Program: 62718
Project: 62718
Buggy source:
/** 
 * This method will persist a number of entity and remove them from the source, return the status of the operation.
 * @param map - HashMap which has data to persist
 * @return status of the Backdoor operation
 */
private static String persist(Map<String,?> map){
  DataBundle bundle=new DataBundle();
  int count=0;
  Set<String> set=map.keySet();
  Iterator<String> itr=set.iterator();
  String type="String_Node_Str";
  while (itr.hasNext()) {
    String key=itr.next();
    Object obj=map.get(key);
    if (obj instanceof AccountAttributes) {
      type="String_Node_Str";
      AccountAttributes accountData=(AccountAttributes)obj;
      bundle.accounts.put(key,accountData);
    }
 else     if (obj instanceof InstructorAttributes) {
      type="String_Node_Str";
      InstructorAttributes instructorData=(InstructorAttributes)obj;
      bundle.instructors.put(key,instructorData);
    }
 else     if (obj instanceof CourseAttributes) {
      type="String_Node_Str";
      CourseAttributes courseData=(CourseAttributes)obj;
      bundle.courses.put(key,courseData);
    }
 else     if (obj instanceof StudentAttributes) {
      type="String_Node_Str";
      StudentAttributes studentData=(StudentAttributes)obj;
      bundle.students.put(key,studentData);
    }
    count++;
    itr.remove();
    System.out.print(key + "String_Node_Str");
    if ("String_Node_Str".equals(type) && count >= MAX_NUMBER_OF_EVALUATION_PER_REQUEST || count >= MAX_NUMBER_OF_ENTITY_PER_REQUEST) {
      break;
    }
  }
  System.out.print(count + "String_Node_Str" + type+ "String_Node_Str"+ map.size()+ "String_Node_Str");
  String status=BackDoor.restoreDataBundle(bundle);
  try {
    Thread.sleep(WAIT_TIME_BETWEEN_REQUEST);
  }
 catch (  InterruptedException e) {
    e.printStackTrace();
  }
  return status;
}

Fixed version (ground truth):
/** 
 * This method will persist a number of entity and remove them from the source, return the status of the operation.
 * @param map - HashMap which has data to persist
 * @return status of the Backdoor operation
 */
private static String persist(Map<String,?> map){
  DataBundle bundle=new DataBundle();
  int count=0;
  String type="String_Node_Str";
  for (  Map.Entry<String,?> entry : map.entrySet()) {
    String key=entry.getKey();
    Object obj=entry.getValue();
    if (obj instanceof AccountAttributes) {
      type="String_Node_Str";
      AccountAttributes accountData=(AccountAttributes)obj;
      bundle.accounts.put(key,accountData);
    }
 else     if (obj instanceof InstructorAttributes) {
      type="String_Node_Str";
      InstructorAttributes instructorData=(InstructorAttributes)obj;
      bundle.instructors.put(key,instructorData);
    }
 else     if (obj instanceof CourseAttributes) {
      type="String_Node_Str";
      CourseAttributes courseData=(CourseAttributes)obj;
      bundle.courses.put(key,courseData);
    }
 else     if (obj instanceof StudentAttributes) {
      type="String_Node_Str";
      StudentAttributes studentData=(StudentAttributes)obj;
      bundle.students.put(key,studentData);
    }
    count++;
    System.out.print(key + "String_Node_Str");
    if ("String_Node_Str".equals(type) && count >= MAX_NUMBER_OF_EVALUATION_PER_REQUEST || count >= MAX_NUMBER_OF_ENTITY_PER_REQUEST) {
      break;
    }
  }
  System.out.print(count + "String_Node_Str" + type+ "String_Node_Str"+ map.size()+ "String_Node_Str");
  String status=BackDoor.restoreDataBundle(bundle);
  try {
    Thread.sleep(WAIT_TIME_BETWEEN_REQUEST);
  }
 catch (  InterruptedException e) {
    e.printStackTrace();
  }
  return status;
}