.
Thread 1 (Thread 0x7f2a2ddba780 (LWP 8824)):
#0  0x0000000000407a58 in ?? ()
No symbol table info available.
#1  0x0000000000409b97 in ?? ()
No symbol table info available.
#2  0x00000000004038a1 in ?? ()
No symbol table info available.
#3  0x00007f2a2b1f0ec5 in __libc_start_main (main=0x4032c0, argc=1, argv=0x7fffc915fbe8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc915fbd8) at libc-start.c:287
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -2642355140324280067, 4210341, 140736567049184, 0, 0, 2642458305559738621, 2666168096350353661}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x409c10, 0x7fffc915fbe8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4234256}}}
        not_first_call = <optimized out>
#4  0x0000000000403ece in ?? ()
No symbol table info available.