def test_call_non_terminating_5() -> None:
Requires(MustTerminate(2))
a = [1, 2, 3]
for elem in a:
Invariant(MustTerminate(len(a) - len(Previous(elem))))
#:: ExpectedOutput(leak_check.failed:caller.has_unsatisfied_obligations)
non_terminating()
def test_terminate_promise_4(a: List[int], b: List[int]) -> None:
Requires(MustTerminate(2))
Requires(Acc(list_pred(a)))
Requires(Acc(list_pred(b)))
for i in a:
Invariant(MustTerminate(len(a) - len(Previous(i))))
Invariant(Acc(list_pred(b)))
#:: ExpectedOutput(leak_check.failed:loop_context.has_unsatisfied_obligations)
for j in b:
pass
def test_terminate_keep_promise_1() -> None:
a = [1, 2, 3]
for i in a:
Invariant(MustTerminate(len(a) - len(Previous(i))))
#:: ExpectedOutput(call.precondition:insufficient.permission)
a.append(4)
def test_measures_4(a: List[int]) -> None:
Requires(Acc(list_pred(a)))
Requires(len(a) > 1)
for i in a:
#:: ExpectedOutput(invariant.not.preserved:obligation_measure.non_positive)
Invariant(MustTerminate(len(a) - len(Previous(i)) - 1))
def test_measures_3(a: List[int]) -> None:
Requires(Acc(list_pred(a)))
for i in a:
Invariant(MustTerminate(len(a) - len(Previous(i))))
def test_exhale_1(a: List[int]) -> None:
Requires(Acc(list_pred(a)))
for i in a:
Invariant(MustTerminate(len(a) - len(Previous(i))))
Invariant(MustTerminate(1 + len(a) - len(Previous(i))))
def test_generation_1(a: List[int]) -> None:
Requires(Acc(list_pred(a)))
for i in a:
Invariant(MustTerminate(len(a) - len(Previous(i))))
non_terminating()