diff --git a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
index beab7c06..8c0c417b 100644
--- a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
+++ b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
@@ -563,11 +563,11 @@ public class JavaTXCompiler {
 		final ConstraintSet<Pair> cons = getConstraints();
 		Set<Set<UnifyPair>> results = new HashSet<>();
 		try {
-			Writer logFile = //new OutputStreamWriter(new NullOutputStream());
+			Writer logFile = new OutputStreamWriter(new NullOutputStream());
 					// new FileWriter(new
 					// File(System.getProperty("user.dir")+"/src/test/resources/logFiles/"+"log_"+sourceFiles.keySet().iterator().next().getName()));
-					new FileWriter(new File(System.getProperty("user.dir") + "/logFiles/" + "log_"
-							+ sourceFiles.keySet().iterator().next().getName()));
+					//new FileWriter(new File(System.getProperty("user.dir") + "/logFiles/" + "log_"
+					//		+ sourceFiles.keySet().iterator().next().getName()));
 			IFiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses, logFile, classLoader);
 			System.out.println(finiteClosure);
 			ConstraintSet<UnifyPair> unifyCons = UnifyTypeFactory.convert(cons);
diff --git a/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java b/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
index 9e95521d..d204ae93 100644
--- a/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
+++ b/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
@@ -174,9 +174,9 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			thNo = totalnoOfThread;
 			writeLog("thNo2 " + thNo);
 			try {
-				this.logFile = //new OutputStreamWriter(new NullOutputStream());
+				this.logFile = new OutputStreamWriter(new NullOutputStream());
 				//new FileWriter(new File(System.getProperty("user.dir")+"/src/test/resources/logFiles/"+"Thread_"+thNo));
-				new FileWriter(new File(System.getProperty("user.dir")+"/logFiles/"+"Thread_"+thNo));
+				//new FileWriter(new File(System.getProperty("user.dir")+"/logFiles/"+"Thread_"+thNo));
 				logFile.write("");
 			}
 			catch (IOException e) { 
diff --git a/src/test/java/AllgemeinTest.java b/src/test/java/AllgemeinTest.java
index 73f29ea9..c937035e 100644
--- a/src/test/java/AllgemeinTest.java
+++ b/src/test/java/AllgemeinTest.java
@@ -39,7 +39,8 @@ public class AllgemeinTest {
 		//String className = "Pair";
 		//String className = "FCTest3";
 		//String className = "Var";
-		String className = "Put";
+		//String className = "Put";
+		String className = "Twice";
 		//PL 2019-10-24: genutzt fuer unterschiedliche Tests
 		path = System.getProperty("user.dir")+"/src/test/resources/AllgemeinTest/" + className + ".jav";
 		//path = System.getProperty("user.dir")+"/src/test/resources/AllgemeinTest/Overloading_Generics.jav";
diff --git a/src/test/java/bytecode/MatrixTest.java b/src/test/java/bytecode/MatrixTest.java
index ce356ece..aafca591 100755
--- a/src/test/java/bytecode/MatrixTest.java
+++ b/src/test/java/bytecode/MatrixTest.java
@@ -28,7 +28,7 @@ public class MatrixTest {
 
 	@Test
 	public void test() throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, ClassNotFoundException, IOException, InstantiationException {
-		path = System.getProperty("user.dir")+"/src/test/resources/bytecode/javFiles/Matrix.jav";
+		path = System.getProperty("user.dir")+"/src/test/resources/bytecode/javFiles/MatrixAL.jav";
 		fileToTest = new File(path);
 		compiler = new JavaTXCompiler(fileToTest);
 		pathToClassFile = System.getProperty("user.dir")+"/src/test/resources/testBytecode/generatedBC/";