6433387082

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

Build # 6433387082

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push

github

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mtf90

Commit Message

update Falk's developer id

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86.67

/oracles/property-oracles/src/main/java/de/learnlib/oracle/property/AbstractPropertyOracle.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.property;

import java.util.Collection;

import de.learnlib.api.oracle.EmptinessOracle;
import de.learnlib.api.oracle.InclusionOracle;
import de.learnlib.api.oracle.PropertyOracle;
import de.learnlib.api.query.DefaultQuery;
import net.automatalib.automata.concepts.Output;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A {@link PropertyOracle} that uses {@link InclusionOracle}s and {@link EmptinessOracle}s to find counter examples and
 * disprove properties.
 *
 * @param <I>
 *         the input type
 * @param <A>
 *         the automaton type
 * @param <P>
 *         the property type
 * @param <D>
 *         the output type
 * @param <R>
 *         the result type of model checker
 */
abstract class AbstractPropertyOracle<I, A extends Output<I, D>, P, D, R extends A>
        implements PropertyOracle<I, A, P, D> {

    private final InclusionOracle<A, I, D> inclusionOracle;
    private final EmptinessOracle<R, I, D> emptinessOracle;
    private P property;
    private @Nullable DefaultQuery<I, D> counterExample;

    protected AbstractPropertyOracle(P property,
                                     InclusionOracle<A, I, D> inclusionOracle,
                                     EmptinessOracle<R, I, D> emptinessOracle) {
        this.property = property;
        this.inclusionOracle = inclusionOracle;
        this.emptinessOracle = emptinessOracle;
    }

    protected @Nullable DefaultQuery<I, D> setCounterExample(@Nullable DefaultQuery<I, D> counterExample) {
        this.counterExample = counterExample;
        return counterExample;
    }

    @Override
    public void setProperty(P property) {
        this.property = property;
    }

    @Override
    public P getProperty() {
        return property;
    }

    @Override
    public @Nullable DefaultQuery<I, D> getCounterExample() {
        return counterExample;
    }

    protected abstract R modelCheck(A hypothesis, Collection<? extends I> inputs);

    @Override
    public @Nullable DefaultQuery<I, D> doFindCounterExample(A hypothesis, Collection<? extends I> inputs) {
        final A result = modelCheck(hypothesis, inputs);
        return result != null ? inclusionOracle.findCounterExample(result, inputs) : null;
    }

    @Override
    public @Nullable DefaultQuery<I, D> disprove(A hypothesis, Collection<? extends I> inputs) {
        final R ce = modelCheck(hypothesis, inputs);

        return ce != null ? setCounterExample(emptinessOracle.findCounterExample(ce, inputs)) : 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.property;
17
18	import java.util.Collection;
19
20	import de.learnlib.api.oracle.EmptinessOracle;
21	import de.learnlib.api.oracle.InclusionOracle;
22	import de.learnlib.api.oracle.PropertyOracle;
23	import de.learnlib.api.query.DefaultQuery;
24	import net.automatalib.automata.concepts.Output;
25	import org.checkerframework.checker.nullness.qual.Nullable;
26
27	/**
28	* A {@link PropertyOracle} that uses {@link InclusionOracle}s and {@link EmptinessOracle}s to find counter examples and
29	* disprove properties.
30	*
31	* @param <I>
32	* the input type
33	* @param <A>
34	* the automaton type
35	* @param <P>
36	* the property type
37	* @param <D>
38	* the output type
39	* @param <R>
40	* the result type of model checker
41	*/
42	abstract class AbstractPropertyOracle<I, A extends Output<I, D>, P, D, R extends A>
43	implements PropertyOracle<I, A, P, D> {
44
45	private final InclusionOracle<A, I, D> inclusionOracle;
46	private final EmptinessOracle<R, I, D> emptinessOracle;
47	private P property;
48	private @Nullable DefaultQuery<I, D> counterExample;
49
50	protected AbstractPropertyOracle(P property,
51	InclusionOracle<A, I, D> inclusionOracle,
52	EmptinessOracle<R, I, D> emptinessOracle) {	2✔
53	this.property = property;	2✔
54	this.inclusionOracle = inclusionOracle;	2✔
55	this.emptinessOracle = emptinessOracle;	2✔
56	}	2✔
57
58	protected @Nullable DefaultQuery<I, D> setCounterExample(@Nullable DefaultQuery<I, D> counterExample) {
59	this.counterExample = counterExample;	2✔
60	return counterExample;	2✔
61	}
62
63	@Override
64	public void setProperty(P property) {
65	this.property = property;	×
66	}	×
67
68	@Override
69	public P getProperty() {
70	return property;	2✔
71	}
72
73	@Override
74	public @Nullable DefaultQuery<I, D> getCounterExample() {
75	return counterExample;	2✔
76	}
77
78	protected abstract R modelCheck(A hypothesis, Collection<? extends I> inputs);
79
80	@Override
81	public @Nullable DefaultQuery<I, D> doFindCounterExample(A hypothesis, Collection<? extends I> inputs) {
82	final A result = modelCheck(hypothesis, inputs);	2✔
83	return result != null ? inclusionOracle.findCounterExample(result, inputs) : null;	2✔
84	}
85
86	@Override
87	public @Nullable DefaultQuery<I, D> disprove(A hypothesis, Collection<? extends I> inputs) {
88	final R ce = modelCheck(hypothesis, inputs);	2✔
89
90	return ce != null ? setCounterExample(emptinessOracle.findCounterExample(ce, inputs)) : null;	2✔
91	}
92	}

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