#0  0x00007fd3b9e3e7eb in raise () from /lib/libpthread.so.0
No symbol table info available.
#1  0x00007fd3b04c46c0 in ?? ()
No symbol table info available.
#2  0x0000000000000400 in ?? ()
No symbol table info available.
#3  0x0000000000000000 in ?? ()
No symbol table info available.