diff --git a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
index 0be50fb5..6197aa19 100644
--- a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
+++ b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
@@ -39,7 +39,7 @@ import de.dhbwstuttgart.typeinference.unify.UnifyResultModel;
 
 import java.io.File;
 import java.io.FileOutputStream;
-import java.io.FileWriter;
+//import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
 import java.util.*;
@@ -287,7 +287,11 @@ public class JavaTXCompiler {
         Set<Set<UnifyPair>> results = new HashSet<>();
         UnifyResultModel urm = null;
         try {
-			Writer logFile = new FileWriter(new File(System.getProperty("user.dir")+"/src/test/java/logFiles/"+"log_"+sourceFiles.keySet().iterator().next().getName()));
+			Writer logFile = new Writer() {//new FileWriter(new File(System.getProperty("user.dir")+"/src/test/java/logFiles/"+"log_"+sourceFiles.keySet().iterator().next().getName()));
+				public void  close() {}
+				public void  flush() {}
+				public void  write(char[] cbuf, int off, int len) { }
+			};
 			
 			IFiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses,logFile);
 			System.out.println(finiteClosure);
@@ -423,7 +427,11 @@ public class JavaTXCompiler {
         final ConstraintSet<Pair> cons = getConstraints();
         Set<Set<UnifyPair>> results = new HashSet<>();
         try {
-			Writer logFile = new FileWriter(new File(System.getProperty("user.dir")+"/src/test/java/logFiles/"+"log_"+sourceFiles.keySet().iterator().next().getName()));
+			Writer logFile = new Writer() {//new FileWriter(new File(System.getProperty("user.dir")+"/src/test/java/logFiles/"+"log_"+sourceFiles.keySet().iterator().next().getName()));
+				public void  close() {}
+				public void  flush() {}
+				public void  write(char[] cbuf, int off, int len) { }
+			};
 			
 			IFiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses,logFile);
 			System.out.println(finiteClosure);
diff --git a/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java b/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
index 1d383c66..f55c742a 100644
--- a/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
+++ b/src/main/java/de/dhbwstuttgart/typeinference/unify/TypeUnifyTask.java
@@ -42,7 +42,7 @@ import de.dhbwstuttgart.typeinference.unify.model.OrderingUnifyPair;
 import de.dhbwstuttgart.typeinference.unify.model.Pair;
 
 import java.io.File;
-import java.io.FileWriter;
+//import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
 
@@ -160,9 +160,13 @@ public class TypeUnifyTask extends RecursiveTask<Set<Set<UnifyPair>>>  {
 			thNo = totalnoOfThread;
 			writeLog("thNo2 " + thNo);
 			try {
-				this.logFile = new FileWriter(new File(System.getProperty("user.dir")+"/src/test/java/logFiles/"+"Thread_"+thNo));
+				this.logFile = new Writer() {//FileWriter(new File(System.getProperty("user.dir")+"/src/test/java/logFiles/"+"Thread_"+thNo));
+					public void  close() {}
+					public void  flush() {}
+					public void  write(char[] cbuf, int off, int len) { }
+				};
 			}
-			catch (IOException e) { 
+			catch (Exception e) { 
 				System.err.println("log-File nicht vorhanden");
 			}
 			rules = new RuleSet(logFile);