Error: segmentation violation
   rax 0000000000000000, rbx 00000000013dc140, rcx ffffffffffffffff
   rdx 00000000000084e5, rsp 00007ffde0644ab8, rbp 00007ffde0644ae0
   rsi 000000000000000b, rdi 00000000000084e5, r8  00007f9c91b9b740
   r9  0000000000000000, r10 00007ffde0644520, r11 0000000000000206
   r12 00007ffde0644fe0, r13 000000000238f520, r14 00000000013c5630
   r15 00007f9c80e9da40
  --- traceback not available