diff --git a/rt-key/src/main/java/edu/kit/iti/formal/psdbg/interpreter/KeyInterpreter.java b/rt-key/src/main/java/edu/kit/iti/formal/psdbg/interpreter/KeyInterpreter.java
index f1805d9fb24b766430cc46679b0ea38767357744..2547f8fab23c94e1d937e71318b3fcd8a4a1ea53 100644
--- a/rt-key/src/main/java/edu/kit/iti/formal/psdbg/interpreter/KeyInterpreter.java
+++ b/rt-key/src/main/java/edu/kit/iti/formal/psdbg/interpreter/KeyInterpreter.java
@@ -99,7 +99,6 @@ public class KeyInterpreter extends Interpreter<KeyData> {
         logger.debug(String.format("Beginning of suspicion execution of %s", statements));
         GoalNode<KeyData> goalNode = getSelectedNode();
         pushState(new State<>(goalNode.deepCopy())); // copy for later prove
-
         List<Visitor> backupExitListener = getExitListeners(),
                 backupEntryListener = getEntryListeners();
         try {
diff --git a/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/Interpreter.java b/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/Interpreter.java
index 2c27a55420908ad5f7b2ee2833bd8971feae187f..862d38615eec8173013779e8b5d12e27f4f1d0fc 100644
--- a/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/Interpreter.java
+++ b/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/Interpreter.java
@@ -454,13 +454,13 @@ public class Interpreter<T> extends DefaultASTVisitor<Object>
         exitScope(casesStatement);
         return null;
     }*/
-    @Override
+   /* @Override
     public Object visit(TryCase TryCase) {
         enterScope(TryCase);
-
+        //is handled by KeYInterpreter
         exitScope(TryCase);
         return false;
-    }
+    }*/
 
     /**
      * Evaluate a match in a specific goal
diff --git a/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/data/GoalNode.java b/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/data/GoalNode.java
index 54e767070f654a1a7ae590e11624c21722a5bb4f..d7b734ac6292514a355222e51bb88518efdca916 100644
--- a/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/data/GoalNode.java
+++ b/rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/data/GoalNode.java
@@ -29,7 +29,7 @@ public class GoalNode<T> {
     private boolean isClosed;
 
     /**
-     * This conctructur will be replaced with concrete one that uses projectedNode
+     *
      *
      * @param parent
      * @param data
@@ -41,6 +41,12 @@ public class GoalNode<T> {
         this.data = data;
         this.isClosed = isClosed;
     }
+    private GoalNode(GoalNode<T> parent, VariableAssignment assignments, T data, boolean isClosed) {
+        this.assignments = assignments.deepCopy();
+        this.parent = parent;
+        this.data = data;
+        this.isClosed = isClosed;
+    }
 
     /**
      * @param varname
@@ -104,8 +110,13 @@ public class GoalNode<T> {
     }
 
     public GoalNode<T> deepCopy() {
-        //TODO method does nothing helpful atm
-        return new GoalNode<T>(parent, data, isClosed);
+        if (parent != null) {
+            return new GoalNode<T>(parent.deepCopy(), data, isClosed);
+        } else {
+            return new GoalNode<T>(parent, assignments.deepCopy(), data, isClosed);
+        }
+
+
     }
 
     public VariableAssignment enterScope(VariableAssignment va) {
diff --git a/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/ScriptArea.java b/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/ScriptArea.java
index 62ea6b2f4907d4ebc28d577129e8be056be0a6a0..9b721a89c720d294b3d04b55eaf811f15fa61fda 100644
--- a/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/ScriptArea.java
+++ b/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/ScriptArea.java
@@ -280,7 +280,7 @@ public class ScriptArea extends BorderPane {
             LOGGER.debug("ScriptArea.updateMainScriptMarker");
 
             if (ms != null && filePath.get().getAbsolutePath().equals(ms.getSourceName())) {
-                System.out.println(ms);
+                LOGGER.debug("ScriptArea.updateIdentifier"+ ms);
                 CharStream stream = CharStreams.fromString(codeArea.getText(), filePath.get().getAbsolutePath());
                 Optional<ProofScript> ps = ms.find(Facade.getAST(stream));
 
diff --git a/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/SequentView.java b/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/SequentView.java
index bea1eade9a2ecf82b7723127a2dfc3084aae3016..624f68199adc827664c5250be1b3088b7bb75de0 100644
--- a/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/SequentView.java
+++ b/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/SequentView.java
@@ -217,7 +217,7 @@ public class SequentView extends CodeArea {
             Match va = m.getMatchings().iterator().next();
             //System.out.println(va);//TODO remove
             for (MatchPath mp : va.values()) {
-                System.out.println(mp.pio());
+                System.out.println("SequentView"+ mp.pio());
                 highlightTerm(mp.pio());
             }
         }
diff --git a/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/Utils.java b/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/Utils.java
index 8680487b645fbed8d825fa425ae5abbe90fb1443..b81038c0bdd6af8b172fd11691aa002b89d29e82 100644
--- a/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/Utils.java
+++ b/ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/Utils.java
@@ -256,9 +256,9 @@ public class Utils {
         alert.setTitle("Proof Closed");
         alert.setHeaderText("The proof is closed");
         alert.setContentText("The proof using " + scriptName + " is closed");
-        alert.setWidth(400);
+        alert.setWidth(500);
         alert.setHeight(400);
-
+        alert.setResizable(true);
         /*StringWriter sw = new StringWriter();
         PrintWriter pw = new PrintWriter(sw);
         ex.printStackTrace(pw);
@@ -318,7 +318,7 @@ public class Utils {
     public static void intoClipboard(String s) {
         Map<DataFormat, Object> map = Collections.singletonMap(DataFormat.PLAIN_TEXT, s);
         Clipboard.getSystemClipboard().setContent(map);
-        System.err.println(s);
+        logger.info("Clipboard "+s);
     }
 
     /**
diff --git a/ui/src/main/resources/edu/kit/iti/formal/psdbg/examples/contraposition/script.kps b/ui/src/main/resources/edu/kit/iti/formal/psdbg/examples/contraposition/script.kps
index 9d2142907d4ac082c731ab105986cfd76702cbd0..baefca7f31dfc9a72fb11ea8edf4de5ce2dd3e48 100644
--- a/ui/src/main/resources/edu/kit/iti/formal/psdbg/examples/contraposition/script.kps
+++ b/ui/src/main/resources/edu/kit/iti/formal/psdbg/examples/contraposition/script.kps
@@ -1,5 +1,14 @@
 // Please select one of the following scripts.
 //
+script testTry(){
+cases{
+    try: impLeft;
+    default:
+        __KEY_MAX_STEPS:= 100;
+        impRight;
+}
+}
+
 script testSMT(){
     smt solver='Z3';
 }