#include<mem.cvh>

int test1() {
  int x,y,z;
  int p;

  x = 0, y = 0, z = 0;
  $havoc(&p);
  $read_set_push();

  p ? x : y;

  $mem m = $read_set_pop();

  $assert($mem_contains(m, &p));
  $assert($mem_contains(m, &x) || $mem_contains(m, &y));  
}

int test2() {
  int x,y,z;
  int p;

  x = 0, y = 0, z = 0;
  $havoc(&p);
  $read_set_push();

  if (p)
    x;
  else
    y;

  $mem m = $read_set_pop();

  $assert($mem_contains(m, &p));
  $assert($mem_contains(m, &x) || $mem_contains(m, &y));    
}

int test3() {
  int x,y,z;
  int p;

  x = 0, y = 0, z = 0;
  $havoc(&p);
  $read_set_push();

  do {
    x;
  } while (p);
  y;
  $mem m = $read_set_pop();
  $mem oracle = ($mem)&x;

  oracle = $mem_union(oracle, ($mem)&y);
  oracle = $mem_union(oracle, ($mem)&p);
  $assert($mem_equals(m, oracle));
}

int test4() {
  int x,y,z;
  int p;

  x = 0, y = 0, z = 0;
  $havoc(&p);
  $read_set_push();

  switch(p) {
  case 1:
    x;
    break;  
  case 2:
    y;
    break;  
  default:
    z;
    break;
  } 

  $mem m = $read_set_pop();

  $assert($mem_contains(m, &p));
  $assert($mem_contains(m, &x) || $mem_contains(m, &y) ||
	  $mem_contains(m, &z));
}

int main() {
    test1();
    test2();
    test3();
}