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// RUN: %boogie -noinfer %s > %t
// RUN: %diff %s.expect %t
const a:bool;
const b:bool;
const c:bool;
const d:bool;
function f(int) returns (bool);
axiom (forall x:int :: f(x) <== x >= 0);
procedure P() {
assert (a ==> (b ==> c) ==> d) == (d <== (c <== b) <== a);
assert (a ==> b ==> c) == (c <== (a ==> b)); // error
assert f(23);
assert f(-5); // error
}
procedure Q0(x: int) {
assert x == 2; // error
assert x == 2; // nothing reported for this line, since control cannot reach here
}
procedure Q1(x: int) {
assert {:subsumption 0} x == 2; // error
assert x == 2; // error (because the subsumption attribute above makes the execution 'forget' the condition)
}
procedure Q2(x: int) {
assert x == 2; // error
assert {:subsumption 0} x == 2; // nothing reported for this line, since control cannot reach here
}
procedure Q3(x: int) {
assert {:subsumption 0} x == 2; // error
assert {:subsumption 0} x == 2; // error (because the subsumption attribute above makes the execution 'forget' the condition)
}
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