Program: 12008
Project: 12008
Buggy source:
@Override public void endElement(String uri,String localName,String name) throws SAXException {
  Assertion.mustNotBeNull(config,"String_Node_Str");
  Assertion.mustNotBeEmpty(name,"String_Node_Str");
  if (name.equals("String_Node_Str")) {
    config.extInstantiations.add(currentInstantiation);
    currentInstantiation=null;
  }
 else   if (name.equals("String_Node_Str")) {
    config.extArgs.add(currentArg);
    currentArg=null;
  }
 else   if (name.equals("String_Node_Str")) {
    currentArg.patterns.add(currentArgPattern);
    currentArgPattern=null;
  }
 else   if (name.equals("String_Node_Str")) {
    config.extReturns.add(currentReturn);
    currentReturn=null;
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.importList.add(tempValue);
    }
 else     if (currentArg != null) {
      currentArg.importList.add(tempValue);
    }
 else     if (currentReturn != null) {
      currentReturn.importList.add(tempValue);
    }
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.preAssignCode=tempValue;
    }
 else     if (currentArg != null) {
      currentArgPattern.preAssignCode=tempValue;
    }
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.assignCode=tempValue;
    }
 else     if (currentArg != null) {
      currentArgPattern.assignCode=tempValue;
    }
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.postAssignCode=tempValue;
    }
 else     if (currentArg != null) {
      currentArgPattern.postAssignCode=tempValue;
    }
  }
 else   if (name.equals("String_Node_Str")) {
    currentReturn.asserts.add(tempValue);
  }
}

Fixed version (ground truth):
@Override public void endElement(String uri,String localName,String name) throws SAXException {
  Assertion.mustNotBeNull(config,"String_Node_Str");
  Assertion.mustNotBeEmpty(name,"String_Node_Str");
  if (name.equals("String_Node_Str")) {
    config.extInstantiations.add(currentInstantiation);
    currentInstantiation=null;
  }
 else   if (name.equals("String_Node_Str")) {
    config.extArgs.add(currentArg);
    currentArg=null;
  }
 else   if (name.equals("String_Node_Str")) {
    currentArg.patterns.add(currentArgPattern);
    currentArgPattern=null;
  }
 else   if (name.equals("String_Node_Str")) {
    config.extReturns.add(currentReturn);
    currentReturn=null;
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.importList.add(tempValue.toString());
      tempValue=new StringBuilder();
    }
 else     if (currentArg != null) {
      currentArg.importList.add(tempValue.toString());
      tempValue=new StringBuilder();
    }
 else     if (currentReturn != null) {
      currentReturn.importList.add(tempValue.toString());
      tempValue=new StringBuilder();
    }
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.preAssignCode=tempValue.toString();
      tempValue=new StringBuilder();
    }
 else     if (currentArg != null) {
      currentArgPattern.preAssignCode=tempValue.toString();
      tempValue=new StringBuilder();
    }
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.assignCode=tempValue.toString();
      tempValue=new StringBuilder();
    }
 else     if (currentArg != null) {
      currentArgPattern.assignCode=tempValue.toString();
      tempValue=new StringBuilder();
    }
  }
 else   if (name.equals("String_Node_Str")) {
    if (currentInstantiation != null) {
      currentInstantiation.postAssignCode=tempValue.toString();
      tempValue=new StringBuilder();
    }
 else     if (currentArg != null) {
      currentArgPattern.postAssignCode=tempValue.toString();
      tempValue=new StringBuilder();
    }
  }
 else   if (name.equals("String_Node_Str")) {
    currentReturn.asserts.add(tempValue.toString());
    tempValue=new StringBuilder();
  }
}