6433387082

Committed 06 Oct 2023 03:10PM UTC coverage: 92.296% (-0.007%) from 92.303%

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update Falk's developer id

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71.43

/oracles/equivalence-oracles/src/main/java/de/learnlib/oracle/equivalence/DisproveFirstOracle.java

/* Copyright (C) 2013-2023 TU Dortmund
 * This file is part of LearnLib, http://www.learnlib.de/.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.learnlib.oracle.equivalence;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import de.learnlib.api.oracle.BlackBoxOracle;
import de.learnlib.api.oracle.BlackBoxOracle.DFABlackBoxOracle;
import de.learnlib.api.oracle.BlackBoxOracle.MealyBlackBoxOracle;
import de.learnlib.api.oracle.PropertyOracle;
import de.learnlib.api.oracle.PropertyOracle.DFAPropertyOracle;
import de.learnlib.api.oracle.PropertyOracle.MealyPropertyOracle;
import de.learnlib.api.query.DefaultQuery;
import de.learnlib.buildtool.refinement.annotation.GenerateRefinement;
import de.learnlib.buildtool.refinement.annotation.Generic;
import de.learnlib.buildtool.refinement.annotation.Interface;
import de.learnlib.buildtool.refinement.annotation.Map;
import net.automatalib.automata.concepts.Output;
import net.automatalib.automata.fsa.DFA;
import net.automatalib.automata.transducers.MealyMachine;
import net.automatalib.words.Word;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * The strategy of this black-box oracle is to first try to disprove all properties before finding a counter example to
 * the given hypothesis.
 * <p>
 * One may favor this implementation if refining a hypothesis is expensive compared to trying to disprove properties.
 *
 * @param <A>
 *         the automaton type
 * @param <I>
 *         the input type
 * @param <D>
 *         the output type
 *
 * @see CExFirstOracle
 */
@GenerateRefinement(name = "DFADisproveFirstOracle",
                    generics = "I",
                    parentGenerics = {@Generic(clazz = DFA.class, generics = {"?", "I"}),
                                      @Generic("I"),
                                      @Generic(clazz = Boolean.class)},
                    parameterMapping = @Map(from = PropertyOracle.class,
                                            to = DFAPropertyOracle.class,
                                            withGenerics = {"I", "?"}),
                    interfaces = @Interface(clazz = DFABlackBoxOracle.class, generics = "I"))
@GenerateRefinement(name = "MealyDisproveFirstOracle",
                    generics = {"I", "O"},
                    parentGenerics = {@Generic(clazz = MealyMachine.class, generics = {"?", "I", "?", "O"}),
                                      @Generic("I"),
                                      @Generic(clazz = Word.class, generics = "O")},
                    parameterMapping = @Map(from = PropertyOracle.class,
                                            to = MealyPropertyOracle.class,
                                            withGenerics = {"I", "O", "?"}),
                    interfaces = @Interface(clazz = MealyBlackBoxOracle.class, generics = {"I", "O"}))
public class DisproveFirstOracle<A extends Output<I, D>, I, D> implements BlackBoxOracle<A, I, D> {

    private final List<PropertyOracle<I, ? super A, ?, D>> propertyOracles;

    public DisproveFirstOracle() {
        this(Collections.emptyList());
    }

    public DisproveFirstOracle(PropertyOracle<I, ? super A, ?, D> propertyOracle) {
        this(Collections.singleton(propertyOracle));
    }

    public DisproveFirstOracle(Collection<? extends PropertyOracle<I, ? super A, ?, D>> propertyOracles) {
        this.propertyOracles = new ArrayList<>(propertyOracles);
    }

    @Override
    public List<PropertyOracle<I, ? super A, ?, D>> getPropertyOracles() {
        return propertyOracles;
    }

    @Override
    public @Nullable DefaultQuery<I, D> findCounterExample(A hypothesis, Collection<? extends I> inputs) {
        for (PropertyOracle<I, ? super A, ?, D> po : propertyOracles) {
            if (!po.isDisproved()) {
                po.disprove(hypothesis, inputs);
            }
        }

        for (PropertyOracle<I, ? super A, ?, D> po : propertyOracles) {
            if (!po.isDisproved()) {
                final DefaultQuery<I, D> ce = po.doFindCounterExample(hypothesis, inputs);
                if (ce != null) {
                    assert isCounterExample(hypothesis, ce.getInput(), ce.getOutput());
                    return ce;
                }
            }
        }

        return null;
    }
}

1	/* Copyright (C) 2013-2023 TU Dortmund
2	* This file is part of LearnLib, http://www.learnlib.de/.
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package de.learnlib.oracle.equivalence;
17
18	import java.util.ArrayList;
19	import java.util.Collection;
20	import java.util.Collections;
21	import java.util.List;
22
23	import de.learnlib.api.oracle.BlackBoxOracle;
24	import de.learnlib.api.oracle.BlackBoxOracle.DFABlackBoxOracle;
25	import de.learnlib.api.oracle.BlackBoxOracle.MealyBlackBoxOracle;
26	import de.learnlib.api.oracle.PropertyOracle;
27	import de.learnlib.api.oracle.PropertyOracle.DFAPropertyOracle;
28	import de.learnlib.api.oracle.PropertyOracle.MealyPropertyOracle;
29	import de.learnlib.api.query.DefaultQuery;
30	import de.learnlib.buildtool.refinement.annotation.GenerateRefinement;
31	import de.learnlib.buildtool.refinement.annotation.Generic;
32	import de.learnlib.buildtool.refinement.annotation.Interface;
33	import de.learnlib.buildtool.refinement.annotation.Map;
34	import net.automatalib.automata.concepts.Output;
35	import net.automatalib.automata.fsa.DFA;
36	import net.automatalib.automata.transducers.MealyMachine;
37	import net.automatalib.words.Word;
38	import org.checkerframework.checker.nullness.qual.Nullable;
39
40	/**
41	* The strategy of this black-box oracle is to first try to disprove all properties before finding a counter example to
42	* the given hypothesis.
43	* <p>
44	* One may favor this implementation if refining a hypothesis is expensive compared to trying to disprove properties.
45	*
46	* @param <A>
47	* the automaton type
48	* @param <I>
49	* the input type
50	* @param <D>
51	* the output type
52	*
53	* @see CExFirstOracle
54	*/
55	@GenerateRefinement(name = "DFADisproveFirstOracle",	2✔
56	generics = "I",
57	parentGenerics = {@Generic(clazz = DFA.class, generics = {"?", "I"}),
58	@Generic("I"),
59	@Generic(clazz = Boolean.class)},
60	parameterMapping = @Map(from = PropertyOracle.class,
61	to = DFAPropertyOracle.class,
62	withGenerics = {"I", "?"}),
63	interfaces = @Interface(clazz = DFABlackBoxOracle.class, generics = "I"))
64	@GenerateRefinement(name = "MealyDisproveFirstOracle",
65	generics = {"I", "O"},
66	parentGenerics = {@Generic(clazz = MealyMachine.class, generics = {"?", "I", "?", "O"}),
67	@Generic("I"),
68	@Generic(clazz = Word.class, generics = "O")},
69	parameterMapping = @Map(from = PropertyOracle.class,
70	to = MealyPropertyOracle.class,
71	withGenerics = {"I", "O", "?"}),
72	interfaces = @Interface(clazz = MealyBlackBoxOracle.class, generics = {"I", "O"}))
73	public class DisproveFirstOracle<A extends Output<I, D>, I, D> implements BlackBoxOracle<A, I, D> {
74
75	private final List<PropertyOracle<I, ? super A, ?, D>> propertyOracles;
76
77	public DisproveFirstOracle() {
78	this(Collections.emptyList());	×
79	}	×
80
81	public DisproveFirstOracle(PropertyOracle<I, ? super A, ?, D> propertyOracle) {
82	this(Collections.singleton(propertyOracle));	×
83	}	×
84
85	public DisproveFirstOracle(Collection<? extends PropertyOracle<I, ? super A, ?, D>> propertyOracles) {	2✔
86	this.propertyOracles = new ArrayList<>(propertyOracles);	2✔
87	}	2✔
88
89	@Override
90	public List<PropertyOracle<I, ? super A, ?, D>> getPropertyOracles() {
91	return propertyOracles;	2✔
92	}
93
94	@Override
95	public @Nullable DefaultQuery<I, D> findCounterExample(A hypothesis, Collection<? extends I> inputs) {
96	for (PropertyOracle<I, ? super A, ?, D> po : propertyOracles) {	2✔
97	if (!po.isDisproved()) {	2✔
98	po.disprove(hypothesis, inputs);	2✔
99	}
100	}	2✔
101
102	for (PropertyOracle<I, ? super A, ?, D> po : propertyOracles) {	2✔
103	if (!po.isDisproved()) {	2✔
104	final DefaultQuery<I, D> ce = po.doFindCounterExample(hypothesis, inputs);	2✔
105	if (ce != null) {	2✔
106	assert isCounterExample(hypothesis, ce.getInput(), ce.getOutput());	2✔
107	return ce;	2✔
108	}
109	}
110	}	×
111
112	return null;	×
113	}
114	}

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