source: CIVL/examples/focus/sv-benchmarks-main-c-array-industry-pattern/c/array-industry-pattern/array_monotonic.c

/* Verified with mods:
 * for loop step size of 2 changed to step of 1
 */
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#pragma CIVL ACSL
$input int N;
$assume(0 < N);

int __VERIFIER_nondet_int() {
  int x;
  $havoc(&x);
  return x;
}
int main()
{
        int i;
        int a[N];
        int b[N];

  // modified:
  //@ focus I;
  for(i = 0; i < N; i++)
        {
                a[i] = __VERIFIER_nondet_int();
                if(a[i] == 10)
                        b[i] = 20;
        }
  /* original:
        for(i = 0; i < N;  i = i + 2)
        {
                a[i] = __VERIFIER_nondet_int();
                if(a[i] == 10)
                        b[i] = 20;
        }
  */

  // modified:
  //@ focus I;
  $assert($forall(int i:0..N-1) a[i] == 10 => b[i] == 20);
  /* original:
        for(i = 0; i < N; i = i + 2)
        {
                if(a[i] == 10)
                        $assert(b[i] == 20);
        }
  */
}