def test_next_noloop(self):
with tests.Configure(self, __file__, "/example.smv"):
i, k = 0, 2
enc = self.enc
# One step
a = ast.Proposition("a")
formula = ast.Next(a)
tool = formula.semantic_no_loop(enc, i, k)
manual = a.semantic_no_loop(enc, 1, k)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(
parse_ltl_spec("X a")),
bound=k,
loop=bmcutils.no_loopback())
s_tool = tests.canonical_cnf(tool)
s_manual = tests.canonical_cnf(manual)
s_nusmv = tests.canonical_cnf(nusmv)
self.assertEqual(s_tool, s_nusmv)
self.assertEqual(s_tool, s_manual)
# two steps
formula = ast.Next(ast.Next(a))
tool = formula.semantic_no_loop(enc, i, k)
manual = a.semantic_no_loop(enc, 2, k)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(
parse_ltl_spec("X X a")),
bound=k,
loop=bmcutils.no_loopback())
s_tool = tests.canonical_cnf(tool)
s_manual = tests.canonical_cnf(manual)
s_nusmv = tests.canonical_cnf(nusmv)
self.assertEqual(s_tool, s_nusmv)
self.assertEqual(s_tool, s_manual)
# Three steps (getting over k)
formula = ast.Next(ast.Next(ast.Next(a)))
tool = formula.semantic_no_loop(enc, i, k)
manual = Be.false(enc.manager)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(
parse_ltl_spec("X X X a")),
bound=k,
loop=bmcutils.no_loopback())
s_tool = tests.canonical_cnf(tool)
s_manual = tests.canonical_cnf(manual)
s_nusmv = tests.canonical_cnf(nusmv)
self.assertEqual(s_tool, s_nusmv)
self.assertEqual(s_tool, s_manual)
def test_next_noloop(self):
with tests.Configure(self, __file__, "/example.smv"):
i,k = 0,2
enc = self.enc
# One step
a = ast.Proposition("a")
formula = ast.Next(a)
tool = formula.semantic_no_loop(enc, i, k)
manual = a.semantic_no_loop(enc, 1, k)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(parse_ltl_spec("X a")),
bound = k,
loop = bmcutils.no_loopback())
s_tool = tests.canonical_cnf(tool)
s_manual = tests.canonical_cnf(manual)
s_nusmv = tests.canonical_cnf(nusmv)
self.assertEqual(s_tool, s_nusmv)
self.assertEqual(s_tool, s_manual)
# two steps
formula = ast.Next(ast.Next(a))
tool = formula.semantic_no_loop(enc, i, k)
manual = a.semantic_no_loop(enc, 2, k)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(parse_ltl_spec("X X a")),
bound = k,
loop = bmcutils.no_loopback())
s_tool = tests.canonical_cnf(tool)
s_manual = tests.canonical_cnf(manual)
s_nusmv = tests.canonical_cnf(nusmv)
self.assertEqual(s_tool, s_nusmv)
self.assertEqual(s_tool, s_manual)
# Three steps (getting over k)
formula = ast.Next(ast.Next(ast.Next(a)))
tool = formula.semantic_no_loop(enc, i, k)
manual = Be.false(enc.manager)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(parse_ltl_spec("X X X a")),
bound = k,
loop = bmcutils.no_loopback())
s_tool = tests.canonical_cnf(tool)
s_manual = tests.canonical_cnf(manual)
s_nusmv = tests.canonical_cnf(nusmv)
self.assertEqual(s_tool, s_nusmv)
self.assertEqual(s_tool, s_manual)
def test_no_loopback(self):
self.assertTrue(bmcutils.is_no_loopback(bmcutils.no_loopback()))
self.assertFalse(bmcutils.is_no_loopback(1000))
self.assertFalse(bmcutils.is_no_loopback(bmcutils.all_loopbacks()))
self.assertFalse(bmcutils.is_no_loopback(-1 *
bmcutils.all_loopbacks()))
self.assertFalse(bmcutils.is_no_loopback(-10000))
def test_eventually_no_loop(self):
with tests.Configure(self, __file__, "/example.smv"):
i, k = 0, 2
enc = self.enc
a = ast.Proposition("a")
formula = ast.Eventually(a)
tool = formula.semantic_no_loop(enc, i, k)
manual = a.semantic_no_loop(enc, i+2, k) |\
a.semantic_no_loop(enc, i+1, k) |\
a.semantic_no_loop(enc, i, k)
nusmv = ltlspec.bounded_semantics(self.befsm,
Node.from_ptr(
parse_ltl_spec("F a")),
bound=k,
loop=bmcutils.no_loopback())
# normalized string representation of the BE's (make them comparable)
s_tool = tests.canonical_cnf(tool)
s_nusmv = tests.canonical_cnf(nusmv)
s_manual = tests.canonical_cnf(manual)
self.assertEqual(s_nusmv, s_tool)
self.assertEqual(s_manual, s_tool)
def test_weak_until_noloop(self):
with tests.Configure(self, __file__, "/example.smv"):
enc = self.enc
a = ast.Proposition("a")
b = ast.Proposition("b")
expr = ast.WeakUntil(a, b)
tool = expr.semantic_no_loop(enc, 0, 2)
manual = (b.semantic_no_loop(enc, 0, 2)
| (a.semantic_no_loop(enc, 0, 2) &
(b.semantic_no_loop(enc, 1, 2)
| (a.semantic_no_loop(enc, 1, 2) &
(b.semantic_no_loop(enc, 2, 2))))))
spec = Node.from_ptr(parse_ltl_spec("a U b"))
nusmv = ltlspec.bounded_semantics(self.befsm,
spec,
bound=2,
loop=bmcutils.no_loopback())
# normalized string representation of the BE's (make them comparable)
s_tool = tests.canonical_cnf(tool)
s_nusmv = tests.canonical_cnf(nusmv)
s_manual = tests.canonical_cnf(manual)
self.assertEqual(s_tool, s_manual)
self.assertEqual(s_tool, s_nusmv)
def test_eventually_no_loop(self):
with tests.Configure(self, __file__, "/example.smv"):
i,k = 0,2
enc = self.enc
a = ast.Proposition("a")
formula = ast.Eventually(a)
tool = formula.semantic_no_loop(enc, i, k)
manual = a.semantic_no_loop(enc, i+2, k) |\
a.semantic_no_loop(enc, i+1, k) |\
a.semantic_no_loop(enc, i, k)
nusmv = ltlspec.bounded_semantics(
self.befsm, Node.from_ptr(parse_ltl_spec("F a")),
bound = k,
loop = bmcutils.no_loopback())
# normalized string representation of the BE's (make them comparable)
s_tool = tests.canonical_cnf(tool)
s_nusmv = tests.canonical_cnf(nusmv)
s_manual= tests.canonical_cnf(manual)
self.assertEqual(s_nusmv, s_tool)
self.assertEqual(s_manual, s_tool)
def test_loop_from_string(self):
self.assertEqual(4, bmcutils.loop_from_string("4"))
self.assertEqual(-1, bmcutils.loop_from_string("-1"))
self.assertEqual(bmcutils.all_loopbacks(),
bmcutils.loop_from_string("*"))
self.assertEqual(bmcutils.all_loopbacks(),
bmcutils.loop_from_string("All"))
self.assertEqual(bmcutils.all_loopbacks(),
bmcutils.loop_from_string("All Loops"))
self.assertEqual(bmcutils.all_loopbacks(),
bmcutils.loop_from_string("all"))
self.assertEqual(bmcutils.all_loopbacks(),
bmcutils.loop_from_string("all loops"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("x"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("No"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("None"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("No Loop"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("no"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("none"))
self.assertEqual(bmcutils.no_loopback(),
bmcutils.loop_from_string("no loop"))
def test_successor(self):
# case where there is a loop
self.assertEqual(2, bmcutils.successor(1, 10, 0))
self.assertEqual(9, bmcutils.successor(8, 10, 0))
self.assertEqual(0, bmcutils.successor(9, 10, 0))
# case when there is none
self.assertEqual(2, bmcutils.successor(1, 10, bmcutils.no_loopback()))
self.assertEqual(10, bmcutils.successor(9, 10, bmcutils.no_loopback()))
self.assertIsNone(bmcutils.successor(10, 10, bmcutils.no_loopback()))
# time cannot be negative
with self.assertRaises(ValueError):
bmcutils.successor(-5, 10, 0)
# bound cannot be negative
with self.assertRaises(ValueError):
bmcutils.successor(5, -5, 0)
# bound and value must be consistent
with self.assertRaises(ValueError):
bmcutils.successor(5, 10, 20)
def test_check_consistency(self):
# when the bound is not meaningful
with self.assertRaises(ValueError):
bmcutils.check_consistency(-1, 2)
# when the loop is greater than the bound
with self.assertRaises(ValueError):
bmcutils.check_consistency(1, 2)
# unless it is a special value
bmcutils.check_consistency(4, bmcutils.all_loopbacks())
bmcutils.check_consistency(4, bmcutils.no_loopback())
def test_weak_until_noloop(self):
with tests.Configure(self, __file__, "/example.smv"):
enc = self.enc
a = ast.Proposition("a")
b = ast.Proposition("b")
expr = ast.WeakUntil(a, b)
tool = expr.semantic_no_loop(enc, 0, 2)
manual = ( b.semantic_no_loop(enc, 0, 2)
| (a.semantic_no_loop(enc, 0, 2) & (b.semantic_no_loop(enc, 1, 2)
| (a.semantic_no_loop(enc, 1, 2) & (b.semantic_no_loop(enc, 2, 2))))))
spec = Node.from_ptr(parse_ltl_spec("a U b"))
nusmv = ltlspec.bounded_semantics(self.befsm, spec, bound=2, loop=bmcutils.no_loopback())
# normalized string representation of the BE's (make them comparable)
s_tool = tests.canonical_cnf(tool)
s_nusmv = tests.canonical_cnf(nusmv)
s_manual= tests.canonical_cnf(manual)
self.assertEqual(s_tool, s_manual)
self.assertEqual(s_tool, s_nusmv)
