Wrong location in `Invalid pointer dereference` warning

[karoliineh]

For regression tests 28 78 and 28 79 there are warnings:

[Warning][Unknown] lval (& s)->datum points to a non-local variable. Invalid pointer dereference may occur (lib/sv-comp/stub/src/sv-comp.c:22:129-22:139)
[Warning][Unknown] lval (& s)->mutex points to a non-local variable. Invalid pointer dereference may occur (lib/sv-comp/stub/src/sv-comp.c:22:129-22:139)

The warning location, line 22 in sv-comp.c is just a macro definition __VERIFIER_nondet(int), and in the tests, (&s->mutex) does not have anything to do with __VERIFIER_nondet(int):

int main () {
  pthread_mutex_init(&A.mutex, NULL);
  pthread_mutex_init(&B.mutex, NULL);

  int x = __VERIFIER_nondet_int();

  // struct s *s = malloc(sizeof(struct s));
  struct s *s;
  //struct q *q;
  int *d;

  pthread_mutex_t *m;

  if (x) {
	  s = &A;
	  x++;
  } else {
	  s = &B;
	  x++;
  }

  //q = &s->inside;
  m = &s->mutex;
  d = &s->datum;

  create_threads(t);

  pthread_mutex_lock(m);
  access_or_assert_racefree(*d); // UNKNOWN
  pthread_mutex_unlock(m);

  join_threads(t);
  return 0;
}