/src/examples/gov/nasa/jpf/bdd/jpfWSExperiments/SimpleExperiment2.java

package gov.nasa.jpf.bdd.jpfWSExperiments;

import gov.nasa.jpf.bdd.BddManager;
import gov.nasa.jpf.bdd.TrackWithBDD;
import gov.nasa.jpf.vm.Verify;
import gov.nasa.jpf.util.test.TestJPF;


import org.junit.Test;

public class SimpleExperiment2 extends TestJPF {
	private static final String[] JPF_BDD = {"+listener+=,gov.nasa.jpf.bdd.jpfWSExperiments.StateSpaceCounter,"
			+"gov.nasa.jpf.bdd.BddListener,"
			//+ "gov.nasa.jpf.listener.StateSpaceDot"
			//+ "gov.nasa.jpf.test.bdd.listeners.StateSpaceDotWithBDD"
			,"+search.class=gov.nasa.jpf.search.heuristic.BFSHeuristic"
		};
	private static final String[] NO_BDD = {"+listener=,gov.nasa.jpf.bdd.jpfWSExperiments.StateSpaceCounter,"
			//+ "gov.nasa.jpf.listener.StateSpaceDot"
			//+ "gov.nasa.jpf.test.bdd.listeners.StateSpaceDotWithBDD"
			 ,"+search.class=gov.nasa.jpf.search.heuristic.BFSHeuristic"
			 ,"+vm.insn_factory.class=gov.nasa.jpf.jvm.bytecode.InstructionFactory"
		};
	
	static boolean testBDD = true;
	static boolean testNoBDD = true;
	
	@TrackWithBDD
	static boolean a1,a2,a3,a4,a5,a6,a7,a8;
	
	@Test
	public void timingTest() throws Throwable {
		
		StateSpaceCounter.reset();
		
		if (testBDD) {
			executeExperiment2JPF_Bdd();
		}
		long bddMaxStateID = StateSpaceCounter.maxStateID;
		long bddBacktracked = StateSpaceCounter.backtracked;
		long bddInsns = StateSpaceCounter.insns;
		long bddTime  = StateSpaceCounter.time;
		long bddStateSave = StateSpaceCounter.newStates;
		long bddVisited = StateSpaceCounter.visitedStates;
		long bddCGs = StateSpaceCounter.createdCGs;
		
		System.gc();
		StateSpaceCounter.reset();
		BddManager.resetStatics();
	
		if (testNoBDD) {
			executeExperiment2JPF_no_bdd();
		}
		
		long nbddMaxStateID = StateSpaceCounter.maxStateID;
		long nbddBacktracked = StateSpaceCounter.backtracked;
		long nbddInsns = StateSpaceCounter.insns;
		long nbddTime  = StateSpaceCounter.time;
		long nbddStateSave = StateSpaceCounter.newStates;
		long nbddVisited = StateSpaceCounter.visitedStates;
		long nbddCGs = StateSpaceCounter.createdCGs;
				
		System.out.println("StateSpaceSize : ");
		System.out.println("  normal : " + (nbddMaxStateID+1));
		System.out.println("  jpf-bdd: " + (bddMaxStateID+1));
		System.out.println("Backtracked : ");
		System.out.println("  normal : " + nbddBacktracked);
		System.out.println("  jpf-bdd: " + bddBacktracked);
		System.out.println("Visited : ");
		System.out.println("  normal : " + nbddVisited);
		System.out.println("  jpf-bdd: " + bddVisited);
		System.out.println("newStates : ");
		System.out.println("  normal : " + nbddStateSave);
		System.out.println("  jpf-bdd: " + bddStateSave);
		System.out.println("Instructions : ");
		System.out.println("  normal : " + nbddInsns);
		System.out.println("  jpf-bdd: " + bddInsns);
		System.out.println("ChoiceGenerators : ");
		System.out.println("  normal : " + nbddCGs);
		System.out.println("  jpf-bdd: " + bddCGs);
		System.out.println("Time : ");
		System.out.println("  normal : " + nbddTime);
		System.out.println("  jpf-bdd: " + bddTime);
				
		StateSpaceCounter.printCGs=false;
		
	}
	public void executeExperiment2JPF_no_bdd() {
		// this seems to be necessary to run the tests in eclipse (JPF does not find this classfile any more?)
		//String[] args = addCurrentClassLocationToArgs(NO_BDD);
		//if(verifyNoPropertyViolation(args)) {
		if(verifyNoPropertyViolation()) {
			experiment2_no_bdd();
		}
		if (isJPFRun()) 
			System.exit(0);
	}
	public void executeExperiment2JPF_Bdd() {
		// this seems to be necessary to run the tests in eclipse (JPF does not find this classfile any more?)
		//String[] args = addCurrentClassLocationToArgs(JPF_BDD);
		//if(verifyNoPropertyViolation(args)) {
		if(verifyNoPropertyViolation()) {
			experiment2_bdd();
		}
		if (isJPFRun()) 
			System.exit(0);
	}
	public void experiment2_no_bdd() {
		@SuppressWarnings("unused")
		int i = 0;
		if (a1 = Verify.getBoolean()) {i++;}
		if (a2 = Verify.getBoolean()) {i++;}
		if (a3 = Verify.getBoolean()) {i++;}
		if (a4 = Verify.getBoolean()) {i++;}
		if (a5 = Verify.getBoolean()) {i++;}
		if (a6 = Verify.getBoolean()) {i++;}
		if (a7 = Verify.getBoolean()) {i++;}
		if (a8 = Verify.getBoolean()) {i++;}

		//System.out.println(i);
	}                                  
	public void experiment2_bdd() {
		int i = 0;
		if (a1)  {i++;}
		if (a2)  {i++;}
		if (a3)  {i++;}
		if (a4)  {i++;}
		if (a5)  {i++;}
		if (a6)  {i++;}
		if (a7)  {i++;}
		if (a8)  {i++;}
		
		//Verify.breakTransition();
		/*
		 * If the artificial transition break above is 
		 * not enabled there will be no state merging
		 * after the last BDD-ChoiceGenerator (on a8).
		 * This means that every number (except 0 and 8)
		 * will be printed twice.
		 */
		System.out.println(i);
		
		//Debug.printBDDshort(); 
		//works, but the bdds get too long for console printout
	}
	/**
	 * This method adds the location of the classfile of this class as a classpath configuration option to the configuration array.
	 * In fact it creates a new array with one additional entry.
	 * @param originalArgs
	 * @return
	 */
	private String[] addCurrentClassLocationToArgs(String[] originalArgs) {
		String[] args = new String[originalArgs.length + 1];
		System.arraycopy(originalArgs, 0, args, 0, originalArgs.length);
		args[args.length-1] = "+classpath+=;build/examples/";
		return args;
	}
}