Python examples.get_example_formulae函数代码示例

    def test_types_oracle_examples(self):
        oracle = get_env().typeso
        for (f, _, _, _) in get_example_formulae():
            types_all = oracle.get_types(f)
            types_custom = oracle.get_types(f, custom_only=True)
            # Custom types are a subset of all types
            s1 = set(types_all)
            s2 = set(types_custom)
            self.assertTrue(s1.issuperset(s2))

            # Compare logics with types
            theory = self.env.theoryo.get_theory(f)
            if len(f.get_free_variables()) == 0:
                continue
            if theory.arrays:
                self.assertTrue(any(x.is_array_type() for x in types_all),
                                (f, types_all))
            if theory.bit_vectors:
                self.assertTrue(any(x.is_bv_type() for x in types_all),
                                (f, types_all))
            if theory.integer_arithmetic:
                self.assertTrue(any(x.is_int_type() for x in types_all),
                                (f, types_all))
            if theory.real_arithmetic:
                self.assertTrue(any(x.is_real_type() for x in types_all),
                                (f, types_all))

    def test_examples_z3(self):
        for (f, validity, satisfiability, logic) in get_example_formulae():
            v = is_valid(f, solver_name='z3', logic=logic)
            s = is_sat(f, solver_name='z3', logic=logic)

            self.assertEqual(validity, v, f)
            self.assertEqual(satisfiability, s, f)

 def test_examples_conversion(self):
     convert = self.bdd_converter.convert
     for example in get_example_formulae():
         if example.logic != BOOL:
             continue
         expr = convert(example.expr)
         self.assertIsNotNone(expr)

    def test_dumped_logic(self):
        # Dumped logic matches the logic in the example
        fs = get_example_formulae()

        for (f_out, _, _, logic) in fs:
            buf_out = cStringIO()
            script_out = smtlibscript_from_formula(f_out)
            script_out.serialize(outstream=buf_out)

            buf_in = cStringIO(buf_out.getvalue())
            parser = SmtLibParser()
            script_in = parser.get_script(buf_in)
            for cmd in script_in:
                if cmd.name == "set-logic":
                    logic_in = cmd.args[0]
                    if logic == logics.QF_BOOL:
                        self.assertEqual(logic_in, logics.QF_UF)
                    elif logic == logics.BOOL:
                        self.assertEqual(logic_in, logics.LRA)
                    else:
                        self.assertEqual(logic_in, logic, script_in)
                    break
            else: # Loops exited normally
                print("-"*40)
                print(script_in)

    def _helper_check_examples(self, solver_name):
        for (f, _, satisfiability, logic) in get_example_formulae():
            if not logic.quantifier_free: continue
            if satisfiability == False:
                with UnsatCoreSolver(name=solver_name,
                                     unsat_cores_mode="named") as solver:
                    if logic not in solver.LOGICS: continue
                    clauses = [f]
                    if f.is_and():
                        clauses = f.args()

                    for i,c in enumerate(clauses):
                        solver.add_assertion(c, "a%d" % i)

                    try:
                        r = solver.solve()
                        self.assertFalse(r)
                    except SolverReturnedUnknownResultError:
                        if QF_BV <= logic:
                            continue # Unsat-core support for QF_UFBV might be
                                     # incomplete
                        else:
                            raise

                    core = solver.get_named_unsat_core()

                    self.assertTrue(len(core) <= len(clauses))
                    for k in core.values():
                        self.assertIn(k, clauses)

                    self.assertTrue(is_unsat(And(core.values()), logic=logic))

    def do_model(self, solver_name):
        for (f, _, satisfiability, logic) in get_example_formulae():
            if satisfiability and not logic.theory.uninterpreted and logic.quantifier_free:
                try:
                    with Solver(name=solver_name, logic=logic) as s:
                        s.add_assertion(f)

                        check = s.solve()
                        self.assertTrue(check)

                        # Ask single values to the solver
                        subs = {}
                        for d in f.get_free_variables():
                            m = s.get_value(d)
                            subs[d] = m

                        simp = f.substitute(subs).simplify()
                        self.assertEqual(simp, TRUE(), "%s -- %s :> %s" % (f, subs, simp))

                        # Ask the eager model
                        subs = {}
                        model = s.get_model()
                        for d in f.get_free_variables():
                            m = model.get_value(d)
                            subs[d] = m

                        simp = f.substitute(subs).simplify()
                        self.assertEqual(simp, TRUE())
                except NoSolverAvailableError:
                    pass

    def test_bdd_simplify(self):
        s = BddSimplifier()
        for (f, _, _, logic) in get_example_formulae():
            if logic == QF_BOOL:
                fprime = s.simplify(f)
                self.assertValid(Iff(fprime, f))

        s = BddSimplifier()
        try:
            s.validate_simplifications = True
        except ValueError:
            self.assertTrue(len(self.env.factory.all_solvers())==1)
        for (f, _, _, logic) in get_example_formulae():
            if logic == QF_BOOL:
                fprime = s.simplify(f)
                self.assertValid(Iff(fprime, f))

    def test_examples_yices(self):
        for (f, validity, satisfiability, logic) in get_example_formulae():
            if not logic.quantifier_free: continue
            v = is_valid(f, solver_name='yices', logic=logic)
            s = is_sat(f, solver_name='yices', logic=logic)

            self.assertEqual(validity, v, f)
            self.assertEqual(satisfiability, s, f)

    def test_examples_by_logic(self):
        for (f, validity, satisfiability, logic) in get_example_formulae():
            if len(get_env().factory.all_solvers(logic=logic)) > 0:
                v = is_valid(f, logic=logic)
                s = is_sat(f, logic=logic)

                self.assertEqual(validity, v, f.serialize())
                self.assertEqual(satisfiability, s, f.serialize())

    def test_shortcuts(self):
        for (expr, _, sat_res, logic) in get_example_formulae():
            if not logic <= QF_UFLIRA: continue
            res = is_sat(expr, portfolio=["z3", "cvc4", "msat"])
            self.assertEqual(res, sat_res, expr)

        with self.assertRaises(ValueError):
            is_sat(TRUE(), portfolio=["supersolver"])

    def _std_examples(self, qe, target_logic):
        for (f, validity, satisfiability, logic) in get_example_formulae():
            if logic != target_logic: continue
            qf = qe.eliminate_quantifiers(f)
            s = is_sat(qf)
            v = is_valid(qf)

            self.assertEqual(validity, v, f)
            self.assertEqual(satisfiability, s, f)

 def test_propagate_toplevel_examples(self):
    for (f, _, _, logic) in get_example_formulae():
         if self.env.factory.has_solvers(logic=logic):
             rwf = propagate_toplevel(f)
             try:
                 ok = is_valid(Iff(f, rwf), logic=logic)
             except SolverReturnedUnknownResultError:
                 ok = not logic.quantifier_free
             self.assertTrue(ok)

 def test_prenex_examples(self):
     for (f, _, _, logic) in get_example_formulae():
         if self.env.factory.has_solvers(logic=logic):
             prenex = prenex_normal_form(f)
             try:
                 ok = is_valid(Iff(f, prenex), logic=logic)
             except SolverReturnedUnknownResultError:
                 ok = not logic.quantifier_free
             self.assertTrue(ok)

 def test_examples_get_implicant(self):
     for (f, _, satisfiability, logic) in get_example_formulae():
         if logic.quantifier_free:
             for sname in get_env().factory.all_solvers(logic=logic):
                 f_i = get_implicant(f, logic=logic, solver_name=sname)
                 if satisfiability:
                     self.assertValid(Implies(f_i, f), logic=logic, msg=(f_i, f))
                 else:
                     self.assertIsNone(f_i)

 def test_nnf_examples(self):
     for (f, _, _, logic) in get_example_formulae():
         if get_env().factory.has_solvers(logic=logic):
             rf = nnf(f)
             try:
                 ok = is_valid(Iff(f, rf), logic=logic)
             except SolverReturnedUnknownResultError:
                 ok = not logic.quantifier_free
             self.assertTrue(ok)