user: What would the C source look like for the assembly code provided here?

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x88,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  mov    $0x0,%eax
  call   <__VERIFIER_nondet_uint@plt>
  mov    %eax,-0x6c(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  sub    $0x1,%rax
  mov    %rax,-0x68(%rbp)
  mov    %edx,%eax
  mov    %rax,-0x80(%rbp)
  movq   $0x0,-0x78(%rbp)
  mov    %edx,%eax
  mov    %rax,-0x90(%rbp)
  movq   $0x0,-0x88(%rbp)
  mov    %edx,%eax
  lea    0x0(,%rax,4),%rdx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%edi
  mov    $0x0,%edx
  div    %rdi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L52:
  cmp    %rdx,%rsp
  je     L128
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L52
L128:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L65
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L65:
  mov    %rsp,%rax
  add    $0x3,%rax
  shr    $0x2,%rax
  shl    $0x2,%rax
  mov    %rax,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  mov    %eax,%edx
  sub    $0x1,%rdx
  mov    %rdx,-0x58(%rbp)
  mov    %eax,%edx
  mov    %rdx,-0xa0(%rbp)
  movq   $0x0,-0x98(%rbp)
  mov    %eax,%edx
  mov    %rdx,-0xb0(%rbp)
  movq   $0x0,-0xa8(%rbp)
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%esi
  mov    $0x0,%edx
  div    %rsi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L85:
  cmp    %rdx,%rsp
  je     L171
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L85
L171:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L142
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L142:
  mov    %rsp,%rax
  add    $0x3,%rax
  shr    $0x2,%rax
  shl    $0x2,%rax
  mov    %rax,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  mov    %eax,%edx
  sub    $0x1,%rdx
  mov    %rdx,-0x48(%rbp)
  mov    %eax,%edx
  mov    %rdx,%r14
  mov    $0x0,%r15d
  mov    %eax,%edx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%edi
  mov    $0x0,%edx
  div    %rdi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L113:
  cmp    %rdx,%rsp
  je     L42
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L113
L42:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L104
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L104:
  mov    %rsp,%rax
  add    $0x3,%rax
  shr    $0x2,%rax
  shl    $0x2,%rax
  mov    %rax,-0x40(%rbp)
  movl   $0x0,-0x70(%rbp)
  jmp    L92
L6:
  mov    $0x0,%eax
  call   <__VERIFIER_nondet_int@plt>
  mov    -0x60(%rbp),%rdx
  mov    -0x70(%rbp),%ecx
  mov    %eax,(%rdx,%rcx,4)
  addl   $0x1,-0x70(%rbp)
L92:
  mov    -0x70(%rbp),%eax
  cmp    -0x6c(%rbp),%eax
  jb     L6
  movl   $0x0,-0x70(%rbp)
  jmp    L170
L130:
  mov    $0x0,%eax
  call   <__VERIFIER_nondet_int@plt>
  mov    -0x50(%rbp),%rdx
  mov    -0x70(%rbp),%ecx
  mov    %eax,(%rdx,%rcx,4)
  addl   $0x1,-0x70(%rbp)
L170:
  mov    -0x70(%rbp),%eax
  cmp    -0x6c(%rbp),%eax
  jb     L130
  movl   $0x0,-0x70(%rbp)
  jmp    L13
L20:
  mov    -0x60(%rbp),%rax
  mov    -0x70(%rbp),%edx
  mov    (%rax,%rdx,4),%ecx
  mov    -0x50(%rbp),%rax
  mov    -0x70(%rbp),%edx
  mov    (%rax,%rdx,4),%eax
  add    %eax,%ecx
  mov    -0x40(%rbp),%rax
  mov    -0x70(%rbp),%edx
  mov    %ecx,(%rax,%rdx,4)
  addl   $0x1,-0x70(%rbp)
L13:
  mov    -0x70(%rbp),%eax
  cmp    -0x6c(%rbp),%eax
  jb     L20
  movl   $0x0,-0x70(%rbp)
  jmp    L140
L112:
  mov    -0x40(%rbp),%rax
  mov    -0x70(%rbp),%edx
  mov    (%rax,%rdx,4),%ecx
  mov    -0x60(%rbp),%rax
  mov    -0x70(%rbp),%edx
  mov    (%rax,%rdx,4),%esi
  mov    -0x50(%rbp),%rax
  mov    -0x70(%rbp),%edx
  mov    (%rax,%rdx,4),%edx
  mov    %esi,%eax
  sub    %edx,%eax
  cmp    %eax,%ecx
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__VERIFIER_assert@plt>
  addl   $0x1,-0x70(%rbp)
L140:
  mov    -0x70(%rbp),%eax
  cmp    -0x6c(%rbp),%eax
  jb     L112
  mov    %rbx,%rsp
  mov    $0x0,%eax
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L31
  call   <__stack_chk_fail@plt>
L31:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

assistant: ```c
int main() {
  unsigned int M = __VERIFIER_nondet_uint();
  int A[M], B[M], C[M];
  unsigned int i;
  for (i = 0; i < M; i++)
    A[i] = __VERIFIER_nondet_int();
  for (i = 0; i < M; i++)
    B[i] = __VERIFIER_nondet_int();
  for (i = 0; i < M; i++)
    C[i] = A[i] + B[i];
  for (i = 0; i < M; i++)
    __VERIFIER_assert(C[i] == A[i] - B[i]);
}
```