1 /*******************************************************************************
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
3 *
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
8 *
9 * Alternatively, the contents of this file may be used under the terms of
10 * either the GNU Lesser General Public License Version 2.1 or later (the
11 * "LGPL"), in which case the provisions of the LGPL are applicable instead
12 * of those above. If you wish to allow use of your version of this file only
13 * under the terms of the LGPL, and not to allow others to use your version of
14 * this file under the terms of the EPL, indicate your decision by deleting
15 * the provisions above and replace them with the notice and other provisions
16 * required by the LGPL. If you do not delete the provisions above, a recipient
17 * may use your version of this file under the terms of the EPL or the LGPL.
18 *
19 * Based on the original MiniSat specification from:
20 *
21 * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
22 * Sixth International Conference on Theory and Applications of Satisfiability
23 * Testing, LNCS 2919, pp 502-518, 2003.
24 *
25 * See www.minisat.se for the original solver in C++.
26 *
27 * Contributors:
28 * CRIL - initial API and implementation
29 *******************************************************************************/
30 package org.sat4j.tools.xplain;
31
32 import java.io.Serializable;
33 import java.util.Map;
34
35 import org.sat4j.specs.ISolver;
36 import org.sat4j.specs.IVecInt;
37 import org.sat4j.specs.TimeoutException;
38
39 /**
40 * Minimization technique used to reduce an unsatisfiable set of constraints
41 * into a minimally unsatisfiable subformula (MUS).
42 *
43 * @author daniel
44 * @since 2.1
45 */
46 public interface MinimizationStrategy extends Serializable {
47
48 /**
49 *
50 * @param solver
51 * @param constrs
52 * @param assumps
53 * @return
54 * @throws TimeoutException
55 * @since 2.1
56 */
57 IVecInt explain(ISolver solver, Map<Integer, ?> constrs, IVecInt assumps)
58 throws TimeoutException;
59
60 /**
61 * @since 2.1
62 */
63 void cancelExplanationComputation();
64 }