Program: 50047
Project: 50047
Buggy source:
@Override public void startElement(String uri,String localName,String qName,Attributes attributes) throws SAXException {
  super.startElement(uri,localName,qName,attributes);
  log.debug("String_Node_Str" + uri + "String_Node_Str"+ localName+ "String_Node_Str");
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    hello=new Hello();
    capabilities=new ArrayList<Capability>();
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideCapabilityTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideSessionIdTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    reply=new Reply();
    messageId=attributes.getValue("String_Node_Str");
    if (messageId == null)     throw new SAXException(new NetconfProtocolException("String_Node_Str"));
    reply.setMessageId(messageId);
    reply.setOk(false);
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideDataTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    reply.setOk(true);
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    error=new Error();
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorTypeTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorTagTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorSeverityTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorAppTagTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorPathTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorMessageTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorInfoTag=true;
  }
}

Fixed version (ground truth):
@Override public void startElement(String uri,String localName,String qName,Attributes attributes) throws SAXException {
  super.startElement(uri,localName,qName,attributes);
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    hello=new Hello();
    capabilities=new ArrayList<Capability>();
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideCapabilityTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideSessionIdTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    reply=new Reply();
    messageId=attributes.getValue("String_Node_Str");
    if (messageId == null)     throw new SAXException(new NetconfProtocolException("String_Node_Str"));
    reply.setMessageId(messageId);
    reply.setOk(false);
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideDataTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    reply.setOk(true);
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    error=new Error();
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorTypeTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorTagTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorSeverityTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorAppTagTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorPathTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorMessageTag=true;
  }
  if (localName.equalsIgnoreCase("String_Node_Str")) {
    insideErrorInfoTag=true;
  }
}