int x, y;
int ai[];
int bi[];
typedef struct _ts { int a; int b; } tst;
tst ts;
tst *tstp ;

int f (int i[], int *j) int ai[]; int x, y; tst ts; tst* tstp; 
{
  let elt be ai[6];
  modifies elt, x, ai[3], ai[3+6], ai[x'], ts.a, tstp'->a, ts;
  ensures true;
}

int g (int a[], int *p) int x, y;
{
   modifies x, y;
   ensures true;
}