// verifast_options{disable_overflow_check target:ILP32}
extern void abort(void);
//@ requires true;
//@ ensures true;


void reach_error()
//@ requires false;
//@ ensures true;
{}
void assume_abort_if_not(int cond) 
//@ requires true;
//@ ensures true;
{  if(!cond) {abort();}
}
void __VERIFIER_assert(int cond) 
//@ requires (1 <= cond);
//@ ensures (1 <= cond);
{  if (!(cond)) {
    ERROR: {reach_error();abort();}
  }
  return;
}


extern char __VERIFIER_nondet_char();
//@ requires true;
//@ ensures true;

int main()

//@ requires module(string_1__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 

  char string_A[5], string_B[5];
  int i, j, nc_A, nc_B, found=0;

  for(i=0; i<5; i++)
    string_A[i]=__VERIFIER_nondet_char();
  if (!(string_A[5 -1]=='\0')) return 0;

  for(i=0; i<5; i++)
    string_B[i]=__VERIFIER_nondet_char();
  if (!(string_B[5 -1]=='\0')) return 0;

  nc_A = 0;
  while(string_A[nc_A]!='\0')
    nc_A++;

  nc_B = 0;
  while(string_B[nc_B]!='\0')
    nc_B++;

  if (!(nc_B >= nc_A)) return 0;


  i=j=0;
  while((i<nc_A) && (j<nc_B))
  {
    if(string_A[i] == string_B[j])
    {
       i++;
       j++;
    }
    else
    {
       i = i-j+1;
       j = 0;
    }
  }

  found = (j>nc_B-1);

  __VERIFIER_assert(found == 0 || found == 1);

  return 0;
}