[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Warning: saw at least one non-ip packet
TCP packet 13: reserved bits are not all zero.  
	Further warnings disabled, use '-w' for more info

Program received signal SIGSEGV, Segmentation fault.
0x0000000000426102 in RemoveOldConns (conn_list_head=0x6cc900 <closed_conn_list_head>, conn_list_tail=0x6cc8f8 <closed_conn_list_tail>, expire_interval=480, num_conn_check=1 '\001', conn_count=0x6cc8f4 <closed_conn_count>) at trace.c:1215
1215	  if (((*conn_list_head)->ptp->last_time.tv_sec != 0) &&
#0  0x0000000000426102 in RemoveOldConns (conn_list_head=0x6cc900 <closed_conn_list_head>, conn_list_tail=0x6cc8f8 <closed_conn_list_tail>, expire_interval=480, num_conn_check=1 '\001', conn_count=0x6cc8f4 <closed_conn_count>) at trace.c:1215
#1  0x0000000000422f7a in UpdateConnLists (tcp_ptr=0x6fa1c0, ptcp=0x6e7cf4) at trace.c:1101
#2  0x0000000000420bdf in dotrace (pip=0x6e7ce0, ptcp=0x6e7cf4, plast=0x6e7d1b) at trace.c:2469
#3  0x0000000000417b7e in ProcessFile (filename=0x7fffffffe223 "input") at tcptrace.c:1167
#4  0x00000000004158ea in main (argc=4, argv=0x7fffffffde88) at tcptrace.c:785