user: 下面的汇编指令对应的C源代码是什么:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x48,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x28(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  movl   $0x5,-0x4c(%rbp)
  mov    -0x4c(%rbp),%eax
  mov    %eax,%edx
  sub    $0x1,%rdx
  mov    %rdx,-0x48(%rbp)
  mov    %eax,%edx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  mov    %eax,%edx
  mov    %rdx,%r10
  mov    $0x0,%r11d
  mov    %eax,%edx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%ecx
  mov    $0x0,%edx
  div    %rcx
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L5:
  cmp    %rdx,%rsp
  je     L88
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L5
L88:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L97
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L97:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x4c(%rbp),%eax
  mov    %eax,%edx
  sub    $0x1,%rdx
  mov    %rdx,-0x38(%rbp)
  mov    %eax,%edx
  mov    %rdx,%r8
  mov    $0x0,%r9d
  mov    %eax,%edx
  mov    %rdx,%rsi
  mov    $0x0,%edi
  mov    %eax,%edx
  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
L32:
  cmp    %rdx,%rsp
  je     L39
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L32
L39:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L82
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L82:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x30(%rbp)
  movl   $0x0,-0x54(%rbp)
  jmp    L22
L103:
  mov    $0x0,%eax
  call   <__VERIFIER_nondet_char@plt>
  mov    -0x40(%rbp),%rcx
  mov    -0x54(%rbp),%edx
  movslq %edx,%rdx
  mov    %al,(%rcx,%rdx,1)
  addl   $0x1,-0x54(%rbp)
L22:
  mov    -0x54(%rbp),%eax
  cmp    %eax,-0x4c(%rbp)
  ja     L103
  mov    -0x4c(%rbp),%eax
  lea    -0x1(%rax),%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%edx
  movb   $0x0,(%rax,%rdx,1)
  movl   $0x0,-0x50(%rbp)
  mov    -0x4c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x54(%rbp)
  jmp    L107
L121:
  mov    -0x40(%rbp),%rdx
  mov    -0x54(%rbp),%eax
  cltq
  movzbl (%rdx,%rax,1),%ecx
  mov    -0x30(%rbp),%rdx
  mov    -0x50(%rbp),%eax
  cltq
  mov    %cl,(%rdx,%rax,1)
  addl   $0x1,-0x50(%rbp)
  subl   $0x1,-0x54(%rbp)
L107:
  cmpl   $0x0,-0x54(%rbp)
  jns    L121
  mov    -0x4c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x50(%rbp)
  movl   $0x0,-0x54(%rbp)
  jmp    L90
L48:
  mov    -0x40(%rbp),%rdx
  mov    -0x54(%rbp),%eax
  cltq
  movzbl (%rdx,%rax,1),%ecx
  mov    -0x30(%rbp),%rdx
  mov    -0x50(%rbp),%eax
  cltq
  movzbl (%rdx,%rax,1),%eax
  cmp    %al,%cl
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__VERIFIER_assert@plt>
  subl   $0x1,-0x50(%rbp)
  addl   $0x1,-0x54(%rbp)
L90:
  mov    -0x54(%rbp),%eax
  cmp    %eax,-0x4c(%rbp)
  ja     L48
  mov    %rbx,%rsp
  mov    $0x0,%eax
  mov    -0x28(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L25
  call   <__stack_chk_fail@plt>
L25:
  lea    -0x18(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
```

assistant: ```c
int main() {
  unsigned int max = 5;
  char str1[max], str2[max];
  int i, j;
  for (i = 0; i < max; i++) {
    str1[i] = __VERIFIER_nondet_char();
  }
  str1[max - 1] = '\0';
  j = 0;
  for (i = max - 1; i >= 0; i--) {
    str2[j] = str1[i];
    j++;
  }
  j = max - 1;
  for (i = 0; i < max; i++) {
    __VERIFIER_assert(str1[i] == str2[j]);
    j--;
  }
}
```