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function Average (a: int, b: int): int
{
(a + b) / 2
}
method TripleConditions(x: int) returns (r: int)
ensures r == 3 * x
r := 3 * x;
assert r == 3 * x;
method Triple' (x: int) returns (r: int)
ensures Average(r, 3 * x) == 3 * x
r:= 3 * x;
method ProveSpecificationsEquivalent(x: int) {
var result1 := TripleConditions(x);
var result2 := Triple'(x);
assert result1 == result2;
