user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  call   <__VERIFIER_nondet_uint@plt>
  mov    %rsp,%rcx
  mov    %eax,%r14d
  mov    %eax,-0x4c(%rbp)
  lea    0xf(,%r14,4),%rdx
  mov    %rdx,%rax
  shr    $0x4,%rax
  shl    $0x4,%rax
  mov    %rax,%rsi
  and    $0xfffffffffffff000,%rsi
  sub    %rsi,%rcx
  cmp    %rcx,%rsp
  je     L82
L100:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L100
L82:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L180
L174:
  mov    %rdx,%rax
  mov    %rsp,%rcx
  mov    %rsp,%rbx
  shr    $0x4,%rax
  shl    $0x4,%rax
  mov    %rax,%rsi
  and    $0xfffffffffffff000,%rsi
  sub    %rsi,%rcx
L146:
  cmp    %rcx,%rsp
  je     L29
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L146
L180:
  orq    $0x0,-0x8(%rsp,%rax,1)
  jmp    L174
L29:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L64
L9:
  shr    $0x4,%rdx
  mov    %rsp,%rax
  mov    %rsp,%r12
  shl    $0x4,%rdx
  mov    %rdx,%rcx
  and    $0xfffffffffffff000,%rcx
  sub    %rcx,%rax
L152:
  cmp    %rax,%rsp
  je     L178
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L152
L64:
  orq    $0x0,-0x8(%rsp,%rax,1)
  jmp    L9
L178:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  je     L41
  orq    $0x0,-0x8(%rsp,%rdx,1)
L41:
  mov    -0x4c(%rbp),%eax
  mov    %rsp,%r13
  test   %eax,%eax
  je     L130
  sub    $0x1,%eax
  mov    %rbx,%r15
  mov    %eax,-0x50(%rbp)
  shl    $0x2,%rax
  mov    %rax,-0x58(%rbp)
  lea    0x4(%rbx,%rax,1),%rax
  mov    %rax,-0x48(%rbp)
  nopl   0x0(%rax)
L36:
  xor    %eax,%eax
  add    $0x4,%r15
  call   <__VERIFIER_nondet_int@plt>
  mov    %eax,-0x4(%r15)
  cmp    %r15,-0x48(%rbp)
  jne    L36
  mov    -0x58(%rbp),%rax
  mov    %r12,%r15
  lea    0x4(%r12,%rax,1),%rax
  mov    %rax,-0x48(%rbp)
  nopl   (%rax)
L76:
  xor    %eax,%eax
  add    $0x4,%r15
  call   <__VERIFIER_nondet_int@plt>
  mov    %eax,-0x4(%r15)
  cmp    %r15,-0x48(%rbp)
  jne    L76
  cmpl   $0x2,-0x50(%rbp)
  jbe    L116
  mov    -0x4c(%rbp),%edx
  xor    %eax,%eax
  shr    $0x2,%edx
  shl    $0x4,%rdx
  nopl   0x0(%rax,%rax,1)
L187:
  movdqu (%rbx,%rax,1),%xmm0
  movdqu (%r12,%rax,1),%xmm2
  paddd  %xmm2,%xmm0
  movups %xmm0,0x0(%r13,%rax,1)
  add    $0x10,%rax
  cmp    %rdx,%rax
  jne    L187
  mov    -0x4c(%rbp),%esi
  mov    %esi,%eax
  and    $0xfffffffc,%eax
  and    $0x3,%esi
  je     L11
L211:
  mov    -0x4c(%rbp),%edx
  sub    %eax,%edx
  cmp    $0x1,%edx
  je     L122
  mov    %eax,%ecx
  movq   (%rbx,%rcx,4),%xmm0
  movq   (%r12,%rcx,4),%xmm1
  paddd  %xmm1,%xmm0
  movq   %xmm0,0x0(%r13,%rcx,4)
  mov    %edx,%ecx
  and    $0xfffffffe,%ecx
  add    %ecx,%eax
  cmp    %ecx,%edx
  je     L11
L122:
  mov    (%r12,%rax,4),%edx
  add    (%rbx,%rax,4),%edx
  mov    %edx,0x0(%r13,%rax,4)
L11:
  xor    %r15d,%r15d
  nop
L163:
  mov    (%rbx,%r15,4),%eax
  xor    %edi,%edi
  sub    (%r12,%r15,4),%eax
  cmp    0x0(%r13,%r15,4),%eax
  sete   %dil
  add    $0x1,%r15
  call   <__VERIFIER_assert@plt>
  cmp    %r14,%r15
  jne    L163
L130:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L6
  lea    -0x28(%rbp),%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L116:
  xor    %eax,%eax
  jmp    L211
L6:
  call   <__stack_chk_fail@plt>
```

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]);
}
```