Program: 123925
Project: 123925
Buggy source:
public void invokeSOAP(String version,String destination,String soapAction,String soapMessage) throws SOAPException, TransformerException, ParserConfigurationException, FileNotFoundException {
  MessageFactory messageFactory=null;
  if (version.equals(SOAP12)) {
    messageFactory=MessageFactory.newInstance(SOAPConstants.SOAP_1_2_PROTOCOL);
  }
 else {
    messageFactory=MessageFactory.newInstance();
  }
  SOAPMessage message=messageFactory.createMessage();
  MimeHeaders mimeHeaders=message.getMimeHeaders();
  mimeHeaders.setHeader("String_Node_Str",soapAction);
  SOAPPart soapPart=message.getSOAPPart();
  ByteArrayInputStream stream=new ByteArrayInputStream(soapMessage.getBytes());
  StreamSource preppedMsgSrc=new StreamSource(stream);
  soapPart.setContent(preppedMsgSrc);
  message.saveChanges();
  SOAPMessage reply=connection.call(message,destination);
  SOAPPart reSoapPart=reply.getSOAPPart();
  SOAPEnvelope reEnvelope=reSoapPart.getEnvelope();
  SOAPHeader reHeader=reEnvelope.getHeader();
  if (reHeader != null) {
    setReHeaderMessage(Doc2StringWithoutDeclare(extractContentAsDocument(reHeader)));
  }
  SOAPBody reBody=reEnvelope.getBody();
  if (reBody.getFault() != null) {
    hasFault=true;
    setReFaultMessage(Doc2StringWithoutDeclare(extractContentAsDocument(reBody)));
    setReBodyMessage(null);
  }
 else {
    hasFault=false;
    if (reBody.getChildNodes().getLength() <= 1) {
      setReBodyMessage(null);
    }
 else {
      setReBodyMessage(Doc2StringWithoutDeclare(extractContentAsDocument(reBody)));
    }
    setReFaultMessage(null);
  }
}

Fixed version (ground truth):
public void invokeSOAP(String version,String destination,String soapAction,String soapMessage) throws SOAPException, TransformerException, ParserConfigurationException, FileNotFoundException {
  MessageFactory messageFactory=null;
  if (version.equals(SOAP12)) {
    messageFactory=MessageFactory.newInstance(SOAPConstants.SOAP_1_2_PROTOCOL);
  }
 else {
    messageFactory=MessageFactory.newInstance();
  }
  SOAPMessage message=messageFactory.createMessage();
  MimeHeaders mimeHeaders=message.getMimeHeaders();
  mimeHeaders.setHeader("String_Node_Str",soapAction);
  SOAPPart soapPart=message.getSOAPPart();
  ByteArrayInputStream stream=new ByteArrayInputStream(soapMessage.getBytes());
  StreamSource preppedMsgSrc=new StreamSource(stream);
  soapPart.setContent(preppedMsgSrc);
  message.saveChanges();
  SOAPMessage reply=connection.call(message,destination);
  SOAPPart reSoapPart=reply.getSOAPPart();
  SOAPEnvelope reEnvelope=reSoapPart.getEnvelope();
  SOAPHeader reHeader=reEnvelope.getHeader();
  if (reHeader != null) {
    setReHeaderMessage(Doc2StringWithoutDeclare(extractContentAsDocument(reHeader)));
  }
  SOAPBody reBody=reEnvelope.getBody();
  if (reBody.getFault() != null) {
    hasFault=true;
    setReFaultMessage(Doc2StringWithoutDeclare(extractContentAsDocument(reBody)));
    setReBodyMessage(null);
  }
 else {
    hasFault=false;
    if (reBody.getChildNodes().getLength() < 1) {
      setReBodyMessage(null);
    }
 else     if (reBody.getChildNodes().getLength() == 1 && reBody.getChildNodes().item(0) instanceof javax.xml.soap.Text) {
      setReBodyMessage(null);
    }
 else {
      setReBodyMessage(Doc2StringWithoutDeclare(extractContentAsDocument(reBody)));
    }
    setReFaultMessage(null);
  }
}