blob: 9895d633c0c054b2b18b78e92f7313dfe835dcbb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
const {:existential true} b1:bool;
const {:existential true} b2:bool;
const {:existential true} b3:bool;
const {:existential true} b4:bool;
var array:[int]int;
procedure foo (i:int)
requires b2 ==> i > 0;
ensures b3 ==> array[i] > 0;
modifies array;
ensures (forall x:int :: {array[x]} x == i || array[x] == old(array)[x]);
{
array[i] := 2 * i;
}
procedure bar (j:int) returns (result:int)
requires b4 ==> j > 0;
modifies array;
ensures (forall x:int :: {array[x]} (b1 && x == j) || array[x] == old(array)[x]);
{
call foo(j);
result := array[j];
}
// expected outcome: Correct
// expected assignment: b1->True,b2->True,b3->True,b4->True
|
