Error: segmentation violation
   rax 0000000000000000, rbx 00000000013dc140, rcx ffffffffffffffff
   rdx 00000000000085e4, rsp 00007ffff6e6ce58, rbp 00007ffff6e6ce80
   rsi 000000000000000b, rdi 00000000000085e4, r8  00007f55a0be6740
   r9  0000000000000000, r10 00007ffff6e6c8e0, r11 0000000000000202
   r12 00007ffff6e6d380, r13 000000000238f520, r14 00000000013c5630
   r15 00007f558ff016e0
  --- traceback not available