Program: 100630
Project: 100630
Buggy source:
@Override public void write(final File filename) throws DITAOTException {
  OutputStream out=null;
  try {
    out=new FileOutputStream(filename);
    final XMLSerializer serializer=XMLSerializer.newInstance(out);
    final Transformer transformer=serializer.getTransformerHandler().getTransformer();
    transformer.setOutputProperty("String_Node_Str","String_Node_Str");
    transformer.setOutputProperty("String_Node_Str","String_Node_Str");
    transformer.setOutputProperty("String_Node_Str","String_Node_Str");
    transformer.setOutputProperty(javax.xml.transform.OutputKeys.INDENT,"String_Node_Str");
    serializer.writeStartDocument();
    serializer.writeStartElement("String_Node_Str");
    serializer.writeStartElement("String_Node_Str");
    serializer.writeStartElement("String_Node_Str");
    serializer.writeAttribute("String_Node_Str","String_Node_Str");
    serializer.writeAttribute("String_Node_Str","String_Node_Str");
    serializer.writeEndElement();
    serializer.writeComment("String_Node_Str");
    serializer.writeEndElement();
    serializer.writeStartElement("String_Node_Str");
    serializer.writeStartElement("String_Node_Str");
    final int termNum=termList.size();
    for (    final IndexTerm term : termList) {
      outputIndexTerm(term,serializer);
    }
    serializer.writeEndElement();
    serializer.writeEndElement();
    serializer.writeEndElement();
    serializer.writeEndDocument();
  }
 catch (  final Exception e) {
    throw new DITAOTException(e);
  }
 finally {
    if (out != null) {
      try {
        out.close();
      }
 catch (      final IOException e) {
        logger.error(e.getMessage(),e);
      }
    }
  }
}

Fixed version (ground truth):
@Override public void write(final File filename) throws DITAOTException {
  OutputStream out=null;
  try {
    out=new FileOutputStream(filename);
    final XMLSerializer serializer=XMLSerializer.newInstance(out);
    final Transformer transformer=serializer.getTransformerHandler().getTransformer();
    transformer.setOutputProperty("String_Node_Str","String_Node_Str");
    transformer.setOutputProperty("String_Node_Str","String_Node_Str");
    transformer.setOutputProperty("String_Node_Str","String_Node_Str");
    transformer.setOutputProperty(javax.xml.transform.OutputKeys.INDENT,"String_Node_Str");
    serializer.writeStartDocument();
    serializer.writeStartElement("String_Node_Str");
    serializer.writeStartElement("String_Node_Str");
    serializer.writeStartElement("String_Node_Str");
    serializer.writeAttribute("String_Node_Str","String_Node_Str");
    serializer.writeAttribute("String_Node_Str","String_Node_Str");
    serializer.writeEndElement();
    serializer.writeComment("String_Node_Str");
    serializer.writeEndElement();
    serializer.writeStartElement("String_Node_Str");
    serializer.writeStartElement("String_Node_Str");
    for (    final IndexTerm term : termList) {
      outputIndexTerm(term,serializer);
    }
    serializer.writeEndElement();
    serializer.writeEndElement();
    serializer.writeEndElement();
    serializer.writeEndDocument();
  }
 catch (  final Exception e) {
    throw new DITAOTException(e);
  }
 finally {
    if (out != null) {
      try {
        out.close();
      }
 catch (      final IOException e) {
        logger.error(e.getMessage(),e);
      }
    }
  }
}