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1   /*******************************************************************************
2    * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
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 pseudo boolean algorithms described in:
20   * A fast pseudo-Boolean constraint solver Chai, D.; Kuehlmann, A.
21   * Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
22   * Volume 24, Issue 3, March 2005 Page(s): 305 - 317
23   * 
24   * and 
25   * Heidi E. Dixon, 2004. Automating Pseudo-Boolean Inference within a DPLL 
26   * Framework. Ph.D. Dissertation, University of Oregon.
27   *******************************************************************************/
28  package org.sat4j.pb;
29  
30  import static java.lang.System.out;
31  
32  import java.util.Collection;
33  
34  import org.sat4j.AbstractLauncher;
35  import org.sat4j.ExitCode;
36  import org.sat4j.pb.reader.OPBEclipseReader2007;
37  import org.sat4j.pb.tools.XplainPB;
38  import org.sat4j.reader.Reader;
39  import org.sat4j.specs.IConstr;
40  import org.sat4j.specs.ISolver;
41  import org.sat4j.specs.TimeoutException;
42  
43  public class LanceurPseudo2007Eclipse extends LanceurPseudo2007 {
44  
45  	XplainPB quickxplain;
46  
47  	@Override
48  	protected ISolver configureSolver(String[] args) {
49  		IPBSolver theSolver;
50  		if (args.length > 1) {
51  			theSolver = SolverFactory.instance().createSolverByName(args[0]);
52  		} else {
53  			theSolver = SolverFactory.newDefault();
54  		}
55  		quickxplain = new XplainPB(theSolver);
56  		theSolver = new PseudoOptDecorator(quickxplain);
57  		if (args.length == 3) {
58  			theSolver.setTimeout(Integer.valueOf(args[1]));
59  		}
60  		out.println(theSolver.toString(COMMENT_PREFIX)); //$NON-NLS-1$
61  		return theSolver;
62  	}
63  
64  	/**
65  	 * 
66  	 */
67  	private static final long serialVersionUID = 1L;
68  
69  	public LanceurPseudo2007Eclipse() {
70  	}
71  
72  	@Override
73  	protected Reader createReader(ISolver theSolver, String problemname) {
74  		return new OPBEclipseReader2007((IPBSolver) theSolver);
75  	}
76  
77  	/**
78  	 * Lance le prouveur sur un fichier Dimacs
79  	 * 
80  	 * @param args
81  	 *            doit contenir le nom d'un fichier Dimacs, eventuellement
82  	 *            compress?.
83  	 */
84  	public static void main(final String[] args) {
85  		final AbstractLauncher lanceur = new LanceurPseudo2007Eclipse();
86  		if (args.length == 0 || args.length > 2) {
87  			lanceur.usage();
88  			return;
89  		}
90  		lanceur.run(args);
91  		System.exit(lanceur.getExitCode().value());
92  	}
93  
94  	@Override
95  	protected void displayAnswer() {
96  		super.displayAnswer();
97  		ExitCode exitCode = getExitCode();
98  
99  		if (exitCode == ExitCode.UNSATISFIABLE) {
100 			try {
101 
102 				Collection<IConstr> explanation = quickxplain.explain();
103 				log("Explanation for inconsistency: " + explanation);
104 			} catch (TimeoutException e) {
105 				log("Timeout ! Need more time to complete");
106 			}
107 		}
108 
109 	}
110 
111 }