.
Thread 2 (LWP 6708):
#0  0x00007fd09957af7d in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 6704):
#0  0x00007fd095bbe5e4 in ?? ()
No symbol table info available.
#1  0x0000000002c9e710 in ?? ()
No symbol table info available.
#2  0x00007fff6f9a8e68 in ?? ()
No symbol table info available.
#3  0x0000000002893a80 in ?? ()
No symbol table info available.
#4  0x00007fd0a3a66c75 in ?? ()
No symbol table info available.
#5  0x0000000002d75200 in ?? ()
No symbol table info available.
#6  0x00007fd06b2daf88 in ?? ()
No symbol table info available.
#7  0x00007fd06b2c53c8 in ?? ()
No symbol table info available.
#8  0x0000000002ba3bf0 in ?? ()
No symbol table info available.
#9  0x00007fd06b2c53c2 in ?? ()
No symbol table info available.
#10 0x0000000002d05c39 in ?? ()
No symbol table info available.
#11 0x0000019502ba3bf0 in ?? ()
No symbol table info available.
#12 0x00007fd000000002 in ?? ()
No symbol table info available.
#13 0x00000002000000b8 in ?? ()
No symbol table info available.
#14 0x0000000000000000 in ?? ()
No symbol table info available.