Source Code Cross Referenced for DecisionProcedureSVC.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:        //
017:
018:        package de.uka.ilkd.key.proof.decproc;
019:
020:        import java.io.IOException;
021:        import java.io.InputStream;
022:        import org.apache.log4j.Logger;
023:        import de.uka.ilkd.key.java.Services;
024:        import de.uka.ilkd.key.logic.Constraint;
025:        import de.uka.ilkd.key.proof.Goal;
026:
027:        /** This class is responsible for invoking the back-end decision procedure SVC on a
028:         * <tt>Benchmark</tt>, evaluating its results and returning them represented properly to 
029:         * <tt>DecisionProcedureSmtAuflia</tt>   
030:         * 
031:         * @author akuwertz
032:         * @version 1.0,  05/29/2006
033:         */
034:
035:        public class DecisionProcedureSVC extends DecisionProcedureSmtAuflia {
036:
037:            /** A <tt>String</tt> representation of the command used to execute SVC */
038:            private static final String SVCCommand = "svc";
039:
040:            /** A <tt>String</tt> representing the answer of SVC if it found a benchmark to be
041:             * unsatisfiable */
042:            private static final String SVCUnsatAnwser = "unsat";
043:
044:            /** A <tt>Logger</tt> for monitoring and logging of progress in the decision procedure */
045:            private static final Logger logger = Logger
046:                    .getLogger(DecisionProcedureSVC.class.getName());
047:
048:            // Logger is created hierarchical to inherit configuration and behaviour from parent
049:
050:            /** A mere constructor.
051:             * 
052:             * @param goal the <tt>Goal</tt> which should be checked for satisfiability
053:             * @param dptf the <tt>DecisionProcedureTranslationFactory</tt> used to ranslate the the
054:             *             sequent of the goal
055:             * @param services the <tt>Services</tt> used during the translation process 
056:             */
057:            public DecisionProcedureSVC(Goal goal,
058:                    DecisionProcedureTranslationFactory dptf, Services services) {
059:                super (goal, dptf, services);
060:            }
061:
062:            /** This method is reponsible executing and evaluating SVC. It implements the hook provided in 
063:             * <tt>DecisionProcedureSmtAuflia</tt>
064:             * 
065:             *  @throws RuntimeException if an <tt>Exception</tt> occured due to the invocation or 
066:             *                           execution of SVC
067:             */
068:            protected DecisionProcedureResult execDecProc() {
069:
070:                try {
071:                    // Run SVC on stored translation result (benchmark)
072:                    logger.info("Running SVC on created benchmark...");
073:                    Process p = Runtime.getRuntime().exec(SVCCommand);
074:                    p.getOutputStream().write(
075:                            getResultBenchmark().toString().getBytes());
076:                    p.getOutputStream().close();
077:                    logger.info("SVC exection finished, processing results...");
078:
079:                    // Retrieve results
080:                    InputStream in = p.getInputStream();
081:                    String svcResult = read(in);
082:                    logger.debug("Retrieved result succussfully!");
083:                    in.close();
084:
085:                    // Create DecisionProcedureResult from SVC results
086:                    boolean result = svcResult.indexOf(SVCUnsatAnwser) >= 0;
087:                    return new DecisionProcedureResult(result, svcResult,
088:                            Constraint.BOTTOM);
089:
090:                } catch (IOException e) {
091:                    logger.info("An IOException occured:", e);
092:                    final String errorMessage = "\"SVC\" execution failed:\n\n"
093:                            + e
094:                            + "\n\n"
095:                            + "To make use of SVC make sure that \n\n"
096:                            + "1. the binary is named svc "
097:                            + "2. the directory where the binary resides is in your $PATH variable\n"
098:                            + "3. the binary has executable file permissions.";
099:                    throw new RuntimeException(errorMessage);
100:                }
101:            }
102:
103:        }
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