fix to step into

rt-key/src/main/java/edu/kit/iti/formal/psdbg/StepIntoCommand.java → rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/dbg/StepIntoCommand.java

-package edu.kit.iti.formal.psdbg;
-
-import edu.kit.iti.formal.psdbg.interpreter.dbg.*;
+package edu.kit.iti.formal.psdbg.interpreter.dbg;
 
 public class StepIntoCommand<T> extends DebuggerCommand<T> {
     @Override
     public void execute(DebuggerFramework<T> dbg) {
         PTreeNode<T> statePointer = dbg.getStatePointer();
         assert statePointer != null;
-        if (statePointer.isAtomic()) {
+        if (statePointer.isAtomic()) { // atomic same as step over
             new StepOverCommand<T>().execute(dbg);
         } else {
-            dbg.releaseUntil(new Blocker.CounterBlocker(1));
+            if (statePointer.getStepInto() != null) { // if there is already an step into take it!
+                dbg.setStatePointer(statePointer.getStepInto());
+            } else {
+                if (!statePointer.isLastNode()) { // execute non last commands, one step wide!
+                    dbg.releaseUntil(new Blocker.CounterBlocker(1));
+                }
+            }
         }
     }
 }