Source Code Cross Referenced for DecisionProcedureCVC3.java in  » Testing » KeY » de » uka » ilkd » key » proof » decproc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » KeY » de.uka.ilkd.key.proof.decproc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // This file is part of KeY - Integrated Deductive Software Design
002:        // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
003:        //                         Universitaet Koblenz-Landau, Germany
004:        //                         Chalmers University of Technology, Sweden
005:        //
006:        // The KeY system is protected by the GNU General Public License. 
007:        // See LICENSE.TXT for details.
008:        //This file is part of KeY - Integrated Deductive Software Design
009:        //Copyright (C) 2001-2005 Universitaet Karlsruhe, Germany
010:        //Universitaet Koblenz-Landau, Germany
011:        //Chalmers University of Technology, Sweden
012:
013:        //The KeY system is protected by the GNU General Public License. 
014:        //See LICENSE.TXT for details.
015:
016:        package de.uka.ilkd.key.proof.decproc;
017:
018:        import java.io.IOException;
019:        import java.io.InputStream;
020:        import org.apache.log4j.Logger;
021:        import de.uka.ilkd.key.java.Services;
022:        import de.uka.ilkd.key.logic.Constraint;
023:        import de.uka.ilkd.key.proof.Goal;
024:
025:        /** This class is responsible for invoking the back-end decision procedure CVC3 on a
026:         * <tt>Benchmark</tt>, evaluating its results and returning them represented properly to 
027:         * <tt>DecisionProcedureSmtAuflia</tt>
028:         */
029:
030:        public class DecisionProcedureCVC3 extends DecisionProcedureSmtAuflia {
031:
032:            /** A <tt>String</tt> representation of the command used to execute CVC3 */
033:            private static final String CVC3Command = "cvc3";
034:            /** <tt>String</tt>s representing the CVC3 command option for SMT-LIB support */
035:            private static final String CVC3SmtFlag1 = "-lang";
036:            private static final String CVC3SmtFlag2 = "smt";
037:            /** A <tt>String</tt> representing the answer of CVC3 if it found a benchmark to be 
038:             * unsatisfiable */
039:            private static final String CVC3UnsatAnwser = "unsat";
040:
041:            /** A <tt>Logger</tt> for monitoring and logging of progress in the decision procedure */
042:            private static final Logger logger = Logger
043:                    .getLogger(DecisionProcedureCVC3.class.getName());
044:
045:            // Logger is created hierarchical to inherit configuration and behaviour from parent
046:
047:            /** A mere constructor.
048:             * 
049:             * @param goal the <tt>Goal</tt> which should be checked for satisfiability
050:             * @param dptf the <tt>DecisionProcedureTranslationFactory</tt> used to ranslate the the
051:             *             sequent of the goal
052:             * @param services the <tt>Services</tt> used during the translation process 
053:             */
054:            public DecisionProcedureCVC3(Goal goal,
055:                    DecisionProcedureTranslationFactory dptf, Services services) {
056:                super (goal, dptf, services);
057:            }
058:
059:            /** This method is reponsible executing and evaluating CVC3. It implements the hook provided in 
060:             * <tt>DecisionProcedureSmtAuflia</tt>
061:             * 
062:             *  @throws RuntimeException if an <tt>Exception</tt> occured due to the invocation or 
063:             *                           execution of CVC3
064:             */
065:            protected DecisionProcedureResult execDecProc() {
066:
067:                try {
068:                    // Run CVC3 on stored translation result (benchmark)
069:                    logger.info("Running CVC3 on created benchmark...");
070:                    String[] cmdArray = { CVC3Command, CVC3SmtFlag1,
071:                            CVC3SmtFlag2, super .getTempFile().getPath() };
072:                    Process p = Runtime.getRuntime().exec(cmdArray);
073:                    logger
074:                            .info("CVC3 exection finished, processing results...");
075:
076:                    // Retrieve results
077:                    InputStream in = p.getInputStream();
078:                    String cvcResult = read(in);
079:                    logger.debug("Retrieved result succussfully!");
080:                    in.close();
081:
082:                    // Create DecisionProcedureResult from CVC3 results
083:                    boolean result = cvcResult.indexOf(CVC3UnsatAnwser) >= 0;
084:                    return new DecisionProcedureResult(result, cvcResult,
085:                            Constraint.BOTTOM);
086:
087:                } catch (IOException e) {
088:                    logger.info("An IOException occured:", e);
089:                    final String errorMessage = "\"CVC3\" execution failed:\n\n"
090:                            + e
091:                            + "\n\n"
092:                            + "Currently, CVC3 supports only Linux operated systems!\n\n"
093:                            + "To make use of CVC3 make sure that \n\n"
094:                            + "1. the main shell script is named cvcl.sh\n"
095:                            + "2. the directory where the shell script resides is in your $PATH variable\n"
096:                            + "3. the shell script and the binary have executable file permissions.";
097:                    throw new RuntimeException(errorMessage);
098:                }
099:            }
100:
101:        }
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