.
Thread 4 (Thread 0x7f8bb0e33780 (LWP 1047)):
#0  0x00007f8badc9fab3 in select () at ../sysdeps/unix/syscall-template.S:82
No locals.
#1  0x00007f8bb0f720d0 in ?? ()
No symbol table info available.
#2  0x00007f8bb0edcc2f in main ()
No symbol table info available.
.
Thread 3 (Thread 0x7f8b5e8c0700 (LWP 1057)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
No locals.
#1  0x00007f8bb0f7d1c6 in ?? ()
No symbol table info available.
#2  0x00007f8badf78e9a in start_thread (arg=0x7f8b5e8c0700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f8b5e8c0700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3517395481018648947, 140237955371296, 140236563417536, 0, 3, 3474824418066282125, 3474782874456143501}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#3  0x00007f8badca674d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f8ba5061700 (LWP 1050)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
No locals.
#1  0x00007f8bb0f7d1c6 in ?? ()
No symbol table info available.
#2  0x00007f8badf78e9a in start_thread (arg=0x7f8ba5061700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f8ba5061700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3517395481018648947, 140237955371296, 140237745822144, 0, 3, 3474801433011926669, 3474782874456143501}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#3  0x00007f8badca674d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f8ba6c91700 (LWP 1049)):
#0  0x00007f8badbec445 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 1049
#1  0x00007f8badbefbab in __GI_abort () at abort.c:91
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, sa_mask = {__val = {18446735827458073232, 18446735277639033232, 18446735964868325376, 18446735277639025744, 4294967040, 18446735277638924464, 140234977181826, 45, 206158430253, 140234977181779, 140234977181741, 45, 140234977181741, 45, 0, 0}}, sa_flags = 1, sa_restorer = 0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f8bb0fe91fa in ?? ()
No symbol table info available.
#3  0x00007f8bb1008865 in ?? ()
No symbol table info available.
#4  0x00007f8bb1008930 in ?? ()
No symbol table info available.
#5  0x00007f8bb10144c8 in ?? ()
No symbol table info available.
#6  0x00007f8bb10147de in ?? ()
No symbol table info available.
#7  0x00007f8bb10425c2 in ?? ()
No symbol table info available.
#8  0x00007f8bb104298c in ?? ()
No symbol table info available.
#9  0x00007f8bb1012e21 in ?? ()
No symbol table info available.
#10 0x00007f8bb10141a2 in ?? ()
No symbol table info available.
#11 0x00007f8bb100abfd in ?? ()
No symbol table info available.
#12 0x00007f8bb0fe8a61 in ?? ()
No symbol table info available.
#13 0x00007f8badf78e9a in start_thread (arg=0x7f8ba6c91700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f8ba6c91700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3517395481018648947, 140237895903360, 140237775378880, 0, 3, 3474807351476860557, 3474782874456143501}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#14 0x00007f8badca674d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#15 0x0000000000000000 in ?? ()
No symbol table info available.