user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    $0xb,%r13d
  mov    $0x1,%r12d
  lea    D41(%rip),%r15
  jmp    L10
L69:
  lea    D21(%rip),%rdi
  call   <puts@plt>
  mov    $0x2,%edi
  call   <exit@plt>
  jmp    L76
L38:
  mov    %rbx,%rdx
  mov    %rbp,%rsi
  lea    D0(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x2,%edi
  call   <exit@plt>
  jmp    L117
L4:
  mov    %r14,%rdx
  mov    %rbx,%rsi
  lea    D24(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L117:
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    0x9(%r12),%esi
  cmp    %esi,%eax
  jg     L83
  movslq %eax,%rcx
  lea    (%rbx,%rcx,1),%rdx
  lea    0x1(%rbx,%rcx,1),%rcx
  sub    %eax,%esi
  add    %rsi,%rcx
  mov    $0x0,%eax
L67:
  cmpb   $0x1,(%rdx)
  adc    $0x0,%eax
  add    $0x1,%rdx
  cmp    %rcx,%rdx
  jne    L67
  cmp    $0xa,%eax
  jne    L83
L82:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  add    $0x7d0,%r12d
  add    $0x7d0,%r13
  cmp    $0xc351,%r12d
  je     L3
L10:
  mov    %r13d,%r14d
  mov    %r13d,%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  je     L69
L76:
  mov    %r12d,%edi
  call   <random_string@plt>
  mov    %rax,%rbp
  mov    %r14d,%edx
  mov    %rax,%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rax,%r14
  movb   $0x0,(%rbx,%r13,1)
  mov    %rbx,%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L38
  cmp    %r14,%rbx
  jne    L4
  jmp    L117
L83:
  mov    %r15,%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L82
L3:
  lea    D44(%rip),%rdi
  call   <puts@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  mov    $0x0,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: disassemble_data
arguments: label: D41
type_infered: string
name: disassemble_data
arguments: label: D21
type_infered: string
name: disassemble_data
arguments: label: D0
type_infered: string
name: disassemble_data
arguments: label: D24
type_infered: string
name: disassemble_data
arguments: label: D44
type_infered: string

tool: D41: strncpy/2-1.c Test Failed, The difference in the number of bytes for two strings (s1 and s2) have not been appended with NULL bytes

tool: D21: strncpy/2-1.c Failed to allocate memory

tool: D0: strncpy/2-1.c Test failed, string copy failed. Expected string: %s, But got: %s


tool: D24: strncpy/2-1.c Test Failed, return is not as expected. Expected return: %p, But obtained: %p


tool: D44: strncpy/2-1.c  Test Passed, The difference in the number of bytes for two strings (s1 and s2) have been appended with NULL bytes in s2

assistant: ```c
int main(void) {
  int i, j, c;
  char *ret_str;
  for (i = 1; i < 50000; i += 2000) {
    c = 0;
    char *sample_str_1;
    char *sample_str_2 = malloc(i + 10);
    if (sample_str_2 == NULL) {
      printf("strncpy/2-1.c"
             " Failed to allocate memory\n");
      exit(2);
    }
    sample_str_1 = random_string(i);
    ret_str = strncpy(sample_str_2, sample_str_1, i + 10);
    sample_str_2[i + 10] = '\0';
    if (strcmp(sample_str_1, sample_str_2) != 0) {
      printf("strncpy/2-1.c"
             " Test failed, string copy failed. "
             "Expected string: %s, But got: %s\n",
             sample_str_1, sample_str_2);
      exit(2);
    } else if (ret_str != sample_str_2) {
      printf("strncpy/2-1.c"
             " Test Failed, return is not as expected. "
             "Expected return: %p, But obtained: %p\n",
             sample_str_2, ret_str);
      exit(1);
    }
    for (j = strlen(sample_str_1); j < i + 10; j++) {
      if (sample_str_2[j] == '\0') {
        c++;
      }
    }
    if (c != 10) {
      printf("strncpy/2-1.c"
             " Test Failed, The difference in the number of bytes"
             " for two strings (s1 and s2) have not been appended"
             " with NULL bytes\n");
      exit(1);
    }
    free(sample_str_1);
    free(sample_str_2);
  }
  printf("strncpy/2-1.c"
         "  Test Passed, The difference in the number of bytes for two "
         "strings (s1 and s2) have been appended with NULL bytes in s2\n");
  exit(0);
}
```