On branch unif23Full

Changes to be committed:
	modified:   Makefile
	modified:   src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java

Makefile

@@ -1,3 +1,16 @@
+full:
+	mvn -DskipTests package
+	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_full.jar
+
+NoMinMax:
+	mvn -DskipTests package
+	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_NoMinMax.jar
+
+NoOpt:
+	mvn -DskipTests package
+	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_NoOpt.jar
+
 NoOptParallel:
 	mvn -DskipTests package
 	cp target/JavaTXcompiler-0.1-jar-with-dependencies.jar target/JavaTXcompiler-0.1-jar-with-dependencies_NoOptParallel.jar
+

pom.xml

@@ -54,8 +54,8 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 				<version>3.8.0</version>
 				<configuration>
 					<compilerArgs>--enable-preview</compilerArgs>
-                    <source>21</source>
+                    <source>19</source>
-                    <target>21</target>
+                    <target>19</target>
                 </configuration>
 			</plugin>
 			<plugin>

src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java

@@ -70,7 +70,7 @@ public class JavaTXCompiler {
 
 	//public static JavaTXCompiler INSTANCE;
     final CompilationEnvironment environment;
-	Boolean resultmodel = true;
+	Boolean resultmodel = false;
     public final Map<File, SourceFile> sourceFiles = new HashMap<>();
     Boolean log = false; //gibt an ob ein Log-File nach System.getProperty("user.dir")+""/logFiles/"" geschrieben werden soll?
     public volatile UnifyTaskModel usedTasks = new UnifyTaskModel();
@@ -88,8 +88,7 @@ public class JavaTXCompiler {
 		this(sourceFiles, null);
 	}
     public JavaTXCompiler(List<File> sources, List<File> contextPath) throws IOException, ClassNotFoundException {
-    	//statistics = new FileWriter(new File(System.getProperty("user.dir") + "/" + sources.get(0).getName() + "_"+ new Timestamp(System.currentTimeMillis())));
+    	statistics = new FileWriter(new File(System.getProperty("user.dir") + "/" + sources.get(0).getName() + "_"+ new Timestamp(System.currentTimeMillis())));
-		statistics = new OutputStreamWriter(new NullOutputStream());
     	statistics.write("test");
         if(contextPath == null || contextPath.isEmpty()){
         	//When no contextPaths are given, the working directory is the sources root

src/main/java/de/dhbwstuttgart/typeinference/unify/RuleSet.java

@@ -44,14 +44,14 @@ import org.apache.commons.io.output.NullOutputStream;
  */
 public class RuleSet implements IRuleSet{
 	
-	WriterActiveObject logFile;
+	Writer logFile;
 	
 	public RuleSet() {
 		super();
-		logFile = new WriterActiveObject(new OutputStreamWriter(new NullOutputStream()));
+		logFile = new OutputStreamWriter(new NullOutputStream());
 	}
 	
-	RuleSet(WriterActiveObject logFile) {
+	RuleSet(Writer logFile) {
 		this.logFile = logFile;
 	}
 	
@@ -867,8 +867,14 @@ public class RuleSet implements IRuleSet{
         								   UnifyType r = x.getRhsType();
         								   if (r instanceof PlaceholderType) { ((PlaceholderType)r).disableWildcardtable(); }
 								     } );
-		logFile.write("FUNgreater: " + pair + "\n");
+		try {
-		logFile.write("FUNred: " + result + "\n");
+			logFile.write("FUNgreater: " + pair + "\n");
+				logFile.write("FUNred: " + result + "\n");
+				logFile.flush();
+			}
+		catch (IOException e) {
+			System.out.println("logFile-Error");
+		}
 		return Optional.of(result);
 	}
 	
@@ -911,10 +917,14 @@ public class RuleSet implements IRuleSet{
 									   UnifyType r = x.getRhsType();
 									   if (r instanceof PlaceholderType) { ((PlaceholderType)r).disableWildcardtable(); }
 									 } );
-
+		try {
-		logFile.write("FUNgreater: " + pair + "\n");
+			logFile.write("FUNgreater: " + pair + "\n");
-		logFile.write("FUNgreater: " + result + "\n");
+			logFile.write("FUNgreater: " + result + "\n");
-
+			logFile.flush();
+		}
+	catch (IOException e) {
+		System.out.println("lofFile-Error");
+	}
 		return Optional.of(result);
 	}
 
@@ -957,9 +967,14 @@ public class RuleSet implements IRuleSet{
 		   							   UnifyType r = x.getRhsType();
 		   							   if (r instanceof PlaceholderType) { ((PlaceholderType)r).disableWildcardtable(); }
 									 } );
-
+		try {
-		logFile.write("FUNgreater: " + pair + "\n");
+			logFile.write("FUNgreater: " + pair + "\n");
-		logFile.write("FUNsmaller: " + result + "\n");
+			logFile.write("FUNsmaller: " + result + "\n");
+			logFile.flush();
+		}
+	catch (IOException e) {
+		System.out.println("lofFile-Error");
+	}
 		return Optional.of(result);
 	}
 

src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnify.java

@@ -1,13 +1,19 @@
 package de.dhbwstuttgart.typeinference.unify;
 
+import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.ForkJoinPool;
 
+import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.typeinference.constraints.Constraint;
+import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
+import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
+import de.dhbwstuttgart.typeinference.unify.model.FiniteClosure;
 import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
 
 public class TypeUnify {
@@ -24,7 +30,7 @@ public class TypeUnify {
 	 * @return
 	 */
 	public Set<Set<UnifyPair>> unify(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
-		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, new WriterActiveObject(logFile), log, 0, ret, usedTasks);
+		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
 		ForkJoinPool pool = new ForkJoinPool();
 		pool.invoke(unifyTask);
 		Set<Set<UnifyPair>> res =  unifyTask.join();
@@ -50,7 +56,7 @@ public class TypeUnify {
 	 * @return
 	 */
 	public UnifyResultModel unifyAsync(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
-		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, new WriterActiveObject(logFile), log, 0, ret, usedTasks);
+		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
 		ForkJoinPool pool = new ForkJoinPool();
 		pool.invoke(unifyTask);
 		return ret;
@@ -69,15 +75,13 @@ public class TypeUnify {
 	 */
 	public UnifyResultModel unifyParallel(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
 		TypeUnifyTask unifyTask = //new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks);
-				new TypeUnifyTask(undConstrains, oderConstraints, fc, true, new WriterActiveObject(logFile), log, 0, ret, usedTasks, statistics);
+				new TypeUnifyTask(undConstrains, oderConstraints, fc, true, logFile, log, 0, ret, usedTasks, statistics);
 		ForkJoinPool pool = new ForkJoinPool();
 		pool.invoke(unifyTask);
 		Set<Set<UnifyPair>> res =  unifyTask.join();
 		try {
 			logFile.write("\nnoShortendElements: " + unifyTask.noShortendElements +"\n");
 			logFile.flush();
-			unifyTask.statisticsFile.write("Backtracking: " + unifyTask.noBacktracking);
-			unifyTask.statisticsFile.write("\nLoops: " + unifyTask.noLoop);
 		}
 		catch (IOException e) {
 			System.err.println("no log-File");
@@ -104,8 +108,8 @@ public class TypeUnify {
 	 * @return
 	 */
 	public Set<Set<UnifyPair>> unifyOderConstraints(Set<UnifyPair> undConstrains, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, Writer logFile, Boolean log, UnifyResultModel ret, UnifyTaskModel usedTasks) {
-		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, false, new WriterActiveObject(logFile), log, 0, ret, usedTasks);
+		TypeUnifyTask unifyTask = new TypeUnifyTask(undConstrains, oderConstraints, fc, false, logFile, log, 0, ret, usedTasks);
-		unifyTask.statisticsFile = statistics;
+		unifyTask.statistics = statistics;
 		Set<Set<UnifyPair>> res = unifyTask.compute();
 		try {
 			logFile.write("\nnoShortendElements: " + unifyTask.noShortendElements +"\n");

src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnify2Task.java

@@ -23,13 +23,13 @@ public class TypeUnify2Task extends TypeUnifyTask {
        TypeUnify2Task(Set<Set<UnifyPair>> setToFlatten, Set<UnifyPair> eq, 
     		   List<Set<Constraint<UnifyPair>>> oderConstraints, 
     		   Set<UnifyPair> nextSetElement, 
-    		   IFiniteClosure fc, boolean parallel, WriterActiveObject logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks,
+    		   IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, 
     		   Set<UnifyPair> methodSignatureConstraintUebergabe, Writer statistics) {
     	   this(setToFlatten, eq, oderConstraints, nextSetElement, fc, parallel, logFile, log, rekTiefe, urm, usedTasks, methodSignatureConstraintUebergabe );
     	   
        }
        
-       public TypeUnify2Task(Set<Set<UnifyPair>> setToFlatten, Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, Set<UnifyPair> nextSetElement, IFiniteClosure fc, boolean parallel, WriterActiveObject logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, Set<UnifyPair> methodSignatureConstraintUebergabe) {
+       public TypeUnify2Task(Set<Set<UnifyPair>> setToFlatten, Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, Set<UnifyPair> nextSetElement, IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, Set<UnifyPair> methodSignatureConstraintUebergabe) {
                super(eq, oderConstraints, fc, parallel, logFile, log, rekTiefe, urm, usedTasks);
                this.setToFlatten = setToFlatten;
                this.nextSetElement = nextSetElement;
@@ -64,6 +64,13 @@ public class TypeUnify2Task extends TypeUnifyTask {
        	}
        
        public void closeLogFile() {
-           logFile.close();
+
+           try {
+				logFile.close();
+			}
+			catch (IOException ioE) {
+				System.err.println("no log-File" + thNo);
+			}
+           
        }
 }

src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java

@@ -17,12 +17,17 @@ import java.util.concurrent.RecursiveTask;
 import java.util.function.BiFunction;
 import java.util.function.BinaryOperator;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.apache.commons.io.output.NullOutputStream;
 
+import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.exceptions.TypeinferenceException;
 import de.dhbwstuttgart.parser.NullToken;
+import de.dhbwstuttgart.syntaxtree.factory.UnifyTypeFactory;
 import de.dhbwstuttgart.typeinference.constraints.Constraint;
+import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
+import de.dhbwstuttgart.typeinference.result.ResultSet;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IMatch;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IRuleSet;
@@ -42,6 +47,7 @@ import de.dhbwstuttgart.typeinference.unify.model.UnifyType;
 import de.dhbwstuttgart.typeinference.unify.model.WildcardType;
 import de.dhbwstuttgart.util.Pair;
 import de.dhbwstuttgart.typeinference.unify.model.OrderingUnifyPair;
+import de.dhbwstuttgart.core.JavaTXCompiler;
 
 import java.io.File;
 import java.io.FileWriter;
@@ -49,6 +55,8 @@ import java.io.IOException;
 import java.io.OutputStreamWriter;
 import java.io.Writer;
 
+import com.google.common.collect.Ordering;
+
 
 /**
  * Implementation of the type unification algorithm
@@ -74,10 +82,11 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	private static int totalnoOfThread = 0;
 	int thNo;
 	protected boolean one = false;
-	Integer MaxNoOfThreads = 128;
+	Integer MaxNoOfThreads = 8;
 
 	public static final String rootDirectory = System.getProperty("user.dir")+"/test/logFiles/";
-	protected WriterActiveObject logFile;
+	Writer logFile;
+
 	/**
 	 * The implementation of setOps that will be used during the unification
 	 */
@@ -126,7 +135,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	
 	volatile UnifyTaskModel usedTasks;
 	
-	static Writer statisticsFile;
+	static Writer statistics;
 	
 	public TypeUnifyTask() { 
 		rules = new RuleSet();
@@ -147,11 +156,12 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	*/
 	
 	//statistics
-	public TypeUnifyTask(Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, boolean parallel, WriterActiveObject logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, Writer statisticsFile) {
+	public TypeUnifyTask(Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks, Writer statistics) {
 		this(eq,oderConstraints,  fc,  parallel,  logFile,  log,  rekTiefe,  urm,  usedTasks);
-		this.statisticsFile = statisticsFile;
+		this.statistics = statistics;
 	}
-	public TypeUnifyTask(Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, boolean parallel, WriterActiveObject logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks) {
+	public TypeUnifyTask(Set<UnifyPair> eq, List<Set<Constraint<UnifyPair>>> oderConstraints, IFiniteClosure fc, boolean parallel, Writer logFile, Boolean log, int rekTiefe, UnifyResultModel urm, UnifyTaskModel usedTasks) {
+		synchronized (this) { 
 			this.eq = eq;
 			//this.oderConstraints = oderConstraints.stream().map(x -> x.stream().map(y -> new HashSet<>(y)).collect(Collectors.toSet(HashSet::new))).collect(Collectors.toList(ArrayList::new));
 			this.oderConstraintsField = oderConstraints; /*.stream().map(x -> {
@@ -177,11 +187,8 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			thNo = totalnoOfThread;
 			writeLog("thNo2 " + thNo);
 			try {
-				if(log){
+				this.logFile = log ? new FileWriter(new File(System.getProperty("user.dir") + "/logFiles/" + "Thread_"+thNo))
-					this.logFile = new WriterActiveObject(new FileWriter(new File(System.getProperty("user.dir") + "/logFiles/" + "Thread_"+thNo)));
+			                       : new OutputStreamWriter(new NullOutputStream());
-				}else{
-					this.logFile = new WriterActiveObject(new OutputStreamWriter(new NullOutputStream()));
-				}
 				logFile.write("");
 			}
 			catch (IOException e) { 
@@ -206,6 +213,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			this.urm = urm;
 			this.usedTasks = usedTasks;
 			this.usedTasks.add(this);
+		}
 	}
 	
 	/**
@@ -250,7 +258,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	
 	protected Set<Set<UnifyPair>> compute() {
 		if (one) {
-			//System.out.println("two");
+			System.out.println("two");
 		}
 		one = true;
 		Set<UnifyPair> neweq = new HashSet<>(eq);
@@ -263,9 +271,12 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				.collect(Collectors.toCollection(ArrayList::new));
 		Set<Set<UnifyPair>> res = unify(neweq, remainingOderconstraints, fc, parallel, rekTiefeField, new HashSet<>());
 		noOfThread--;
-
+		try {
-		logFile.close();
+			logFile.close();
-
+		}
+		catch (IOException ioE) {
+			System.err.println("no log-File");
+		}
 		if (isUndefinedPairSetSet(res)) { 
 			//fuer debug-Zwecke
 			ArrayList al = res.stream().map(x -> x.stream().collect(Collectors.toCollection(ArrayList::new)))
@@ -648,7 +659,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		//a <. theta, theta <. a oder a =. theta enthalten 
 		
 		//statistics
-		//writeStatistics("\nNumber of Constraints (" + rekTiefe + "): " + topLevelSets.size());
+		writeStatistics("\nNumber of Constraints (" + rekTiefe + "): " + topLevelSets.size());
 		
 		Set<Set<UnifyPair>> oneElems = new HashSet<>();
 		oneElems.addAll(topLevelSets.stream()
@@ -668,7 +679,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		//writeLog("nextSet: " + nextSet.toString());
 		List<Set<UnifyPair>> nextSetasList =new ArrayList<>(nextSet);
 		
-		//writeStatistics(" Start Number of elements ( " /* + nextSetasList.get(0).stream().findFirst().get().getBasePair()*/  +"): (" + rekTiefe + "): " + nextSetasList.size());
+		writeStatistics(" Start Number of elements ( " /* + nextSetasList.get(0).stream().findFirst().get().getBasePair()*/  +"): (" + rekTiefe + "): " + nextSetasList.size());
 
 		/*
 		try {
@@ -786,7 +797,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		while (nextSetasList.size() > 0) {
 			
 			//statistics
-			//writeStatistics(" Actual Number of elements( " + nextSetasList.get(0).stream().findFirst().get().getBasePair() +"): (" + rekTiefe + "): " + nextSetasList.size());
+			writeStatistics(" Actual Number of elements( " + nextSetasList.get(0).stream().findFirst().get().getBasePair() +"): (" + rekTiefe + "): " + nextSetasList.size());
 			Set<UnifyPair> a_last = a;
 			
 			/* Liste der Faelle für die parallele Verarbeitung 
@@ -806,7 +817,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			writeLog("nextSet: " + nextSet.toString());
 			writeLog("nextSetasList: " + nextSetasList.toString());
 			
-			/* staistics Nextvar an Hand Varianzbestimmung auskommentieren Anfang 
+			///* staistics Nextvar an Hand Varianzbestimmung auskommentieren Anfang 
 			if (variance == 1) {
 				a = oup.max(nextSetasList.iterator());
 				nextSetasList.remove(a);
@@ -878,10 +889,10 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					}
 				}
 			}
-			Nextvar an Hand Varianzbestimmung auskommentieren Ende */
+			//Nextvar an Hand Varianzbestimmung auskommentieren Ende */
-			a = nextSetasList.remove(0); //statisticsList
+			//a = nextSetasList.remove(0); //statisticsList
 			
-			//writeStatistics(a.toString());
+			writeStatistics(a.toString());
 			if (oderConstraint) {//Methodconstraints werden abgespeichert für die Bytecodegenerierung von Methodenaufrufen
 				methodSignatureConstraint.addAll(((Constraint<UnifyPair>)a).getmethodSignatureConstraint());
 				//System.out.println("ERSTELLUNG: " +methodSignatureConstraint);
@@ -936,9 +947,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					writeLog("a in " + variance + " "+ a);
 					writeLog("nextSetasListRest: " + nextSetasListRest.toString());
 				}
-				while (!nextSetasList.isEmpty()) {
+				while (!nextSetasListRest.isEmpty()) {
-					Set<UnifyPair> nSaL = nextSetasList.remove(0);
+					Set<UnifyPair> nSaL = nextSetasListRest.remove(0);
-					synchronized (this) { //nextSetasList.remove(nSaL);
+					synchronized (this) { nextSetasList.remove(nSaL);
 						writeLog("1 RM" + nSaL.toString());
 					}
 					
@@ -1038,9 +1049,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					writeLog("a in " + variance + " "+ a);
 					writeLog("nextSetasListRest: " + nextSetasListRest.toString());
 				}
-				while (!nextSetasList.isEmpty()) {
+				while (!nextSetasListRest.isEmpty()) {
-					Set<UnifyPair> nSaL = nextSetasList.remove(0);
+					Set<UnifyPair> nSaL = nextSetasListRest.remove(0);
-					synchronized (this) { //nextSetasList.remove(nSaL);
+					synchronized (this) { nextSetasList.remove(nSaL);
 						writeLog("-1 RM" + nSaL.toString());
 					}
 					
@@ -1140,9 +1151,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					writeLog("a in " + variance + " "+ a);
 					writeLog("nextSetasListRest: " + nextSetasListRest.toString());
 				}
-		    	while (!nextSetasList.isEmpty()) {
+		    	while (!nextSetasListRest.isEmpty()) {
-		    		Set<UnifyPair> nSaL = nextSetasList.remove(0);
+		    		Set<UnifyPair> nSaL = nextSetasListRest.remove(0);
-		    		//nextSetasList.remove(nSaL); //PL einkommentiert 20-02-03
+		    		nextSetasList.remove(nSaL); //PL einkommentiert 20-02-03
 		    		Set<UnifyPair> newEq = new HashSet<>(eq);
 		    		Set<Set<UnifyPair>> newElems = new HashSet<>(elems);
 		    		List<Set<Constraint<UnifyPair>>> newOderConstraints = new ArrayList<>(oderConstraints);
@@ -1202,9 +1213,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 		    }}}
 			
 			//Ab hier alle parallele Berechnungen wieder zusammengeführt.
-			//if (hilf == 1)
+			if (hilf == 1)
-				//System.out.println();
+				System.out.println();
-			//writeStatistics("Zusammengeführt(" + rekTiefe + "): " +  nextSetasList.size());
+			writeStatistics("Zusammengeführt(" + rekTiefe + "): " +  nextSetasList.size());
 			if (oderConstraint) {//Wenn weiteres Element nextSetasList genommen wird, muss die vorherige methodsignatur geloescht werden
 				methodSignatureConstraint.removeAll(((Constraint<UnifyPair>)a).getmethodSignatureConstraint());
 				//System.out.println("REMOVE: " +methodSignatureConstraint);
@@ -1316,7 +1327,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 							//wenn korrektes Ergebnis gefunden alle Fehlerfaelle loeschen
 							result = par_res;
 							if (!par_res.isEmpty() && par_res.iterator().next() instanceof WildcardType) {
-								//System.out.println("");
+								System.out.println("");
 							}
 						}
 						else { 
@@ -1332,7 +1343,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 					//break;
 				}
 				
-			/* auskommentiert um alle Max und min Betrachtung auszuschalten ANFANG 
+			// /* auskommentiert um alle Max und min Betrachtung auszuschalten ANFANG 
 			if (!result.isEmpty() && (!isUndefinedPairSetSet(res) || !aParDef.isEmpty())) {
 				if (nextSetasList.iterator().hasNext() && nextSetasList.iterator().next().stream().filter(x -> x.getLhsType().getName().equals("B")).findFirst().isPresent() && nextSetasList.size()>1) 
 					System.out.print("");
@@ -1469,7 +1480,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				writeLog("a: " + rekTiefe + " variance: " + variance + a.toString());
 				}
 			}
-			 auskommentiert um alle Max und min Betrachtung auszuschalten ENDE */ 
+			 //auskommentiert um alle Max und min Betrachtung auszuschalten ENDE */ 
 			
 			if (isUndefinedPairSetSet(res) && aParDef.isEmpty()) {
 				int nofstred= 0;
@@ -1502,9 +1513,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 									return new Pair<>(su, x.getGroundBasePair());})
 						.collect(Collectors.toCollection(HashSet::new));
 				if (res.size() > 1) {
-					//System.out.println();
+					System.out.println();
 				}
-				/* statistics no erase
+				// /* statistics no erase
 				writeLog("nextSetasList vor filter-Aufruf: " + nextSetasList);
 				if (!oderConstraint) {//PL 2023-02-08 eingefuegt: Bei oderconstraints sind Subststitutionen nicht als Substitutionen in idesem Sinne zu sehen
 					nextSetasList = nextSetasList.stream().filter(x -> {
@@ -1517,7 +1528,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 							.collect(Collectors.toCollection(ArrayList::new));
 				}
 				writeLog("nextSetasList nach filter-Aufruf: " + nextSetasList);
-				*/
+				// */
 				nofstred = nextSetasList.size();
 				//NOCH NICHT korrekt PL 2018-10-12
 				//nextSetasList = nextSetasList.stream().filter(y -> couldBecorrect(reducedUndefResSubstGroundedBasePair, y))
@@ -1535,11 +1546,11 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				writeLog("Number of all erased Elements (undef): " + noAllErasedElements.toString());
 				noBacktracking++;
 				writeLog("Number of Backtracking: " + noBacktracking);
-				//writeStatistics("Number of erased elements: " + (len - nextSetasList.size()));
+				writeStatistics("Number of erased elements: " + (len - nextSetasList.size()));
-				//writeStatistics("Number of Backtracking: " + noBacktracking);
+				writeStatistics("Number of Backtracking: " + noBacktracking);
-				//System.out.println("");
+				System.out.println("");
 			}
-			else //writeStatistics("res: " + res.toString());
+			else writeStatistics("res: " + res.toString());
 			//if (nextSetasList.size() == 0 && isUndefinedPairSetSet(result) && nextSet.size() > 1) { 
 			//	return result;
 			//}
@@ -1548,9 +1559,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			//}
 			//else result.stream().filter(y -> !isUndefinedPairSet(y));
 			writeLog("res: " + res.toString());
-			//writeStatistics("  End Number of Elements (" + rekTiefe + "): " + nextSetasList.size());
+			writeStatistics("  End Number of Elements (" + rekTiefe + "): " + nextSetasList.size());
 			noLoop++;
-			//writeStatistics("Number of Loops: " + noLoop);
+			writeStatistics("Number of Loops: " + noLoop);
 		}
 		//2020-02-02: if (variance ==2) Hier Aufruf von filterOverriding einfuegen
 		writeLog("Return computeCR: " + result.toString());
@@ -2046,7 +2057,7 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 				//System.out.println(pair);
 				if (first) { //writeLog(pair.toString()+"\n");
 					if (((PlaceholderType)(pair.getLhsType())).getName().equals("AR")) {
-						//System.out.println("AR");
+						System.out.println("AR");
 					}
 					Set<Set<UnifyPair>> x1 = unifyCase1(pair, fc);
 					if (pairOp == PairOperator.SMALLERNEQDOT) {
@@ -2598,25 +2609,34 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 	}
 	
 	void writeLog(String str) {
+		synchronized ( this ) { 
 		if (log && finalresult) {
-			logFile.write("Thread no.:" + thNo + "\n"
+			try {
-					+ "noOfThread:" + noOfThread + "\n"
+				logFile.write("Thread no.:" + thNo + "\n");
-					+ "parallel:" + parallel + "\n"
+				logFile.write("noOfThread:" + noOfThread + "\n");
-					+ str+"\n\n"
+				logFile.write("parallel:" + parallel + "\n");
-			);
+				logFile.write(str+"\n\n");
-		}
+				logFile.flush();
+			
+			}
+			catch (IOException e) { 
+				System.err.println("kein LogFile");
+			}
+			}
+	}
 	}
 	
 	void writeStatistics(String str) {
 		if (finalresult) {
+		synchronized ( this ) { 
 			try {
-				statisticsFile.write("Thread No. " + thNo + ": " + str + "\n");
+				statistics.write(str + "\n");
-				statisticsFile.flush();
+				statistics.flush();
 			
 			}
 			catch (IOException e) { 
 				System.err.println("kein StatisticsFile");
 			}
-	}
+	}}
 	}
 }

src/main/java/de/dhbwstuttgart/typeinference/unify/WriterActiveObject.java

@@ -1,35 +0,0 @@
-package de.dhbwstuttgart.typeinference.unify;
-
-import java.io.IOException;
-import java.io.Writer;
-import java.util.concurrent.ForkJoinPool;
-
-public class WriterActiveObject {
-    private Writer writer;
-    private ForkJoinPool pool = new ForkJoinPool(1, ForkJoinPool.defaultForkJoinWorkerThreadFactory, null, true);
-
-    public WriterActiveObject(Writer writer){
-        this.writer = writer;
-    }
-
-    public void close(){
-        pool.execute(()->{
-            try {
-                writer.close();
-            } catch (IOException e) {
-                System.out.println(e.getMessage());
-            }
-        });
-    }
-
-    public void write(String message){
-        pool.execute(()->{
-            try {
-                writer.write(message);
-                writer.flush();
-            } catch (IOException e) {
-                System.out.println(e.getMessage());
-            }
-        });
-    }
-}

src/test/java/typeinference/UnifyTest.java

@@ -1,27 +1,13 @@
 package typeinference;
 
-import com.google.common.base.Optional;
 import de.dhbwstuttgart.bytecode.genericsGeneratorTypes.GenericGenratorResultForSourceFile;
 import de.dhbwstuttgart.core.JavaTXCompiler;
-import de.dhbwstuttgart.parser.scope.JavaClassName;
-import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
-import de.dhbwstuttgart.syntaxtree.Constructor;
 import de.dhbwstuttgart.syntaxtree.SourceFile;
-import de.dhbwstuttgart.syntaxtree.factory.UnifyTypeFactory;
 import de.dhbwstuttgart.syntaxtree.visual.ASTPrinter;
 import de.dhbwstuttgart.syntaxtree.visual.ASTTypePrinter;
 import de.dhbwstuttgart.typedeployment.TypeInsert;
 import de.dhbwstuttgart.typedeployment.TypeInsertFactory;
-import de.dhbwstuttgart.typeinference.constraints.Constraint;
-import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
-import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
-import de.dhbwstuttgart.typeinference.unify.TypeUnify;
-import de.dhbwstuttgart.typeinference.unify.UnifyResultModel;
-import de.dhbwstuttgart.typeinference.unify.UnifyTaskModel;
-import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
-import de.dhbwstuttgart.typeinference.unify.model.*;
-import org.apache.commons.io.output.NullWriter;
 import org.junit.Test;
 
 import java.io.File;
@@ -38,60 +24,7 @@ import java.util.Set;
 public class UnifyTest {
 
     public static final String rootDirectory = System.getProperty("user.dir")+"/resources/javFiles/";
-
+/*
-    @Test
-    public void unifyTest(){
-        UnifyType type1 = new PlaceholderType("a");
-        UnifyType type2 = new ReferenceType("List", new TypeParams(new PlaceholderType("b")));
-        UnifyPair pair1 = new UnifyPair(type1, type2, PairOperator.SMALLERDOT);
-
-        type1 = new ReferenceType("List", new TypeParams(new PlaceholderType("c")));
-        type2 = new PlaceholderType("a");
-        UnifyPair pair2 = new UnifyPair(type1, type2, PairOperator.SMALLERDOT);
-
-        type1 = new ReferenceType("String");
-        type2 = new PlaceholderType("b");
-        UnifyPair pair3 = new UnifyPair(type1, type2, PairOperator.SMALLERDOT);
-
-        type1 = new ReferenceType("Integer");
-        type2 = new PlaceholderType("c");
-        UnifyPair pair4 = new UnifyPair(type1, type2, PairOperator.SMALLERDOT);
-
-        Set<UnifyPair> undConstraints = new HashSet<>();
-        undConstraints.add(pair1);
-        undConstraints.add(pair2);
-        undConstraints.add(pair3);
-        undConstraints.add(pair4);
-
-        List<Set<Constraint<UnifyPair>>> oderConstraints = new ArrayList<>();
-
-        Set<UnifyPair> constraints = new HashSet<>();
-        type1 = new ReferenceType("Object");
-        type2 = new ReferenceType("String");
-        constraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
-        type1 = new ReferenceType("Number");
-        type2 = new ReferenceType("Integer");
-        constraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
-        type1 = new ReferenceType("Object");
-        type2 = new ReferenceType("Number");
-        constraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
-        type1 = new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("X")));
-        type2 = new ReferenceType("List", new TypeParams(new PlaceholderType("X")));
-        constraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
-        type1 = new ReferenceType("Object");
-        type2 = new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("X")));
-        constraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
-
-        IFiniteClosure finiteClosure = new FiniteClosure(constraints, new NullWriter());
-
-        TypeUnify unifyAlgo = new TypeUnify();
-        ConstraintSet< Pair> cons = new ConstraintSet<>();
-        UnifyResultModel urm = new UnifyResultModel(cons, finiteClosure);
-        UnifyTaskModel tasks = new UnifyTaskModel();
-        Set<Set<UnifyPair>> solution = unifyAlgo.unify(undConstraints, oderConstraints, finiteClosure, new NullWriter(), false, urm, tasks);
-        System.out.println(solution.size());
-    }
-    /*
     @Test
     public void finiteClosure() throws IOException, ClassNotFoundException {
         execute(new File(rootDirectory+"fc.jav"));