Program: 115265
Project: 115265
Buggy source:
protected Element invokeInternal(Element requestElement,Document document) throws Exception {
  System.out.println("String_Node_Str");
  NodeList subjects=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
  try {
    if (subjects.getLength() > 0) {
      System.out.println("String_Node_Str" + subjects.getLength());
      logNodeList(subjects);
      for (int i=0; i < subjects.getLength(); i++) {
        Node childNode=subjects.item(i);
        UserAccountBean user=this.getUserAccount();
        Role r=user.getActiveStudyRole();
        if (!this.canUserRegisterSubject(user)) {
          throw new CCSystemFaultException("String_Node_Str");
        }
        RegisterSubjectBean subjectBean=subjectService.generateSubjectBean(user,childNode);
        NodeList performedMilestones=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
        if (performedMilestones.getLength() > 0) {
          for (int j=0; j < performedMilestones.getLength(); j++) {
            Node milestone=performedMilestones.item(j);
            subjectBean=subjectService.attachStudyIdentifiers(subjectBean,milestone);
          }
        }
        SubjectBean finalSubjectBean=subjectService.generateSubjectBean(subjectBean);
      }
    }
  }
 catch (  Exception npe) {
  }
  return this.mapRegisterSubjectConfirmation("String_Node_Str");
}

Fixed version (ground truth):
protected Element invokeInternal(Element requestElement,Document document) throws Exception {
  System.out.println("String_Node_Str");
  NodeList subjects=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
  try {
    if (subjects.getLength() > 0) {
      System.out.println("String_Node_Str" + subjects.getLength());
      logNodeList(subjects);
      for (int i=0; i < subjects.getLength(); i++) {
        Node childNode=subjects.item(i);
        UserAccountBean user=this.getUserAccount();
        Role r=user.getActiveStudyRole();
        if (!this.canUserRegisterSubject(user)) {
          throw new CCSystemFaultException("String_Node_Str");
        }
        RegisterSubjectBean subjectBean=subjectService.generateSubjectBean(user,childNode);
        NodeList performedMilestones=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
        if (performedMilestones.getLength() > 0) {
          for (int j=0; j < performedMilestones.getLength(); j++) {
            Node milestone=performedMilestones.item(j);
            subjectBean=subjectService.attachStudyIdentifiers(subjectBean,milestone);
          }
        }
        SubjectBean finalSubjectBean=subjectService.generateSubjectBean(subjectBean);
        SubjectBean checkSubjectBean=getSubjectDao().findByUniqueIdentifier(finalSubjectBean.getUniqueIdentifier());
        if (checkSubjectBean.getId() <= 0) {
          throw new CCBusinessFaultException("String_Node_Str" + "String_Node_Str");
        }
      }
    }
  }
 catch (  Exception npe) {
    if (npe.getClass().getName().startsWith("String_Node_Str")) {
      System.out.println("String_Node_Str" + npe.getClass().getName());
      OpenClinicaException ope=(OpenClinicaException)npe;
      return mapSubjectErrorConfirmation("String_Node_Str",ope);
    }
 else {
      System.out.println("String_Node_Str" + npe.getClass().getName());
      return mapSubjectErrorConfirmation(npe.getMessage());
    }
  }
  return this.mapRegisterSubjectConfirmation("String_Node_Str");
}