_full+poll_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_full+poll_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_full+poll_channel_connectivity_test $(BINDIR)/$(CONFIG)/h2_full+poll_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_full+poll_default_host_test $(BINDIR)/$(CONFIG)/h2_full+poll_disappearing_server_test $(BINDIR)/$(CONFIG)/h2_full+poll_empty_batch_test $(BINDIR)/$(CONFIG)/h2_full+poll_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_full+poll_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_full+poll_hpack_size_test $(BINDIR)/$(CONFIG)/h2_full+poll_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_full+poll_large_metadata_test $(BINDIR)/$(CONFIG)/h2_full+poll_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_full+poll_max_message_length_test $(BINDIR)/$(CONFIG)/h2_full+poll_metadata_test $(BINDIR)/$(CONFIG)/h2_full+poll_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_full+poll_no_op_test $(BINDIR)/$(CONFIG)/h2_full+poll_payload_test $(BINDIR)/$(CONFIG)/h2_full+poll_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_full+poll_registered_call_test $(BINDIR)/$(CONFIG)/h2_full+poll_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_full+poll_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_full+poll_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_full+poll_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_full+poll_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_full+poll_simple_delayed_request_test $(BINDIR)/$(CONFIG)/h2_full+poll_simple_request_test $(BINDIR)/$(CONFIG)/h2_full+poll_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_oauth2_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_oauth2_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_oauth2_call_creds_test $(BINDIR)/$(CONFIG)/h2_oauth2_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_oauth2_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_oauth2_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_oauth2_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_oauth2_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_oauth2_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_oauth2_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_oauth2_channel_connectivity_test $(BINDIR)/$(CONFIG)/h2_oauth2_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_oauth2_default_host_test $(BINDIR)/$(CONFIG)/h2_oauth2_disappearing_server_test $(BINDIR)/$(CONFIG)/h2_oauth2_empty_batch_test $(BINDIR)/$(CONFIG)/h2_oauth2_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_oauth2_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_oauth2_hpack_size_test $(BINDIR)/$(CONFIG)/h2_oauth2_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_oauth2_large_metadata_test $(BINDIR)/$(CONFIG)/h2_oauth2_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_oauth2_max_message_length_test $(BINDIR)/$(CONFIG)/h2_oauth2_metadata_test $(BINDIR)/$(CONFIG)/h2_oauth2_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_oauth2_no_op_test $(BINDIR)/$(CONFIG)/h2_oauth2_payload_test $(BINDIR)/$(CONFIG)/h2_oauth2_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_oauth2_registered_call_test $(BINDIR)/$(CONFIG)/h2_oauth2_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_oauth2_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_oauth2_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_oauth2_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_oauth2_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_oauth2_simple_delayed_request_test $(BINDIR)/$(CONFIG)/h2_oauth2_simple_request_test $(BINDIR)/$(CONFIG)/h2_oauth2_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_proxy_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_proxy_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_proxy_call_creds_test $(BINDIR)/$(CONFIG)/h2_proxy_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_proxy_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_proxy_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_proxy_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_proxy_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_proxy_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_proxy_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_proxy_default_host_test $(BINDIR)/$(CONFIG)/h2_proxy_disappearing_server_test $(BINDIR)/$(CONFIG)/h2_proxy_empty_batch_test $(BINDIR)/$(CONFIG)/h2_proxy_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_proxy_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_proxy_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_proxy_large_metadata_test $(BINDIR)/$(CONFIG)/h2_proxy_max_message_length_test $(BINDIR)/$(CONFIG)/h2_proxy_metadata_test $(BINDIR)/$(CONFIG)/h2_proxy_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_proxy_no_op_test $(BINDIR)/$(CONFIG)/h2_proxy_payload_test $(BINDIR)/$(CONFIG)/h2_proxy_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_proxy_registered_call_test $(BINDIR)/$(CONFIG)/h2_proxy_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_proxy_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_proxy_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_proxy_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_proxy_simple_delayed_request_test $(BINDIR)/$(CONFIG)/h2_proxy_simple_request_test $(BINDIR)/$(CONFIG)/h2_proxy_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_sockpair_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair_call_creds_test $(BINDIR)/$(CONFIG)/h2_sockpair_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_sockpair_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_sockpair_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_sockpair_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_sockpair_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_sockpair_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_sockpair_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_sockpair_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair_empty_batch_test $(BINDIR)/$(CONFIG)/h2_sockpair_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_sockpair_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_sockpair_hpack_size_test $(BINDIR)/$(CONFIG)/h2_sockpair_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_sockpair_large_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_sockpair_max_message_length_test $(BINDIR)/$(CONFIG)/h2_sockpair_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_sockpair_no_op_test $(BINDIR)/$(CONFIG)/h2_sockpair_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_sockpair_registered_call_test $(BINDIR)/$(CONFIG)/h2_sockpair_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_sockpair_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_sockpair_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_sockpair_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_sockpair_simple_request_test $(BINDIR)/$(CONFIG)/h2_sockpair_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_call_creds_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_empty_batch_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_high_initial_seqno_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_invoke_large_request_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_large_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_max_message_length_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_negative_deadline_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_no_op_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_registered_call_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_request_with_flags_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_request_with_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_server_finishes_request_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_shutdown_finishes_calls_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_simple_request_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_trailing_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_bad_hostname_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_binary_metadata_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_call_creds_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_after_accept_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_after_client_done_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_with_status_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_census_simple_request_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_compressed_payload_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_empty_batch_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_high_initial_seqno_test 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$(BINDIR)/$(CONFIG)/h2_sockpair_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_negative_deadline_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_no_op_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_ping_pong_streaming_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_registered_call_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_request_with_flags_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_request_with_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_server_finishes_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_shutdown_finishes_calls_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_shutdown_finishes_tags_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_trailing_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_bad_hostname_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_binary_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_after_accept_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_after_client_done_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_after_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_before_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_in_a_vacuum_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_cancel_with_status_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_census_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_compressed_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_empty_batch_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_graceful_server_shutdown_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_high_initial_seqno_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_invoke_large_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_large_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_max_concurrent_streams_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_max_message_length_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_negative_deadline_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_no_op_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_ping_pong_streaming_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_registered_call_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_request_with_flags_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_request_with_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_server_finishes_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_shutdown_finishes_calls_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_shutdown_finishes_tags_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair+trace_trailing_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_bad_hostname_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_binary_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_after_accept_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_after_client_done_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_after_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_before_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_in_a_vacuum_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_cancel_with_status_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_census_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_compressed_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_empty_batch_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_graceful_server_shutdown_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_high_initial_seqno_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_hpack_size_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_invoke_large_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_large_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_max_concurrent_streams_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_max_message_length_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_negative_deadline_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_no_op_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_ping_pong_streaming_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_registered_call_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_request_with_flags_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_request_with_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_server_finishes_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_shutdown_finishes_calls_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_shutdown_finishes_tags_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_trailing_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_bad_hostname_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_binary_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_cancel_after_accept_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_cancel_after_client_done_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_cancel_after_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_cancel_before_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_cancel_in_a_vacuum_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_cancel_with_status_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_census_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_channel_connectivity_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_compressed_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_default_host_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_disappearing_server_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_empty_batch_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_graceful_server_shutdown_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_high_initial_seqno_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_hpack_size_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_invoke_large_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_large_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_max_concurrent_streams_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_max_message_length_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_negative_deadline_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_no_op_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_ping_pong_streaming_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_registered_call_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_request_with_flags_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_request_with_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_server_finishes_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_shutdown_finishes_calls_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_shutdown_finishes_tags_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_simple_delayed_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uchannel_trailing_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_bad_hostname_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_binary_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_cancel_after_accept_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_cancel_after_client_done_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_cancel_after_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_cancel_before_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_cancel_in_a_vacuum_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_cancel_with_status_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_census_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_channel_connectivity_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_compressed_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_disappearing_server_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_empty_batch_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_graceful_server_shutdown_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_high_initial_seqno_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_hpack_size_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_invoke_large_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_large_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_max_concurrent_streams_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_max_message_length_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_negative_deadline_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_no_op_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_ping_pong_streaming_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_registered_call_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_request_with_flags_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_request_with_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_server_finishes_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_shutdown_finishes_calls_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_shutdown_finishes_tags_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_simple_delayed_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds_trailing_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_bad_hostname_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_binary_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_cancel_after_accept_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_cancel_after_client_done_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_cancel_after_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_cancel_before_invoke_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_cancel_in_a_vacuum_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_cancel_with_status_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_census_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_channel_connectivity_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_compressed_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_disappearing_server_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_empty_batch_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_graceful_server_shutdown_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_high_initial_seqno_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_hpack_size_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_invoke_large_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_large_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_max_concurrent_streams_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_max_message_length_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_metadata_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_negative_deadline_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_no_op_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_ping_pong_streaming_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_registered_call_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_request_with_flags_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_request_with_payload_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_server_finishes_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_shutdown_finishes_calls_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_shutdown_finishes_tags_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_simple_delayed_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_simple_request_nosec_test $(BINDIR)/$(CONFIG)/h2_uds+poll_trailing_metadata_nosec_test $(BINDIR)/$(CONFIG)/connection_prefix_bad_client_test $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test
 
 buildtests_cxx: buildtests_zookeeper privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/auth_property_iterator_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_string_ref_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/metrics_client $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/reconnect_interop_client $(BINDIR)/$(CONFIG)/reconnect_interop_server $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/secure_sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/shutdown_test $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/streaming_throughput_test $(BINDIR)/$(CONFIG)/stress_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_stress_test
 
@@ -1911,6 +1912,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/fling_stream_test || ( echo test fling_stream_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fling_test"
 	$(Q) $(BINDIR)/$(CONFIG)/fling_test || ( echo test fling_test failed ; exit 1 )
+	$(E) "[RUN]     Testing gpr_avl_test"
+	$(Q) $(BINDIR)/$(CONFIG)/gpr_avl_test || ( echo test gpr_avl_test failed ; exit 1 )
 	$(E) "[RUN]     Testing gpr_cmdline_test"
 	$(Q) $(BINDIR)/$(CONFIG)/gpr_cmdline_test || ( echo test gpr_cmdline_test failed ; exit 1 )
 	$(E) "[RUN]     Testing gpr_cpu_test"
@@ -4364,6 +4367,7 @@ LIBGPR_SRC = \
     src/core/profiling/basic_timers.c \
     src/core/profiling/stap_timers.c \
     src/core/support/alloc.c \
+    src/core/support/avl.c \
     src/core/support/cmdline.c \
     src/core/support/cpu_iphone.c \
     src/core/support/cpu_linux.c \
@@ -4408,6 +4412,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/support/atm_gcc_atomic.h \
     include/grpc/support/atm_gcc_sync.h \
     include/grpc/support/atm_win32.h \
+    include/grpc/support/avl.h \
     include/grpc/support/cmdline.h \
     include/grpc/support/cpu.h \
     include/grpc/support/histogram.h \
@@ -7594,6 +7599,35 @@ endif
 endif
 
 
+GPR_AVL_TEST_SRC = \
+    test/core/support/avl_test.c \
+
+GPR_AVL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_AVL_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/gpr_avl_test: openssl_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/gpr_avl_test: $(GPR_AVL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(GPR_AVL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/gpr_avl_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/support/avl_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_gpr_avl_test: $(GPR_AVL_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(GPR_AVL_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 GPR_CMDLINE_TEST_SRC = \
     test/core/support/cmdline_test.c \
 
diff --git a/binding.gyp b/binding.gyp
index 6ccd15bb8d7..950a310914d 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -97,6 +97,7 @@
         'src/core/profiling/basic_timers.c',
         'src/core/profiling/stap_timers.c',
         'src/core/support/alloc.c',
+        'src/core/support/avl.c',
         'src/core/support/cmdline.c',
         'src/core/support/cpu_iphone.c',
         'src/core/support/cpu_linux.c',
diff --git a/build.yaml b/build.yaml
index 7f7ae1c66b0..293f84be644 100644
--- a/build.yaml
+++ b/build.yaml
@@ -376,6 +376,7 @@ libs:
   - include/grpc/support/atm_gcc_atomic.h
   - include/grpc/support/atm_gcc_sync.h
   - include/grpc/support/atm_win32.h
+  - include/grpc/support/avl.h
   - include/grpc/support/cmdline.h
   - include/grpc/support/cpu.h
   - include/grpc/support/histogram.h
@@ -413,6 +414,7 @@ libs:
   - src/core/profiling/basic_timers.c
   - src/core/profiling/stap_timers.c
   - src/core/support/alloc.c
+  - src/core/support/avl.c
   - src/core/support/cmdline.c
   - src/core/support/cpu_iphone.c
   - src/core/support/cpu_linux.c
@@ -972,6 +974,14 @@ targets:
   src:
   - tools/codegen/core/gen_legal_metadata_characters.c
   deps: []
+- name: gpr_avl_test
+  build: test
+  language: c
+  src:
+  - test/core/support/avl_test.c
+  deps:
+  - gpr_test_util
+  - gpr
 - name: gpr_cmdline_test
   build: test
   language: c
diff --git a/gRPC.podspec b/gRPC.podspec
index ac80ee02a9a..a54a79be608 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -78,6 +78,7 @@ Pod::Spec.new do |s|
                       'include/grpc/support/atm_gcc_atomic.h',
                       'include/grpc/support/atm_gcc_sync.h',
                       'include/grpc/support/atm_win32.h',
+                      'include/grpc/support/avl.h',
                       'include/grpc/support/cmdline.h',
                       'include/grpc/support/cpu.h',
                       'include/grpc/support/histogram.h',
@@ -103,6 +104,7 @@ Pod::Spec.new do |s|
                       'src/core/profiling/basic_timers.c',
                       'src/core/profiling/stap_timers.c',
                       'src/core/support/alloc.c',
+                      'src/core/support/avl.c',
                       'src/core/support/cmdline.c',
                       'src/core/support/cpu_iphone.c',
                       'src/core/support/cpu_linux.c',
diff --git a/include/grpc/support/avl.h b/include/grpc/support/avl.h
new file mode 100644
index 00000000000..d462f52bfe0
--- /dev/null
+++ b/include/grpc/support/avl.h
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_AVL_H
+#define GRPC_SUPPORT_AVL_H
+
+#include <grpc/support/sync.h>
+
+/** internal node of an AVL tree */
+typedef struct gpr_avl_node {
+  gpr_refcount refs;
+  void *key;
+  void *value;
+  struct gpr_avl_node *left;
+  struct gpr_avl_node *right;
+  long height;
+} gpr_avl_node;
+
+typedef struct gpr_avl_vtable {
+  /** destroy a key */
+  void (*destroy_key)(void *key);
+  /** copy a key, returning new value */
+  void *(*copy_key)(void *key);
+  /** compare key1, key2; return <0 if key1 < key2,
+      >0 if key1 > key2, 0 if key1 == key2 */
+  long (*compare_keys)(void *key1, void *key2);
+  /** destroy a value */
+  void (*destroy_value)(void *value);
+  /** copy a value */
+  void *(*copy_value)(void *value);
+} gpr_avl_vtable;
+
+/** "pointer" to an AVL tree - this is a reference
+    counted object - use gpr_avl_ref to add a reference,
+    gpr_avl_unref when done with a reference */
+typedef struct gpr_avl {
+  const gpr_avl_vtable *vtable;
+  gpr_avl_node *root;
+} gpr_avl;
+
+/** create an immutable AVL tree */
+gpr_avl gpr_avl_create(const gpr_avl_vtable *vtable);
+/** add a reference to an existing tree - returns
+    the tree as a convenience */
+gpr_avl gpr_avl_ref(gpr_avl avl);
+/** remove a reference to a tree - destroying it if there
+    are no references left */
+void gpr_avl_unref(gpr_avl avl);
+/** return a new tree with (key, value) added to avl.
+    implicitly unrefs avl to allow easy chaining.
+    if key exists in avl, the new tree's key entry updated
+    (i.e. a duplicate is not created) */
+gpr_avl gpr_avl_add(gpr_avl avl, void *key, void *value);
+/** return a new tree with key deleted */
+gpr_avl gpr_avl_remove(gpr_avl avl, void *key);
+/** lookup key, and return the associated value.
+    does not mutate avl.
+    returns NULL if key is not found. */
+void *gpr_avl_get(gpr_avl avl, void *key);
+
+#endif
diff --git a/src/core/iomgr/tcp_server.h b/src/core/iomgr/tcp_server.h
index 882635f6388..3df36174e7b 100644
--- a/src/core/iomgr/tcp_server.h
+++ b/src/core/iomgr/tcp_server.h
@@ -39,6 +39,9 @@
 /* Forward decl of grpc_tcp_server */
 typedef struct grpc_tcp_server grpc_tcp_server;
 
+/* Forward decl of grpc_tcp_listener */
+typedef struct grpc_tcp_listener grpc_tcp_listener;
+
 /* Called for newly connected TCP connections. */
 typedef void (*grpc_tcp_server_cb)(grpc_exec_ctx *exec_ctx, void *arg,
                                    grpc_endpoint *ep);
@@ -51,19 +54,18 @@ void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *server,
                            grpc_pollset **pollsets, size_t pollset_count,
                            grpc_tcp_server_cb on_accept_cb, void *cb_arg);
 
-/* Add a port to the server, returning port number on success, or negative
-   on failure.
+/* Add a port to the server, returning the newly created listener on success,
+   or a null pointer on failure.
 
    The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
    both IPv4 and IPv6 connections, but :: is the preferred style.  This usually
    creates one socket, but possibly two on systems which support IPv6,
-   but not dualstack sockets.
-
-   For raw access to the underlying sockets, see grpc_tcp_server_get_fd(). */
+   but not dualstack sockets. */
 /* TODO(ctiller): deprecate this, and make grpc_tcp_server_add_ports to handle
                   all of the multiple socket port matching logic in one place */
-int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
-                             size_t addr_len);
+grpc_tcp_listener *grpc_tcp_server_add_port(grpc_tcp_server *s,
+                                            const void *addr,
+                                            size_t addr_len);
 
 /* Returns the file descriptor of the Nth listening socket on this server,
    or -1 if the index is out of bounds.
@@ -75,4 +77,8 @@ int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned index);
 void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *server,
                              grpc_closure *closure);
 
+int grpc_tcp_listener_get_port(grpc_tcp_listener *listener);
+void grpc_tcp_listener_ref(grpc_tcp_listener *listener);
+void grpc_tcp_listener_unref(grpc_tcp_listener *listener);
+
 #endif /* GRPC_INTERNAL_CORE_IOMGR_TCP_SERVER_H */
diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/iomgr/tcp_server_posix.c
index 99c76dcbe9a..1439dfcd6ed 100644
--- a/src/core/iomgr/tcp_server_posix.c
+++ b/src/core/iomgr/tcp_server_posix.c
@@ -67,14 +67,13 @@
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 
-#define INIT_PORT_CAP 2
 #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
 
 static gpr_once s_init_max_accept_queue_size;
 static int s_max_accept_queue_size;
 
 /* one listening port */
-typedef struct {
+struct grpc_tcp_listener {
   int fd;
   grpc_fd *emfd;
   grpc_tcp_server *server;
@@ -84,9 +83,18 @@ typedef struct {
     struct sockaddr_un un;
   } addr;
   size_t addr_len;
+  int port;
   grpc_closure read_closure;
   grpc_closure destroyed_closure;
-} server_port;
+  gpr_refcount refs;
+  struct grpc_tcp_listener *next;
+  /* When we add a listener, more than one can be created, mainly because of
+     IPv6. A sibling will still be in the normal list, but will be flagged
+     as such. Any action, such as ref or unref, will affect all of the
+     siblings in the list. */
+  struct grpc_tcp_listener *sibling;
+  int is_sibling;
+};
 
 static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) {
   struct stat st;
@@ -112,10 +120,9 @@ struct grpc_tcp_server {
   /* is this server shutting down? (boolean) */
   int shutdown;
 
-  /* all listening ports */
-  server_port *ports;
-  size_t nports;
-  size_t port_capacity;
+  /* linked list of server ports */
+  grpc_tcp_listener *head;
+  unsigned nports;
 
   /* shutdown callback */
   grpc_closure *shutdown_complete;
@@ -134,9 +141,8 @@ grpc_tcp_server *grpc_tcp_server_create(void) {
   s->shutdown = 0;
   s->on_accept_cb = NULL;
   s->on_accept_cb_arg = NULL;
-  s->ports = gpr_malloc(sizeof(server_port) * INIT_PORT_CAP);
+  s->head = NULL;
   s->nports = 0;
-  s->port_capacity = INIT_PORT_CAP;
   return s;
 }
 
@@ -145,7 +151,12 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
 
   gpr_mu_destroy(&s->mu);
 
-  gpr_free(s->ports);
+  while (s->head) {
+    grpc_tcp_listener *sp = s->head;
+    s->head = sp->next;
+    grpc_tcp_listener_unref(sp);
+  }
+
   gpr_free(s);
 }
 
@@ -166,8 +177,6 @@ static void destroyed_port(grpc_exec_ctx *exec_ctx, void *server, int success) {
    events will be received on them - at this point it's safe to destroy
    things */
 static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
-  size_t i;
-
   /* delete ALL the things */
   gpr_mu_lock(&s->mu);
 
@@ -176,9 +185,9 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
     return;
   }
 
-  if (s->nports) {
-    for (i = 0; i < s->nports; i++) {
-      server_port *sp = &s->ports[i];
+  if (s->head) {
+    grpc_tcp_listener *sp;
+    for (sp = s->head; sp; sp = sp->next) {
       if (sp->addr.sockaddr.sa_family == AF_UNIX) {
         unlink_if_unix_domain_socket(&sp->addr.un);
       }
@@ -196,7 +205,6 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
 
 void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
                              grpc_closure *closure) {
-  size_t i;
   gpr_mu_lock(&s->mu);
 
   GPR_ASSERT(!s->shutdown);
@@ -206,8 +214,9 @@ void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
 
   /* shutdown all fd's */
   if (s->active_ports) {
-    for (i = 0; i < s->nports; i++) {
-      grpc_fd_shutdown(exec_ctx, s->ports[i].emfd);
+    grpc_tcp_listener *sp;
+    for (sp = s->head; sp; sp = sp->next) {
+      grpc_fd_shutdown(exec_ctx, sp->emfd);
     }
     gpr_mu_unlock(&s->mu);
   } else {
@@ -298,7 +307,7 @@ error:
 
 /* event manager callback when reads are ready */
 static void on_read(grpc_exec_ctx *exec_ctx, void *arg, int success) {
-  server_port *sp = arg;
+  grpc_tcp_listener *sp = arg;
   grpc_fd *fdobj;
   size_t i;
 
@@ -364,9 +373,10 @@ error:
   }
 }
 
-static int add_socket_to_server(grpc_tcp_server *s, int fd,
-                                const struct sockaddr *addr, size_t addr_len) {
-  server_port *sp;
+static grpc_tcp_listener *add_socket_to_server(grpc_tcp_server *s, int fd,
+                                         const struct sockaddr *addr,
+                                         size_t addr_len) {
+  grpc_tcp_listener *sp = NULL;
   int port;
   char *addr_str;
   char *name;
@@ -376,32 +386,35 @@ static int add_socket_to_server(grpc_tcp_server *s, int fd,
     grpc_sockaddr_to_string(&addr_str, (struct sockaddr *)&addr, 1);
     gpr_asprintf(&name, "tcp-server-listener:%s", addr_str);
     gpr_mu_lock(&s->mu);
+    s->nports++;
     GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
-    /* append it to the list under a lock */
-    if (s->nports == s->port_capacity) {
-      s->port_capacity *= 2;
-      s->ports = gpr_realloc(s->ports, sizeof(server_port) * s->port_capacity);
-    }
-    sp = &s->ports[s->nports++];
+    sp = gpr_malloc(sizeof(grpc_tcp_listener));
+    sp->next = s->head;
+    s->head = sp;
     sp->server = s;
     sp->fd = fd;
     sp->emfd = grpc_fd_create(fd, name);
     memcpy(sp->addr.untyped, addr, addr_len);
     sp->addr_len = addr_len;
+    sp->port = port;
+    sp->is_sibling = 0;
+    sp->sibling = NULL;
+    gpr_ref_init(&sp->refs, 1);
     GPR_ASSERT(sp->emfd);
     gpr_mu_unlock(&s->mu);
     gpr_free(addr_str);
     gpr_free(name);
   }
 
-  return port;
+  return sp;
 }
 
-int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
-                             size_t addr_len) {
-  int allocated_port1 = -1;
-  int allocated_port2 = -1;
-  unsigned i;
+grpc_tcp_listener *grpc_tcp_server_add_port(grpc_tcp_server *s,
+                                            const void *addr,
+                                            size_t addr_len) {
+  int allocated_port = -1;
+  grpc_tcp_listener *sp;
+  grpc_tcp_listener *sp2 = NULL;
   int fd;
   grpc_dualstack_mode dsmode;
   struct sockaddr_in6 addr6_v4mapped;
@@ -420,9 +433,9 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
   /* Check if this is a wildcard port, and if so, try to keep the port the same
      as some previously created listener. */
   if (grpc_sockaddr_get_port(addr) == 0) {
-    for (i = 0; i < s->nports; i++) {
+    for (sp = s->head; sp; sp = sp->next) {
       sockname_len = sizeof(sockname_temp);
-      if (0 == getsockname(s->ports[i].fd, (struct sockaddr *)&sockname_temp,
+      if (0 == getsockname(sp->fd, (struct sockaddr *)&sockname_temp,
                            &sockname_len)) {
         port = grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp);
         if (port > 0) {
@@ -436,6 +449,8 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
     }
   }
 
+  sp = NULL;
+
   if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
     addr = (const struct sockaddr *)&addr6_v4mapped;
     addr_len = sizeof(addr6_v4mapped);
@@ -449,14 +464,16 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
     addr = (struct sockaddr *)&wild6;
     addr_len = sizeof(wild6);
     fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode);
-    allocated_port1 = add_socket_to_server(s, fd, addr, addr_len);
+    sp = add_socket_to_server(s, fd, addr, addr_len);
+    allocated_port = sp->port;
     if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) {
       goto done;
     }
 
     /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */
-    if (port == 0 && allocated_port1 > 0) {
-      grpc_sockaddr_set_port((struct sockaddr *)&wild4, allocated_port1);
+    if (port == 0 && allocated_port > 0) {
+      grpc_sockaddr_set_port((struct sockaddr *)&wild4, allocated_port);
+      sp2 = sp;
     }
     addr = (struct sockaddr *)&wild4;
     addr_len = sizeof(wild4);
@@ -471,22 +488,31 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
     addr = (struct sockaddr *)&addr4_copy;
     addr_len = sizeof(addr4_copy);
   }
-  allocated_port2 = add_socket_to_server(s, fd, addr, addr_len);
+  sp = add_socket_to_server(s, fd, addr, addr_len);
+  sp->sibling = sp2;
+  if (sp2) sp2->is_sibling = 1;
 
 done:
   gpr_free(allocated_addr);
-  return allocated_port1 >= 0 ? allocated_port1 : allocated_port2;
+  return sp;
 }
 
 int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned port_index) {
-  return (port_index < s->nports) ? s->ports[port_index].fd : -1;
+  grpc_tcp_listener *sp;
+  for (sp = s->head; sp && port_index != 0; sp = sp->next, port_index--);
+  if (port_index == 0 && sp) {
+    return sp->fd;
+  } else {
+    return -1;
+  }
 }
 
 void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
                            grpc_pollset **pollsets, size_t pollset_count,
                            grpc_tcp_server_cb on_accept_cb,
                            void *on_accept_cb_arg) {
-  size_t i, j;
+  size_t i;
+  grpc_tcp_listener *sp;
   GPR_ASSERT(on_accept_cb);
   gpr_mu_lock(&s->mu);
   GPR_ASSERT(!s->on_accept_cb);
@@ -495,17 +521,41 @@ void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
   s->on_accept_cb_arg = on_accept_cb_arg;
   s->pollsets = pollsets;
   s->pollset_count = pollset_count;
-  for (i = 0; i < s->nports; i++) {
-    for (j = 0; j < pollset_count; j++) {
-      grpc_pollset_add_fd(exec_ctx, pollsets[j], s->ports[i].emfd);
+  for (sp = s->head; sp; sp = sp->next) {
+    for (i = 0; i < pollset_count; i++) {
+      grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd);
     }
-    s->ports[i].read_closure.cb = on_read;
-    s->ports[i].read_closure.cb_arg = &s->ports[i];
-    grpc_fd_notify_on_read(exec_ctx, s->ports[i].emfd,
-                           &s->ports[i].read_closure);
+    sp->read_closure.cb = on_read;
+    sp->read_closure.cb_arg = sp;
+    grpc_fd_notify_on_read(exec_ctx, sp->emfd,
+                           &sp->read_closure);
     s->active_ports++;
   }
   gpr_mu_unlock(&s->mu);
 }
 
+int grpc_tcp_listener_get_port(grpc_tcp_listener *listener) {
+  grpc_tcp_listener *sp = listener;
+  return sp->port;
+}
+
+void grpc_tcp_listener_ref(grpc_tcp_listener *listener) {
+  grpc_tcp_listener *sp = listener;
+  gpr_ref(&sp->refs);
+}
+
+void grpc_tcp_listener_unref(grpc_tcp_listener *listener) {
+  grpc_tcp_listener *sp = listener;
+  if (sp->is_sibling) return;
+  if (gpr_unref(&sp->refs)) {
+    grpc_tcp_listener *sibling = sp->sibling;
+    while (sibling) {
+      sp = sibling;
+      sibling = sp->sibling;
+      gpr_free(sp);
+    }
+    gpr_free(listener);
+  }
+}
+
 #endif
diff --git a/src/core/iomgr/tcp_server_windows.c b/src/core/iomgr/tcp_server_windows.c
index 3fea8b5b350..e4a1d7f498c 100644
--- a/src/core/iomgr/tcp_server_windows.c
+++ b/src/core/iomgr/tcp_server_windows.c
@@ -35,7 +35,8 @@
 
 #ifdef GPR_WINSOCK_SOCKET
 
-#define _GNU_SOURCE
+#include <io.h>
+
 #include "src/core/iomgr/sockaddr_utils.h"
 
 #include <grpc/support/alloc.h>
@@ -51,25 +52,29 @@
 #include "src/core/iomgr/tcp_server.h"
 #include "src/core/iomgr/tcp_windows.h"
 
-#define INIT_PORT_CAP 2
 #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
 
 /* one listening port */
-typedef struct server_port {
+struct grpc_tcp_listener {
   /* This seemingly magic number comes from AcceptEx's documentation. each
      address buffer needs to have at least 16 more bytes at their end. */
   gpr_uint8 addresses[(sizeof(struct sockaddr_in6) + 16) * 2];
   /* This will hold the socket for the next accept. */
   SOCKET new_socket;
-  /* The listener winsocked. */
+  /* The listener winsocket. */
   grpc_winsocket *socket;
+  /* The actual TCP port number. */
+  int port;
   grpc_tcp_server *server;
   /* The cached AcceptEx for that port. */
   LPFN_ACCEPTEX AcceptEx;
   int shutting_down;
   /* closure for socket notification of accept being ready */
   grpc_closure on_accept;
-} server_port;
+  gpr_refcount refs;
+  /* linked list */
+  struct grpc_tcp_listener *next;
+};
 
 /* the overall server */
 struct grpc_tcp_server {
@@ -82,10 +87,8 @@ struct grpc_tcp_server {
   /* active port count: how many ports are actually still listening */
   int active_ports;
 
-  /* all listening ports */
-  server_port *ports;
-  size_t nports;
-  size_t port_capacity;
+  /* linked list of server ports */
+  grpc_tcp_listener *head;
 
   /* shutdown callback */
   grpc_closure *shutdown_complete;
@@ -99,9 +102,7 @@ grpc_tcp_server *grpc_tcp_server_create(void) {
   s->active_ports = 0;
   s->on_accept_cb = NULL;
   s->on_accept_cb_arg = NULL;
-  s->ports = gpr_malloc(sizeof(server_port) * INIT_PORT_CAP);
-  s->nports = 0;
-  s->port_capacity = INIT_PORT_CAP;
+  s->head = NULL;
   s->shutdown_complete = NULL;
   return s;
 }
@@ -109,26 +110,26 @@ grpc_tcp_server *grpc_tcp_server_create(void) {
 static void dont_care_about_shutdown_completion(void *arg) {}
 
 static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
-  size_t i;
-
   grpc_exec_ctx_enqueue(exec_ctx, s->shutdown_complete, 1);
 
   /* Now that the accepts have been aborted, we can destroy the sockets.
      The IOCP won't get notified on these, so we can flag them as already
      closed by the system. */
-  for (i = 0; i < s->nports; i++) {
-    server_port *sp = &s->ports[i];
+  while (s->head) {
+    grpc_tcp_listener *sp = s->head;
+    s->head = sp->next;
+    sp->next = NULL;
     grpc_winsocket_destroy(sp->socket);
+    grpc_tcp_listener_unref(sp);
   }
-  gpr_free(s->ports);
   gpr_free(s);
 }
 
 /* Public function. Stops and destroys a grpc_tcp_server. */
 void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
                              grpc_closure *shutdown_complete) {
-  size_t i;
   int immediately_done = 0;
+  grpc_tcp_listener *sp;
   gpr_mu_lock(&s->mu);
 
   s->shutdown_complete = shutdown_complete;
@@ -138,8 +139,7 @@ void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
   if (s->active_ports == 0) {
     immediately_done = 1;
   }
-  for (i = 0; i < s->nports; i++) {
-    server_port *sp = &s->ports[i];
+  for (sp = s->head; sp; sp = sp->next) {
     sp->shutting_down = 1;
     grpc_winsocket_shutdown(sp->socket);
   }
@@ -199,7 +199,7 @@ error:
 }
 
 static void decrement_active_ports_and_notify(grpc_exec_ctx *exec_ctx,
-                                              server_port *sp) {
+                                              grpc_tcp_listener *sp) {
   int notify = 0;
   sp->shutting_down = 0;
   gpr_mu_lock(&sp->server->mu);
@@ -216,7 +216,7 @@ static void decrement_active_ports_and_notify(grpc_exec_ctx *exec_ctx,
 
 /* In order to do an async accept, we need to create a socket first which
    will be the one assigned to the new incoming connection. */
-static void start_accept(grpc_exec_ctx *exec_ctx, server_port *port) {
+static void start_accept(grpc_exec_ctx *exec_ctx, grpc_tcp_listener *port) {
   SOCKET sock = INVALID_SOCKET;
   char *message;
   char *utf8_message;
@@ -276,7 +276,7 @@ failure:
 
 /* Event manager callback when reads are ready. */
 static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, int from_iocp) {
-  server_port *sp = arg;
+  grpc_tcp_listener *sp = arg;
   SOCKET sock = sp->new_socket;
   grpc_winsocket_callback_info *info = &sp->socket->read_info;
   grpc_endpoint *ep = NULL;
@@ -351,16 +351,17 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, int from_iocp) {
   start_accept(exec_ctx, sp);
 }
 
-static int add_socket_to_server(grpc_tcp_server *s, SOCKET sock,
-                                const struct sockaddr *addr, size_t addr_len) {
-  server_port *sp;
+static grpc_tcp_listener *add_socket_to_server(grpc_tcp_server *s, SOCKET sock,
+                                         const struct sockaddr *addr,
+                                         size_t addr_len) {
+  grpc_tcp_listener *sp = NULL;
   int port;
   int status;
   GUID guid = WSAID_ACCEPTEX;
   DWORD ioctl_num_bytes;
   LPFN_ACCEPTEX AcceptEx;
 
-  if (sock == INVALID_SOCKET) return -1;
+  if (sock == INVALID_SOCKET) return NULL;
 
   /* We need to grab the AcceptEx pointer for that port, as it may be
      interface-dependent. We'll cache it to avoid doing that again. */
@@ -373,37 +374,35 @@ static int add_socket_to_server(grpc_tcp_server *s, SOCKET sock,
     gpr_log(GPR_ERROR, "on_connect error: %s", utf8_message);
     gpr_free(utf8_message);
     closesocket(sock);
-    return -1;
+    return NULL;
   }
 
   port = prepare_socket(sock, addr, addr_len);
   if (port >= 0) {
     gpr_mu_lock(&s->mu);
     GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
-    /* append it to the list under a lock */
-    if (s->nports == s->port_capacity) {
-      /* too many ports, and we need to store their address in a closure */
-      /* TODO(ctiller): make server_port a linked list */
-      abort();
-    }
-    sp = &s->ports[s->nports++];
+    sp = gpr_malloc(sizeof(grpc_tcp_listener));
+    sp->next = s->head;
+    s->head = sp;
     sp->server = s;
     sp->socket = grpc_winsocket_create(sock, "listener");
     sp->shutting_down = 0;
     sp->AcceptEx = AcceptEx;
     sp->new_socket = INVALID_SOCKET;
+    sp->port = port;
+    gpr_ref_init(&sp->refs, 1);
     grpc_closure_init(&sp->on_accept, on_accept, sp);
     GPR_ASSERT(sp->socket);
     gpr_mu_unlock(&s->mu);
   }
 
-  return port;
+  return sp;
 }
 
-int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
-                             size_t addr_len) {
-  int allocated_port = -1;
-  unsigned i;
+grpc_tcp_listener *grpc_tcp_server_add_port(grpc_tcp_server *s,
+                                            const void *addr,
+                                            size_t addr_len) {
+  grpc_tcp_listener *sp;
   SOCKET sock;
   struct sockaddr_in6 addr6_v4mapped;
   struct sockaddr_in6 wildcard;
@@ -415,9 +414,9 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
   /* Check if this is a wildcard port, and if so, try to keep the port the same
      as some previously created listener. */
   if (grpc_sockaddr_get_port(addr) == 0) {
-    for (i = 0; i < s->nports; i++) {
+    for (sp = s->head; sp; sp = sp->next) {
       sockname_len = sizeof(sockname_temp);
-      if (0 == getsockname(s->ports[i].socket->socket,
+      if (0 == getsockname(sp->socket->socket,
                            (struct sockaddr *)&sockname_temp, &sockname_len)) {
         port = grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp);
         if (port > 0) {
@@ -452,33 +451,55 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
     gpr_free(utf8_message);
   }
 
-  allocated_port = add_socket_to_server(s, sock, addr, addr_len);
+  sp = add_socket_to_server(s, sock, addr, addr_len);
   gpr_free(allocated_addr);
 
-  return allocated_port;
+  return sp;
 }
 
-SOCKET
-grpc_tcp_server_get_socket(grpc_tcp_server *s, unsigned index) {
-  return (index < s->nports) ? s->ports[index].socket->socket : INVALID_SOCKET;
+int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned port_index) {
+  grpc_tcp_listener *sp;
+  for (sp = s->head; sp && port_index != 0; sp = sp->next, port_index--);
+  if (port_index == 0 && sp) {
+    return _open_osfhandle(sp->socket->socket, 0);
+  } else {
+    return -1;
+  }
 }
 
 void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s,
                            grpc_pollset **pollset, size_t pollset_count,
                            grpc_tcp_server_cb on_accept_cb,
                            void *on_accept_cb_arg) {
-  size_t i;
+  grpc_tcp_listener *sp;
   GPR_ASSERT(on_accept_cb);
   gpr_mu_lock(&s->mu);
   GPR_ASSERT(!s->on_accept_cb);
   GPR_ASSERT(s->active_ports == 0);
   s->on_accept_cb = on_accept_cb;
   s->on_accept_cb_arg = on_accept_cb_arg;
-  for (i = 0; i < s->nports; i++) {
-    start_accept(exec_ctx, s->ports + i);
+  for (sp = s->head; sp; sp = sp->next) {
+    start_accept(exec_ctx, sp);
     s->active_ports++;
   }
   gpr_mu_unlock(&s->mu);
 }
 
+int grpc_tcp_listener_get_port(grpc_tcp_listener *listener) {
+  grpc_tcp_listener *sp = listener;
+  return sp->port;
+}
+
+void grpc_tcp_listener_ref(grpc_tcp_listener *listener) {
+  grpc_tcp_listener *sp = listener;
+  gpr_ref(&sp->refs);
+}
+
+void grpc_tcp_listener_unref(grpc_tcp_listener *listener) {
+  grpc_tcp_listener *sp = listener;
+  if (gpr_unref(&sp->refs)) {
+    gpr_free(listener);
+  }
+}
+
 #endif /* GPR_WINSOCK_SOCKET */
diff --git a/src/core/security/server_secure_chttp2.c b/src/core/security/server_secure_chttp2.c
index 872c0bd1acb..14a5d0fef6b 100644
--- a/src/core/security/server_secure_chttp2.c
+++ b/src/core/security/server_secure_chttp2.c
@@ -247,9 +247,11 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
   }
 
   for (i = 0; i < resolved->naddrs; i++) {
-    port_temp = grpc_tcp_server_add_port(
+    grpc_tcp_listener *listener;
+    listener = grpc_tcp_server_add_port(
         tcp, (struct sockaddr *)&resolved->addrs[i].addr,
         resolved->addrs[i].len);
+    port_temp = grpc_tcp_listener_get_port(listener);
     if (port_temp >= 0) {
       if (port_num == -1) {
         port_num = port_temp;
diff --git a/src/core/support/avl.c b/src/core/support/avl.c
new file mode 100644
index 00000000000..9734c9987fe
--- /dev/null
+++ b/src/core/support/avl.c
@@ -0,0 +1,288 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/support/avl.h>
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/useful.h>
+
+gpr_avl gpr_avl_create(const gpr_avl_vtable *vtable) {
+  gpr_avl out;
+  out.vtable = vtable;
+  out.root = NULL;
+  return out;
+}
+
+static gpr_avl_node *ref_node(gpr_avl_node *node) {
+  if (node) {
+    gpr_ref(&node->refs);
+  }
+  return node;
+}
+
+static void unref_node(const gpr_avl_vtable *vtable, gpr_avl_node *node) {
+  if (node == NULL) {
+    return;
+  }
+  if (gpr_unref(&node->refs)) {
+    vtable->destroy_key(node->key);
+    vtable->destroy_value(node->value);
+    unref_node(vtable, node->left);
+    unref_node(vtable, node->right);
+    gpr_free(node);
+  }
+}
+
+static long node_height(gpr_avl_node *node) {
+  return node == NULL ? 0 : node->height;
+}
+
+#ifndef NDEBUG
+static long calculate_height(gpr_avl_node *node) {
+  return node == NULL ? 0 : 1 + GPR_MAX(calculate_height(node->left),
+                                        calculate_height(node->right));
+}
+
+static gpr_avl_node *assert_invariants(gpr_avl_node *n) {
+  if (n == NULL) return NULL;
+  assert_invariants(n->left);
+  assert_invariants(n->right);
+  assert(calculate_height(n) == n->height);
+  assert(labs(node_height(n->left) - node_height(n->right)) <= 1);
+  return n;
+}
+#else
+static gpr_avl_node *assert_invariants(gpr_avl_node *n) { return n; }
+#endif
+
+gpr_avl_node *new_node(void *key, void *value, gpr_avl_node *left,
+                       gpr_avl_node *right) {
+  gpr_avl_node *node = gpr_malloc(sizeof(*node));
+  gpr_ref_init(&node->refs, 1);
+  node->key = key;
+  node->value = value;
+  node->left = assert_invariants(left);
+  node->right = assert_invariants(right);
+  node->height = 1 + GPR_MAX(node_height(left), node_height(right));
+  return node;
+}
+
+static gpr_avl_node *get(const gpr_avl_vtable *vtable, gpr_avl_node *node,
+                         void *key) {
+  long cmp;
+
+  if (node == NULL) {
+    return NULL;
+  }
+
+  cmp = vtable->compare_keys(node->key, key);
+  if (cmp == 0) {
+    return node;
+  } else if (cmp > 0) {
+    return get(vtable, node->left, key);
+  } else {
+    return get(vtable, node->right, key);
+  }
+}
+
+void *gpr_avl_get(gpr_avl avl, void *key) {
+  gpr_avl_node *node = get(avl.vtable, avl.root, key);
+  return node ? node->value : NULL;
+}
+
+static gpr_avl_node *rotate_left(const gpr_avl_vtable *vtable, void *key,
+                                 void *value, gpr_avl_node *left,
+                                 gpr_avl_node *right) {
+  gpr_avl_node *n =
+      new_node(vtable->copy_key(right->key), vtable->copy_value(right->value),
+               new_node(key, value, left, ref_node(right->left)),
+               ref_node(right->right));
+  unref_node(vtable, right);
+  return n;
+}
+
+static gpr_avl_node *rotate_right(const gpr_avl_vtable *vtable, void *key,
+                                  void *value, gpr_avl_node *left,
+                                  gpr_avl_node *right) {
+  gpr_avl_node *n = new_node(
+      vtable->copy_key(left->key), vtable->copy_value(left->value),
+      ref_node(left->left), new_node(key, value, ref_node(left->right), right));
+  unref_node(vtable, left);
+  return n;
+}
+
+static gpr_avl_node *rotate_left_right(const gpr_avl_vtable *vtable, void *key,
+                                       void *value, gpr_avl_node *left,
+                                       gpr_avl_node *right) {
+  /* rotate_right(..., rotate_left(left), right) */
+  gpr_avl_node *n = new_node(
+      vtable->copy_key(left->right->key),
+      vtable->copy_value(left->right->value),
+      new_node(vtable->copy_key(left->key), vtable->copy_value(left->value),
+               ref_node(left->left), ref_node(left->right->left)),
+      new_node(key, value, ref_node(left->right->right), right));
+  unref_node(vtable, left);
+  return n;
+}
+
+static gpr_avl_node *rotate_right_left(const gpr_avl_vtable *vtable, void *key,
+                                       void *value, gpr_avl_node *left,
+                                       gpr_avl_node *right) {
+  /* rotate_left(..., left, rotate_right(right)) */
+  gpr_avl_node *n = new_node(
+      vtable->copy_key(right->left->key),
+      vtable->copy_value(right->left->value),
+      new_node(key, value, left, ref_node(right->left->left)),
+      new_node(vtable->copy_key(right->key), vtable->copy_key(right->value),
+               ref_node(right->left->right), ref_node(right->right)));
+  unref_node(vtable, right);
+  return n;
+}
+
+static gpr_avl_node *rebalance(const gpr_avl_vtable *vtable, void *key,
+                               void *value, gpr_avl_node *left,
+                               gpr_avl_node *right) {
+  switch (node_height(left) - node_height(right)) {
+    case 2:
+      if (node_height(left->left) - node_height(left->right) == -1) {
+        return assert_invariants(
+            rotate_left_right(vtable, key, value, left, right));
+      } else {
+        return assert_invariants(rotate_right(vtable, key, value, left, right));
+      }
+    case -2:
+      if (node_height(right->left) - node_height(right->right) == 1) {
+        return assert_invariants(
+            rotate_right_left(vtable, key, value, left, right));
+      } else {
+        return assert_invariants(rotate_left(vtable, key, value, left, right));
+      }
+    default:
+      return assert_invariants(new_node(key, value, left, right));
+  }
+}
+
+static gpr_avl_node *add(const gpr_avl_vtable *vtable, gpr_avl_node *node,
+                         void *key, void *value) {
+  long cmp;
+  if (node == NULL) {
+    return new_node(key, value, NULL, NULL);
+  }
+  cmp = vtable->compare_keys(node->key, key);
+  if (cmp == 0) {
+    return new_node(key, value, ref_node(node->left), ref_node(node->right));
+  } else if (cmp > 0) {
+    return rebalance(
+        vtable, vtable->copy_key(node->key), vtable->copy_value(node->value),
+        add(vtable, node->left, key, value), ref_node(node->right));
+  } else {
+    return rebalance(vtable, vtable->copy_key(node->key),
+                     vtable->copy_value(node->value), ref_node(node->left),
+                     add(vtable, node->right, key, value));
+  }
+}
+
+gpr_avl gpr_avl_add(gpr_avl avl, void *key, void *value) {
+  gpr_avl_node *old_root = avl.root;
+  avl.root = add(avl.vtable, avl.root, key, value);
+  assert_invariants(avl.root);
+  unref_node(avl.vtable, old_root);
+  return avl;
+}
+
+static gpr_avl_node *in_order_head(gpr_avl_node *node) {
+  while (node->left != NULL) {
+    node = node->left;
+  }
+  return node;
+}
+
+static gpr_avl_node *in_order_tail(gpr_avl_node *node) {
+  while (node->right != NULL) {
+    node = node->right;
+  }
+  return node;
+}
+
+static gpr_avl_node *remove(const gpr_avl_vtable *vtable, gpr_avl_node *node,
+                            void *key) {
+  long cmp;
+  if (node == NULL) {
+    return NULL;
+  }
+  cmp = vtable->compare_keys(node->key, key);
+  if (cmp == 0) {
+    if (node->left == NULL) {
+      return ref_node(node->right);
+    } else if (node->right == NULL) {
+      return ref_node(node->left);
+    } else if (node->left->height < node->right->height) {
+      gpr_avl_node *h = in_order_head(node->right);
+      return rebalance(vtable, vtable->copy_key(h->key),
+                       vtable->copy_value(h->value), ref_node(node->left),
+                       remove(vtable, node->right, h->key));
+    } else {
+      gpr_avl_node *h = in_order_tail(node->left);
+      return rebalance(
+          vtable, vtable->copy_key(h->key), vtable->copy_value(h->value),
+          remove(vtable, node->left, h->key), ref_node(node->right));
+    }
+  } else if (cmp > 0) {
+    return rebalance(vtable, vtable->copy_key(node->key),
+                     vtable->copy_value(node->value),
+                     remove(vtable, node->left, key), ref_node(node->right));
+  } else {
+    return rebalance(vtable, vtable->copy_key(node->key),
+                     vtable->copy_value(node->value), ref_node(node->left),
+                     remove(vtable, node->right, key));
+  }
+}
+
+gpr_avl gpr_avl_remove(gpr_avl avl, void *key) {
+  gpr_avl_node *old_root = avl.root;
+  avl.root = remove(avl.vtable, avl.root, key);
+  assert_invariants(avl.root);
+  unref_node(avl.vtable, old_root);
+  return avl;
+}
+
+gpr_avl gpr_avl_ref(gpr_avl avl) {
+  ref_node(avl.root);
+  return avl;
+}
+
+void gpr_avl_unref(gpr_avl avl) { unref_node(avl.vtable, avl.root); }
diff --git a/src/core/surface/server_chttp2.c b/src/core/surface/server_chttp2.c
index 9acc694b5b5..990bc4aa235 100644
--- a/src/core/surface/server_chttp2.c
+++ b/src/core/surface/server_chttp2.c
@@ -106,9 +106,11 @@ int grpc_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
   }
 
   for (i = 0; i < resolved->naddrs; i++) {
-    port_temp = grpc_tcp_server_add_port(
+    grpc_tcp_listener *listener;
+    listener = grpc_tcp_server_add_port(
         tcp, (struct sockaddr *)&resolved->addrs[i].addr,
         resolved->addrs[i].len);
+    port_temp = grpc_tcp_listener_get_port(listener);
     if (port_temp >= 0) {
       if (port_num == -1) {
         port_num = port_temp;
diff --git a/test/core/support/avl_test.c b/test/core/support/avl_test.c
new file mode 100644
index 00000000000..6530fe4269e
--- /dev/null
+++ b/test/core/support/avl_test.c
@@ -0,0 +1,3671 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/support/avl.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/useful.h>
+
+#include "test/core/util/test_config.h"
+
+static int *box(int x) {
+  int *b = gpr_malloc(sizeof(*b));
+  *b = x;
+  return b;
+}
+
+static long int_compare(void *int1, void *int2) {
+  return (*(int *)int1) - (*(int *)int2);
+}
+static void *int_copy(void *p) { return box(*(int *)p); }
+
+static const gpr_avl_vtable int_int_vtable = {gpr_free, int_copy, int_compare,
+                                              gpr_free, int_copy};
+
+static void check_get(gpr_avl avl, int key, int value) {
+  int *k = box(key);
+  GPR_ASSERT(*(int *)gpr_avl_get(avl, k) == value);
+  gpr_free(k);
+}
+
+static void check_negget(gpr_avl avl, int key) {
+  int *k = box(key);
+  GPR_ASSERT(gpr_avl_get(avl, k) == NULL);
+  gpr_free(k);
+}
+
+static gpr_avl remove_int(gpr_avl avl, int key) {
+  int *k = box(key);
+  avl = gpr_avl_remove(avl, k);
+  gpr_free(k);
+  return avl;
+}
+
+static void test_get(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_get");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(1), box(11));
+  avl = gpr_avl_add(avl, box(2), box(22));
+  avl = gpr_avl_add(avl, box(3), box(33));
+  check_get(avl, 1, 11);
+  check_get(avl, 2, 22);
+  check_get(avl, 3, 33);
+  check_negget(avl, 4);
+  gpr_avl_unref(avl);
+}
+
+static void test_ll(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_ll");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(5), box(1));
+  avl = gpr_avl_add(avl, box(4), box(2));
+  avl = gpr_avl_add(avl, box(3), box(3));
+  GPR_ASSERT(*(int *)avl.root->key == 4);
+  GPR_ASSERT(*(int *)avl.root->left->key == 3);
+  GPR_ASSERT(*(int *)avl.root->right->key == 5);
+  gpr_avl_unref(avl);
+}
+
+static void test_lr(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_lr");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(5), box(1));
+  avl = gpr_avl_add(avl, box(3), box(2));
+  avl = gpr_avl_add(avl, box(4), box(3));
+  GPR_ASSERT(*(int *)avl.root->key == 4);
+  GPR_ASSERT(*(int *)avl.root->left->key == 3);
+  GPR_ASSERT(*(int *)avl.root->right->key == 5);
+  gpr_avl_unref(avl);
+}
+
+static void test_rr(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_rr");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(3), box(1));
+  avl = gpr_avl_add(avl, box(4), box(2));
+  avl = gpr_avl_add(avl, box(5), box(3));
+  GPR_ASSERT(*(int *)avl.root->key == 4);
+  GPR_ASSERT(*(int *)avl.root->left->key == 3);
+  GPR_ASSERT(*(int *)avl.root->right->key == 5);
+  gpr_avl_unref(avl);
+}
+
+static void test_rl(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_rl");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(3), box(1));
+  avl = gpr_avl_add(avl, box(5), box(2));
+  avl = gpr_avl_add(avl, box(4), box(3));
+  GPR_ASSERT(*(int *)avl.root->key == 4);
+  GPR_ASSERT(*(int *)avl.root->left->key == 3);
+  GPR_ASSERT(*(int *)avl.root->right->key == 5);
+  gpr_avl_unref(avl);
+}
+
+static void test_unbalanced(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_unbalanced");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(5), box(1));
+  avl = gpr_avl_add(avl, box(4), box(2));
+  avl = gpr_avl_add(avl, box(3), box(3));
+  avl = gpr_avl_add(avl, box(2), box(4));
+  avl = gpr_avl_add(avl, box(1), box(5));
+  GPR_ASSERT(*(int *)avl.root->key == 4);
+  GPR_ASSERT(*(int *)avl.root->left->key == 2);
+  GPR_ASSERT(*(int *)avl.root->left->left->key == 1);
+  GPR_ASSERT(*(int *)avl.root->left->right->key == 3);
+  GPR_ASSERT(*(int *)avl.root->right->key == 5);
+  gpr_avl_unref(avl);
+}
+
+static void test_replace(void) {
+  gpr_avl avl;
+  gpr_log(GPR_DEBUG, "test_replace");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(1), box(1));
+  avl = gpr_avl_add(avl, box(1), box(2));
+  check_get(avl, 1, 2);
+  check_negget(avl, 2);
+  gpr_avl_unref(avl);
+}
+
+static void test_remove(void) {
+  gpr_avl avl;
+  gpr_avl avl3, avl4, avl5, avln;
+  gpr_log(GPR_DEBUG, "test_remove");
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(3), box(1));
+  avl = gpr_avl_add(avl, box(4), box(2));
+  avl = gpr_avl_add(avl, box(5), box(3));
+
+  avl3 = remove_int(gpr_avl_ref(avl), 3);
+  avl4 = remove_int(gpr_avl_ref(avl), 4);
+  avl5 = remove_int(gpr_avl_ref(avl), 5);
+  avln = remove_int(gpr_avl_ref(avl), 1);
+
+  gpr_avl_unref(avl);
+
+  check_negget(avl3, 3);
+  check_get(avl3, 4, 2);
+  check_get(avl3, 5, 3);
+  gpr_avl_unref(avl3);
+
+  check_get(avl4, 3, 1);
+  check_negget(avl4, 4);
+  check_get(avl4, 5, 3);
+  gpr_avl_unref(avl4);
+
+  check_get(avl5, 3, 1);
+  check_get(avl5, 4, 2);
+  check_negget(avl5, 5);
+  gpr_avl_unref(avl5);
+
+  check_get(avln, 3, 1);
+  check_get(avln, 4, 2);
+  check_get(avln, 5, 3);
+  gpr_avl_unref(avln);
+}
+
+static void test_badcase1(void) {
+  gpr_avl avl;
+
+  gpr_log(GPR_DEBUG, "test_badcase1");
+
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(88), box(1));
+  avl = remove_int(avl, 643);
+  avl = remove_int(avl, 983);
+  avl = gpr_avl_add(avl, box(985), box(4));
+  avl = gpr_avl_add(avl, box(640), box(5));
+  avl = gpr_avl_add(avl, box(41), box(6));
+  avl = gpr_avl_add(avl, box(112), box(7));
+  avl = gpr_avl_add(avl, box(342), box(8));
+  avl = remove_int(avl, 1013);
+  avl = gpr_avl_add(avl, box(434), box(10));
+  avl = gpr_avl_add(avl, box(520), box(11));
+  avl = gpr_avl_add(avl, box(231), box(12));
+  avl = gpr_avl_add(avl, box(852), box(13));
+  avl = remove_int(avl, 461);
+  avl = gpr_avl_add(avl, box(108), box(15));
+  avl = gpr_avl_add(avl, box(806), box(16));
+  avl = gpr_avl_add(avl, box(827), box(17));
+  avl = remove_int(avl, 796);
+  avl = gpr_avl_add(avl, box(340), box(19));
+  avl = gpr_avl_add(avl, box(498), box(20));
+  avl = gpr_avl_add(avl, box(203), box(21));
+  avl = gpr_avl_add(avl, box(751), box(22));
+  avl = gpr_avl_add(avl, box(150), box(23));
+  avl = remove_int(avl, 237);
+  avl = gpr_avl_add(avl, box(830), box(25));
+  avl = remove_int(avl, 1007);
+  avl = remove_int(avl, 394);
+  avl = gpr_avl_add(avl, box(65), box(28));
+  avl = remove_int(avl, 904);
+  avl = remove_int(avl, 123);
+  avl = gpr_avl_add(avl, box(238), box(31));
+  avl = gpr_avl_add(avl, box(184), box(32));
+  avl = remove_int(avl, 331);
+  avl = gpr_avl_add(avl, box(827), box(34));
+
+  check_get(avl, 830, 25);
+
+  gpr_avl_unref(avl);
+}
+
+static void test_badcase2(void) {
+  gpr_avl avl;
+
+  gpr_log(GPR_DEBUG, "test_badcase2");
+
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = gpr_avl_add(avl, box(288), box(1));
+  avl = remove_int(avl, 415);
+  avl = gpr_avl_add(avl, box(953), box(3));
+  avl = gpr_avl_add(avl, box(101), box(4));
+  avl = gpr_avl_add(avl, box(516), box(5));
+  avl = gpr_avl_add(avl, box(547), box(6));
+  avl = gpr_avl_add(avl, box(467), box(7));
+  avl = gpr_avl_add(avl, box(793), box(8));
+  avl = remove_int(avl, 190);
+  avl = gpr_avl_add(avl, box(687), box(10));
+  avl = gpr_avl_add(avl, box(242), box(11));
+  avl = gpr_avl_add(avl, box(142), box(12));
+  avl = remove_int(avl, 705);
+  avl = remove_int(avl, 578);
+  avl = remove_int(avl, 767);
+  avl = remove_int(avl, 183);
+  avl = gpr_avl_add(avl, box(950), box(17));
+  avl = gpr_avl_add(avl, box(622), box(18));
+  avl = remove_int(avl, 513);
+  avl = remove_int(avl, 429);
+  avl = gpr_avl_add(avl, box(205), box(21));
+  avl = remove_int(avl, 663);
+  avl = remove_int(avl, 953);
+  avl = remove_int(avl, 892);
+  avl = gpr_avl_add(avl, box(236), box(25));
+  avl = remove_int(avl, 982);
+  avl = remove_int(avl, 201);
+  avl = remove_int(avl, 684);
+  avl = gpr_avl_add(avl, box(572), box(29));
+  avl = remove_int(avl, 817);
+  avl = gpr_avl_add(avl, box(970), box(31));
+  avl = remove_int(avl, 347);
+  avl = remove_int(avl, 574);
+  avl = gpr_avl_add(avl, box(752), box(34));
+  avl = gpr_avl_add(avl, box(670), box(35));
+  avl = gpr_avl_add(avl, box(69), box(36));
+  avl = remove_int(avl, 111);
+  avl = remove_int(avl, 523);
+  avl = gpr_avl_add(avl, box(141), box(39));
+  avl = remove_int(avl, 159);
+  avl = gpr_avl_add(avl, box(947), box(41));
+  avl = gpr_avl_add(avl, box(855), box(42));
+  avl = remove_int(avl, 218);
+  avl = remove_int(avl, 6);
+  avl = gpr_avl_add(avl, box(753), box(45));
+  avl = remove_int(avl, 82);
+  avl = remove_int(avl, 799);
+  avl = gpr_avl_add(avl, box(572), box(48));
+  avl = remove_int(avl, 376);
+  avl = remove_int(avl, 413);
+  avl = gpr_avl_add(avl, box(458), box(51));
+  avl = remove_int(avl, 897);
+  avl = gpr_avl_add(avl, box(191), box(53));
+  avl = gpr_avl_add(avl, box(609), box(54));
+  avl = remove_int(avl, 787);
+  avl = remove_int(avl, 710);
+  avl = remove_int(avl, 886);
+  avl = remove_int(avl, 835);
+  avl = remove_int(avl, 33);
+  avl = gpr_avl_add(avl, box(871), box(60));
+  avl = remove_int(avl, 641);
+  avl = gpr_avl_add(avl, box(462), box(62));
+  avl = remove_int(avl, 359);
+  avl = remove_int(avl, 767);
+  avl = gpr_avl_add(avl, box(310), box(65));
+  avl = remove_int(avl, 757);
+  avl = remove_int(avl, 639);
+  avl = remove_int(avl, 314);
+  avl = gpr_avl_add(avl, box(2), box(69));
+  avl = remove_int(avl, 138);
+  avl = gpr_avl_add(avl, box(669), box(71));
+  avl = remove_int(avl, 477);
+  avl = gpr_avl_add(avl, box(366), box(73));
+  avl = gpr_avl_add(avl, box(612), box(74));
+  avl = gpr_avl_add(avl, box(106), box(75));
+  avl = remove_int(avl, 161);
+  avl = gpr_avl_add(avl, box(388), box(77));
+  avl = gpr_avl_add(avl, box(141), box(78));
+  avl = remove_int(avl, 633);
+  avl = remove_int(avl, 459);
+  avl = gpr_avl_add(avl, box(40), box(81));
+  avl = remove_int(avl, 689);
+  avl = gpr_avl_add(avl, box(823), box(83));
+  avl = remove_int(avl, 485);
+  avl = gpr_avl_add(avl, box(903), box(85));
+  avl = gpr_avl_add(avl, box(592), box(86));
+  avl = remove_int(avl, 448);
+  avl = gpr_avl_add(avl, box(56), box(88));
+  avl = remove_int(avl, 333);
+  avl = gpr_avl_add(avl, box(189), box(90));
+  avl = gpr_avl_add(avl, box(103), box(91));
+  avl = remove_int(avl, 164);
+  avl = remove_int(avl, 974);
+  avl = gpr_avl_add(avl, box(215), box(94));
+  avl = remove_int(avl, 189);
+  avl = remove_int(avl, 504);
+  avl = gpr_avl_add(avl, box(868), box(97));
+  avl = remove_int(avl, 909);
+  avl = remove_int(avl, 148);
+  avl = remove_int(avl, 469);
+  avl = gpr_avl_add(avl, box(994), box(101));
+  avl = gpr_avl_add(avl, box(576), box(102));
+  avl = remove_int(avl, 82);
+  avl = remove_int(avl, 209);
+  avl = gpr_avl_add(avl, box(276), box(105));
+  avl = remove_int(avl, 856);
+  avl = gpr_avl_add(avl, box(750), box(107));
+  avl = remove_int(avl, 871);
+  avl = gpr_avl_add(avl, box(301), box(109));
+  avl = remove_int(avl, 260);
+  avl = remove_int(avl, 737);
+  avl = remove_int(avl, 719);
+  avl = gpr_avl_add(avl, box(933), box(113));
+  avl = gpr_avl_add(avl, box(225), box(114));
+  avl = gpr_avl_add(avl, box(975), box(115));
+  avl = gpr_avl_add(avl, box(86), box(116));
+  avl = remove_int(avl, 732);
+  avl = gpr_avl_add(avl, box(340), box(118));
+  avl = gpr_avl_add(avl, box(271), box(119));
+  avl = remove_int(avl, 206);
+  avl = gpr_avl_add(avl, box(949), box(121));
+  avl = gpr_avl_add(avl, box(927), box(122));
+  avl = gpr_avl_add(avl, box(34), box(123));
+  avl = gpr_avl_add(avl, box(351), box(124));
+  avl = remove_int(avl, 836);
+  avl = gpr_avl_add(avl, box(825), box(126));
+  avl = gpr_avl_add(avl, box(352), box(127));
+  avl = remove_int(avl, 107);
+  avl = remove_int(avl, 101);
+  avl = gpr_avl_add(avl, box(320), box(130));
+  avl = gpr_avl_add(avl, box(3), box(131));
+  avl = remove_int(avl, 998);
+  avl = remove_int(avl, 44);
+  avl = gpr_avl_add(avl, box(525), box(134));
+  avl = gpr_avl_add(avl, box(864), box(135));
+  avl = gpr_avl_add(avl, box(863), box(136));
+  avl = remove_int(avl, 770);
+  avl = gpr_avl_add(avl, box(440), box(138));
+  avl = remove_int(avl, 516);
+  avl = gpr_avl_add(avl, box(116), box(140));
+  avl = remove_int(avl, 380);
+  avl = gpr_avl_add(avl, box(878), box(142));
+  avl = remove_int(avl, 439);
+  avl = gpr_avl_add(avl, box(994), box(144));
+  avl = remove_int(avl, 294);
+  avl = remove_int(avl, 593);
+  avl = gpr_avl_add(avl, box(696), box(147));
+  avl = remove_int(avl, 8);
+  avl = gpr_avl_add(avl, box(881), box(149));
+  avl = remove_int(avl, 32);
+  avl = remove_int(avl, 242);
+  avl = gpr_avl_add(avl, box(487), box(152));
+  avl = gpr_avl_add(avl, box(637), box(153));
+  avl = gpr_avl_add(avl, box(793), box(154));
+  avl = gpr_avl_add(avl, box(696), box(155));
+  avl = remove_int(avl, 458);
+  avl = gpr_avl_add(avl, box(828), box(157));
+  avl = remove_int(avl, 784);
+  avl = remove_int(avl, 274);
+  avl = gpr_avl_add(avl, box(783), box(160));
+  avl = remove_int(avl, 21);
+  avl = gpr_avl_add(avl, box(866), box(162));
+  avl = remove_int(avl, 919);
+  avl = gpr_avl_add(avl, box(435), box(164));
+  avl = remove_int(avl, 385);
+  avl = gpr_avl_add(avl, box(475), box(166));
+  avl = remove_int(avl, 339);
+  avl = gpr_avl_add(avl, box(615), box(168));
+  avl = remove_int(avl, 866);
+  avl = remove_int(avl, 82);
+  avl = remove_int(avl, 271);
+  avl = gpr_avl_add(avl, box(590), box(172));
+  avl = gpr_avl_add(avl, box(852), box(173));
+  avl = remove_int(avl, 318);
+  avl = remove_int(avl, 82);
+  avl = gpr_avl_add(avl, box(672), box(176));
+  avl = remove_int(avl, 430);
+  avl = gpr_avl_add(avl, box(821), box(178));
+  avl = gpr_avl_add(avl, box(365), box(179));
+  avl = remove_int(avl, 78);
+  avl = gpr_avl_add(avl, box(700), box(181));
+  avl = gpr_avl_add(avl, box(353), box(182));
+  avl = remove_int(avl, 492);
+  avl = gpr_avl_add(avl, box(991), box(184));
+  avl = remove_int(avl, 330);
+  avl = gpr_avl_add(avl, box(873), box(186));
+  avl = remove_int(avl, 589);
+  avl = gpr_avl_add(avl, box(676), box(188));
+  avl = gpr_avl_add(avl, box(790), box(189));
+  avl = remove_int(avl, 521);
+  avl = remove_int(avl, 47);
+  avl = gpr_avl_add(avl, box(976), box(192));
+  avl = gpr_avl_add(avl, box(683), box(193));
+  avl = remove_int(avl, 803);
+  avl = remove_int(avl, 1006);
+  avl = gpr_avl_add(avl, box(775), box(196));
+  avl = gpr_avl_add(avl, box(411), box(197));
+  avl = gpr_avl_add(avl, box(697), box(198));
+  avl = remove_int(avl, 50);
+  avl = gpr_avl_add(avl, box(213), box(200));
+  avl = remove_int(avl, 714);
+  avl = gpr_avl_add(avl, box(981), box(202));
+  avl = gpr_avl_add(avl, box(502), box(203));
+  avl = gpr_avl_add(avl, box(697), box(204));
+  avl = gpr_avl_add(avl, box(603), box(205));
+  avl = gpr_avl_add(avl, box(117), box(206));
+  avl = remove_int(avl, 363);
+  avl = gpr_avl_add(avl, box(104), box(208));
+  avl = remove_int(avl, 842);
+  avl = gpr_avl_add(avl, box(48), box(210));
+  avl = remove_int(avl, 764);
+  avl = gpr_avl_add(avl, box(482), box(212));
+  avl = gpr_avl_add(avl, box(928), box(213));
+  avl = gpr_avl_add(avl, box(30), box(214));
+  avl = gpr_avl_add(avl, box(820), box(215));
+  avl = gpr_avl_add(avl, box(334), box(216));
+  avl = remove_int(avl, 306);
+  avl = gpr_avl_add(avl, box(789), box(218));
+  avl = remove_int(avl, 924);
+  avl = gpr_avl_add(avl, box(53), box(220));
+  avl = remove_int(avl, 657);
+  avl = gpr_avl_add(avl, box(130), box(222));
+  avl = gpr_avl_add(avl, box(239), box(223));
+  avl = remove_int(avl, 20);
+  avl = gpr_avl_add(avl, box(117), box(225));
+  avl = remove_int(avl, 882);
+  avl = remove_int(avl, 891);
+  avl = gpr_avl_add(avl, box(9), box(228));
+  avl = gpr_avl_add(avl, box(496), box(229));
+  avl = gpr_avl_add(avl, box(750), box(230));
+  avl = gpr_avl_add(avl, box(283), box(231));
+  avl = gpr_avl_add(avl, box(802), box(232));
+  avl = remove_int(avl, 352);
+  avl = gpr_avl_add(avl, box(374), box(234));
+  avl = gpr_avl_add(avl, box(6), box(235));
+  avl = gpr_avl_add(avl, box(756), box(236));
+  avl = gpr_avl_add(avl, box(597), box(237));
+  avl = gpr_avl_add(avl, box(661), box(238));
+  avl = remove_int(avl, 96);
+  avl = gpr_avl_add(avl, box(894), box(240));
+  avl = remove_int(avl, 749);
+  avl = gpr_avl_add(avl, box(71), box(242));
+  avl = remove_int(avl, 68);
+  avl = gpr_avl_add(avl, box(388), box(244));
+  avl = remove_int(avl, 119);
+  avl = remove_int(avl, 856);
+  avl = gpr_avl_add(avl, box(176), box(247));
+  avl = gpr_avl_add(avl, box(993), box(248));
+  avl = remove_int(avl, 178);
+  avl = remove_int(avl, 781);
+  avl = remove_int(avl, 771);
+  avl = remove_int(avl, 848);
+  avl = remove_int(avl, 376);
+  avl = remove_int(avl, 157);
+  avl = remove_int(avl, 142);
+  avl = remove_int(avl, 686);
+  avl = gpr_avl_add(avl, box(779), box(257));
+  avl = gpr_avl_add(avl, box(484), box(258));
+  avl = remove_int(avl, 837);
+  avl = gpr_avl_add(avl, box(388), box(260));
+  avl = remove_int(avl, 987);
+  avl = gpr_avl_add(avl, box(336), box(262));
+  avl = remove_int(avl, 855);
+  avl = gpr_avl_add(avl, box(668), box(264));
+  avl = remove_int(avl, 648);
+  avl = gpr_avl_add(avl, box(193), box(266));
+  avl = remove_int(avl, 939);
+  avl = gpr_avl_add(avl, box(740), box(268));
+  avl = gpr_avl_add(avl, box(503), box(269));
+  avl = gpr_avl_add(avl, box(765), box(270));
+  avl = remove_int(avl, 924);
+  avl = remove_int(avl, 513);
+  avl = gpr_avl_add(avl, box(161), box(273));
+  avl = gpr_avl_add(avl, box(502), box(274));
+  avl = gpr_avl_add(avl, box(846), box(275));
+  avl = remove_int(avl, 931);
+  avl = gpr_avl_add(avl, box(87), box(277));
+  avl = gpr_avl_add(avl, box(949), box(278));
+  avl = gpr_avl_add(avl, box(548), box(279));
+  avl = gpr_avl_add(avl, box(951), box(280));
+  avl = remove_int(avl, 1018);
+  avl = remove_int(avl, 568);
+  avl = gpr_avl_add(avl, box(138), box(283));
+  avl = gpr_avl_add(avl, box(202), box(284));
+  avl = gpr_avl_add(avl, box(157), box(285));
+  avl = gpr_avl_add(avl, box(264), box(286));
+  avl = gpr_avl_add(avl, box(370), box(287));
+  avl = remove_int(avl, 736);
+  avl = remove_int(avl, 751);
+  avl = remove_int(avl, 506);
+  avl = remove_int(avl, 81);
+  avl = remove_int(avl, 358);
+  avl = remove_int(avl, 657);
+  avl = remove_int(avl, 86);
+  avl = gpr_avl_add(avl, box(876), box(295));
+  avl = remove_int(avl, 354);
+  avl = gpr_avl_add(avl, box(134), box(297));
+  avl = remove_int(avl, 781);
+  avl = remove_int(avl, 183);
+  avl = gpr_avl_add(avl, box(914), box(300));
+  avl = remove_int(avl, 926);
+  avl = remove_int(avl, 398);
+  avl = remove_int(avl, 932);
+  avl = remove_int(avl, 804);
+  avl = remove_int(avl, 326);
+  avl = gpr_avl_add(avl, box(208), box(306));
+  avl = gpr_avl_add(avl, box(699), box(307));
+  avl = remove_int(avl, 576);
+  avl = remove_int(avl, 850);
+  avl = remove_int(avl, 514);
+  avl = remove_int(avl, 676);
+  avl = remove_int(avl, 549);
+  avl = remove_int(avl, 767);
+  avl = gpr_avl_add(avl, box(58), box(314));
+  avl = gpr_avl_add(avl, box(265), box(315));
+  avl = gpr_avl_add(avl, box(268), box(316));
+  avl = gpr_avl_add(avl, box(103), box(317));
+  avl = gpr_avl_add(avl, box(440), box(318));
+  avl = remove_int(avl, 777);
+  avl = gpr_avl_add(avl, box(670), box(320));
+  avl = remove_int(avl, 506);
+  avl = remove_int(avl, 487);
+  avl = gpr_avl_add(avl, box(421), box(323));
+  avl = remove_int(avl, 514);
+  avl = gpr_avl_add(avl, box(701), box(325));
+  avl = remove_int(avl, 949);
+  avl = remove_int(avl, 872);
+  avl = remove_int(avl, 139);
+  avl = gpr_avl_add(avl, box(781), box(329));
+  avl = gpr_avl_add(avl, box(543), box(330));
+  avl = gpr_avl_add(avl, box(147), box(331));
+  avl = remove_int(avl, 190);
+  avl = gpr_avl_add(avl, box(453), box(333));
+  avl = remove_int(avl, 262);
+  avl = remove_int(avl, 850);
+  avl = remove_int(avl, 286);
+  avl = remove_int(avl, 787);
+  avl = gpr_avl_add(avl, box(514), box(338));
+  avl = remove_int(avl, 812);
+  avl = gpr_avl_add(avl, box(431), box(340));
+  avl = gpr_avl_add(avl, box(8), box(341));
+  avl = remove_int(avl, 843);
+  avl = gpr_avl_add(avl, box(831), box(343));
+  avl = remove_int(avl, 472);
+  avl = remove_int(avl, 157);
+  avl = gpr_avl_add(avl, box(612), box(346));
+  avl = gpr_avl_add(avl, box(802), box(347));
+  avl = remove_int(avl, 554);
+  avl = gpr_avl_add(avl, box(409), box(349));
+  avl = gpr_avl_add(avl, box(439), box(350));
+  avl = gpr_avl_add(avl, box(725), box(351));
+  avl = gpr_avl_add(avl, box(568), box(352));
+  avl = remove_int(avl, 475);
+  avl = remove_int(avl, 672);
+  avl = remove_int(avl, 62);
+  avl = remove_int(avl, 753);
+  avl = gpr_avl_add(avl, box(435), box(357));
+  avl = gpr_avl_add(avl, box(950), box(358));
+  avl = gpr_avl_add(avl, box(532), box(359));
+  avl = gpr_avl_add(avl, box(832), box(360));
+  avl = remove_int(avl, 390);
+  avl = gpr_avl_add(avl, box(993), box(362));
+  avl = remove_int(avl, 198);
+  avl = remove_int(avl, 401);
+  avl = gpr_avl_add(avl, box(316), box(365));
+  avl = remove_int(avl, 843);
+  avl = gpr_avl_add(avl, box(541), box(367));
+  avl = gpr_avl_add(avl, box(505), box(368));
+  avl = remove_int(avl, 445);
+  avl = remove_int(avl, 256);
+  avl = gpr_avl_add(avl, box(232), box(371));
+  avl = remove_int(avl, 577);
+  avl = remove_int(avl, 558);
+  avl = gpr_avl_add(avl, box(910), box(374));
+  avl = remove_int(avl, 902);
+  avl = remove_int(avl, 755);
+  avl = remove_int(avl, 114);
+  avl = remove_int(avl, 438);
+  avl = remove_int(avl, 224);
+  avl = gpr_avl_add(avl, box(920), box(380));
+  avl = gpr_avl_add(avl, box(655), box(381));
+  avl = remove_int(avl, 557);
+  avl = remove_int(avl, 102);
+  avl = remove_int(avl, 165);
+  avl = gpr_avl_add(avl, box(191), box(385));
+  avl = remove_int(avl, 30);
+  avl = gpr_avl_add(avl, box(406), box(387));
+  avl = gpr_avl_add(avl, box(66), box(388));
+  avl = gpr_avl_add(avl, box(87), box(389));
+  avl = remove_int(avl, 7);
+  avl = remove_int(avl, 671);
+  avl = gpr_avl_add(avl, box(234), box(392));
+  avl = remove_int(avl, 463);
+  avl = gpr_avl_add(avl, box(75), box(394));
+  avl = gpr_avl_add(avl, box(487), box(395));
+  avl = remove_int(avl, 203);
+  avl = gpr_avl_add(avl, box(711), box(397));
+  avl = remove_int(avl, 291);
+  avl = remove_int(avl, 798);
+  avl = remove_int(avl, 337);
+  avl = gpr_avl_add(avl, box(877), box(401));
+  avl = gpr_avl_add(avl, box(388), box(402));
+  avl = remove_int(avl, 975);
+  avl = gpr_avl_add(avl, box(200), box(404));
+  avl = gpr_avl_add(avl, box(408), box(405));
+  avl = gpr_avl_add(avl, box(3), box(406));
+  avl = gpr_avl_add(avl, box(971), box(407));
+  avl = remove_int(avl, 841);
+  avl = remove_int(avl, 910);
+  avl = remove_int(avl, 74);
+  avl = remove_int(avl, 888);
+  avl = gpr_avl_add(avl, box(492), box(412));
+  avl = remove_int(avl, 14);
+  avl = remove_int(avl, 364);
+  avl = gpr_avl_add(avl, box(215), box(415));
+  avl = remove_int(avl, 778);
+  avl = remove_int(avl, 45);
+  avl = gpr_avl_add(avl, box(328), box(418));
+  avl = gpr_avl_add(avl, box(597), box(419));
+  avl = remove_int(avl, 34);
+  avl = gpr_avl_add(avl, box(736), box(421));
+  avl = remove_int(avl, 37);
+  avl = gpr_avl_add(avl, box(275), box(423));
+  avl = gpr_avl_add(avl, box(70), box(424));
+  avl = gpr_avl_add(avl, box(771), box(425));
+  avl = remove_int(avl, 536);
+  avl = remove_int(avl, 421);
+  avl = gpr_avl_add(avl, box(186), box(428));
+  avl = gpr_avl_add(avl, box(788), box(429));
+  avl = gpr_avl_add(avl, box(224), box(430));
+  avl = remove_int(avl, 228);
+  avl = gpr_avl_add(avl, box(48), box(432));
+  avl = gpr_avl_add(avl, box(120), box(433));
+  avl = gpr_avl_add(avl, box(269), box(434));
+  avl = gpr_avl_add(avl, box(904), box(435));
+  avl = remove_int(avl, 699);
+  avl = gpr_avl_add(avl, box(340), box(437));
+  avl = remove_int(avl, 276);
+  avl = gpr_avl_add(avl, box(591), box(439));
+  avl = gpr_avl_add(avl, box(778), box(440));
+  avl = remove_int(avl, 490);
+  avl = remove_int(avl, 973);
+  avl = gpr_avl_add(avl, box(294), box(443));
+  avl = gpr_avl_add(avl, box(323), box(444));
+  avl = remove_int(avl, 685);
+  avl = gpr_avl_add(avl, box(38), box(446));
+  avl = gpr_avl_add(avl, box(525), box(447));
+  avl = remove_int(avl, 162);
+  avl = gpr_avl_add(avl, box(462), box(449));
+  avl = gpr_avl_add(avl, box(340), box(450));
+  avl = remove_int(avl, 734);
+  avl = remove_int(avl, 959);
+  avl = gpr_avl_add(avl, box(752), box(453));
+  avl = gpr_avl_add(avl, box(667), box(454));
+  avl = remove_int(avl, 558);
+  avl = remove_int(avl, 657);
+  avl = gpr_avl_add(avl, box(711), box(457));
+  avl = remove_int(avl, 937);
+  avl = gpr_avl_add(avl, box(741), box(459));
+  avl = gpr_avl_add(avl, box(40), box(460));
+  avl = remove_int(avl, 784);
+  avl = gpr_avl_add(avl, box(292), box(462));
+  avl = remove_int(avl, 164);
+  avl = remove_int(avl, 931);
+  avl = remove_int(avl, 886);
+  avl = gpr_avl_add(avl, box(968), box(466));
+  avl = remove_int(avl, 263);
+  avl = gpr_avl_add(avl, box(647), box(468));
+  avl = gpr_avl_add(avl, box(92), box(469));
+  avl = remove_int(avl, 310);
+  avl = gpr_avl_add(avl, box(711), box(471));
+  avl = gpr_avl_add(avl, box(675), box(472));
+  avl = remove_int(avl, 549);
+  avl = gpr_avl_add(avl, box(380), box(474));
+  avl = remove_int(avl, 825);
+  avl = gpr_avl_add(avl, box(668), box(476));
+  avl = remove_int(avl, 498);
+  avl = gpr_avl_add(avl, box(870), box(478));
+  avl = gpr_avl_add(avl, box(391), box(479));
+  avl = gpr_avl_add(avl, box(264), box(480));
+  avl = remove_int(avl, 1);
+  avl = remove_int(avl, 849);
+  avl = remove_int(avl, 88);
+  avl = remove_int(avl, 255);
+  avl = remove_int(avl, 763);
+  avl = remove_int(avl, 831);
+  avl = gpr_avl_add(avl, box(508), box(487));
+  avl = remove_int(avl, 849);
+  avl = remove_int(avl, 47);
+  avl = gpr_avl_add(avl, box(299), box(490));
+  avl = remove_int(avl, 625);
+  avl = remove_int(avl, 433);
+  avl = remove_int(avl, 904);
+  avl = remove_int(avl, 761);
+  avl = gpr_avl_add(avl, box(33), box(495));
+  avl = gpr_avl_add(avl, box(524), box(496));
+  avl = remove_int(avl, 210);
+  avl = remove_int(avl, 299);
+  avl = gpr_avl_add(avl, box(823), box(499));
+  avl = remove_int(avl, 479);
+  avl = remove_int(avl, 96);
+  avl = remove_int(avl, 1013);
+  avl = gpr_avl_add(avl, box(768), box(503));
+  avl = remove_int(avl, 638);
+  avl = remove_int(avl, 20);
+  avl = gpr_avl_add(avl, box(663), box(506));
+  avl = remove_int(avl, 882);
+  avl = gpr_avl_add(avl, box(745), box(508));
+  avl = remove_int(avl, 352);
+  avl = gpr_avl_add(avl, box(10), box(510));
+  avl = remove_int(avl, 484);
+  avl = gpr_avl_add(avl, box(420), box(512));
+  avl = gpr_avl_add(avl, box(884), box(513));
+  avl = gpr_avl_add(avl, box(993), box(514));
+  avl = gpr_avl_add(avl, box(251), box(515));
+  avl = remove_int(avl, 222);
+  avl = gpr_avl_add(avl, box(734), box(517));
+  avl = gpr_avl_add(avl, box(952), box(518));
+  avl = remove_int(avl, 26);
+  avl = remove_int(avl, 270);
+  avl = remove_int(avl, 481);
+  avl = remove_int(avl, 693);
+  avl = remove_int(avl, 1006);
+  avl = gpr_avl_add(avl, box(77), box(524));
+  avl = remove_int(avl, 897);
+  avl = gpr_avl_add(avl, box(719), box(526));
+  avl = gpr_avl_add(avl, box(622), box(527));
+  avl = remove_int(avl, 28);
+  avl = remove_int(avl, 836);
+  avl = remove_int(avl, 142);
+  avl = gpr_avl_add(avl, box(445), box(531));
+  avl = gpr_avl_add(avl, box(410), box(532));
+  avl = remove_int(avl, 575);
+  avl = gpr_avl_add(avl, box(634), box(534));
+  avl = gpr_avl_add(avl, box(906), box(535));
+  avl = remove_int(avl, 649);
+  avl = gpr_avl_add(avl, box(813), box(537));
+  avl = remove_int(avl, 702);
+  avl = remove_int(avl, 732);
+  avl = gpr_avl_add(avl, box(105), box(540));
+  avl = gpr_avl_add(avl, box(867), box(541));
+  avl = remove_int(avl, 964);
+  avl = remove_int(avl, 941);
+  avl = gpr_avl_add(avl, box(947), box(544));
+  avl = remove_int(avl, 990);
+  avl = gpr_avl_add(avl, box(816), box(546));
+  avl = remove_int(avl, 429);
+  avl = remove_int(avl, 567);
+  avl = remove_int(avl, 541);
+  avl = remove_int(avl, 583);
+  avl = gpr_avl_add(avl, box(57), box(551));
+  avl = gpr_avl_add(avl, box(786), box(552));
+  avl = gpr_avl_add(avl, box(526), box(553));
+  avl = remove_int(avl, 642);
+  avl = remove_int(avl, 220);
+  avl = remove_int(avl, 840);
+  avl = remove_int(avl, 548);
+  avl = gpr_avl_add(avl, box(528), box(558));
+  avl = gpr_avl_add(avl, box(749), box(559));
+  avl = gpr_avl_add(avl, box(194), box(560));
+  avl = remove_int(avl, 517);
+  avl = gpr_avl_add(avl, box(102), box(562));
+  avl = remove_int(avl, 189);
+  avl = gpr_avl_add(avl, box(927), box(564));
+  avl = remove_int(avl, 846);
+  avl = remove_int(avl, 130);
+  avl = gpr_avl_add(avl, box(694), box(567));
+  avl = remove_int(avl, 750);
+  avl = gpr_avl_add(avl, box(357), box(569));
+  avl = remove_int(avl, 431);
+  avl = remove_int(avl, 91);
+  avl = gpr_avl_add(avl, box(640), box(572));
+  avl = remove_int(avl, 4);
+  avl = gpr_avl_add(avl, box(81), box(574));
+  avl = gpr_avl_add(avl, box(595), box(575));
+  avl = remove_int(avl, 444);
+  avl = remove_int(avl, 262);
+  avl = remove_int(avl, 11);
+  avl = gpr_avl_add(avl, box(192), box(579));
+  avl = gpr_avl_add(avl, box(158), box(580));
+  avl = remove_int(avl, 401);
+  avl = remove_int(avl, 918);
+  avl = gpr_avl_add(avl, box(180), box(583));
+  avl = remove_int(avl, 268);
+  avl = gpr_avl_add(avl, box(1012), box(585));
+  avl = gpr_avl_add(avl, box(90), box(586));
+  avl = gpr_avl_add(avl, box(946), box(587));
+  avl = remove_int(avl, 719);
+  avl = gpr_avl_add(avl, box(874), box(589));
+  avl = gpr_avl_add(avl, box(679), box(590));
+  avl = remove_int(avl, 53);
+  avl = remove_int(avl, 534);
+  avl = gpr_avl_add(avl, box(646), box(593));
+  avl = gpr_avl_add(avl, box(767), box(594));
+  avl = gpr_avl_add(avl, box(460), box(595));
+  avl = gpr_avl_add(avl, box(852), box(596));
+  avl = gpr_avl_add(avl, box(189), box(597));
+  avl = remove_int(avl, 932);
+  avl = remove_int(avl, 366);
+  avl = remove_int(avl, 907);
+  avl = gpr_avl_add(avl, box(875), box(601));
+  avl = gpr_avl_add(avl, box(434), box(602));
+  avl = gpr_avl_add(avl, box(704), box(603));
+  avl = gpr_avl_add(avl, box(724), box(604));
+  avl = gpr_avl_add(avl, box(930), box(605));
+  avl = gpr_avl_add(avl, box(1000), box(606));
+  avl = remove_int(avl, 479);
+  avl = gpr_avl_add(avl, box(275), box(608));
+  avl = remove_int(avl, 32);
+  avl = gpr_avl_add(avl, box(939), box(610));
+  avl = remove_int(avl, 943);
+  avl = remove_int(avl, 329);
+  avl = gpr_avl_add(avl, box(490), box(613));
+  avl = remove_int(avl, 477);
+  avl = remove_int(avl, 414);
+  avl = remove_int(avl, 187);
+  avl = remove_int(avl, 334);
+  avl = gpr_avl_add(avl, box(40), box(618));
+  avl = remove_int(avl, 751);
+  avl = gpr_avl_add(avl, box(568), box(620));
+  avl = gpr_avl_add(avl, box(120), box(621));
+  avl = gpr_avl_add(avl, box(617), box(622));
+  avl = gpr_avl_add(avl, box(32), box(623));
+  avl = remove_int(avl, 701);
+  avl = gpr_avl_add(avl, box(910), box(625));
+  avl = remove_int(avl, 557);
+  avl = remove_int(avl, 361);
+  avl = remove_int(avl, 937);
+  avl = remove_int(avl, 100);
+  avl = remove_int(avl, 684);
+  avl = gpr_avl_add(avl, box(751), box(631));
+  avl = remove_int(avl, 781);
+  avl = remove_int(avl, 469);
+  avl = remove_int(avl, 75);
+  avl = remove_int(avl, 561);
+  avl = gpr_avl_add(avl, box(854), box(636));
+  avl = remove_int(avl, 164);
+  avl = remove_int(avl, 258);
+  avl = remove_int(avl, 315);
+  avl = remove_int(avl, 261);
+  avl = gpr_avl_add(avl, box(552), box(641));
+  avl = gpr_avl_add(avl, box(6), box(642));
+  avl = gpr_avl_add(avl, box(680), box(643));
+  avl = remove_int(avl, 741);
+  avl = remove_int(avl, 309);
+  avl = remove_int(avl, 272);
+  avl = gpr_avl_add(avl, box(249), box(647));
+  avl = remove_int(avl, 97);
+  avl = remove_int(avl, 850);
+  avl = gpr_avl_add(avl, box(915), box(650));
+  avl = gpr_avl_add(avl, box(816), box(651));
+  avl = gpr_avl_add(avl, box(45), box(652));
+  avl = gpr_avl_add(avl, box(168), box(653));
+  avl = remove_int(avl, 153);
+  avl = remove_int(avl, 239);
+  avl = gpr_avl_add(avl, box(684), box(656));
+  avl = gpr_avl_add(avl, box(208), box(657));
+  avl = gpr_avl_add(avl, box(681), box(658));
+  avl = gpr_avl_add(avl, box(609), box(659));
+  avl = gpr_avl_add(avl, box(645), box(660));
+  avl = remove_int(avl, 799);
+  avl = gpr_avl_add(avl, box(955), box(662));
+  avl = gpr_avl_add(avl, box(946), box(663));
+  avl = gpr_avl_add(avl, box(744), box(664));
+  avl = gpr_avl_add(avl, box(201), box(665));
+  avl = gpr_avl_add(avl, box(136), box(666));
+  avl = remove_int(avl, 357);
+  avl = gpr_avl_add(avl, box(974), box(668));
+  avl = remove_int(avl, 485);
+  avl = gpr_avl_add(avl, box(1009), box(670));
+  avl = gpr_avl_add(avl, box(517), box(671));
+  avl = remove_int(avl, 491);
+  avl = gpr_avl_add(avl, box(336), box(673));
+  avl = gpr_avl_add(avl, box(589), box(674));
+  avl = remove_int(avl, 546);
+  avl = remove_int(avl, 840);
+  avl = remove_int(avl, 104);
+  avl = remove_int(avl, 347);
+  avl = gpr_avl_add(avl, box(801), box(679));
+  avl = remove_int(avl, 799);
+  avl = remove_int(avl, 702);
+  avl = remove_int(avl, 996);
+  avl = remove_int(avl, 93);
+  avl = gpr_avl_add(avl, box(561), box(684));
+  avl = gpr_avl_add(avl, box(25), box(685));
+  avl = remove_int(avl, 278);
+  avl = gpr_avl_add(avl, box(191), box(687));
+  avl = remove_int(avl, 243);
+  avl = remove_int(avl, 918);
+  avl = remove_int(avl, 449);
+  avl = gpr_avl_add(avl, box(19), box(691));
+  avl = gpr_avl_add(avl, box(762), box(692));
+  avl = gpr_avl_add(avl, box(13), box(693));
+  avl = gpr_avl_add(avl, box(151), box(694));
+  avl = gpr_avl_add(avl, box(152), box(695));
+  avl = gpr_avl_add(avl, box(793), box(696));
+  avl = remove_int(avl, 862);
+  avl = remove_int(avl, 890);
+  avl = gpr_avl_add(avl, box(687), box(699));
+  avl = gpr_avl_add(avl, box(509), box(700));
+  avl = gpr_avl_add(avl, box(973), box(701));
+  avl = remove_int(avl, 230);
+  avl = gpr_avl_add(avl, box(532), box(703));
+  avl = remove_int(avl, 668);
+  avl = gpr_avl_add(avl, box(281), box(705));
+  avl = gpr_avl_add(avl, box(867), box(706));
+  avl = gpr_avl_add(avl, box(359), box(707));
+  avl = remove_int(avl, 425);
+  avl = gpr_avl_add(avl, box(691), box(709));
+  avl = gpr_avl_add(avl, box(163), box(710));
+  avl = gpr_avl_add(avl, box(502), box(711));
+  avl = remove_int(avl, 674);
+  avl = gpr_avl_add(avl, box(697), box(713));
+  avl = remove_int(avl, 271);
+  avl = gpr_avl_add(avl, box(968), box(715));
+  avl = gpr_avl_add(avl, box(48), box(716));
+  avl = remove_int(avl, 543);
+  avl = gpr_avl_add(avl, box(35), box(718));
+  avl = gpr_avl_add(avl, box(751), box(719));
+  avl = gpr_avl_add(avl, box(478), box(720));
+  avl = remove_int(avl, 797);
+  avl = remove_int(avl, 309);
+  avl = gpr_avl_add(avl, box(927), box(723));
+  avl = remove_int(avl, 504);
+  avl = gpr_avl_add(avl, box(286), box(725));
+  avl = gpr_avl_add(avl, box(413), box(726));
+  avl = gpr_avl_add(avl, box(599), box(727));
+  avl = remove_int(avl, 105);
+  avl = remove_int(avl, 605);
+  avl = gpr_avl_add(avl, box(632), box(730));
+  avl = gpr_avl_add(avl, box(133), box(731));
+  avl = remove_int(avl, 443);
+  avl = gpr_avl_add(avl, box(958), box(733));
+  avl = gpr_avl_add(avl, box(729), box(734));
+  avl = remove_int(avl, 158);
+  avl = gpr_avl_add(avl, box(694), box(736));
+  avl = gpr_avl_add(avl, box(505), box(737));
+  avl = remove_int(avl, 63);
+  avl = remove_int(avl, 714);
+  avl = gpr_avl_add(avl, box(1002), box(740));
+  avl = remove_int(avl, 211);
+  avl = gpr_avl_add(avl, box(765), box(742));
+  avl = gpr_avl_add(avl, box(455), box(743));
+  avl = remove_int(avl, 59);
+  avl = remove_int(avl, 224);
+  avl = gpr_avl_add(avl, box(586), box(746));
+  avl = gpr_avl_add(avl, box(348), box(747));
+  avl = remove_int(avl, 10);
+  avl = remove_int(avl, 484);
+  avl = gpr_avl_add(avl, box(968), box(750));
+  avl = gpr_avl_add(avl, box(923), box(751));
+  avl = remove_int(avl, 573);
+  avl = remove_int(avl, 617);
+  avl = gpr_avl_add(avl, box(812), box(754));
+  avl = gpr_avl_add(avl, box(179), box(755));
+  avl = remove_int(avl, 284);
+  avl = remove_int(avl, 157);
+  avl = remove_int(avl, 177);
+  avl = remove_int(avl, 896);
+  avl = gpr_avl_add(avl, box(649), box(760));
+  avl = gpr_avl_add(avl, box(927), box(761));
+  avl = gpr_avl_add(avl, box(454), box(762));
+  avl = gpr_avl_add(avl, box(217), box(763));
+  avl = remove_int(avl, 534);
+  avl = gpr_avl_add(avl, box(180), box(765));
+  avl = gpr_avl_add(avl, box(319), box(766));
+  avl = remove_int(avl, 92);
+  avl = gpr_avl_add(avl, box(483), box(768));
+  avl = remove_int(avl, 504);
+  avl = remove_int(avl, 1017);
+  avl = remove_int(avl, 37);
+  avl = remove_int(avl, 50);
+  avl = gpr_avl_add(avl, box(302), box(773));
+  avl = remove_int(avl, 807);
+  avl = gpr_avl_add(avl, box(463), box(775));
+  avl = gpr_avl_add(avl, box(271), box(776));
+  avl = gpr_avl_add(avl, box(644), box(777));
+  avl = remove_int(avl, 618);
+  avl = gpr_avl_add(avl, box(166), box(779));
+  avl = gpr_avl_add(avl, box(538), box(780));
+  avl = remove_int(avl, 606);
+  avl = gpr_avl_add(avl, box(425), box(782));
+  avl = remove_int(avl, 725);
+  avl = remove_int(avl, 383);
+  avl = gpr_avl_add(avl, box(155), box(785));
+  avl = remove_int(avl, 889);
+  avl = gpr_avl_add(avl, box(653), box(787));
+  avl = remove_int(avl, 386);
+  avl = gpr_avl_add(avl, box(142), box(789));
+  avl = remove_int(avl, 107);
+  avl = remove_int(avl, 603);
+  avl = remove_int(avl, 971);
+  avl = gpr_avl_add(avl, box(80), box(793));
+  avl = gpr_avl_add(avl, box(61), box(794));
+  avl = gpr_avl_add(avl, box(693), box(795));
+  avl = gpr_avl_add(avl, box(592), box(796));
+  avl = gpr_avl_add(avl, box(433), box(797));
+  avl = gpr_avl_add(avl, box(973), box(798));
+  avl = remove_int(avl, 901);
+  avl = remove_int(avl, 340);
+  avl = remove_int(avl, 709);
+  avl = gpr_avl_add(avl, box(224), box(802));
+  avl = remove_int(avl, 120);
+  avl = remove_int(avl, 271);
+  avl = gpr_avl_add(avl, box(780), box(805));
+  avl = gpr_avl_add(avl, box(867), box(806));
+  avl = gpr_avl_add(avl, box(756), box(807));
+  avl = gpr_avl_add(avl, box(583), box(808));
+  avl = gpr_avl_add(avl, box(356), box(809));
+  avl = gpr_avl_add(avl, box(58), box(810));
+  avl = remove_int(avl, 219);
+  avl = gpr_avl_add(avl, box(301), box(812));
+  avl = remove_int(avl, 643);
+  avl = remove_int(avl, 787);
+  avl = remove_int(avl, 583);
+  avl = remove_int(avl, 552);
+  avl = remove_int(avl, 308);
+  avl = remove_int(avl, 608);
+  avl = remove_int(avl, 363);
+  avl = remove_int(avl, 690);
+  avl = gpr_avl_add(avl, box(233), box(821));
+  avl = gpr_avl_add(avl, box(479), box(822));
+  avl = gpr_avl_add(avl, box(323), box(823));
+  avl = gpr_avl_add(avl, box(802), box(824));
+  avl = remove_int(avl, 682);
+  avl = remove_int(avl, 705);
+  avl = remove_int(avl, 487);
+  avl = gpr_avl_add(avl, box(530), box(828));
+  avl = gpr_avl_add(avl, box(232), box(829));
+  avl = remove_int(avl, 627);
+  avl = gpr_avl_add(avl, box(396), box(831));
+  avl = gpr_avl_add(avl, box(61), box(832));
+  avl = gpr_avl_add(avl, box(932), box(833));
+  avl = gpr_avl_add(avl, box(108), box(834));
+  avl = gpr_avl_add(avl, box(524), box(835));
+  avl = remove_int(avl, 390);
+  avl = remove_int(avl, 307);
+  avl = gpr_avl_add(avl, box(722), box(838));
+  avl = gpr_avl_add(avl, box(907), box(839));
+  avl = remove_int(avl, 286);
+  avl = remove_int(avl, 337);
+  avl = remove_int(avl, 443);
+  avl = gpr_avl_add(avl, box(973), box(843));
+  avl = remove_int(avl, 930);
+  avl = remove_int(avl, 242);
+  avl = gpr_avl_add(avl, box(997), box(846));
+  avl = gpr_avl_add(avl, box(689), box(847));
+  avl = remove_int(avl, 318);
+  avl = gpr_avl_add(avl, box(703), box(849));
+  avl = gpr_avl_add(avl, box(868), box(850));
+  avl = gpr_avl_add(avl, box(200), box(851));
+  avl = gpr_avl_add(avl, box(960), box(852));
+  avl = gpr_avl_add(avl, box(80), box(853));
+  avl = remove_int(avl, 113);
+  avl = gpr_avl_add(avl, box(135), box(855));
+  avl = remove_int(avl, 529);
+  avl = gpr_avl_add(avl, box(366), box(857));
+  avl = remove_int(avl, 272);
+  avl = gpr_avl_add(avl, box(921), box(859));
+  avl = remove_int(avl, 497);
+  avl = gpr_avl_add(avl, box(712), box(861));
+  avl = remove_int(avl, 777);
+  avl = remove_int(avl, 505);
+  avl = remove_int(avl, 974);
+  avl = remove_int(avl, 497);
+  avl = gpr_avl_add(avl, box(388), box(866));
+  avl = gpr_avl_add(avl, box(29), box(867));
+  avl = gpr_avl_add(avl, box(180), box(868));
+  avl = gpr_avl_add(avl, box(983), box(869));
+  avl = gpr_avl_add(avl, box(72), box(870));
+  avl = gpr_avl_add(avl, box(693), box(871));
+  avl = gpr_avl_add(avl, box(567), box(872));
+  avl = remove_int(avl, 549);
+  avl = remove_int(avl, 351);
+  avl = gpr_avl_add(avl, box(1019), box(875));
+  avl = remove_int(avl, 585);
+  avl = remove_int(avl, 294);
+  avl = remove_int(avl, 61);
+  avl = gpr_avl_add(avl, box(409), box(879));
+  avl = gpr_avl_add(avl, box(984), box(880));
+  avl = gpr_avl_add(avl, box(830), box(881));
+  avl = remove_int(avl, 579);
+  avl = gpr_avl_add(avl, box(672), box(883));
+  avl = remove_int(avl, 968);
+
+  gpr_avl_unref(avl);
+}
+
+static void test_badcase3(void) {
+  gpr_avl avl;
+
+  gpr_log(GPR_DEBUG, "test_badcase3");
+
+  avl = gpr_avl_create(&int_int_vtable);
+  avl = remove_int(avl, 624);
+  avl = gpr_avl_add(avl, box(59), box(2));
+  avl = gpr_avl_add(avl, box(494), box(3));
+  avl = gpr_avl_add(avl, box(226), box(4));
+  avl = remove_int(avl, 524);
+  avl = gpr_avl_add(avl, box(540), box(6));
+  avl = remove_int(avl, 1008);
+  avl = gpr_avl_add(avl, box(502), box(8));
+  avl = remove_int(avl, 267);
+  avl = remove_int(avl, 764);
+  avl = remove_int(avl, 443);
+  avl = gpr_avl_add(avl, box(8), box(12));
+  avl = remove_int(avl, 291);
+  avl = remove_int(avl, 796);
+  avl = remove_int(avl, 1002);
+  avl = gpr_avl_add(avl, box(778), box(16));
+  avl = remove_int(avl, 621);
+  avl = remove_int(avl, 891);
+  avl = remove_int(avl, 880);
+  avl = gpr_avl_add(avl, box(197), box(20));
+  avl = gpr_avl_add(avl, box(441), box(21));
+  avl = gpr_avl_add(avl, box(719), box(22));
+  avl = remove_int(avl, 109);
+  avl = gpr_avl_add(avl, box(458), box(24));
+  avl = remove_int(avl, 86);
+  avl = gpr_avl_add(avl, box(897), box(26));
+  avl = gpr_avl_add(avl, box(997), box(27));
+  avl = remove_int(avl, 235);
+  avl = remove_int(avl, 425);
+  avl = remove_int(avl, 186);
+  avl = gpr_avl_add(avl, box(887), box(31));
+  avl = gpr_avl_add(avl, box(1005), box(32));
+  avl = gpr_avl_add(avl, box(778), box(33));
+  avl = gpr_avl_add(avl, box(575), box(34));
+  avl = remove_int(avl, 966);
+  avl = remove_int(avl, 1015);
+  avl = gpr_avl_add(avl, box(486), box(37));
+  avl = gpr_avl_add(avl, box(809), box(38));
+  avl = gpr_avl_add(avl, box(907), box(39));
+  avl = gpr_avl_add(avl, box(971), box(40));
+  avl = remove_int(avl, 441);
+  avl = remove_int(avl, 498);
+  avl = gpr_avl_add(avl, box(727), box(43));
+  avl = remove_int(avl, 679);
+  avl = remove_int(avl, 740);
+  avl = remove_int(avl, 532);
+  avl = gpr_avl_add(avl, box(805), box(47));
+  avl = remove_int(avl, 64);
+  avl = gpr_avl_add(avl, box(362), box(49));
+  avl = gpr_avl_add(avl, box(170), box(50));
+  avl = gpr_avl_add(avl, box(389), box(51));
+  avl = gpr_avl_add(avl, box(689), box(52));
+  avl = remove_int(avl, 871);
+  avl = gpr_avl_add(avl, box(447), box(54));
+  avl = remove_int(avl, 718);
+  avl = gpr_avl_add(avl, box(724), box(56));
+  avl = remove_int(avl, 215);
+  avl = gpr_avl_add(avl, box(550), box(58));
+  avl = remove_int(avl, 932);
+  avl = gpr_avl_add(avl, box(47), box(60));
+  avl = remove_int(avl, 46);
+  avl = remove_int(avl, 229);
+  avl = gpr_avl_add(avl, box(68), box(63));
+  avl = gpr_avl_add(avl, box(387), box(64));
+  avl = remove_int(avl, 933);
+  avl = remove_int(avl, 736);
+  avl = remove_int(avl, 719);
+  avl = gpr_avl_add(avl, box(150), box(68));
+  avl = remove_int(avl, 875);
+  avl = remove_int(avl, 298);
+  avl = gpr_avl_add(avl, box(991), box(71));
+  avl = remove_int(avl, 705);
+  avl = gpr_avl_add(avl, box(197), box(73));
+  avl = gpr_avl_add(avl, box(101), box(74));
+  avl = remove_int(avl, 436);
+  avl = gpr_avl_add(avl, box(755), box(76));
+  avl = gpr_avl_add(avl, box(727), box(77));
+  avl = remove_int(avl, 309);
+  avl = remove_int(avl, 253);
+  avl = gpr_avl_add(avl, box(203), box(80));
+  avl = remove_int(avl, 231);
+  avl = gpr_avl_add(avl, box(461), box(82));
+  avl = remove_int(avl, 316);
+  avl = remove_int(avl, 493);
+  avl = gpr_avl_add(avl, box(184), box(85));
+  avl = remove_int(avl, 737);
+  avl = gpr_avl_add(avl, box(790), box(87));
+  avl = gpr_avl_add(avl, box(335), box(88));
+  avl = remove_int(avl, 649);
+  avl = gpr_avl_add(avl, box(69), box(90));
+  avl = remove_int(avl, 585);
+  avl = remove_int(avl, 543);
+  avl = gpr_avl_add(avl, box(784), box(93));
+  avl = gpr_avl_add(avl, box(60), box(94));
+  avl = gpr_avl_add(avl, box(525), box(95));
+  avl = gpr_avl_add(avl, box(177), box(96));
+  avl = gpr_avl_add(avl, box(178), box(97));
+  avl = gpr_avl_add(avl, box(683), box(98));
+  avl = gpr_avl_add(avl, box(226), box(99));
+  avl = gpr_avl_add(avl, box(662), box(100));
+  avl = remove_int(avl, 944);
+  avl = gpr_avl_add(avl, box(562), box(102));
+  avl = gpr_avl_add(avl, box(793), box(103));
+  avl = remove_int(avl, 673);
+  avl = gpr_avl_add(avl, box(310), box(105));
+  avl = remove_int(avl, 479);
+  avl = remove_int(avl, 543);
+  avl = remove_int(avl, 159);
+  avl = remove_int(avl, 850);
+  avl = gpr_avl_add(avl, box(318), box(110));
+  avl = gpr_avl_add(avl, box(483), box(111));
+  avl = gpr_avl_add(avl, box(84), box(112));
+  avl = remove_int(avl, 109);
+  avl = gpr_avl_add(avl, box(132), box(114));
+  avl = gpr_avl_add(avl, box(920), box(115));
+  avl = remove_int(avl, 746);
+  avl = gpr_avl_add(avl, box(145), box(117));
+  avl = gpr_avl_add(avl, box(526), box(118));
+  avl = remove_int(avl, 158);
+  avl = gpr_avl_add(avl, box(332), box(120));
+  avl = gpr_avl_add(avl, box(918), box(121));
+  avl = remove_int(avl, 339);
+  avl = gpr_avl_add(avl, box(809), box(123));
+  avl = gpr_avl_add(avl, box(742), box(124));
+  avl = gpr_avl_add(avl, box(718), box(125));
+  avl = remove_int(avl, 988);
+  avl = remove_int(avl, 531);
+  avl = remove_int(avl, 840);
+  avl = gpr_avl_add(avl, box(816), box(129));
+  avl = gpr_avl_add(avl, box(976), box(130));
+  avl = remove_int(avl, 743);
+  avl = remove_int(avl, 528);
+  avl = remove_int(avl, 982);
+  avl = gpr_avl_add(avl, box(803), box(134));
+  avl = gpr_avl_add(avl, box(205), box(135));
+  avl = gpr_avl_add(avl, box(584), box(136));
+  avl = remove_int(avl, 923);
+  avl = remove_int(avl, 538);
+  avl = remove_int(avl, 398);
+  avl = remove_int(avl, 320);
+  avl = remove_int(avl, 292);
+  avl = gpr_avl_add(avl, box(270), box(142));
+  avl = gpr_avl_add(avl, box(333), box(143));
+  avl = remove_int(avl, 439);
+  avl = gpr_avl_add(avl, box(35), box(145));
+  avl = gpr_avl_add(avl, box(837), box(146));
+  avl = remove_int(avl, 65);
+  avl = remove_int(avl, 642);
+  avl = remove_int(avl, 371);
+  avl = remove_int(avl, 140);
+  avl = remove_int(avl, 533);
+  avl = remove_int(avl, 676);
+  avl = gpr_avl_add(avl, box(624), box(153));
+  avl = gpr_avl_add(avl, box(116), box(154));
+  avl = gpr_avl_add(avl, box(446), box(155));
+  avl = remove_int(avl, 91);
+  avl = remove_int(avl, 721);
+  avl = remove_int(avl, 537);
+  avl = gpr_avl_add(avl, box(448), box(159));
+  avl = remove_int(avl, 155);
+  avl = remove_int(avl, 344);
+  avl = remove_int(avl, 237);
+  avl = gpr_avl_add(avl, box(309), box(163));
+  avl = gpr_avl_add(avl, box(434), box(164));
+  avl = gpr_avl_add(avl, box(277), box(165));
+  avl = remove_int(avl, 233);
+  avl = gpr_avl_add(avl, box(275), box(167));
+  avl = gpr_avl_add(avl, box(218), box(168));
+  avl = gpr_avl_add(avl, box(76), box(169));
+  avl = gpr_avl_add(avl, box(898), box(170));
+  avl = remove_int(avl, 771);
+  avl = gpr_avl_add(avl, box(237), box(172));
+  avl = remove_int(avl, 327);
+  avl = gpr_avl_add(avl, box(499), box(174));
+  avl = remove_int(avl, 727);
+  avl = remove_int(avl, 234);
+  avl = remove_int(avl, 623);
+  avl = remove_int(avl, 458);
+  avl = remove_int(avl, 326);
+  avl = remove_int(avl, 589);
+  avl = gpr_avl_add(avl, box(442), box(181));
+  avl = remove_int(avl, 389);
+  avl = gpr_avl_add(avl, box(708), box(183));
+  avl = gpr_avl_add(avl, box(594), box(184));
+  avl = gpr_avl_add(avl, box(942), box(185));
+  avl = gpr_avl_add(avl, box(282), box(186));
+  avl = remove_int(avl, 434);
+  avl = remove_int(avl, 134);
+  avl = remove_int(avl, 270);
+  avl = remove_int(avl, 512);
+  avl = remove_int(avl, 265);
+  avl = remove_int(avl, 21);
+  avl = remove_int(avl, 193);
+  avl = remove_int(avl, 797);
+  avl = remove_int(avl, 347);
+  avl = gpr_avl_add(avl, box(99), box(196));
+  avl = gpr_avl_add(avl, box(161), box(197));
+  avl = remove_int(avl, 484);
+  avl = gpr_avl_add(avl, box(72), box(199));
+  avl = remove_int(avl, 629);
+  avl = gpr_avl_add(avl, box(522), box(201));
+  avl = remove_int(avl, 679);
+  avl = gpr_avl_add(avl, box(407), box(203));
+  avl = remove_int(avl, 693);
+  avl = gpr_avl_add(avl, box(424), box(205));
+  avl = gpr_avl_add(avl, box(651), box(206));
+  avl = gpr_avl_add(avl, box(927), box(207));
+  avl = remove_int(avl, 553);
+  avl = gpr_avl_add(avl, box(128), box(209));
+  avl = gpr_avl_add(avl, box(616), box(210));
+  avl = gpr_avl_add(avl, box(690), box(211));
+  avl = remove_int(avl, 241);
+  avl = remove_int(avl, 179);
+  avl = gpr_avl_add(avl, box(697), box(214));
+  avl = remove_int(avl, 779);
+  avl = gpr_avl_add(avl, box(241), box(216));
+  avl = remove_int(avl, 190);
+  avl = remove_int(avl, 210);
+  avl = gpr_avl_add(avl, box(711), box(219));
+  avl = remove_int(avl, 251);
+  avl = remove_int(avl, 61);
+  avl = gpr_avl_add(avl, box(800), box(222));
+  avl = remove_int(avl, 551);
+  avl = gpr_avl_add(avl, box(61), box(224));
+  avl = gpr_avl_add(avl, box(656), box(225));
+  avl = remove_int(avl, 130);
+  avl = remove_int(avl, 368);
+  avl = remove_int(avl, 150);
+  avl = remove_int(avl, 73);
+  avl = gpr_avl_add(avl, box(799), box(230));
+  avl = gpr_avl_add(avl, box(125), box(231));
+  avl = remove_int(avl, 107);
+  avl = gpr_avl_add(avl, box(938), box(233));
+  avl = gpr_avl_add(avl, box(914), box(234));
+  avl = gpr_avl_add(avl, box(197), box(235));
+  avl = remove_int(avl, 736);
+  avl = gpr_avl_add(avl, box(20), box(237));
+  avl = remove_int(avl, 224);
+  avl = remove_int(avl, 841);
+  avl = gpr_avl_add(avl, box(226), box(240));
+  avl = remove_int(avl, 963);
+  avl = remove_int(avl, 796);
+  avl = remove_int(avl, 728);
+  avl = gpr_avl_add(avl, box(855), box(244));
+  avl = gpr_avl_add(avl, box(769), box(245));
+  avl = gpr_avl_add(avl, box(631), box(246));
+  avl = remove_int(avl, 648);
+  avl = gpr_avl_add(avl, box(187), box(248));
+  avl = gpr_avl_add(avl, box(31), box(249));
+  avl = remove_int(avl, 163);
+  avl = gpr_avl_add(avl, box(218), box(251));
+  avl = gpr_avl_add(avl, box(488), box(252));
+  avl = gpr_avl_add(avl, box(387), box(253));
+  avl = gpr_avl_add(avl, box(809), box(254));
+  avl = gpr_avl_add(avl, box(997), box(255));
+  avl = remove_int(avl, 678);
+  avl = gpr_avl_add(avl, box(368), box(257));
+  avl = gpr_avl_add(avl, box(220), box(258));
+  avl = gpr_avl_add(avl, box(373), box(259));
+  avl = remove_int(avl, 874);
+  avl = remove_int(avl, 682);
+  avl = remove_int(avl, 1014);
+  avl = remove_int(avl, 195);
+  avl = gpr_avl_add(avl, box(868), box(264));
+  avl = remove_int(avl, 254);
+  avl = remove_int(avl, 456);
+  avl = gpr_avl_add(avl, box(906), box(267));
+  avl = remove_int(avl, 711);
+  avl = gpr_avl_add(avl, box(632), box(269));
+  avl = remove_int(avl, 474);
+  avl = gpr_avl_add(avl, box(508), box(271));
+  avl = gpr_avl_add(avl, box(518), box(272));
+  avl = remove_int(avl, 579);
+  avl = remove_int(avl, 948);
+  avl = gpr_avl_add(avl, box(789), box(275));
+  avl = gpr_avl_add(avl, box(48), box(276));
+  avl = gpr_avl_add(avl, box(256), box(277));
+  avl = gpr_avl_add(avl, box(754), box(278));
+  avl = remove_int(avl, 215);
+  avl = gpr_avl_add(avl, box(679), box(280));
+  avl = gpr_avl_add(avl, box(606), box(281));
+  avl = remove_int(avl, 941);
+  avl = remove_int(avl, 31);
+  avl = gpr_avl_add(avl, box(758), box(284));
+  avl = remove_int(avl, 101);
+  avl = gpr_avl_add(avl, box(244), box(286));
+  avl = gpr_avl_add(avl, box(337), box(287));
+  avl = gpr_avl_add(avl, box(461), box(288));
+  avl = remove_int(avl, 476);
+  avl = gpr_avl_add(avl, box(845), box(290));
+  avl = remove_int(avl, 160);
+  avl = gpr_avl_add(avl, box(690), box(292));
+  avl = remove_int(avl, 931);
+  avl = gpr_avl_add(avl, box(869), box(294));
+  avl = gpr_avl_add(avl, box(1019), box(295));
+  avl = remove_int(avl, 591);
+  avl = remove_int(avl, 635);
+  avl = remove_int(avl, 67);
+  avl = gpr_avl_add(avl, box(113), box(299));
+  avl = remove_int(avl, 305);
+  avl = gpr_avl_add(avl, box(10), box(301));
+  avl = remove_int(avl, 823);
+  avl = remove_int(avl, 288);
+  avl = remove_int(avl, 239);
+  avl = gpr_avl_add(avl, box(646), box(305));
+  avl = gpr_avl_add(avl, box(1006), box(306));
+  avl = gpr_avl_add(avl, box(954), box(307));
+  avl = gpr_avl_add(avl, box(199), box(308));
+  avl = gpr_avl_add(avl, box(69), box(309));
+  avl = gpr_avl_add(avl, box(984), box(310));
+  avl = remove_int(avl, 568);
+  avl = remove_int(avl, 666);
+  avl = remove_int(avl, 37);
+  avl = gpr_avl_add(avl, box(845), box(314));
+  avl = remove_int(avl, 535);
+  avl = remove_int(avl, 365);
+  avl = remove_int(avl, 676);
+  avl = remove_int(avl, 892);
+  avl = remove_int(avl, 425);
+  avl = remove_int(avl, 704);
+  avl = remove_int(avl, 168);
+  avl = gpr_avl_add(avl, box(853), box(322));
+  avl = gpr_avl_add(avl, box(335), box(323));
+  avl = gpr_avl_add(avl, box(961), box(324));
+  avl = gpr_avl_add(avl, box(73), box(325));
+  avl = remove_int(avl, 469);
+  avl = gpr_avl_add(avl, box(449), box(327));
+  avl = remove_int(avl, 821);
+  avl = gpr_avl_add(avl, box(845), box(329));
+  avl = remove_int(avl, 637);
+  avl = gpr_avl_add(avl, box(769), box(331));
+  avl = gpr_avl_add(avl, box(901), box(332));
+  avl = remove_int(avl, 142);
+  avl = remove_int(avl, 361);
+  avl = remove_int(avl, 876);
+  avl = gpr_avl_add(avl, box(614), box(336));
+  avl = gpr_avl_add(avl, box(729), box(337));
+  avl = remove_int(avl, 120);
+  avl = remove_int(avl, 473);
+  avl = remove_int(avl, 445);
+  avl = gpr_avl_add(avl, box(978), box(341));
+  avl = gpr_avl_add(avl, box(164), box(342));
+  avl = gpr_avl_add(avl, box(1), box(343));
+  avl = remove_int(avl, 890);
+  avl = gpr_avl_add(avl, box(605), box(345));
+  avl = gpr_avl_add(avl, box(178), box(346));
+  avl = gpr_avl_add(avl, box(481), box(347));
+  avl = gpr_avl_add(avl, box(772), box(348));
+  avl = remove_int(avl, 824);
+  avl = remove_int(avl, 167);
+  avl = remove_int(avl, 151);
+  avl = gpr_avl_add(avl, box(698), box(352));
+  avl = gpr_avl_add(avl, box(202), box(353));
+  avl = gpr_avl_add(avl, box(921), box(354));
+  avl = gpr_avl_add(avl, box(875), box(355));
+  avl = remove_int(avl, 197);
+  avl = remove_int(avl, 232);
+  avl = gpr_avl_add(avl, box(209), box(358));
+  avl = remove_int(avl, 324);
+  avl = remove_int(avl, 56);
+  avl = remove_int(avl, 579);
+  avl = remove_int(avl, 255);
+  avl = remove_int(avl, 290);
+  avl = gpr_avl_add(avl, box(661), box(364));
+  avl = gpr_avl_add(avl, box(113), box(365));
+  avl = remove_int(avl, 767);
+  avl = gpr_avl_add(avl, box(586), box(367));
+  avl = gpr_avl_add(avl, box(121), box(368));
+  avl = remove_int(avl, 235);
+  avl = remove_int(avl, 439);
+  avl = remove_int(avl, 360);
+  avl = gpr_avl_add(avl, box(916), box(372));
+  avl = remove_int(avl, 999);
+  avl = gpr_avl_add(avl, box(825), box(374));
+  avl = gpr_avl_add(avl, box(177), box(375));
+  avl = remove_int(avl, 204);
+  avl = remove_int(avl, 92);
+  avl = gpr_avl_add(avl, box(794), box(378));
+  avl = gpr_avl_add(avl, box(463), box(379));
+  avl = gpr_avl_add(avl, box(472), box(380));
+  avl = remove_int(avl, 235);
+  avl = gpr_avl_add(avl, box(840), box(382));
+  avl = remove_int(avl, 657);
+  avl = gpr_avl_add(avl, box(586), box(384));
+  avl = gpr_avl_add(avl, box(979), box(385));
+  avl = remove_int(avl, 979);
+  avl = gpr_avl_add(avl, box(639), box(387));
+  avl = remove_int(avl, 907);
+  avl = remove_int(avl, 973);
+  avl = gpr_avl_add(avl, box(913), box(390));
+  avl = gpr_avl_add(avl, box(566), box(391));
+  avl = gpr_avl_add(avl, box(883), box(392));
+  avl = gpr_avl_add(avl, box(552), box(393));
+  avl = gpr_avl_add(avl, box(16), box(394));
+  avl = remove_int(avl, 60);
+  avl = gpr_avl_add(avl, box(567), box(396));
+  avl = gpr_avl_add(avl, box(705), box(397));
+  avl = gpr_avl_add(avl, box(94), box(398));
+  avl = remove_int(avl, 321);
+  avl = gpr_avl_add(avl, box(207), box(400));
+  avl = gpr_avl_add(avl, box(682), box(401));
+  avl = gpr_avl_add(avl, box(592), box(402));
+  avl = gpr_avl_add(avl, box(10), box(403));
+  avl = remove_int(avl, 911);
+  avl = remove_int(avl, 161);
+  avl = gpr_avl_add(avl, box(86), box(406));
+  avl = remove_int(avl, 893);
+  avl = remove_int(avl, 362);
+  avl = gpr_avl_add(avl, box(599), box(409));
+  avl = remove_int(avl, 413);
+  avl = gpr_avl_add(avl, box(867), box(411));
+  avl = remove_int(avl, 955);
+  avl = gpr_avl_add(avl, box(341), box(413));
+  avl = gpr_avl_add(avl, box(887), box(414));
+  avl = remove_int(avl, 706);
+  avl = gpr_avl_add(avl, box(939), box(416));
+  avl = remove_int(avl, 233);
+  avl = remove_int(avl, 662);
+  avl = remove_int(avl, 984);
+  avl = remove_int(avl, 203);
+  avl = gpr_avl_add(avl, box(326), box(421));
+  avl = remove_int(avl, 848);
+  avl = gpr_avl_add(avl, box(235), box(423));
+  avl = remove_int(avl, 617);
+  avl = gpr_avl_add(avl, box(565), box(425));
+  avl = remove_int(avl, 469);
+  avl = gpr_avl_add(avl, box(988), box(427));
+  avl = remove_int(avl, 957);
+  avl = gpr_avl_add(avl, box(426), box(429));
+  avl = remove_int(avl, 967);
+  avl = gpr_avl_add(avl, box(890), box(431));
+  avl = gpr_avl_add(avl, box(473), box(432));
+  avl = remove_int(avl, 367);
+  avl = remove_int(avl, 344);
+  avl = remove_int(avl, 660);
+  avl = remove_int(avl, 448);
+  avl = remove_int(avl, 837);
+  avl = remove_int(avl, 158);
+  avl = gpr_avl_add(avl, box(459), box(439));
+  avl = remove_int(avl, 882);
+  avl = remove_int(avl, 782);
+  avl = gpr_avl_add(avl, box(408), box(442));
+  avl = gpr_avl_add(avl, box(728), box(443));
+  avl = remove_int(avl, 27);
+  avl = gpr_avl_add(avl, box(137), box(445));
+  avl = gpr_avl_add(avl, box(239), box(446));
+  avl = remove_int(avl, 854);
+  avl = gpr_avl_add(avl, box(104), box(448));
+  avl = gpr_avl_add(avl, box(823), box(449));
+  avl = gpr_avl_add(avl, box(524), box(450));
+  avl = gpr_avl_add(avl, box(995), box(451));
+  avl = remove_int(avl, 422);
+  avl = remove_int(avl, 220);
+  avl = gpr_avl_add(avl, box(856), box(454));
+  avl = remove_int(avl, 332);
+  avl = gpr_avl_add(avl, box(679), box(456));
+  avl = remove_int(avl, 18);
+  avl = gpr_avl_add(avl, box(837), box(458));
+  avl = remove_int(avl, 405);
+  avl = remove_int(avl, 877);
+  avl = remove_int(avl, 835);
+  avl = gpr_avl_add(avl, box(547), box(462));
+  avl = remove_int(avl, 805);
+  avl = remove_int(avl, 862);
+  avl = gpr_avl_add(avl, box(75), box(465));
+  avl = remove_int(avl, 41);
+  avl = gpr_avl_add(avl, box(310), box(467));
+  avl = remove_int(avl, 855);
+  avl = gpr_avl_add(avl, box(20), box(469));
+  avl = remove_int(avl, 186);
+  avl = remove_int(avl, 378);
+  avl = remove_int(avl, 442);
+  avl = remove_int(avl, 930);
+  avl = gpr_avl_add(avl, box(118), box(474));
+  avl = gpr_avl_add(avl, box(96), box(475));
+  avl = remove_int(avl, 854);
+  avl = gpr_avl_add(avl, box(65), box(477));
+  avl = gpr_avl_add(avl, box(573), box(478));
+  avl = gpr_avl_add(avl, box(4), box(479));
+  avl = gpr_avl_add(avl, box(451), box(480));
+  avl = gpr_avl_add(avl, box(774), box(481));
+  avl = gpr_avl_add(avl, box(126), box(482));
+  avl = remove_int(avl, 956);
+  avl = remove_int(avl, 591);
+  avl = remove_int(avl, 644);
+  avl = gpr_avl_add(avl, box(304), box(486));
+  avl = remove_int(avl, 620);
+  avl = remove_int(avl, 394);
+  avl = gpr_avl_add(avl, box(1002), box(489));
+  avl = gpr_avl_add(avl, box(837), box(490));
+  avl = remove_int(avl, 485);
+  avl = gpr_avl_add(avl, box(1005), box(492));
+  avl = remove_int(avl, 21);
+  avl = gpr_avl_add(avl, box(396), box(494));
+  avl = remove_int(avl, 966);
+  avl = gpr_avl_add(avl, box(105), box(496));
+  avl = gpr_avl_add(avl, box(316), box(497));
+  avl = remove_int(avl, 776);
+  avl = gpr_avl_add(avl, box(188), box(499));
+  avl = remove_int(avl, 200);
+  avl = gpr_avl_add(avl, box(98), box(501));
+  avl = gpr_avl_add(avl, box(831), box(502));
+  avl = gpr_avl_add(avl, box(227), box(503));
+  avl = gpr_avl_add(avl, box(220), box(504));
+  avl = remove_int(avl, 715);
+  avl = remove_int(avl, 279);
+  avl = gpr_avl_add(avl, box(701), box(507));
+  avl = gpr_avl_add(avl, box(726), box(508));
+  avl = gpr_avl_add(avl, box(815), box(509));
+  avl = gpr_avl_add(avl, box(749), box(510));
+  avl = remove_int(avl, 946);
+  avl = remove_int(avl, 449);
+  avl = remove_int(avl, 62);
+  avl = remove_int(avl, 487);
+  avl = gpr_avl_add(avl, box(545), box(515));
+  avl = remove_int(avl, 59);
+  avl = gpr_avl_add(avl, box(168), box(517));
+  avl = remove_int(avl, 337);
+  avl = gpr_avl_add(avl, box(69), box(519));
+  avl = remove_int(avl, 600);
+  avl = gpr_avl_add(avl, box(591), box(521));
+  avl = gpr_avl_add(avl, box(960), box(522));
+  avl = gpr_avl_add(avl, box(116), box(523));
+  avl = remove_int(avl, 991);
+  avl = gpr_avl_add(avl, box(760), box(525));
+  avl = gpr_avl_add(avl, box(664), box(526));
+  avl = gpr_avl_add(avl, box(547), box(527));
+  avl = remove_int(avl, 922);
+  avl = gpr_avl_add(avl, box(290), box(529));
+  avl = gpr_avl_add(avl, box(859), box(530));
+  avl = gpr_avl_add(avl, box(49), box(531));
+  avl = remove_int(avl, 455);
+  avl = remove_int(avl, 786);
+  avl = gpr_avl_add(avl, box(613), box(534));
+  avl = gpr_avl_add(avl, box(326), box(535));
+  avl = remove_int(avl, 615);
+  avl = gpr_avl_add(avl, box(45), box(537));
+  avl = gpr_avl_add(avl, box(162), box(538));
+  avl = gpr_avl_add(avl, box(189), box(539));
+  avl = remove_int(avl, 68);
+  avl = remove_int(avl, 846);
+  avl = gpr_avl_add(avl, box(608), box(542));
+  avl = remove_int(avl, 821);
+  avl = gpr_avl_add(avl, box(978), box(544));
+  avl = gpr_avl_add(avl, box(892), box(545));
+  avl = remove_int(avl, 924);
+  avl = gpr_avl_add(avl, box(708), box(547));
+  avl = remove_int(avl, 135);
+  avl = remove_int(avl, 124);
+  avl = gpr_avl_add(avl, box(301), box(550));
+  avl = gpr_avl_add(avl, box(939), box(551));
+  avl = gpr_avl_add(avl, box(344), box(552));
+  avl = remove_int(avl, 443);
+  avl = remove_int(avl, 122);
+  avl = gpr_avl_add(avl, box(636), box(555));
+  avl = remove_int(avl, 558);
+  avl = gpr_avl_add(avl, box(923), box(557));
+  avl = remove_int(avl, 827);
+  avl = gpr_avl_add(avl, box(649), box(559));
+  avl = gpr_avl_add(avl, box(808), box(560));
+  avl = remove_int(avl, 570);
+  avl = remove_int(avl, 434);
+  avl = gpr_avl_add(avl, box(40), box(563));
+  avl = gpr_avl_add(avl, box(725), box(564));
+  avl = remove_int(avl, 295);
+  avl = remove_int(avl, 615);
+  avl = remove_int(avl, 919);
+  avl = remove_int(avl, 170);
+  avl = remove_int(avl, 442);
+  avl = remove_int(avl, 971);
+  avl = gpr_avl_add(avl, box(483), box(571));
+  avl = gpr_avl_add(avl, box(512), box(572));
+  avl = remove_int(avl, 648);
+  avl = remove_int(avl, 78);
+  avl = remove_int(avl, 72);
+  avl = remove_int(avl, 790);
+  avl = remove_int(avl, 571);
+  avl = gpr_avl_add(avl, box(898), box(578));
+  avl = remove_int(avl, 770);
+  avl = remove_int(avl, 776);
+  avl = gpr_avl_add(avl, box(602), box(581));
+  avl = remove_int(avl, 251);
+  avl = gpr_avl_add(avl, box(303), box(583));
+  avl = remove_int(avl, 837);
+  avl = gpr_avl_add(avl, box(714), box(585));
+  avl = remove_int(avl, 800);
+  avl = gpr_avl_add(avl, box(266), box(587));
+  avl = gpr_avl_add(avl, box(555), box(588));
+  avl = remove_int(avl, 604);
+  avl = remove_int(avl, 163);
+  avl = remove_int(avl, 497);
+  avl = gpr_avl_add(avl, box(296), box(592));
+  avl = remove_int(avl, 129);
+  avl = gpr_avl_add(avl, box(656), box(594));
+  avl = remove_int(avl, 769);
+  avl = remove_int(avl, 941);
+  avl = gpr_avl_add(avl, box(775), box(597));
+  avl = gpr_avl_add(avl, box(846), box(598));
+  avl = remove_int(avl, 591);
+  avl = remove_int(avl, 801);
+  avl = remove_int(avl, 419);
+  avl = remove_int(avl, 455);
+  avl = gpr_avl_add(avl, box(866), box(603));
+  avl = gpr_avl_add(avl, box(575), box(604));
+  avl = gpr_avl_add(avl, box(620), box(605));
+  avl = remove_int(avl, 100);
+  avl = remove_int(avl, 667);
+  avl = gpr_avl_add(avl, box(138), box(608));
+  avl = gpr_avl_add(avl, box(566), box(609));
+  avl = gpr_avl_add(avl, box(673), box(610));
+  avl = gpr_avl_add(avl, box(178), box(611));
+  avl = remove_int(avl, 659);
+  avl = gpr_avl_add(avl, box(759), box(613));
+  avl = gpr_avl_add(avl, box(1008), box(614));
+  avl = remove_int(avl, 116);
+  avl = gpr_avl_add(avl, box(608), box(616));
+  avl = gpr_avl_add(avl, box(339), box(617));
+  avl = gpr_avl_add(avl, box(197), box(618));
+  avl = remove_int(avl, 25);
+  avl = remove_int(avl, 628);
+  avl = gpr_avl_add(avl, box(487), box(621));
+  avl = remove_int(avl, 739);
+  avl = remove_int(avl, 100);
+  avl = remove_int(avl, 928);
+  avl = gpr_avl_add(avl, box(647), box(625));
+  avl = remove_int(avl, 978);
+  avl = remove_int(avl, 143);
+  avl = remove_int(avl, 755);
+  avl = gpr_avl_add(avl, box(71), box(629));
+  avl = remove_int(avl, 205);
+  avl = gpr_avl_add(avl, box(501), box(631));
+  avl = remove_int(avl, 723);
+  avl = remove_int(avl, 852);
+  avl = remove_int(avl, 1021);
+  avl = remove_int(avl, 670);
+  avl = remove_int(avl, 500);
+  avl = gpr_avl_add(avl, box(330), box(637));
+  avl = remove_int(avl, 264);
+  avl = gpr_avl_add(avl, box(69), box(639));
+  avl = remove_int(avl, 73);
+  avl = gpr_avl_add(avl, box(745), box(641));
+  avl = remove_int(avl, 518);
+  avl = remove_int(avl, 641);
+  avl = remove_int(avl, 768);
+  avl = gpr_avl_add(avl, box(988), box(645));
+  avl = gpr_avl_add(avl, box(899), box(646));
+  avl = remove_int(avl, 763);
+  avl = remove_int(avl, 281);
+  avl = remove_int(avl, 496);
+  avl = gpr_avl_add(avl, box(445), box(650));
+  avl = remove_int(avl, 905);
+  avl = gpr_avl_add(avl, box(275), box(652));
+  avl = gpr_avl_add(avl, box(137), box(653));
+  avl = remove_int(avl, 642);
+  avl = gpr_avl_add(avl, box(708), box(655));
+  avl = remove_int(avl, 922);
+  avl = gpr_avl_add(avl, box(743), box(657));
+  avl = remove_int(avl, 295);
+  avl = remove_int(avl, 665);
+  avl = remove_int(avl, 48);
+  avl = gpr_avl_add(avl, box(1012), box(661));
+  avl = remove_int(avl, 71);
+  avl = remove_int(avl, 523);
+  avl = gpr_avl_add(avl, box(319), box(664));
+  avl = remove_int(avl, 632);
+  avl = gpr_avl_add(avl, box(137), box(666));
+  avl = gpr_avl_add(avl, box(686), box(667));
+  avl = gpr_avl_add(avl, box(724), box(668));
+  avl = gpr_avl_add(avl, box(952), box(669));
+  avl = gpr_avl_add(avl, box(5), box(670));
+  avl = remove_int(avl, 35);
+  avl = gpr_avl_add(avl, box(43), box(672));
+  avl = gpr_avl_add(avl, box(320), box(673));
+  avl = gpr_avl_add(avl, box(115), box(674));
+  avl = remove_int(avl, 377);
+  avl = remove_int(avl, 591);
+  avl = remove_int(avl, 87);
+  avl = remove_int(avl, 93);
+  avl = gpr_avl_add(avl, box(1016), box(679));
+  avl = gpr_avl_add(avl, box(605), box(680));
+  avl = gpr_avl_add(avl, box(152), box(681));
+  avl = gpr_avl_add(avl, box(113), box(682));
+  avl = remove_int(avl, 131);
+  avl = remove_int(avl, 637);
+  avl = gpr_avl_add(avl, box(156), box(685));
+  avl = remove_int(avl, 696);
+  avl = gpr_avl_add(avl, box(546), box(687));
+  avl = remove_int(avl, 970);
+  avl = remove_int(avl, 53);
+  avl = remove_int(avl, 827);
+  avl = remove_int(avl, 224);
+  avl = remove_int(avl, 796);
+  avl = remove_int(avl, 34);
+  avl = remove_int(avl, 922);
+  avl = remove_int(avl, 277);
+  avl = remove_int(avl, 650);
+  avl = remove_int(avl, 222);
+  avl = remove_int(avl, 244);
+  avl = remove_int(avl, 576);
+  avl = remove_int(avl, 413);
+  avl = gpr_avl_add(avl, box(500), box(701));
+  avl = remove_int(avl, 924);
+  avl = gpr_avl_add(avl, box(825), box(703));
+  avl = remove_int(avl, 888);
+  avl = remove_int(avl, 931);
+  avl = gpr_avl_add(avl, box(285), box(706));
+  avl = remove_int(avl, 62);
+  avl = remove_int(avl, 444);
+  avl = remove_int(avl, 946);
+  avl = gpr_avl_add(avl, box(122), box(710));
+  avl = gpr_avl_add(avl, box(846), box(711));
+  avl = remove_int(avl, 628);
+  avl = gpr_avl_add(avl, box(511), box(713));
+  avl = gpr_avl_add(avl, box(398), box(714));
+  avl = remove_int(avl, 730);
+  avl = gpr_avl_add(avl, box(797), box(716));
+  avl = remove_int(avl, 897);
+  avl = remove_int(avl, 228);
+  avl = remove_int(avl, 544);
+  avl = remove_int(avl, 552);
+  avl = remove_int(avl, 783);
+  avl = remove_int(avl, 583);
+  avl = remove_int(avl, 894);
+  avl = remove_int(avl, 942);
+  avl = gpr_avl_add(avl, box(346), box(725));
+  avl = gpr_avl_add(avl, box(1015), box(726));
+  avl = remove_int(avl, 813);
+  avl = gpr_avl_add(avl, box(213), box(728));
+  avl = remove_int(avl, 468);
+  avl = remove_int(avl, 365);
+  avl = remove_int(avl, 399);
+  avl = gpr_avl_add(avl, box(380), box(732));
+  avl = remove_int(avl, 835);
+  avl = remove_int(avl, 970);
+  avl = gpr_avl_add(avl, box(700), box(735));
+  avl = gpr_avl_add(avl, box(807), box(736));
+  avl = remove_int(avl, 312);
+  avl = remove_int(avl, 282);
+  avl = remove_int(avl, 370);
+  avl = remove_int(avl, 999);
+  avl = remove_int(avl, 241);
+  avl = remove_int(avl, 884);
+  avl = gpr_avl_add(avl, box(587), box(743));
+  avl = gpr_avl_add(avl, box(332), box(744));
+  avl = remove_int(avl, 686);
+  avl = remove_int(avl, 206);
+  avl = remove_int(avl, 835);
+  avl = gpr_avl_add(avl, box(334), box(748));
+  avl = remove_int(avl, 171);
+  avl = gpr_avl_add(avl, box(1002), box(750));
+  avl = gpr_avl_add(avl, box(779), box(751));
+  avl = gpr_avl_add(avl, box(307), box(752));
+  avl = gpr_avl_add(avl, box(127), box(753));
+  avl = gpr_avl_add(avl, box(251), box(754));
+  avl = remove_int(avl, 790);
+  avl = remove_int(avl, 189);
+  avl = remove_int(avl, 193);
+  avl = remove_int(avl, 38);
+  avl = remove_int(avl, 124);
+  avl = gpr_avl_add(avl, box(812), box(760));
+  avl = remove_int(avl, 43);
+  avl = gpr_avl_add(avl, box(871), box(762));
+  avl = gpr_avl_add(avl, box(580), box(763));
+  avl = remove_int(avl, 501);
+  avl = remove_int(avl, 462);
+  avl = remove_int(avl, 599);
+  avl = gpr_avl_add(avl, box(240), box(767));
+  avl = gpr_avl_add(avl, box(285), box(768));
+  avl = gpr_avl_add(avl, box(472), box(769));
+  avl = remove_int(avl, 865);
+  avl = remove_int(avl, 763);
+  avl = remove_int(avl, 245);
+  avl = remove_int(avl, 80);
+  avl = remove_int(avl, 713);
+  avl = remove_int(avl, 654);
+  avl = remove_int(avl, 1014);
+  avl = gpr_avl_add(avl, box(495), box(777));
+  avl = gpr_avl_add(avl, box(552), box(778));
+  avl = remove_int(avl, 19);
+  avl = remove_int(avl, 803);
+  avl = gpr_avl_add(avl, box(508), box(781));
+  avl = remove_int(avl, 699);
+  avl = remove_int(avl, 260);
+  avl = remove_int(avl, 92);
+  avl = remove_int(avl, 497);
+  avl = gpr_avl_add(avl, box(970), box(786));
+  avl = remove_int(avl, 987);
+  avl = remove_int(avl, 168);
+  avl = remove_int(avl, 476);
+  avl = remove_int(avl, 248);
+  avl = gpr_avl_add(avl, box(358), box(791));
+  avl = remove_int(avl, 804);
+  avl = remove_int(avl, 77);
+  avl = remove_int(avl, 905);
+  avl = remove_int(avl, 362);
+  avl = gpr_avl_add(avl, box(578), box(796));
+  avl = remove_int(avl, 38);
+  avl = remove_int(avl, 595);
+  avl = gpr_avl_add(avl, box(213), box(799));
+  avl = remove_int(avl, 7);
+  avl = remove_int(avl, 620);
+  avl = gpr_avl_add(avl, box(946), box(802));
+  avl = remove_int(avl, 145);
+  avl = gpr_avl_add(avl, box(628), box(804));
+  avl = remove_int(avl, 972);
+  avl = gpr_avl_add(avl, box(728), box(806));
+  avl = remove_int(avl, 91);
+  avl = gpr_avl_add(avl, box(136), box(808));
+  avl = gpr_avl_add(avl, box(841), box(809));
+  avl = gpr_avl_add(avl, box(265), box(810));
+  avl = gpr_avl_add(avl, box(701), box(811));
+  avl = gpr_avl_add(avl, box(27), box(812));
+  avl = remove_int(avl, 72);
+  avl = remove_int(avl, 14);
+  avl = gpr_avl_add(avl, box(286), box(815));
+  avl = remove_int(avl, 996);
+  avl = remove_int(avl, 998);
+  avl = gpr_avl_add(avl, box(466), box(818));
+  avl = remove_int(avl, 1009);
+  avl = remove_int(avl, 741);
+  avl = remove_int(avl, 947);
+  avl = remove_int(avl, 241);
+  avl = remove_int(avl, 954);
+  avl = remove_int(avl, 183);
+  avl = remove_int(avl, 395);
+  avl = remove_int(avl, 951);
+  avl = gpr_avl_add(avl, box(267), box(827));
+  avl = remove_int(avl, 812);
+  avl = gpr_avl_add(avl, box(577), box(829));
+  avl = remove_int(avl, 624);
+  avl = remove_int(avl, 847);
+  avl = remove_int(avl, 745);
+  avl = gpr_avl_add(avl, box(491), box(833));
+  avl = gpr_avl_add(avl, box(941), box(834));
+  avl = remove_int(avl, 258);
+  avl = gpr_avl_add(avl, box(410), box(836));
+  avl = gpr_avl_add(avl, box(80), box(837));
+  avl = gpr_avl_add(avl, box(196), box(838));
+  avl = gpr_avl_add(avl, box(5), box(839));
+  avl = remove_int(avl, 782);
+  avl = gpr_avl_add(avl, box(827), box(841));
+  avl = remove_int(avl, 472);
+  avl = remove_int(avl, 664);
+  avl = gpr_avl_add(avl, box(409), box(844));
+  avl = gpr_avl_add(avl, box(62), box(845));
+  avl = remove_int(avl, 56);
+  avl = remove_int(avl, 606);
+  avl = remove_int(avl, 707);
+  avl = remove_int(avl, 989);
+  avl = remove_int(avl, 549);
+  avl = remove_int(avl, 259);
+  avl = gpr_avl_add(avl, box(405), box(852));
+  avl = remove_int(avl, 587);
+  avl = remove_int(avl, 350);
+  avl = gpr_avl_add(avl, box(980), box(855));
+  avl = gpr_avl_add(avl, box(992), box(856));
+  avl = gpr_avl_add(avl, box(818), box(857));
+  avl = remove_int(avl, 853);
+  avl = remove_int(avl, 701);
+  avl = gpr_avl_add(avl, box(675), box(860));
+  avl = remove_int(avl, 248);
+  avl = remove_int(avl, 649);
+  avl = gpr_avl_add(avl, box(508), box(863));
+  avl = remove_int(avl, 927);
+  avl = gpr_avl_add(avl, box(957), box(865));
+  avl = gpr_avl_add(avl, box(698), box(866));
+  avl = gpr_avl_add(avl, box(388), box(867));
+  avl = gpr_avl_add(avl, box(532), box(868));
+  avl = gpr_avl_add(avl, box(681), box(869));
+  avl = remove_int(avl, 544);
+  avl = remove_int(avl, 991);
+  avl = remove_int(avl, 397);
+  avl = gpr_avl_add(avl, box(954), box(873));
+  avl = gpr_avl_add(avl, box(219), box(874));
+  avl = gpr_avl_add(avl, box(465), box(875));
+  avl = remove_int(avl, 371);
+  avl = gpr_avl_add(avl, box(601), box(877));
+  avl = gpr_avl_add(avl, box(543), box(878));
+  avl = remove_int(avl, 329);
+  avl = gpr_avl_add(avl, box(560), box(880));
+  avl = remove_int(avl, 898);
+  avl = gpr_avl_add(avl, box(455), box(882));
+  avl = remove_int(avl, 313);
+  avl = gpr_avl_add(avl, box(215), box(884));
+  avl = remove_int(avl, 846);
+  avl = gpr_avl_add(avl, box(608), box(886));
+  avl = remove_int(avl, 248);
+  avl = gpr_avl_add(avl, box(575), box(888));
+  avl = remove_int(avl, 207);
+  avl = remove_int(avl, 810);
+  avl = remove_int(avl, 665);
+  avl = remove_int(avl, 361);
+  avl = gpr_avl_add(avl, box(154), box(893));
+  avl = gpr_avl_add(avl, box(329), box(894));
+  avl = gpr_avl_add(avl, box(326), box(895));
+  avl = remove_int(avl, 746);
+  avl = remove_int(avl, 99);
+  avl = gpr_avl_add(avl, box(464), box(898));
+  avl = gpr_avl_add(avl, box(141), box(899));
+  avl = remove_int(avl, 383);
+  avl = gpr_avl_add(avl, box(414), box(901));
+  avl = gpr_avl_add(avl, box(777), box(902));
+  avl = remove_int(avl, 972);
+  avl = remove_int(avl, 841);
+  avl = remove_int(avl, 100);
+  avl = gpr_avl_add(avl, box(828), box(906));
+  avl = remove_int(avl, 785);
+  avl = gpr_avl_add(avl, box(1008), box(908));
+  avl = gpr_avl_add(avl, box(46), box(909));
+  avl = remove_int(avl, 399);
+  avl = gpr_avl_add(avl, box(178), box(911));
+  avl = gpr_avl_add(avl, box(573), box(912));
+  avl = remove_int(avl, 299);
+  avl = gpr_avl_add(avl, box(690), box(914));
+  avl = gpr_avl_add(avl, box(692), box(915));
+  avl = remove_int(avl, 404);
+  avl = remove_int(avl, 16);
+  avl = remove_int(avl, 746);
+  avl = remove_int(avl, 486);
+  avl = remove_int(avl, 119);
+  avl = gpr_avl_add(avl, box(167), box(921));
+  avl = remove_int(avl, 328);
+  avl = gpr_avl_add(avl, box(89), box(923));
+  avl = remove_int(avl, 867);
+  avl = remove_int(avl, 626);
+  avl = remove_int(avl, 507);
+  avl = gpr_avl_add(avl, box(365), box(927));
+  avl = gpr_avl_add(avl, box(58), box(928));
+  avl = gpr_avl_add(avl, box(70), box(929));
+  avl = remove_int(avl, 81);
+  avl = remove_int(avl, 797);
+  avl = gpr_avl_add(avl, box(846), box(932));
+  avl = remove_int(avl, 642);
+  avl = gpr_avl_add(avl, box(777), box(934));
+  avl = remove_int(avl, 107);
+  avl = gpr_avl_add(avl, box(691), box(936));
+  avl = gpr_avl_add(avl, box(820), box(937));
+  avl = gpr_avl_add(avl, box(202), box(938));
+  avl = gpr_avl_add(avl, box(308), box(939));
+  avl = gpr_avl_add(avl, box(20), box(940));
+  avl = remove_int(avl, 289);
+  avl = gpr_avl_add(avl, box(714), box(942));
+  avl = gpr_avl_add(avl, box(584), box(943));
+  avl = remove_int(avl, 294);
+  avl = gpr_avl_add(avl, box(496), box(945));
+  avl = gpr_avl_add(avl, box(394), box(946));
+  avl = gpr_avl_add(avl, box(860), box(947));
+  avl = gpr_avl_add(avl, box(58), box(948));
+  avl = remove_int(avl, 784);
+  avl = remove_int(avl, 584);
+  avl = remove_int(avl, 708);
+  avl = gpr_avl_add(avl, box(142), box(952));
+  avl = gpr_avl_add(avl, box(247), box(953));
+  avl = gpr_avl_add(avl, box(389), box(954));
+  avl = remove_int(avl, 390);
+  avl = gpr_avl_add(avl, box(465), box(956));
+  avl = gpr_avl_add(avl, box(936), box(957));
+  avl = gpr_avl_add(avl, box(309), box(958));
+  avl = remove_int(avl, 928);
+  avl = remove_int(avl, 128);
+  avl = remove_int(avl, 979);
+  avl = remove_int(avl, 670);
+  avl = remove_int(avl, 738);
+  avl = remove_int(avl, 271);
+  avl = remove_int(avl, 540);
+  avl = gpr_avl_add(avl, box(365), box(966));
+  avl = remove_int(avl, 82);
+  avl = gpr_avl_add(avl, box(728), box(968));
+  avl = remove_int(avl, 852);
+  avl = gpr_avl_add(avl, box(884), box(970));
+  avl = gpr_avl_add(avl, box(502), box(971));
+  avl = remove_int(avl, 898);
+  avl = remove_int(avl, 481);
+  avl = gpr_avl_add(avl, box(911), box(974));
+  avl = remove_int(avl, 787);
+  avl = remove_int(avl, 785);
+  avl = remove_int(avl, 537);
+  avl = remove_int(avl, 535);
+  avl = remove_int(avl, 136);
+  avl = remove_int(avl, 749);
+  avl = remove_int(avl, 637);
+  avl = remove_int(avl, 900);
+  avl = gpr_avl_add(avl, box(598), box(983));
+  avl = remove_int(avl, 25);
+  avl = remove_int(avl, 697);
+  avl = gpr_avl_add(avl, box(645), box(986));
+  avl = gpr_avl_add(avl, box(211), box(987));
+  avl = gpr_avl_add(avl, box(589), box(988));
+  avl = remove_int(avl, 702);
+  avl = gpr_avl_add(avl, box(53), box(990));
+  avl = remove_int(avl, 492);
+  avl = remove_int(avl, 185);
+  avl = remove_int(avl, 246);
+  avl = remove_int(avl, 257);
+  avl = remove_int(avl, 502);
+  avl = remove_int(avl, 34);
+  avl = gpr_avl_add(avl, box(74), box(997));
+  avl = gpr_avl_add(avl, box(834), box(998));
+  avl = gpr_avl_add(avl, box(514), box(999));
+  avl = gpr_avl_add(avl, box(75), box(1000));
+  avl = remove_int(avl, 745);
+  avl = gpr_avl_add(avl, box(362), box(1002));
+  avl = remove_int(avl, 215);
+  avl = gpr_avl_add(avl, box(624), box(1004));
+  avl = remove_int(avl, 404);
+  avl = remove_int(avl, 359);
+  avl = remove_int(avl, 491);
+  avl = gpr_avl_add(avl, box(903), box(1008));
+  avl = gpr_avl_add(avl, box(240), box(1009));
+  avl = remove_int(avl, 95);
+  avl = gpr_avl_add(avl, box(119), box(1011));
+  avl = gpr_avl_add(avl, box(857), box(1012));
+  avl = remove_int(avl, 39);
+  avl = remove_int(avl, 866);
+  avl = gpr_avl_add(avl, box(503), box(1015));
+  avl = gpr_avl_add(avl, box(740), box(1016));
+  avl = remove_int(avl, 637);
+  avl = remove_int(avl, 156);
+  avl = remove_int(avl, 6);
+  avl = remove_int(avl, 745);
+  avl = remove_int(avl, 433);
+  avl = remove_int(avl, 283);
+  avl = gpr_avl_add(avl, box(625), box(1023));
+  avl = remove_int(avl, 638);
+  avl = gpr_avl_add(avl, box(299), box(1025));
+  avl = gpr_avl_add(avl, box(584), box(1026));
+  avl = remove_int(avl, 863);
+  avl = gpr_avl_add(avl, box(612), box(1028));
+  avl = gpr_avl_add(avl, box(62), box(1029));
+  avl = gpr_avl_add(avl, box(432), box(1030));
+  avl = remove_int(avl, 371);
+  avl = remove_int(avl, 790);
+  avl = remove_int(avl, 227);
+  avl = remove_int(avl, 836);
+  avl = gpr_avl_add(avl, box(703), box(1035));
+  avl = gpr_avl_add(avl, box(644), box(1036));
+  avl = remove_int(avl, 638);
+  avl = gpr_avl_add(avl, box(13), box(1038));
+  avl = remove_int(avl, 66);
+  avl = remove_int(avl, 82);
+  avl = gpr_avl_add(avl, box(362), box(1041));
+  avl = gpr_avl_add(avl, box(783), box(1042));
+  avl = remove_int(avl, 60);
+  avl = gpr_avl_add(avl, box(80), box(1044));
+  avl = gpr_avl_add(avl, box(825), box(1045));
+  avl = gpr_avl_add(avl, box(688), box(1046));
+  avl = gpr_avl_add(avl, box(662), box(1047));
+  avl = remove_int(avl, 156);
+  avl = remove_int(avl, 376);
+  avl = remove_int(avl, 99);
+  avl = gpr_avl_add(avl, box(526), box(1051));
+  avl = gpr_avl_add(avl, box(168), box(1052));
+  avl = remove_int(avl, 646);
+  avl = remove_int(avl, 380);
+  avl = remove_int(avl, 833);
+  avl = gpr_avl_add(avl, box(53), box(1056));
+  avl = remove_int(avl, 105);
+  avl = gpr_avl_add(avl, box(373), box(1058));
+  avl = gpr_avl_add(avl, box(184), box(1059));
+  avl = remove_int(avl, 288);
+  avl = gpr_avl_add(avl, box(966), box(1061));
+  avl = remove_int(avl, 158);
+  avl = gpr_avl_add(avl, box(406), box(1063));
+  avl = remove_int(avl, 470);
+  avl = gpr_avl_add(avl, box(283), box(1065));
+  avl = gpr_avl_add(avl, box(838), box(1066));
+  avl = gpr_avl_add(avl, box(288), box(1067));
+  avl = gpr_avl_add(avl, box(950), box(1068));
+  avl = gpr_avl_add(avl, box(163), box(1069));
+  avl = remove_int(avl, 623);
+  avl = remove_int(avl, 769);
+  avl = gpr_avl_add(avl, box(144), box(1072));
+  avl = gpr_avl_add(avl, box(489), box(1073));
+  avl = remove_int(avl, 15);
+  avl = gpr_avl_add(avl, box(971), box(1075));
+  avl = remove_int(avl, 660);
+  avl = gpr_avl_add(avl, box(255), box(1077));
+  avl = remove_int(avl, 494);
+  avl = gpr_avl_add(avl, box(109), box(1079));
+  avl = gpr_avl_add(avl, box(420), box(1080));
+  avl = gpr_avl_add(avl, box(509), box(1081));
+  avl = remove_int(avl, 178);
+  avl = gpr_avl_add(avl, box(216), box(1083));
+  avl = gpr_avl_add(avl, box(707), box(1084));
+  avl = gpr_avl_add(avl, box(411), box(1085));
+  avl = gpr_avl_add(avl, box(352), box(1086));
+  avl = remove_int(avl, 983);
+  avl = gpr_avl_add(avl, box(6), box(1088));
+  avl = gpr_avl_add(avl, box(1014), box(1089));
+  avl = remove_int(avl, 98);
+  avl = remove_int(avl, 325);
+  avl = gpr_avl_add(avl, box(851), box(1092));
+  avl = remove_int(avl, 553);
+  avl = gpr_avl_add(avl, box(218), box(1094));
+  avl = gpr_avl_add(avl, box(261), box(1095));
+  avl = remove_int(avl, 31);
+  avl = gpr_avl_add(avl, box(872), box(1097));
+  avl = remove_int(avl, 543);
+  avl = remove_int(avl, 314);
+  avl = remove_int(avl, 443);
+  avl = gpr_avl_add(avl, box(533), box(1101));
+  avl = remove_int(avl, 881);
+  avl = remove_int(avl, 269);
+  avl = remove_int(avl, 940);
+  avl = remove_int(avl, 909);
+  avl = remove_int(avl, 197);
+  avl = remove_int(avl, 773);
+  avl = remove_int(avl, 790);
+  avl = remove_int(avl, 345);
+  avl = gpr_avl_add(avl, box(965), box(1110));
+  avl = remove_int(avl, 622);
+  avl = gpr_avl_add(avl, box(352), box(1112));
+  avl = remove_int(avl, 182);
+  avl = gpr_avl_add(avl, box(534), box(1114));
+  avl = gpr_avl_add(avl, box(97), box(1115));
+  avl = gpr_avl_add(avl, box(198), box(1116));
+  avl = remove_int(avl, 750);
+  avl = gpr_avl_add(avl, box(98), box(1118));
+  avl = remove_int(avl, 943);
+  avl = gpr_avl_add(avl, box(254), box(1120));
+  avl = gpr_avl_add(avl, box(30), box(1121));
+  avl = remove_int(avl, 14);
+  avl = remove_int(avl, 475);
+  avl = remove_int(avl, 82);
+  avl = gpr_avl_add(avl, box(789), box(1125));
+  avl = gpr_avl_add(avl, box(402), box(1126));
+  avl = remove_int(avl, 1019);
+  avl = gpr_avl_add(avl, box(858), box(1128));
+  avl = gpr_avl_add(avl, box(625), box(1129));
+  avl = remove_int(avl, 675);
+  avl = remove_int(avl, 323);
+  avl = gpr_avl_add(avl, box(329), box(1132));
+  avl = remove_int(avl, 929);
+  avl = remove_int(avl, 44);
+  avl = gpr_avl_add(avl, box(443), box(1135));
+  avl = gpr_avl_add(avl, box(653), box(1136));
+  avl = gpr_avl_add(avl, box(750), box(1137));
+  avl = gpr_avl_add(avl, box(252), box(1138));
+  avl = gpr_avl_add(avl, box(449), box(1139));
+  avl = remove_int(avl, 1022);
+  avl = remove_int(avl, 357);
+  avl = remove_int(avl, 602);
+  avl = remove_int(avl, 131);
+  avl = gpr_avl_add(avl, box(531), box(1144));
+  avl = remove_int(avl, 806);
+  avl = gpr_avl_add(avl, box(455), box(1146));
+  avl = remove_int(avl, 31);
+  avl = gpr_avl_add(avl, box(154), box(1148));
+  avl = gpr_avl_add(avl, box(189), box(1149));
+  avl = remove_int(avl, 786);
+  avl = gpr_avl_add(avl, box(496), box(1151));
+  avl = gpr_avl_add(avl, box(81), box(1152));
+  avl = gpr_avl_add(avl, box(59), box(1153));
+  avl = remove_int(avl, 424);
+  avl = remove_int(avl, 668);
+  avl = gpr_avl_add(avl, box(723), box(1156));
+  avl = gpr_avl_add(avl, box(822), box(1157));
+  avl = gpr_avl_add(avl, box(354), box(1158));
+  avl = remove_int(avl, 738);
+  avl = gpr_avl_add(avl, box(686), box(1160));
+  avl = gpr_avl_add(avl, box(43), box(1161));
+  avl = gpr_avl_add(avl, box(625), box(1162));
+  avl = gpr_avl_add(avl, box(902), box(1163));
+  avl = gpr_avl_add(avl, box(12), box(1164));
+  avl = gpr_avl_add(avl, box(977), box(1165));
+  avl = gpr_avl_add(avl, box(699), box(1166));
+  avl = gpr_avl_add(avl, box(189), box(1167));
+  avl = remove_int(avl, 672);
+  avl = remove_int(avl, 90);
+  avl = remove_int(avl, 757);
+  avl = remove_int(avl, 494);
+  avl = gpr_avl_add(avl, box(759), box(1172));
+  avl = remove_int(avl, 758);
+  avl = remove_int(avl, 222);
+  avl = gpr_avl_add(avl, box(975), box(1175));
+  avl = remove_int(avl, 993);
+  avl = gpr_avl_add(avl, box(2), box(1177));
+  avl = gpr_avl_add(avl, box(70), box(1178));
+  avl = remove_int(avl, 350);
+  avl = remove_int(avl, 972);
+  avl = remove_int(avl, 880);
+  avl = gpr_avl_add(avl, box(753), box(1182));
+  avl = remove_int(avl, 404);
+  avl = gpr_avl_add(avl, box(294), box(1184));
+  avl = remove_int(avl, 474);
+  avl = gpr_avl_add(avl, box(228), box(1186));
+  avl = gpr_avl_add(avl, box(484), box(1187));
+  avl = remove_int(avl, 238);
+  avl = remove_int(avl, 53);
+  avl = remove_int(avl, 691);
+  avl = gpr_avl_add(avl, box(345), box(1191));
+  avl = remove_int(avl, 0);
+  avl = gpr_avl_add(avl, box(230), box(1193));
+  avl = remove_int(avl, 227);
+  avl = remove_int(avl, 152);
+  avl = gpr_avl_add(avl, box(884), box(1196));
+  avl = remove_int(avl, 823);
+  avl = remove_int(avl, 53);
+  avl = gpr_avl_add(avl, box(1015), box(1199));
+  avl = gpr_avl_add(avl, box(697), box(1200));
+  avl = gpr_avl_add(avl, box(376), box(1201));
+  avl = remove_int(avl, 411);
+  avl = gpr_avl_add(avl, box(888), box(1203));
+  avl = remove_int(avl, 55);
+  avl = gpr_avl_add(avl, box(85), box(1205));
+  avl = remove_int(avl, 947);
+  avl = remove_int(avl, 382);
+  avl = remove_int(avl, 777);
+  avl = gpr_avl_add(avl, box(1017), box(1209));
+  avl = gpr_avl_add(avl, box(169), box(1210));
+  avl = gpr_avl_add(avl, box(156), box(1211));
+  avl = remove_int(avl, 153);
+  avl = remove_int(avl, 642);
+  avl = remove_int(avl, 158);
+  avl = gpr_avl_add(avl, box(554), box(1215));
+  avl = gpr_avl_add(avl, box(76), box(1216));
+  avl = gpr_avl_add(avl, box(756), box(1217));
+  avl = remove_int(avl, 767);
+  avl = remove_int(avl, 112);
+  avl = remove_int(avl, 539);
+  avl = remove_int(avl, 544);
+  avl = remove_int(avl, 628);
+  avl = remove_int(avl, 385);
+  avl = remove_int(avl, 514);
+  avl = remove_int(avl, 362);
+  avl = gpr_avl_add(avl, box(523), box(1226));
+  avl = gpr_avl_add(avl, box(712), box(1227));
+  avl = gpr_avl_add(avl, box(474), box(1228));
+  avl = gpr_avl_add(avl, box(882), box(1229));
+  avl = gpr_avl_add(avl, box(965), box(1230));
+  avl = remove_int(avl, 464);
+  avl = gpr_avl_add(avl, box(319), box(1232));
+  avl = gpr_avl_add(avl, box(504), box(1233));
+  avl = remove_int(avl, 818);
+  avl = gpr_avl_add(avl, box(884), box(1235));
+  avl = gpr_avl_add(avl, box(813), box(1236));
+  avl = gpr_avl_add(avl, box(795), box(1237));
+  avl = remove_int(avl, 306);
+  avl = gpr_avl_add(avl, box(799), box(1239));
+  avl = remove_int(avl, 534);
+  avl = gpr_avl_add(avl, box(480), box(1241));
+  avl = gpr_avl_add(avl, box(656), box(1242));
+  avl = gpr_avl_add(avl, box(709), box(1243));
+  avl = gpr_avl_add(avl, box(500), box(1244));
+  avl = remove_int(avl, 740);
+  avl = gpr_avl_add(avl, box(980), box(1246));
+  avl = gpr_avl_add(avl, box(458), box(1247));
+  avl = remove_int(avl, 377);
+  avl = remove_int(avl, 338);
+  avl = gpr_avl_add(avl, box(554), box(1250));
+  avl = gpr_avl_add(avl, box(504), box(1251));
+  avl = gpr_avl_add(avl, box(603), box(1252));
+  avl = gpr_avl_add(avl, box(761), box(1253));
+  avl = remove_int(avl, 431);
+  avl = gpr_avl_add(avl, box(707), box(1255));
+  avl = gpr_avl_add(avl, box(673), box(1256));
+  avl = remove_int(avl, 998);
+  avl = remove_int(avl, 332);
+  avl = remove_int(avl, 413);
+  avl = remove_int(avl, 227);
+  avl = remove_int(avl, 249);
+  avl = remove_int(avl, 309);
+  avl = remove_int(avl, 459);
+  avl = gpr_avl_add(avl, box(645), box(1264));
+  avl = remove_int(avl, 858);
+  avl = remove_int(avl, 997);
+  avl = gpr_avl_add(avl, box(519), box(1267));
+  avl = remove_int(avl, 614);
+  avl = remove_int(avl, 462);
+  avl = remove_int(avl, 792);
+  avl = gpr_avl_add(avl, box(987), box(1271));
+  avl = gpr_avl_add(avl, box(309), box(1272));
+  avl = remove_int(avl, 747);
+  avl = gpr_avl_add(avl, box(621), box(1274));
+  avl = gpr_avl_add(avl, box(450), box(1275));
+  avl = remove_int(avl, 265);
+  avl = remove_int(avl, 8);
+  avl = remove_int(avl, 383);
+  avl = gpr_avl_add(avl, box(238), box(1279));
+  avl = remove_int(avl, 241);
+  avl = gpr_avl_add(avl, box(180), box(1281));
+  avl = gpr_avl_add(avl, box(411), box(1282));
+  avl = gpr_avl_add(avl, box(791), box(1283));
+  avl = gpr_avl_add(avl, box(955), box(1284));
+  avl = remove_int(avl, 24);
+  avl = remove_int(avl, 375);
+  avl = gpr_avl_add(avl, box(140), box(1287));
+  avl = remove_int(avl, 949);
+  avl = gpr_avl_add(avl, box(301), box(1289));
+  avl = gpr_avl_add(avl, box(0), box(1290));
+  avl = remove_int(avl, 371);
+  avl = remove_int(avl, 427);
+  avl = remove_int(avl, 841);
+  avl = remove_int(avl, 847);
+  avl = gpr_avl_add(avl, box(814), box(1295));
+  avl = gpr_avl_add(avl, box(127), box(1296));
+  avl = gpr_avl_add(avl, box(279), box(1297));
+  avl = remove_int(avl, 669);
+  avl = remove_int(avl, 541);
+  avl = remove_int(avl, 275);
+  avl = remove_int(avl, 299);
+  avl = remove_int(avl, 552);
+  avl = gpr_avl_add(avl, box(310), box(1303));
+  avl = gpr_avl_add(avl, box(304), box(1304));
+  avl = gpr_avl_add(avl, box(1), box(1305));
+  avl = gpr_avl_add(avl, box(339), box(1306));
+  avl = remove_int(avl, 570);
+  avl = remove_int(avl, 752);
+  avl = remove_int(avl, 552);
+  avl = remove_int(avl, 442);
+  avl = remove_int(avl, 639);
+  avl = gpr_avl_add(avl, box(313), box(1312));
+  avl = remove_int(avl, 85);
+  avl = gpr_avl_add(avl, box(964), box(1314));
+  avl = gpr_avl_add(avl, box(559), box(1315));
+  avl = remove_int(avl, 167);
+  avl = gpr_avl_add(avl, box(866), box(1317));
+  avl = remove_int(avl, 275);
+  avl = gpr_avl_add(avl, box(173), box(1319));
+  avl = gpr_avl_add(avl, box(765), box(1320));
+  avl = remove_int(avl, 883);
+  avl = gpr_avl_add(avl, box(547), box(1322));
+  avl = gpr_avl_add(avl, box(847), box(1323));
+  avl = remove_int(avl, 817);
+  avl = remove_int(avl, 850);
+  avl = remove_int(avl, 718);
+  avl = gpr_avl_add(avl, box(806), box(1327));
+  avl = gpr_avl_add(avl, box(360), box(1328));
+  avl = remove_int(avl, 991);
+  avl = gpr_avl_add(avl, box(493), box(1330));
+  avl = remove_int(avl, 516);
+  avl = gpr_avl_add(avl, box(361), box(1332));
+  avl = remove_int(avl, 355);
+  avl = gpr_avl_add(avl, box(512), box(1334));
+  avl = gpr_avl_add(avl, box(191), box(1335));
+  avl = remove_int(avl, 703);
+  avl = gpr_avl_add(avl, box(333), box(1337));
+  avl = remove_int(avl, 481);
+  avl = gpr_avl_add(avl, box(501), box(1339));
+  avl = remove_int(avl, 532);
+  avl = remove_int(avl, 510);
+  avl = gpr_avl_add(avl, box(793), box(1342));
+  avl = gpr_avl_add(avl, box(234), box(1343));
+  avl = remove_int(avl, 159);
+  avl = remove_int(avl, 429);
+  avl = remove_int(avl, 728);
+  avl = remove_int(avl, 288);
+  avl = gpr_avl_add(avl, box(281), box(1348));
+  avl = gpr_avl_add(avl, box(702), box(1349));
+  avl = gpr_avl_add(avl, box(149), box(1350));
+  avl = remove_int(avl, 22);
+  avl = remove_int(avl, 944);
+  avl = remove_int(avl, 55);
+  avl = remove_int(avl, 512);
+  avl = remove_int(avl, 676);
+  avl = remove_int(avl, 884);
+  avl = gpr_avl_add(avl, box(246), box(1357));
+  avl = gpr_avl_add(avl, box(455), box(1358));
+  avl = remove_int(avl, 782);
+  avl = remove_int(avl, 682);
+  avl = gpr_avl_add(avl, box(243), box(1361));
+  avl = gpr_avl_add(avl, box(109), box(1362));
+  avl = gpr_avl_add(avl, box(452), box(1363));
+  avl = remove_int(avl, 151);
+  avl = gpr_avl_add(avl, box(159), box(1365));
+  avl = remove_int(avl, 1023);
+  avl = gpr_avl_add(avl, box(129), box(1367));
+  avl = gpr_avl_add(avl, box(537), box(1368));
+  avl = remove_int(avl, 321);
+  avl = gpr_avl_add(avl, box(740), box(1370));
+  avl = remove_int(avl, 45);
+  avl = remove_int(avl, 136);
+  avl = gpr_avl_add(avl, box(229), box(1373));
+  avl = remove_int(avl, 772);
+  avl = gpr_avl_add(avl, box(181), box(1375));
+  avl = remove_int(avl, 175);
+  avl = gpr_avl_add(avl, box(817), box(1377));
+  avl = remove_int(avl, 956);
+  avl = gpr_avl_add(avl, box(675), box(1379));
+  avl = gpr_avl_add(avl, box(375), box(1380));
+  avl = remove_int(avl, 384);
+  avl = gpr_avl_add(avl, box(1016), box(1382));
+  avl = remove_int(avl, 295);
+  avl = remove_int(avl, 697);
+  avl = remove_int(avl, 554);
+  avl = remove_int(avl, 590);
+  avl = remove_int(avl, 1014);
+  avl = gpr_avl_add(avl, box(890), box(1388));
+  avl = gpr_avl_add(avl, box(293), box(1389));
+  avl = remove_int(avl, 207);
+  avl = remove_int(avl, 46);
+  avl = gpr_avl_add(avl, box(899), box(1392));
+  avl = gpr_avl_add(avl, box(666), box(1393));
+  avl = gpr_avl_add(avl, box(85), box(1394));
+  avl = gpr_avl_add(avl, box(914), box(1395));
+  avl = gpr_avl_add(avl, box(128), box(1396));
+  avl = gpr_avl_add(avl, box(835), box(1397));
+  avl = gpr_avl_add(avl, box(787), box(1398));
+  avl = gpr_avl_add(avl, box(649), box(1399));
+  avl = gpr_avl_add(avl, box(723), box(1400));
+  avl = remove_int(avl, 874);
+  avl = gpr_avl_add(avl, box(778), box(1402));
+  avl = gpr_avl_add(avl, box(1015), box(1403));
+  avl = gpr_avl_add(avl, box(59), box(1404));
+  avl = gpr_avl_add(avl, box(259), box(1405));
+  avl = gpr_avl_add(avl, box(758), box(1406));
+  avl = remove_int(avl, 648);
+  avl = gpr_avl_add(avl, box(145), box(1408));
+  avl = gpr_avl_add(avl, box(440), box(1409));
+  avl = remove_int(avl, 608);
+  avl = remove_int(avl, 690);
+  avl = gpr_avl_add(avl, box(605), box(1412));
+  avl = remove_int(avl, 856);
+  avl = remove_int(avl, 608);
+  avl = gpr_avl_add(avl, box(829), box(1415));
+  avl = gpr_avl_add(avl, box(660), box(1416));
+  avl = remove_int(avl, 596);
+  avl = gpr_avl_add(avl, box(519), box(1418));
+  avl = gpr_avl_add(avl, box(35), box(1419));
+  avl = gpr_avl_add(avl, box(871), box(1420));
+  avl = remove_int(avl, 845);
+  avl = gpr_avl_add(avl, box(600), box(1422));
+  avl = gpr_avl_add(avl, box(215), box(1423));
+  avl = remove_int(avl, 761);
+  avl = gpr_avl_add(avl, box(975), box(1425));
+  avl = remove_int(avl, 987);
+  avl = gpr_avl_add(avl, box(58), box(1427));
+  avl = remove_int(avl, 119);
+  avl = gpr_avl_add(avl, box(937), box(1429));
+  avl = gpr_avl_add(avl, box(372), box(1430));
+  avl = gpr_avl_add(avl, box(11), box(1431));
+  avl = gpr_avl_add(avl, box(398), box(1432));
+  avl = gpr_avl_add(avl, box(423), box(1433));
+  avl = remove_int(avl, 171);
+  avl = gpr_avl_add(avl, box(473), box(1435));
+  avl = remove_int(avl, 752);
+  avl = remove_int(avl, 625);
+  avl = remove_int(avl, 764);
+  avl = remove_int(avl, 49);
+  avl = gpr_avl_add(avl, box(472), box(1440));
+  avl = remove_int(avl, 847);
+  avl = remove_int(avl, 642);
+  avl = remove_int(avl, 1004);
+  avl = remove_int(avl, 795);
+  avl = remove_int(avl, 465);
+  avl = gpr_avl_add(avl, box(636), box(1446));
+  avl = remove_int(avl, 152);
+  avl = gpr_avl_add(avl, box(61), box(1448));
+  avl = remove_int(avl, 929);
+  avl = remove_int(avl, 9);
+  avl = gpr_avl_add(avl, box(251), box(1451));
+  avl = gpr_avl_add(avl, box(672), box(1452));
+  avl = gpr_avl_add(avl, box(66), box(1453));
+  avl = remove_int(avl, 693);
+  avl = remove_int(avl, 914);
+  avl = remove_int(avl, 116);
+  avl = remove_int(avl, 577);
+  avl = gpr_avl_add(avl, box(618), box(1458));
+  avl = gpr_avl_add(avl, box(495), box(1459));
+  avl = remove_int(avl, 450);
+  avl = gpr_avl_add(avl, box(533), box(1461));
+  avl = gpr_avl_add(avl, box(414), box(1462));
+  avl = remove_int(avl, 74);
+  avl = remove_int(avl, 236);
+  avl = gpr_avl_add(avl, box(707), box(1465));
+  avl = gpr_avl_add(avl, box(357), box(1466));
+  avl = gpr_avl_add(avl, box(1007), box(1467));
+  avl = gpr_avl_add(avl, box(811), box(1468));
+  avl = gpr_avl_add(avl, box(418), box(1469));
+  avl = gpr_avl_add(avl, box(164), box(1470));
+  avl = gpr_avl_add(avl, box(622), box(1471));
+  avl = remove_int(avl, 22);
+  avl = remove_int(avl, 14);
+  avl = remove_int(avl, 732);
+  avl = remove_int(avl, 7);
+  avl = remove_int(avl, 447);
+  avl = gpr_avl_add(avl, box(221), box(1477));
+  avl = gpr_avl_add(avl, box(202), box(1478));
+  avl = gpr_avl_add(avl, box(312), box(1479));
+  avl = remove_int(avl, 274);
+  avl = gpr_avl_add(avl, box(684), box(1481));
+  avl = gpr_avl_add(avl, box(954), box(1482));
+  avl = gpr_avl_add(avl, box(637), box(1483));
+  avl = remove_int(avl, 716);
+  avl = gpr_avl_add(avl, box(198), box(1485));
+  avl = remove_int(avl, 340);
+  avl = remove_int(avl, 137);
+  avl = remove_int(avl, 995);
+  avl = remove_int(avl, 1004);
+  avl = gpr_avl_add(avl, box(661), box(1490));
+  avl = gpr_avl_add(avl, box(862), box(1491));
+  avl = remove_int(avl, 527);
+  avl = gpr_avl_add(avl, box(945), box(1493));
+  avl = remove_int(avl, 355);
+  avl = remove_int(avl, 144);
+  avl = gpr_avl_add(avl, box(229), box(1496));
+  avl = gpr_avl_add(avl, box(237), box(1497));
+  avl = remove_int(avl, 471);
+  avl = remove_int(avl, 901);
+  avl = gpr_avl_add(avl, box(905), box(1500));
+  avl = remove_int(avl, 19);
+  avl = remove_int(avl, 896);
+  avl = remove_int(avl, 585);
+  avl = remove_int(avl, 308);
+  avl = gpr_avl_add(avl, box(547), box(1505));
+  avl = gpr_avl_add(avl, box(552), box(1506));
+  avl = gpr_avl_add(avl, box(30), box(1507));
+  avl = gpr_avl_add(avl, box(445), box(1508));
+  avl = remove_int(avl, 785);
+  avl = remove_int(avl, 185);
+  avl = gpr_avl_add(avl, box(405), box(1511));
+  avl = gpr_avl_add(avl, box(733), box(1512));
+  avl = gpr_avl_add(avl, box(573), box(1513));
+  avl = gpr_avl_add(avl, box(492), box(1514));
+  avl = gpr_avl_add(avl, box(343), box(1515));
+  avl = gpr_avl_add(avl, box(527), box(1516));
+  avl = gpr_avl_add(avl, box(596), box(1517));
+  avl = gpr_avl_add(avl, box(519), box(1518));
+  avl = remove_int(avl, 243);
+  avl = remove_int(avl, 722);
+  avl = gpr_avl_add(avl, box(772), box(1521));
+  avl = remove_int(avl, 152);
+  avl = remove_int(avl, 305);
+  avl = gpr_avl_add(avl, box(754), box(1524));
+  avl = gpr_avl_add(avl, box(373), box(1525));
+  avl = remove_int(avl, 995);
+  avl = gpr_avl_add(avl, box(329), box(1527));
+  avl = remove_int(avl, 397);
+  avl = gpr_avl_add(avl, box(884), box(1529));
+  avl = remove_int(avl, 329);
+  avl = remove_int(avl, 240);
+  avl = gpr_avl_add(avl, box(566), box(1532));
+  avl = gpr_avl_add(avl, box(232), box(1533));
+  avl = remove_int(avl, 993);
+  avl = gpr_avl_add(avl, box(888), box(1535));
+  avl = remove_int(avl, 242);
+  avl = gpr_avl_add(avl, box(941), box(1537));
+  avl = remove_int(avl, 415);
+  avl = gpr_avl_add(avl, box(992), box(1539));
+  avl = remove_int(avl, 289);
+  avl = gpr_avl_add(avl, box(60), box(1541));
+  avl = gpr_avl_add(avl, box(97), box(1542));
+  avl = remove_int(avl, 965);
+  avl = remove_int(avl, 267);
+  avl = remove_int(avl, 360);
+  avl = gpr_avl_add(avl, box(5), box(1546));
+  avl = remove_int(avl, 429);
+  avl = gpr_avl_add(avl, box(412), box(1548));
+  avl = remove_int(avl, 632);
+  avl = remove_int(avl, 113);
+  avl = gpr_avl_add(avl, box(48), box(1551));
+  avl = gpr_avl_add(avl, box(108), box(1552));
+  avl = gpr_avl_add(avl, box(750), box(1553));
+  avl = remove_int(avl, 188);
+  avl = gpr_avl_add(avl, box(668), box(1555));
+  avl = remove_int(avl, 37);
+  avl = remove_int(avl, 737);
+  avl = gpr_avl_add(avl, box(93), box(1558));
+  avl = gpr_avl_add(avl, box(628), box(1559));
+  avl = gpr_avl_add(avl, box(480), box(1560));
+  avl = remove_int(avl, 958);
+  avl = remove_int(avl, 565);
+  avl = remove_int(avl, 32);
+  avl = remove_int(avl, 1);
+  avl = remove_int(avl, 335);
+  avl = gpr_avl_add(avl, box(136), box(1566));
+  avl = gpr_avl_add(avl, box(469), box(1567));
+  avl = remove_int(avl, 349);
+  avl = gpr_avl_add(avl, box(768), box(1569));
+  avl = gpr_avl_add(avl, box(915), box(1570));
+  avl = remove_int(avl, 1014);
+  avl = gpr_avl_add(avl, box(117), box(1572));
+  avl = remove_int(avl, 62);
+  avl = gpr_avl_add(avl, box(382), box(1574));
+  avl = remove_int(avl, 571);
+  avl = gpr_avl_add(avl, box(655), box(1576));
+  avl = gpr_avl_add(avl, box(323), box(1577));
+  avl = remove_int(avl, 869);
+  avl = remove_int(avl, 151);
+  avl = gpr_avl_add(avl, box(1019), box(1580));
+  avl = gpr_avl_add(avl, box(984), box(1581));
+  avl = gpr_avl_add(avl, box(870), box(1582));
+  avl = gpr_avl_add(avl, box(376), box(1583));
+  avl = remove_int(avl, 625);
+  avl = gpr_avl_add(avl, box(733), box(1585));
+  avl = remove_int(avl, 532);
+  avl = remove_int(avl, 444);
+  avl = gpr_avl_add(avl, box(428), box(1588));
+  avl = gpr_avl_add(avl, box(860), box(1589));
+  avl = gpr_avl_add(avl, box(173), box(1590));
+  avl = remove_int(avl, 649);
+  avl = remove_int(avl, 913);
+  avl = remove_int(avl, 1);
+  avl = remove_int(avl, 304);
+  avl = gpr_avl_add(avl, box(604), box(1595));
+  avl = gpr_avl_add(avl, box(639), box(1596));
+  avl = remove_int(avl, 431);
+  avl = gpr_avl_add(avl, box(993), box(1598));
+  avl = remove_int(avl, 681);
+  avl = remove_int(avl, 927);
+  avl = gpr_avl_add(avl, box(87), box(1601));
+  avl = gpr_avl_add(avl, box(91), box(1602));
+  avl = remove_int(avl, 61);
+  avl = remove_int(avl, 14);
+  avl = remove_int(avl, 305);
+  avl = remove_int(avl, 304);
+  avl = remove_int(avl, 1016);
+  avl = gpr_avl_add(avl, box(903), box(1608));
+  avl = gpr_avl_add(avl, box(951), box(1609));
+  avl = gpr_avl_add(avl, box(146), box(1610));
+  avl = gpr_avl_add(avl, box(482), box(1611));
+  avl = gpr_avl_add(avl, box(71), box(1612));
+  avl = remove_int(avl, 246);
+  avl = remove_int(avl, 696);
+  avl = gpr_avl_add(avl, box(636), box(1615));
+  avl = gpr_avl_add(avl, box(295), box(1616));
+  avl = remove_int(avl, 11);
+  avl = remove_int(avl, 231);
+  avl = gpr_avl_add(avl, box(905), box(1619));
+  avl = gpr_avl_add(avl, box(993), box(1620));
+  avl = gpr_avl_add(avl, box(433), box(1621));
+  avl = gpr_avl_add(avl, box(117), box(1622));
+  avl = gpr_avl_add(avl, box(467), box(1623));
+  avl = remove_int(avl, 419);
+  avl = gpr_avl_add(avl, box(179), box(1625));
+  avl = remove_int(avl, 926);
+  avl = remove_int(avl, 326);
+  avl = gpr_avl_add(avl, box(551), box(1628));
+  avl = remove_int(avl, 14);
+  avl = remove_int(avl, 476);
+  avl = remove_int(avl, 823);
+  avl = gpr_avl_add(avl, box(350), box(1632));
+  avl = gpr_avl_add(avl, box(133), box(1633));
+  avl = remove_int(avl, 906);
+  avl = gpr_avl_add(avl, box(827), box(1635));
+  avl = gpr_avl_add(avl, box(201), box(1636));
+  avl = remove_int(avl, 124);
+  avl = remove_int(avl, 662);
+  avl = gpr_avl_add(avl, box(314), box(1639));
+  avl = gpr_avl_add(avl, box(986), box(1640));
+  avl = gpr_avl_add(avl, box(622), box(1641));
+  avl = remove_int(avl, 130);
+  avl = gpr_avl_add(avl, box(861), box(1643));
+  avl = remove_int(avl, 497);
+  avl = remove_int(avl, 905);
+  avl = gpr_avl_add(avl, box(502), box(1646));
+  avl = remove_int(avl, 721);
+  avl = gpr_avl_add(avl, box(514), box(1648));
+  avl = gpr_avl_add(avl, box(410), box(1649));
+  avl = remove_int(avl, 869);
+  avl = remove_int(avl, 247);
+  avl = gpr_avl_add(avl, box(450), box(1652));
+  avl = remove_int(avl, 364);
+  avl = gpr_avl_add(avl, box(963), box(1654));
+  avl = gpr_avl_add(avl, box(146), box(1655));
+  avl = remove_int(avl, 147);
+  avl = remove_int(avl, 789);
+  avl = gpr_avl_add(avl, box(693), box(1658));
+  avl = gpr_avl_add(avl, box(959), box(1659));
+  avl = remove_int(avl, 478);
+  avl = gpr_avl_add(avl, box(116), box(1661));
+  avl = gpr_avl_add(avl, box(520), box(1662));
+  avl = gpr_avl_add(avl, box(809), box(1663));
+  avl = gpr_avl_add(avl, box(667), box(1664));
+  avl = gpr_avl_add(avl, box(406), box(1665));
+  avl = remove_int(avl, 409);
+  avl = gpr_avl_add(avl, box(558), box(1667));
+  avl = gpr_avl_add(avl, box(0), box(1668));
+  avl = gpr_avl_add(avl, box(948), box(1669));
+  avl = gpr_avl_add(avl, box(576), box(1670));
+  avl = remove_int(avl, 864);
+  avl = remove_int(avl, 840);
+  avl = remove_int(avl, 1001);
+  avl = gpr_avl_add(avl, box(232), box(1674));
+  avl = remove_int(avl, 676);
+  avl = remove_int(avl, 752);
+  avl = remove_int(avl, 667);
+  avl = remove_int(avl, 605);
+  avl = gpr_avl_add(avl, box(258), box(1679));
+  avl = gpr_avl_add(avl, box(648), box(1680));
+  avl = gpr_avl_add(avl, box(761), box(1681));
+  avl = remove_int(avl, 293);
+  avl = remove_int(avl, 893);
+  avl = gpr_avl_add(avl, box(194), box(1684));
+  avl = remove_int(avl, 233);
+  avl = gpr_avl_add(avl, box(888), box(1686));
+  avl = remove_int(avl, 470);
+  avl = remove_int(avl, 703);
+  avl = remove_int(avl, 190);
+  avl = remove_int(avl, 359);
+  avl = gpr_avl_add(avl, box(621), box(1691));
+  avl = remove_int(avl, 634);
+  avl = remove_int(avl, 335);
+  avl = gpr_avl_add(avl, box(718), box(1694));
+  avl = gpr_avl_add(avl, box(463), box(1695));
+  avl = gpr_avl_add(avl, box(233), box(1696));
+  avl = remove_int(avl, 376);
+  avl = remove_int(avl, 496);
+  avl = remove_int(avl, 819);
+  avl = remove_int(avl, 38);
+  avl = remove_int(avl, 436);
+  avl = remove_int(avl, 102);
+  avl = gpr_avl_add(avl, box(607), box(1703));
+  avl = remove_int(avl, 329);
+  avl = gpr_avl_add(avl, box(716), box(1705));
+  avl = remove_int(avl, 639);
+  avl = remove_int(avl, 775);
+  avl = remove_int(avl, 578);
+  avl = remove_int(avl, 464);
+  avl = remove_int(avl, 679);
+  avl = remove_int(avl, 615);
+  avl = remove_int(avl, 104);
+  avl = gpr_avl_add(avl, box(414), box(1713));
+  avl = gpr_avl_add(avl, box(212), box(1714));
+  avl = gpr_avl_add(avl, box(266), box(1715));
+  avl = gpr_avl_add(avl, box(238), box(1716));
+  avl = remove_int(avl, 153);
+  avl = gpr_avl_add(avl, box(585), box(1718));
+  avl = remove_int(avl, 121);
+  avl = gpr_avl_add(avl, box(534), box(1720));
+  avl = remove_int(avl, 579);
+  avl = gpr_avl_add(avl, box(127), box(1722));
+  avl = gpr_avl_add(avl, box(399), box(1723));
+  avl = remove_int(avl, 417);
+  avl = gpr_avl_add(avl, box(978), box(1725));
+  avl = gpr_avl_add(avl, box(768), box(1726));
+  avl = remove_int(avl, 985);
+  avl = gpr_avl_add(avl, box(536), box(1728));
+  avl = gpr_avl_add(avl, box(449), box(1729));
+  avl = gpr_avl_add(avl, box(586), box(1730));
+  avl = remove_int(avl, 998);
+  avl = remove_int(avl, 394);
+  avl = remove_int(avl, 141);
+  avl = gpr_avl_add(avl, box(889), box(1734));
+  avl = gpr_avl_add(avl, box(871), box(1735));
+  avl = gpr_avl_add(avl, box(76), box(1736));
+  avl = gpr_avl_add(avl, box(549), box(1737));
+  avl = gpr_avl_add(avl, box(757), box(1738));
+  avl = remove_int(avl, 908);
+  avl = gpr_avl_add(avl, box(789), box(1740));
+  avl = remove_int(avl, 224);
+  avl = gpr_avl_add(avl, box(407), box(1742));
+  avl = gpr_avl_add(avl, box(381), box(1743));
+  avl = gpr_avl_add(avl, box(561), box(1744));
+  avl = gpr_avl_add(avl, box(667), box(1745));
+  avl = gpr_avl_add(avl, box(522), box(1746));
+  avl = gpr_avl_add(avl, box(948), box(1747));
+  avl = remove_int(avl, 770);
+  avl = gpr_avl_add(avl, box(872), box(1749));
+  avl = gpr_avl_add(avl, box(327), box(1750));
+  avl = remove_int(avl, 10);
+  avl = gpr_avl_add(avl, box(122), box(1752));
+  avl = remove_int(avl, 606);
+  avl = gpr_avl_add(avl, box(485), box(1754));
+  avl = remove_int(avl, 6);
+  avl = gpr_avl_add(avl, box(329), box(1756));
+  avl = gpr_avl_add(avl, box(783), box(1757));
+  avl = remove_int(avl, 416);
+  avl = gpr_avl_add(avl, box(656), box(1759));
+  avl = gpr_avl_add(avl, box(971), box(1760));
+  avl = gpr_avl_add(avl, box(77), box(1761));
+  avl = gpr_avl_add(avl, box(942), box(1762));
+  avl = remove_int(avl, 361);
+  avl = gpr_avl_add(avl, box(66), box(1764));
+  avl = gpr_avl_add(avl, box(299), box(1765));
+  avl = gpr_avl_add(avl, box(929), box(1766));
+  avl = gpr_avl_add(avl, box(797), box(1767));
+  avl = remove_int(avl, 869);
+  avl = remove_int(avl, 907);
+  avl = gpr_avl_add(avl, box(870), box(1770));
+  avl = remove_int(avl, 580);
+  avl = remove_int(avl, 120);
+  avl = gpr_avl_add(avl, box(913), box(1773));
+  avl = remove_int(avl, 480);
+  avl = gpr_avl_add(avl, box(489), box(1775));
+  avl = remove_int(avl, 845);
+  avl = gpr_avl_add(avl, box(896), box(1777));
+  avl = remove_int(avl, 567);
+  avl = remove_int(avl, 427);
+  avl = gpr_avl_add(avl, box(443), box(1780));
+  avl = gpr_avl_add(avl, box(3), box(1781));
+  avl = remove_int(avl, 12);
+  avl = gpr_avl_add(avl, box(376), box(1783));
+  avl = gpr_avl_add(avl, box(155), box(1784));
+  avl = gpr_avl_add(avl, box(188), box(1785));
+  avl = gpr_avl_add(avl, box(149), box(1786));
+  avl = gpr_avl_add(avl, box(178), box(1787));
+  avl = remove_int(avl, 84);
+  avl = gpr_avl_add(avl, box(805), box(1789));
+  avl = gpr_avl_add(avl, box(612), box(1790));
+  avl = remove_int(avl, 991);
+  avl = gpr_avl_add(avl, box(837), box(1792));
+  avl = remove_int(avl, 173);
+  avl = remove_int(avl, 72);
+  avl = gpr_avl_add(avl, box(1014), box(1795));
+  avl = remove_int(avl, 303);
+  avl = gpr_avl_add(avl, box(865), box(1797));
+  avl = gpr_avl_add(avl, box(793), box(1798));
+  avl = remove_int(avl, 173);
+  avl = remove_int(avl, 477);
+  avl = gpr_avl_add(avl, box(950), box(1801));
+  avl = gpr_avl_add(avl, box(105), box(1802));
+  avl = gpr_avl_add(avl, box(895), box(1803));
+  avl = gpr_avl_add(avl, box(171), box(1804));
+  avl = gpr_avl_add(avl, box(753), box(1805));
+  avl = gpr_avl_add(avl, box(946), box(1806));
+  avl = remove_int(avl, 194);
+  avl = remove_int(avl, 559);
+  avl = remove_int(avl, 116);
+  avl = gpr_avl_add(avl, box(968), box(1810));
+  avl = remove_int(avl, 124);
+  avl = remove_int(avl, 99);
+  avl = gpr_avl_add(avl, box(563), box(1813));
+  avl = remove_int(avl, 182);
+  avl = gpr_avl_add(avl, box(816), box(1815));
+  avl = remove_int(avl, 73);
+  avl = remove_int(avl, 261);
+  avl = gpr_avl_add(avl, box(847), box(1818));
+  avl = gpr_avl_add(avl, box(368), box(1819));
+  avl = gpr_avl_add(avl, box(808), box(1820));
+  avl = gpr_avl_add(avl, box(779), box(1821));
+  avl = remove_int(avl, 818);
+  avl = gpr_avl_add(avl, box(466), box(1823));
+  avl = remove_int(avl, 316);
+  avl = gpr_avl_add(avl, box(986), box(1825));
+  avl = gpr_avl_add(avl, box(688), box(1826));
+  avl = gpr_avl_add(avl, box(509), box(1827));
+  avl = gpr_avl_add(avl, box(51), box(1828));
+  avl = remove_int(avl, 655);
+  avl = remove_int(avl, 785);
+  avl = remove_int(avl, 893);
+  avl = gpr_avl_add(avl, box(167), box(1832));
+  avl = remove_int(avl, 13);
+  avl = remove_int(avl, 263);
+  avl = gpr_avl_add(avl, box(1009), box(1835));
+  avl = remove_int(avl, 480);
+  avl = remove_int(avl, 778);
+  avl = remove_int(avl, 713);
+  avl = remove_int(avl, 628);
+  avl = gpr_avl_add(avl, box(803), box(1840));
+  avl = remove_int(avl, 267);
+  avl = gpr_avl_add(avl, box(676), box(1842));
+  avl = gpr_avl_add(avl, box(231), box(1843));
+  avl = gpr_avl_add(avl, box(824), box(1844));
+  avl = remove_int(avl, 961);
+  avl = gpr_avl_add(avl, box(311), box(1846));
+  avl = gpr_avl_add(avl, box(420), box(1847));
+  avl = gpr_avl_add(avl, box(960), box(1848));
+  avl = gpr_avl_add(avl, box(468), box(1849));
+  avl = gpr_avl_add(avl, box(815), box(1850));
+  avl = remove_int(avl, 247);
+  avl = remove_int(avl, 194);
+  avl = gpr_avl_add(avl, box(546), box(1853));
+  avl = remove_int(avl, 222);
+  avl = remove_int(avl, 914);
+  avl = remove_int(avl, 741);
+  avl = gpr_avl_add(avl, box(470), box(1857));
+  avl = gpr_avl_add(avl, box(933), box(1858));
+  avl = gpr_avl_add(avl, box(97), box(1859));
+  avl = remove_int(avl, 564);
+  avl = remove_int(avl, 295);
+  avl = gpr_avl_add(avl, box(864), box(1862));
+  avl = remove_int(avl, 329);
+  avl = gpr_avl_add(avl, box(124), box(1864));
+  avl = gpr_avl_add(avl, box(1000), box(1865));
+  avl = gpr_avl_add(avl, box(228), box(1866));
+  avl = gpr_avl_add(avl, box(187), box(1867));
+  avl = remove_int(avl, 224);
+  avl = remove_int(avl, 306);
+  avl = remove_int(avl, 884);
+  avl = gpr_avl_add(avl, box(449), box(1871));
+  avl = gpr_avl_add(avl, box(353), box(1872));
+  avl = gpr_avl_add(avl, box(994), box(1873));
+  avl = gpr_avl_add(avl, box(596), box(1874));
+  avl = gpr_avl_add(avl, box(996), box(1875));
+  avl = gpr_avl_add(avl, box(101), box(1876));
+  avl = gpr_avl_add(avl, box(1012), box(1877));
+  avl = gpr_avl_add(avl, box(982), box(1878));
+  avl = gpr_avl_add(avl, box(742), box(1879));
+  avl = remove_int(avl, 92);
+  avl = remove_int(avl, 1022);
+  avl = gpr_avl_add(avl, box(941), box(1882));
+  avl = remove_int(avl, 742);
+  avl = remove_int(avl, 919);
+  avl = gpr_avl_add(avl, box(588), box(1885));
+  avl = remove_int(avl, 221);
+  avl = gpr_avl_add(avl, box(356), box(1887));
+  avl = gpr_avl_add(avl, box(932), box(1888));
+  avl = remove_int(avl, 837);
+  avl = gpr_avl_add(avl, box(394), box(1890));
+  avl = gpr_avl_add(avl, box(642), box(1891));
+  avl = gpr_avl_add(avl, box(52), box(1892));
+  avl = gpr_avl_add(avl, box(437), box(1893));
+  avl = gpr_avl_add(avl, box(948), box(1894));
+  avl = gpr_avl_add(avl, box(93), box(1895));
+  avl = remove_int(avl, 873);
+  avl = remove_int(avl, 336);
+  avl = remove_int(avl, 277);
+  avl = remove_int(avl, 932);
+  avl = gpr_avl_add(avl, box(80), box(1900));
+  avl = gpr_avl_add(avl, box(952), box(1901));
+  avl = gpr_avl_add(avl, box(510), box(1902));
+  avl = remove_int(avl, 876);
+  avl = remove_int(avl, 612);
+  avl = gpr_avl_add(avl, box(923), box(1905));
+  avl = gpr_avl_add(avl, box(475), box(1906));
+  avl = remove_int(avl, 478);
+  avl = remove_int(avl, 148);
+  avl = gpr_avl_add(avl, box(538), box(1909));
+  avl = remove_int(avl, 47);
+  avl = gpr_avl_add(avl, box(89), box(1911));
+  avl = remove_int(avl, 723);
+  avl = gpr_avl_add(avl, box(687), box(1913));
+  avl = gpr_avl_add(avl, box(480), box(1914));
+  avl = gpr_avl_add(avl, box(149), box(1915));
+  avl = remove_int(avl, 68);
+  avl = remove_int(avl, 862);
+  avl = remove_int(avl, 363);
+  avl = gpr_avl_add(avl, box(996), box(1919));
+  avl = remove_int(avl, 380);
+  avl = gpr_avl_add(avl, box(957), box(1921));
+  avl = remove_int(avl, 413);
+  avl = gpr_avl_add(avl, box(360), box(1923));
+  avl = gpr_avl_add(avl, box(304), box(1924));
+  avl = gpr_avl_add(avl, box(634), box(1925));
+  avl = gpr_avl_add(avl, box(506), box(1926));
+  avl = remove_int(avl, 248);
+  avl = gpr_avl_add(avl, box(124), box(1928));
+  avl = gpr_avl_add(avl, box(181), box(1929));
+  avl = remove_int(avl, 507);
+  avl = gpr_avl_add(avl, box(141), box(1931));
+  avl = remove_int(avl, 409);
+  avl = remove_int(avl, 129);
+  avl = remove_int(avl, 694);
+  avl = remove_int(avl, 723);
+  avl = gpr_avl_add(avl, box(998), box(1936));
+  avl = gpr_avl_add(avl, box(906), box(1937));
+  avl = gpr_avl_add(avl, box(44), box(1938));
+  avl = remove_int(avl, 949);
+  avl = remove_int(avl, 117);
+  avl = gpr_avl_add(avl, box(700), box(1941));
+  avl = gpr_avl_add(avl, box(258), box(1942));
+  avl = remove_int(avl, 828);
+  avl = gpr_avl_add(avl, box(860), box(1944));
+  avl = gpr_avl_add(avl, box(987), box(1945));
+  avl = gpr_avl_add(avl, box(316), box(1946));
+  avl = gpr_avl_add(avl, box(919), box(1947));
+  avl = remove_int(avl, 84);
+  avl = gpr_avl_add(avl, box(473), box(1949));
+  avl = remove_int(avl, 127);
+  avl = remove_int(avl, 829);
+  avl = remove_int(avl, 829);
+  avl = gpr_avl_add(avl, box(488), box(1953));
+  avl = gpr_avl_add(avl, box(954), box(1954));
+  avl = remove_int(avl, 198);
+  avl = remove_int(avl, 972);
+  avl = remove_int(avl, 670);
+  avl = gpr_avl_add(avl, box(822), box(1958));
+  avl = remove_int(avl, 589);
+  avl = remove_int(avl, 459);
+  avl = gpr_avl_add(avl, box(1003), box(1961));
+  avl = gpr_avl_add(avl, box(657), box(1962));
+  avl = gpr_avl_add(avl, box(477), box(1963));
+  avl = gpr_avl_add(avl, box(923), box(1964));
+  avl = remove_int(avl, 496);
+  avl = remove_int(avl, 99);
+  avl = gpr_avl_add(avl, box(127), box(1967));
+  avl = gpr_avl_add(avl, box(1013), box(1968));
+  avl = gpr_avl_add(avl, box(778), box(1969));
+  avl = remove_int(avl, 5);
+  avl = remove_int(avl, 990);
+  avl = remove_int(avl, 850);
+  avl = remove_int(avl, 160);
+  avl = remove_int(avl, 86);
+  avl = gpr_avl_add(avl, box(283), box(1975));
+  avl = remove_int(avl, 278);
+  avl = remove_int(avl, 297);
+  avl = remove_int(avl, 137);
+  avl = remove_int(avl, 653);
+  avl = gpr_avl_add(avl, box(702), box(1980));
+  avl = remove_int(avl, 63);
+  avl = remove_int(avl, 427);
+  avl = remove_int(avl, 706);
+  avl = remove_int(avl, 806);
+  avl = gpr_avl_add(avl, box(335), box(1985));
+  avl = gpr_avl_add(avl, box(412), box(1986));
+  avl = remove_int(avl, 766);
+  avl = remove_int(avl, 937);
+  avl = remove_int(avl, 886);
+  avl = remove_int(avl, 652);
+  avl = gpr_avl_add(avl, box(545), box(1991));
+  avl = gpr_avl_add(avl, box(408), box(1992));
+  avl = gpr_avl_add(avl, box(841), box(1993));
+  avl = remove_int(avl, 593);
+  avl = gpr_avl_add(avl, box(582), box(1995));
+  avl = gpr_avl_add(avl, box(597), box(1996));
+  avl = remove_int(avl, 49);
+  avl = remove_int(avl, 835);
+  avl = gpr_avl_add(avl, box(417), box(1999));
+  avl = gpr_avl_add(avl, box(191), box(2000));
+  avl = remove_int(avl, 406);
+  avl = gpr_avl_add(avl, box(30), box(2002));
+  avl = remove_int(avl, 841);
+  avl = remove_int(avl, 50);
+  avl = gpr_avl_add(avl, box(967), box(2005));
+  avl = gpr_avl_add(avl, box(849), box(2006));
+  avl = remove_int(avl, 608);
+  avl = gpr_avl_add(avl, box(306), box(2008));
+  avl = remove_int(avl, 779);
+  avl = gpr_avl_add(avl, box(897), box(2010));
+  avl = gpr_avl_add(avl, box(147), box(2011));
+  avl = remove_int(avl, 982);
+  avl = gpr_avl_add(avl, box(470), box(2013));
+  avl = remove_int(avl, 951);
+  avl = gpr_avl_add(avl, box(388), box(2015));
+  avl = remove_int(avl, 616);
+  avl = remove_int(avl, 721);
+  avl = remove_int(avl, 942);
+  avl = remove_int(avl, 589);
+  avl = gpr_avl_add(avl, box(218), box(2020));
+  avl = remove_int(avl, 671);
+  avl = gpr_avl_add(avl, box(1020), box(2022));
+  avl = remove_int(avl, 277);
+  avl = gpr_avl_add(avl, box(681), box(2024));
+  avl = gpr_avl_add(avl, box(179), box(2025));
+  avl = gpr_avl_add(avl, box(370), box(2026));
+  avl = gpr_avl_add(avl, box(0), box(2027));
+  avl = remove_int(avl, 523);
+  avl = gpr_avl_add(avl, box(99), box(2029));
+  avl = gpr_avl_add(avl, box(334), box(2030));
+  avl = gpr_avl_add(avl, box(569), box(2031));
+  avl = gpr_avl_add(avl, box(257), box(2032));
+  avl = remove_int(avl, 572);
+  avl = gpr_avl_add(avl, box(805), box(2034));
+  avl = gpr_avl_add(avl, box(143), box(2035));
+  avl = gpr_avl_add(avl, box(670), box(2036));
+  avl = remove_int(avl, 42);
+  avl = gpr_avl_add(avl, box(46), box(2038));
+  avl = remove_int(avl, 970);
+  avl = gpr_avl_add(avl, box(353), box(2040));
+  avl = remove_int(avl, 258);
+  avl = gpr_avl_add(avl, box(451), box(2042));
+  avl = gpr_avl_add(avl, box(28), box(2043));
+  avl = gpr_avl_add(avl, box(729), box(2044));
+  avl = gpr_avl_add(avl, box(401), box(2045));
+  avl = gpr_avl_add(avl, box(614), box(2046));
+  avl = remove_int(avl, 990);
+  avl = remove_int(avl, 212);
+  avl = remove_int(avl, 22);
+  avl = remove_int(avl, 677);
+  avl = gpr_avl_add(avl, box(1016), box(2051));
+  avl = gpr_avl_add(avl, box(980), box(2052));
+  avl = gpr_avl_add(avl, box(990), box(2053));
+  avl = gpr_avl_add(avl, box(355), box(2054));
+  avl = remove_int(avl, 730);
+  avl = remove_int(avl, 37);
+  avl = gpr_avl_add(avl, box(407), box(2057));
+  avl = gpr_avl_add(avl, box(222), box(2058));
+  avl = gpr_avl_add(avl, box(439), box(2059));
+  avl = gpr_avl_add(avl, box(563), box(2060));
+  avl = remove_int(avl, 992);
+  avl = remove_int(avl, 786);
+  avl = gpr_avl_add(avl, box(1), box(2063));
+  avl = gpr_avl_add(avl, box(473), box(2064));
+  avl = gpr_avl_add(avl, box(992), box(2065));
+  avl = remove_int(avl, 190);
+  avl = remove_int(avl, 450);
+  avl = remove_int(avl, 1020);
+  avl = remove_int(avl, 149);
+  avl = gpr_avl_add(avl, box(329), box(2070));
+  avl = gpr_avl_add(avl, box(35), box(2071));
+  avl = remove_int(avl, 843);
+  avl = gpr_avl_add(avl, box(855), box(2073));
+  avl = remove_int(avl, 878);
+  avl = gpr_avl_add(avl, box(993), box(2075));
+  avl = gpr_avl_add(avl, box(87), box(2076));
+  avl = gpr_avl_add(avl, box(572), box(2077));
+  avl = remove_int(avl, 896);
+  avl = gpr_avl_add(avl, box(849), box(2079));
+  avl = remove_int(avl, 597);
+  avl = gpr_avl_add(avl, box(472), box(2081));
+  avl = remove_int(avl, 778);
+  avl = remove_int(avl, 934);
+  avl = remove_int(avl, 314);
+  avl = gpr_avl_add(avl, box(101), box(2085));
+  avl = remove_int(avl, 938);
+  avl = remove_int(avl, 1010);
+  avl = gpr_avl_add(avl, box(579), box(2088));
+  avl = remove_int(avl, 798);
+  avl = remove_int(avl, 88);
+  avl = gpr_avl_add(avl, box(851), box(2091));
+  avl = remove_int(avl, 705);
+  avl = gpr_avl_add(avl, box(26), box(2093));
+  avl = remove_int(avl, 973);
+  avl = gpr_avl_add(avl, box(923), box(2095));
+  avl = remove_int(avl, 668);
+  avl = gpr_avl_add(avl, box(310), box(2097));
+  avl = gpr_avl_add(avl, box(269), box(2098));
+  avl = remove_int(avl, 173);
+  avl = gpr_avl_add(avl, box(279), box(2100));
+  avl = remove_int(avl, 203);
+  avl = gpr_avl_add(avl, box(411), box(2102));
+  avl = remove_int(avl, 950);
+  avl = gpr_avl_add(avl, box(6), box(2104));
+  avl = remove_int(avl, 400);
+  avl = remove_int(avl, 468);
+  avl = remove_int(avl, 271);
+  avl = gpr_avl_add(avl, box(627), box(2108));
+  avl = remove_int(avl, 727);
+  avl = remove_int(avl, 148);
+  avl = remove_int(avl, 98);
+  avl = remove_int(avl, 997);
+  avl = remove_int(avl, 215);
+  avl = remove_int(avl, 628);
+  avl = remove_int(avl, 826);
+  avl = remove_int(avl, 664);
+  avl = gpr_avl_add(avl, box(76), box(2117));
+  avl = remove_int(avl, 194);
+  avl = remove_int(avl, 18);
+  avl = gpr_avl_add(avl, box(727), box(2120));
+  avl = remove_int(avl, 295);
+  avl = gpr_avl_add(avl, box(645), box(2122));
+  avl = remove_int(avl, 321);
+  avl = remove_int(avl, 863);
+  avl = gpr_avl_add(avl, box(824), box(2125));
+  avl = gpr_avl_add(avl, box(651), box(2126));
+  avl = gpr_avl_add(avl, box(804), box(2127));
+  avl = remove_int(avl, 307);
+  avl = gpr_avl_add(avl, box(867), box(2129));
+  avl = remove_int(avl, 384);
+  avl = gpr_avl_add(avl, box(819), box(2131));
+  avl = remove_int(avl, 674);
+  avl = gpr_avl_add(avl, box(76), box(2133));
+  avl = remove_int(avl, 898);
+  avl = gpr_avl_add(avl, box(45), box(2135));
+  avl = gpr_avl_add(avl, box(512), box(2136));
+  avl = remove_int(avl, 773);
+  avl = remove_int(avl, 907);
+  avl = remove_int(avl, 382);
+  avl = remove_int(avl, 95);
+  avl = remove_int(avl, 734);
+  avl = remove_int(avl, 81);
+  avl = gpr_avl_add(avl, box(348), box(2143));
+  avl = remove_int(avl, 509);
+  avl = remove_int(avl, 301);
+  avl = gpr_avl_add(avl, box(861), box(2146));
+  avl = gpr_avl_add(avl, box(918), box(2147));
+  avl = remove_int(avl, 992);
+  avl = gpr_avl_add(avl, box(356), box(2149));
+  avl = remove_int(avl, 64);
+  avl = remove_int(avl, 444);
+  avl = remove_int(avl, 741);
+  avl = gpr_avl_add(avl, box(710), box(2153));
+  avl = gpr_avl_add(avl, box(264), box(2154));
+  avl = remove_int(avl, 347);
+  avl = remove_int(avl, 250);
+  avl = gpr_avl_add(avl, box(82), box(2157));
+  avl = gpr_avl_add(avl, box(571), box(2158));
+  avl = remove_int(avl, 721);
+  avl = remove_int(avl, 622);
+  avl = gpr_avl_add(avl, box(950), box(2161));
+  avl = gpr_avl_add(avl, box(94), box(2162));
+  avl = remove_int(avl, 970);
+  avl = gpr_avl_add(avl, box(815), box(2164));
+  avl = remove_int(avl, 930);
+  avl = remove_int(avl, 703);
+  avl = gpr_avl_add(avl, box(432), box(2167));
+  avl = remove_int(avl, 544);
+  avl = gpr_avl_add(avl, box(21), box(2169));
+  avl = gpr_avl_add(avl, box(186), box(2170));
+  avl = remove_int(avl, 143);
+  avl = gpr_avl_add(avl, box(425), box(2172));
+  avl = remove_int(avl, 769);
+  avl = gpr_avl_add(avl, box(656), box(2174));
+  avl = remove_int(avl, 29);
+  avl = gpr_avl_add(avl, box(464), box(2176));
+  avl = remove_int(avl, 713);
+  avl = gpr_avl_add(avl, box(800), box(2178));
+  avl = remove_int(avl, 621);
+  avl = gpr_avl_add(avl, box(962), box(2180));
+  avl = remove_int(avl, 448);
+  avl = gpr_avl_add(avl, box(878), box(2182));
+  avl = remove_int(avl, 39);
+  avl = remove_int(avl, 999);
+  avl = gpr_avl_add(avl, box(182), box(2185));
+  avl = gpr_avl_add(avl, box(429), box(2186));
+  avl = gpr_avl_add(avl, box(598), box(2187));
+  avl = remove_int(avl, 551);
+  avl = gpr_avl_add(avl, box(827), box(2189));
+  avl = gpr_avl_add(avl, box(809), box(2190));
+  avl = remove_int(avl, 438);
+  avl = remove_int(avl, 811);
+  avl = gpr_avl_add(avl, box(808), box(2193));
+  avl = gpr_avl_add(avl, box(788), box(2194));
+  avl = remove_int(avl, 156);
+  avl = gpr_avl_add(avl, box(933), box(2196));
+  avl = gpr_avl_add(avl, box(344), box(2197));
+  avl = remove_int(avl, 460);
+  avl = gpr_avl_add(avl, box(161), box(2199));
+  avl = gpr_avl_add(avl, box(444), box(2200));
+  avl = remove_int(avl, 597);
+  avl = remove_int(avl, 668);
+  avl = gpr_avl_add(avl, box(703), box(2203));
+  avl = remove_int(avl, 515);
+  avl = gpr_avl_add(avl, box(380), box(2205));
+  avl = gpr_avl_add(avl, box(338), box(2206));
+  avl = remove_int(avl, 550);
+  avl = remove_int(avl, 946);
+  avl = remove_int(avl, 714);
+  avl = remove_int(avl, 739);
+  avl = gpr_avl_add(avl, box(413), box(2211));
+  avl = remove_int(avl, 450);
+  avl = gpr_avl_add(avl, box(411), box(2213));
+  avl = gpr_avl_add(avl, box(117), box(2214));
+  avl = gpr_avl_add(avl, box(322), box(2215));
+  avl = gpr_avl_add(avl, box(915), box(2216));
+  avl = gpr_avl_add(avl, box(410), box(2217));
+  avl = gpr_avl_add(avl, box(66), box(2218));
+  avl = remove_int(avl, 756);
+  avl = remove_int(avl, 596);
+  avl = gpr_avl_add(avl, box(882), box(2221));
+  avl = gpr_avl_add(avl, box(930), box(2222));
+  avl = gpr_avl_add(avl, box(36), box(2223));
+  avl = remove_int(avl, 742);
+  avl = gpr_avl_add(avl, box(539), box(2225));
+  avl = gpr_avl_add(avl, box(596), box(2226));
+  avl = remove_int(avl, 82);
+  avl = remove_int(avl, 686);
+  avl = remove_int(avl, 933);
+  avl = remove_int(avl, 42);
+  avl = remove_int(avl, 340);
+  avl = gpr_avl_add(avl, box(126), box(2232));
+  avl = gpr_avl_add(avl, box(493), box(2233));
+  avl = gpr_avl_add(avl, box(839), box(2234));
+  avl = remove_int(avl, 774);
+  avl = gpr_avl_add(avl, box(337), box(2236));
+  avl = remove_int(avl, 322);
+  avl = gpr_avl_add(avl, box(16), box(2238));
+  avl = remove_int(avl, 73);
+  avl = remove_int(avl, 85);
+  avl = remove_int(avl, 191);
+  avl = remove_int(avl, 541);
+  avl = gpr_avl_add(avl, box(704), box(2243));
+  avl = remove_int(avl, 767);
+  avl = remove_int(avl, 1006);
+  avl = remove_int(avl, 844);
+  avl = remove_int(avl, 742);
+  avl = gpr_avl_add(avl, box(48), box(2248));
+  avl = gpr_avl_add(avl, box(138), box(2249));
+  avl = gpr_avl_add(avl, box(437), box(2250));
+  avl = gpr_avl_add(avl, box(275), box(2251));
+  avl = remove_int(avl, 520);
+  avl = gpr_avl_add(avl, box(1019), box(2253));
+  avl = remove_int(avl, 955);
+  avl = gpr_avl_add(avl, box(270), box(2255));
+  avl = remove_int(avl, 680);
+  avl = remove_int(avl, 698);
+  avl = gpr_avl_add(avl, box(735), box(2258));
+  avl = gpr_avl_add(avl, box(400), box(2259));
+  avl = remove_int(avl, 991);
+  avl = gpr_avl_add(avl, box(263), box(2261));
+  avl = remove_int(avl, 704);
+  avl = gpr_avl_add(avl, box(757), box(2263));
+  avl = remove_int(avl, 194);
+  avl = remove_int(avl, 616);
+  avl = remove_int(avl, 784);
+  avl = gpr_avl_add(avl, box(382), box(2267));
+  avl = gpr_avl_add(avl, box(464), box(2268));
+  avl = gpr_avl_add(avl, box(817), box(2269));
+  avl = remove_int(avl, 445);
+  avl = gpr_avl_add(avl, box(412), box(2271));
+  avl = remove_int(avl, 525);
+  avl = gpr_avl_add(avl, box(299), box(2273));
+  avl = gpr_avl_add(avl, box(464), box(2274));
+  avl = gpr_avl_add(avl, box(715), box(2275));
+  avl = remove_int(avl, 58);
+  avl = remove_int(avl, 218);
+  avl = gpr_avl_add(avl, box(961), box(2278));
+  avl = gpr_avl_add(avl, box(491), box(2279));
+  avl = remove_int(avl, 846);
+  avl = gpr_avl_add(avl, box(762), box(2281));
+  avl = remove_int(avl, 974);
+  avl = remove_int(avl, 887);
+  avl = gpr_avl_add(avl, box(498), box(2284));
+  avl = remove_int(avl, 810);
+  avl = remove_int(avl, 743);
+  avl = remove_int(avl, 22);
+  avl = remove_int(avl, 284);
+  avl = gpr_avl_add(avl, box(482), box(2289));
+  avl = gpr_avl_add(avl, box(1021), box(2290));
+  avl = remove_int(avl, 155);
+  avl = remove_int(avl, 128);
+  avl = gpr_avl_add(avl, box(819), box(2293));
+  avl = gpr_avl_add(avl, box(324), box(2294));
+  avl = remove_int(avl, 196);
+  avl = remove_int(avl, 370);
+  avl = remove_int(avl, 753);
+  avl = remove_int(avl, 56);
+  avl = remove_int(avl, 735);
+  avl = gpr_avl_add(avl, box(272), box(2300));
+  avl = gpr_avl_add(avl, box(474), box(2301));
+  avl = gpr_avl_add(avl, box(719), box(2302));
+  avl = gpr_avl_add(avl, box(236), box(2303));
+  avl = remove_int(avl, 818);
+  avl = gpr_avl_add(avl, box(727), box(2305));
+  avl = remove_int(avl, 892);
+  avl = remove_int(avl, 871);
+  avl = remove_int(avl, 231);
+  avl = gpr_avl_add(avl, box(62), box(2309));
+  avl = gpr_avl_add(avl, box(953), box(2310));
+  avl = remove_int(avl, 701);
+  avl = gpr_avl_add(avl, box(193), box(2312));
+  avl = remove_int(avl, 619);
+  avl = remove_int(avl, 22);
+  avl = remove_int(avl, 804);
+  avl = remove_int(avl, 851);
+  avl = gpr_avl_add(avl, box(286), box(2317));
+  avl = gpr_avl_add(avl, box(751), box(2318));
+  avl = remove_int(avl, 525);
+  avl = gpr_avl_add(avl, box(217), box(2320));
+  avl = remove_int(avl, 336);
+  avl = gpr_avl_add(avl, box(86), box(2322));
+  avl = gpr_avl_add(avl, box(81), box(2323));
+  avl = gpr_avl_add(avl, box(850), box(2324));
+  avl = remove_int(avl, 872);
+  avl = gpr_avl_add(avl, box(402), box(2326));
+  avl = gpr_avl_add(avl, box(54), box(2327));
+  avl = gpr_avl_add(avl, box(980), box(2328));
+  avl = gpr_avl_add(avl, box(845), box(2329));
+  avl = remove_int(avl, 1004);
+  avl = remove_int(avl, 273);
+  avl = remove_int(avl, 879);
+  avl = gpr_avl_add(avl, box(354), box(2333));
+  avl = gpr_avl_add(avl, box(58), box(2334));
+  avl = gpr_avl_add(avl, box(127), box(2335));
+  avl = remove_int(avl, 84);
+  avl = gpr_avl_add(avl, box(360), box(2337));
+  avl = remove_int(avl, 648);
+  avl = remove_int(avl, 488);
+  avl = remove_int(avl, 585);
+  avl = remove_int(avl, 230);
+  avl = gpr_avl_add(avl, box(887), box(2342));
+  avl = remove_int(avl, 558);
+  avl = remove_int(avl, 958);
+  avl = gpr_avl_add(avl, box(822), box(2345));
+  avl = remove_int(avl, 1004);
+  avl = remove_int(avl, 747);
+  avl = gpr_avl_add(avl, box(631), box(2348));
+  avl = gpr_avl_add(avl, box(442), box(2349));
+  avl = remove_int(avl, 957);
+  avl = remove_int(avl, 964);
+  avl = gpr_avl_add(avl, box(10), box(2352));
+  avl = remove_int(avl, 189);
+  avl = gpr_avl_add(avl, box(742), box(2354));
+  avl = remove_int(avl, 108);
+  avl = gpr_avl_add(avl, box(1014), box(2356));
+  avl = remove_int(avl, 266);
+  avl = remove_int(avl, 623);
+  avl = remove_int(avl, 697);
+  avl = gpr_avl_add(avl, box(180), box(2360));
+  avl = remove_int(avl, 472);
+  avl = gpr_avl_add(avl, box(567), box(2362));
+  avl = remove_int(avl, 1020);
+  avl = remove_int(avl, 273);
+  avl = gpr_avl_add(avl, box(864), box(2365));
+  avl = gpr_avl_add(avl, box(1009), box(2366));
+  avl = remove_int(avl, 224);
+  avl = remove_int(avl, 81);
+  avl = gpr_avl_add(avl, box(653), box(2369));
+  avl = remove_int(avl, 67);
+  avl = remove_int(avl, 102);
+  avl = remove_int(avl, 76);
+  avl = remove_int(avl, 935);
+  avl = remove_int(avl, 169);
+  avl = remove_int(avl, 232);
+  avl = remove_int(avl, 79);
+  avl = gpr_avl_add(avl, box(509), box(2377));
+  avl = remove_int(avl, 900);
+  avl = remove_int(avl, 822);
+  avl = remove_int(avl, 945);
+  avl = remove_int(avl, 356);
+  avl = gpr_avl_add(avl, box(443), box(2382));
+  avl = gpr_avl_add(avl, box(925), box(2383));
+  avl = remove_int(avl, 994);
+  avl = remove_int(avl, 324);
+  avl = gpr_avl_add(avl, box(291), box(2386));
+  avl = remove_int(avl, 94);
+  avl = remove_int(avl, 795);
+  avl = remove_int(avl, 42);
+  avl = gpr_avl_add(avl, box(613), box(2390));
+  avl = remove_int(avl, 289);
+  avl = gpr_avl_add(avl, box(980), box(2392));
+  avl = remove_int(avl, 316);
+  avl = gpr_avl_add(avl, box(281), box(2394));
+  avl = gpr_avl_add(avl, box(1006), box(2395));
+  avl = remove_int(avl, 776);
+  avl = gpr_avl_add(avl, box(108), box(2397));
+  avl = gpr_avl_add(avl, box(918), box(2398));
+  avl = remove_int(avl, 721);
+  avl = remove_int(avl, 563);
+  avl = gpr_avl_add(avl, box(925), box(2401));
+  avl = remove_int(avl, 448);
+  avl = remove_int(avl, 198);
+  avl = remove_int(avl, 1);
+  avl = gpr_avl_add(avl, box(160), box(2405));
+  avl = remove_int(avl, 515);
+  avl = gpr_avl_add(avl, box(284), box(2407));
+  avl = gpr_avl_add(avl, box(225), box(2408));
+  avl = remove_int(avl, 304);
+  avl = gpr_avl_add(avl, box(714), box(2410));
+  avl = gpr_avl_add(avl, box(708), box(2411));
+  avl = gpr_avl_add(avl, box(624), box(2412));
+  avl = remove_int(avl, 662);
+  avl = remove_int(avl, 825);
+  avl = remove_int(avl, 383);
+  avl = remove_int(avl, 381);
+  avl = gpr_avl_add(avl, box(194), box(2417));
+  avl = remove_int(avl, 280);
+  avl = remove_int(avl, 25);
+  avl = remove_int(avl, 633);
+  avl = gpr_avl_add(avl, box(897), box(2421));
+  avl = remove_int(avl, 636);
+  avl = remove_int(avl, 596);
+  avl = remove_int(avl, 757);
+  avl = remove_int(avl, 343);
+  avl = remove_int(avl, 162);
+  avl = remove_int(avl, 913);
+  avl = remove_int(avl, 843);
+  avl = remove_int(avl, 280);
+  avl = remove_int(avl, 911);
+  avl = gpr_avl_add(avl, box(1008), box(2431));
+  avl = remove_int(avl, 948);
+  avl = remove_int(avl, 74);
+  avl = remove_int(avl, 571);
+  avl = gpr_avl_add(avl, box(486), box(2435));
+  avl = gpr_avl_add(avl, box(285), box(2436));
+  avl = remove_int(avl, 304);
+  avl = remove_int(avl, 516);
+  avl = gpr_avl_add(avl, box(758), box(2439));
+  avl = gpr_avl_add(avl, box(776), box(2440));
+  avl = remove_int(avl, 696);
+  avl = gpr_avl_add(avl, box(104), box(2442));
+  avl = gpr_avl_add(avl, box(700), box(2443));
+  avl = gpr_avl_add(avl, box(114), box(2444));
+  avl = gpr_avl_add(avl, box(567), box(2445));
+  avl = remove_int(avl, 620);
+  avl = gpr_avl_add(avl, box(270), box(2447));
+  avl = remove_int(avl, 730);
+  avl = gpr_avl_add(avl, box(749), box(2449));
+  avl = gpr_avl_add(avl, box(443), box(2450));
+  avl = remove_int(avl, 457);
+  avl = gpr_avl_add(avl, box(571), box(2452));
+  avl = gpr_avl_add(avl, box(626), box(2453));
+  avl = remove_int(avl, 638);
+  avl = remove_int(avl, 313);
+
+  gpr_avl_unref(avl);
+}
+
+static void test_stress(void) {
+  int added[1024];
+  int i, j;
+  int deletions = 0;
+  gpr_avl avl;
+
+  gpr_log(GPR_DEBUG, "test_stress");
+
+  srand((unsigned)time(NULL));
+  avl = gpr_avl_create(&int_int_vtable);
+
+  memset(added, 0, sizeof(added));
+
+  for (i = 1; deletions < 1000; i++) {
+    int idx = rand() % (int)GPR_ARRAY_SIZE(added);
+    GPR_ASSERT(i);
+    if (rand() < RAND_MAX / 2) {
+      added[idx] = i;
+      fprintf(stderr, "avl = gpr_avl_add(avl, box(%d), box(%d)); /* d=%d */\n",
+              idx, i, deletions);
+      avl = gpr_avl_add(avl, box(idx), box(i));
+    } else {
+      deletions += (added[idx] != 0);
+      added[idx] = 0;
+      fprintf(stderr, "avl = remove_int(avl, %d); /* d=%d */\n", idx,
+              deletions);
+      avl = remove_int(avl, idx);
+    }
+    for (j = 0; j < (int)GPR_ARRAY_SIZE(added); j++) {
+      if (added[j] != 0) {
+        check_get(avl, j, added[j]);
+      } else {
+        check_negget(avl, j);
+      }
+    }
+  }
+
+  gpr_avl_unref(avl);
+}
+
+int main(int argc, char *argv[]) {
+  grpc_test_init(argc, argv);
+
+  test_get();
+  test_ll();
+  test_lr();
+  test_rr();
+  test_rl();
+  test_unbalanced();
+  test_replace();
+  test_remove();
+  test_badcase1();
+  test_badcase2();
+  test_badcase3();
+  test_stress();
+
+  return 0;
+}
diff --git a/test/core/util/reconnect_server.c b/test/core/util/reconnect_server.c
index ee481ef6749..c064fb32c6e 100644
--- a/test/core/util/reconnect_server.c
+++ b/test/core/util/reconnect_server.c
@@ -113,6 +113,7 @@ void reconnect_server_init(reconnect_server *server) {
 
 void reconnect_server_start(reconnect_server *server, int port) {
   struct sockaddr_in addr;
+  grpc_tcp_listener *listener;
   int port_added;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
@@ -121,8 +122,9 @@ void reconnect_server_start(reconnect_server *server, int port) {
   memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
 
   server->tcp_server = grpc_tcp_server_create();
-  port_added =
+  listener = 
       grpc_tcp_server_add_port(server->tcp_server, &addr, sizeof(addr));
+  port_added = grpc_tcp_listener_get_port(listener);
   GPR_ASSERT(port_added == port);
 
   grpc_tcp_server_start(&exec_ctx, server->tcp_server, server->pollsets, 1,
diff --git a/test/proto/benchmarks/control.proto b/test/proto/benchmarks/control.proto
index 962bd2f8cc3..42a5dd0a859 100644
--- a/test/proto/benchmarks/control.proto
+++ b/test/proto/benchmarks/control.proto
@@ -49,7 +49,10 @@ enum RpcType {
   STREAMING = 1;
 }
 
+// Parameters of poisson process distribution, which is a good representation
+// of activity coming in from independent identical stationary sources.
 message PoissonParams {
+  // The rate of arrivals (a.k.a. lambda parameter of the exp distribution).
   double offered_load = 1;
 }
 
@@ -67,6 +70,8 @@ message ParetoParams {
   double alpha = 2;
 }
 
+// Once an RPC finishes, immediately start a new one.
+// No configuration parameters needed.
 message ClosedLoopParams {
 }
 
@@ -87,14 +92,20 @@ message SecurityParams {
 }
 
 message ClientConfig {
+  // List of targets to connect to. At least one target needs to be specified.
   repeated string server_targets = 1;
   ClientType client_type = 2;
   SecurityParams security_params = 3;
+  // How many concurrent RPCs to start for each channel.
+  // For synchronous client, use a separate thread for each outstanding RPC.
   int32 outstanding_rpcs_per_channel = 4;
+  // Number of independent client channels to create.
+  // i-th channel will connect to server_target[i % server_targets.size()]
   int32 client_channels = 5;
-  // only for async client:
+  // Only for async client. Number of threads to use to start/manage RPCs.
   int32 async_client_threads = 7;
   RpcType rpc_type = 8;
+  // The requested load for the entire client (aggregated over all the threads).
   LoadParams load_params = 10;
   PayloadConfig payload_config = 11;
   HistogramParams histogram_params = 12;
@@ -106,6 +117,7 @@ message ClientStatus {
 
 // Request current stats
 message Mark {
+  // if true, the stats will be reset after taking their snapshot.
   bool reset = 1;
 }
 
@@ -119,11 +131,13 @@ message ClientArgs {
 message ServerConfig {
   ServerType server_type = 1;
   SecurityParams security_params = 2;
+  // Host on which to listen.
   string host = 3;
+  // Port on which to listen. Zero means pick unused port.
   int32 port = 4;
-  // only for async server
+  // Only for async server. Number of threads used to serve the requests.
   int32 async_server_threads = 7;
-  // restrict core usage
+  // restrict core usage, currently unused
   int32 core_limit = 8;
   PayloadConfig payload_config = 9;
 }
@@ -137,6 +151,8 @@ message ServerArgs {
 
 message ServerStatus {
   ServerStats stats = 1;
+  // the port bound by the server
   int32 port = 2;
+  // Number of cores on the server. See gpr_cpu_num_cores.
   int32 cores = 3;
 }
diff --git a/test/proto/benchmarks/services.proto b/test/proto/benchmarks/services.proto
index 4c2cbabdf87..ff295ed9702 100644
--- a/test/proto/benchmarks/services.proto
+++ b/test/proto/benchmarks/services.proto
@@ -47,9 +47,19 @@ service BenchmarkService {
 }
 
 service WorkerService {
-  // Start server with specified workload
+  // Start server with specified workload.
+  // First request sent specifies the ServerConfig followed by ServerStatus
+  // response. After that, a "Mark" can be sent anytime to request the latest
+  // stats. Closing the stream will initiate shutdown of the test server
+  // and once the shutdown has finished, the OK status is sent to terminate
+  // this RPC.
   rpc RunServer(stream ServerArgs) returns (stream ServerStatus);
 
-  // Start client with specified workload
+  // Start client with specified workload.
+  // First request sent specifies the ClientConfig followed by ClientStatus
+  // response. After that, a "Mark" can be sent anytime to request the latest
+  // stats. Closing the stream will initiate shutdown of the test client
+  // and once the shutdown has finished, the OK status is sent to terminate
+  // this RPC.
   rpc RunClient(stream ClientArgs) returns (stream ClientStatus);
 }
diff --git a/test/proto/benchmarks/stats.proto b/test/proto/benchmarks/stats.proto
index 02ca0d0ea8c..f9d116110b0 100644
--- a/test/proto/benchmarks/stats.proto
+++ b/test/proto/benchmarks/stats.proto
@@ -32,14 +32,14 @@ syntax = "proto3";
 package grpc.testing;
 
 message ServerStats {
-  // wall clock time change since last reset
+  // wall clock time change in seconds since last reset
   double time_elapsed = 1;
 
-  // change in user time used by the server since last reset
+  // change in user time (in seconds) used by the server since last reset
   double time_user = 2;
 
-  // change in server time used by the server process and all threads since
-  // last reset
+  // change in server time (in seconds) used by the server process and all
+  // threads since last reset
   double time_system = 3;
 }
 
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index e411abf3005..3a1d097fb95 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -772,6 +772,7 @@ include/grpc/support/atm.h \
 include/grpc/support/atm_gcc_atomic.h \
 include/grpc/support/atm_gcc_sync.h \
 include/grpc/support/atm_win32.h \
+include/grpc/support/avl.h \
 include/grpc/support/cmdline.h \
 include/grpc/support/cpu.h \
 include/grpc/support/histogram.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index da65d0024e1..f4fb52b94b0 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -1053,6 +1053,7 @@ include/grpc/support/atm.h \
 include/grpc/support/atm_gcc_atomic.h \
 include/grpc/support/atm_gcc_sync.h \
 include/grpc/support/atm_win32.h \
+include/grpc/support/avl.h \
 include/grpc/support/cmdline.h \
 include/grpc/support/cpu.h \
 include/grpc/support/histogram.h \
@@ -1088,6 +1089,7 @@ src/core/support/time_precise.h \
 src/core/profiling/basic_timers.c \
 src/core/profiling/stap_timers.c \
 src/core/support/alloc.c \
+src/core/support/avl.c \
 src/core/support/cmdline.c \
 src/core/support/cpu_iphone.c \
 src/core/support/cpu_linux.c \
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 7fd7cff8d61..2d12adebbb6 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -624,10 +624,15 @@ build_configs = set(cfg.build_config for cfg in run_configs)
 if args.travis:
   _FORCE_ENVIRON_FOR_WRAPPERS = {'GRPC_TRACE': 'api'}
 
-languages = set(_LANGUAGES[l]
-                for l in itertools.chain.from_iterable(
-                      _LANGUAGES.iterkeys() if x == 'all' else [x]
-                      for x in args.language))
+if 'all' in args.language:
+  lang_list = _LANGUAGES.keys()  
+else:
+  lang_list = args.language
+# We don't support code coverage on ObjC
+if 'gcov' in args.config and 'objc' in lang_list:
+  lang_list.remove('objc')
+
+languages = set(_LANGUAGES[l] for l in lang_list)
 
 if len(build_configs) > 1:
   for language in languages:
@@ -840,6 +845,7 @@ def _calculate_num_runs_failures(list_of_results):
       num_failures += jobresult.num_failures
   return num_runs, num_failures
 
+
 def _build_and_run(
     check_cancelled, newline_on_success, cache, xml_report=None):
   """Do one pass of building & running tests."""
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index ffa50188a9e..9e9257bf5e5 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -218,6 +218,18 @@
       "tools/codegen/core/gen_legal_metadata_characters.c"
     ]
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "gpr_avl_test", 
+    "src": [
+      "test/core/support/avl_test.c"
+    ]
+  }, 
   {
     "deps": [
       "gpr", 
@@ -14175,6 +14187,7 @@
       "include/grpc/support/atm_gcc_atomic.h", 
       "include/grpc/support/atm_gcc_sync.h", 
       "include/grpc/support/atm_win32.h", 
+      "include/grpc/support/avl.h", 
       "include/grpc/support/cmdline.h", 
       "include/grpc/support/cpu.h", 
       "include/grpc/support/histogram.h", 
@@ -14216,6 +14229,7 @@
       "include/grpc/support/atm_gcc_atomic.h", 
       "include/grpc/support/atm_gcc_sync.h", 
       "include/grpc/support/atm_win32.h", 
+      "include/grpc/support/avl.h", 
       "include/grpc/support/cmdline.h", 
       "include/grpc/support/cpu.h", 
       "include/grpc/support/histogram.h", 
@@ -14242,6 +14256,7 @@
       "src/core/profiling/stap_timers.c", 
       "src/core/profiling/timers.h", 
       "src/core/support/alloc.c", 
+      "src/core/support/avl.c", 
       "src/core/support/block_annotate.h", 
       "src/core/support/cmdline.c", 
       "src/core/support/cpu_iphone.c", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 029fc5ec719..ff0bae7430d 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -207,6 +207,24 @@
       "posix"
     ]
   }, 
+  {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "gpr_avl_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
   {
     "ci_platforms": [
       "linux", 
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
index d902ba8ff7b..e7fdec449a0 100644
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@@ -732,6 +732,15 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gen_legal_metadata_characte
         	lib = "False"
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_avl_test", "vcxproj\test\gpr_avl_test\gpr_avl_test.vcxproj", "{144D8CFF-2737-A18A-DCFD-01603533D63F}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_cmdline_test", "vcxproj\test\gpr_cmdline_test\gpr_cmdline_test.vcxproj", "{10668A5D-65CD-F530-22D0-747B395B4C26}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -10592,6 +10601,22 @@ Global
 		{A635DE99-B131-CA00-2D3B-8691D60B76C2}.Release-DLL|Win32.Build.0 = Release|Win32
 		{A635DE99-B131-CA00-2D3B-8691D60B76C2}.Release-DLL|x64.ActiveCfg = Release|x64
 		{A635DE99-B131-CA00-2D3B-8691D60B76C2}.Release-DLL|x64.Build.0 = Release|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug|Win32.ActiveCfg = Debug|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug|x64.ActiveCfg = Debug|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release|Win32.ActiveCfg = Release|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release|x64.ActiveCfg = Release|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug|Win32.Build.0 = Debug|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug|x64.Build.0 = Debug|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release|Win32.Build.0 = Release|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release|x64.Build.0 = Release|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Debug-DLL|x64.Build.0 = Debug|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release-DLL|Win32.Build.0 = Release|Win32
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release-DLL|x64.ActiveCfg = Release|x64
+		{144D8CFF-2737-A18A-DCFD-01603533D63F}.Release-DLL|x64.Build.0 = Release|x64
 		{10668A5D-65CD-F530-22D0-747B395B4C26}.Debug|Win32.ActiveCfg = Debug|Win32
 		{10668A5D-65CD-F530-22D0-747B395B4C26}.Debug|x64.ActiveCfg = Debug|x64
 		{10668A5D-65CD-F530-22D0-747B395B4C26}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/vcxproj/gpr/gpr.vcxproj b/vsprojects/vcxproj/gpr/gpr.vcxproj
index fa495db07b6..b20d61d9ba4 100644
--- a/vsprojects/vcxproj/gpr/gpr.vcxproj
+++ b/vsprojects/vcxproj/gpr/gpr.vcxproj
@@ -139,6 +139,7 @@
     <ClInclude Include="..\..\..\include\grpc\support\atm_gcc_atomic.h" />
     <ClInclude Include="..\..\..\include\grpc\support\atm_gcc_sync.h" />
     <ClInclude Include="..\..\..\include\grpc\support\atm_win32.h" />
+    <ClInclude Include="..\..\..\include\grpc\support\avl.h" />
     <ClInclude Include="..\..\..\include\grpc\support\cmdline.h" />
     <ClInclude Include="..\..\..\include\grpc\support\cpu.h" />
     <ClInclude Include="..\..\..\include\grpc\support\histogram.h" />
@@ -181,6 +182,8 @@
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\support\alloc.c">
     </ClCompile>
+    <ClCompile Include="..\..\..\src\core\support\avl.c">
+    </ClCompile>
     <ClCompile Include="..\..\..\src\core\support\cmdline.c">
     </ClCompile>
     <ClCompile Include="..\..\..\src\core\support\cpu_iphone.c">
diff --git a/vsprojects/vcxproj/gpr/gpr.vcxproj.filters b/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
index ee03e454535..9ddb9c01199 100644
--- a/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
+++ b/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
@@ -10,6 +10,9 @@
     <ClCompile Include="..\..\..\src\core\support\alloc.c">
       <Filter>src\core\support</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\core\support\avl.c">
+      <Filter>src\core\support</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\src\core\support\cmdline.c">
       <Filter>src\core\support</Filter>
     </ClCompile>
@@ -138,6 +141,9 @@
     <ClInclude Include="..\..\..\include\grpc\support\atm_win32.h">
       <Filter>include\grpc\support</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\include\grpc\support\avl.h">
+      <Filter>include\grpc\support</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\..\include\grpc\support\cmdline.h">
       <Filter>include\grpc\support</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/gpr_avl_test/gpr_avl_test.vcxproj b/vsprojects/vcxproj/test/gpr_avl_test/gpr_avl_test.vcxproj
new file mode 100644
index 00000000000..9703733235b
--- /dev/null
+++ b/vsprojects/vcxproj/test/gpr_avl_test/gpr_avl_test.vcxproj
@@ -0,0 +1,178 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\..\..\vsprojects\packages\grpc.dependencies.openssl.1.0.2.3\build\native\grpc.dependencies.openssl.props" Condition="Exists('..\..\..\..\vsprojects\packages\grpc.dependencies.openssl.1.0.2.3\build\native\1.0.2.3.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{144D8CFF-2737-A18A-DCFD-01603533D63F}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
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diff --git a/vsprojects/vcxproj/test/gpr_avl_test/gpr_avl_test.vcxproj.filters b/vsprojects/vcxproj/test/gpr_avl_test/gpr_avl_test.vcxproj.filters
new file mode 100644
index 00000000000..bccfdfdff1e
--- /dev/null
+++ b/vsprojects/vcxproj/test/gpr_avl_test/gpr_avl_test.vcxproj.filters
@@ -0,0 +1,21 @@
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