/*
 * SAT4J: a SATisfiability library for Java   
 * Copyright (C) 2004-2006 Daniel Le Berre
 * 
 * Based on the original minisat specification from:
 * 
 * An extensible SAT solver. Niklas Eén and Niklas Sörensson.
 * Proceedings of the Sixth International Conference on Theory 
 * and Applications of Satisfiability Testing, LNCS 2919, 
 * pp 502-518, 2003.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *  
 */