Program: 62927
Project: 62927
Buggy source:
private static void appendInstitutionForAccounts(){
  String query="String_Node_Str" + Account.class.getName() + "String_Node_Str";
  @SuppressWarnings("String_Node_Str") List<Account> instructorAccounts=(List<Account>)pm.newQuery(query).execute();
  HashMap<String,String> instructorInstitutions=new HashMap<String,String>();
  for (  Account a : instructorAccounts) {
    if (a.getInstitute() == null || a.getInstitute().isEmpty()) {
      a.setInstitute("String_Node_Str");
    }
    instructorInstitutions.put(a.getGoogleId(),a.getInstitute());
  }
  System.out.println("String_Node_Str" + instructorInstitutions.size());
  query="String_Node_Str" + Instructor.class.getName();
  @SuppressWarnings("String_Node_Str") List<Instructor> instructors=(List<Instructor>)pm.newQuery(query).execute();
  HashMap<String,String> courseInstitutions=new HashMap<String,String>();
  for (  Instructor i : instructors) {
    courseInstitutions.put(i.getCourseId(),instructorInstitutions.get(i.getGoogleId()));
  }
  System.out.println("String_Node_Str" + courseInstitutions.size());
  query="String_Node_Str" + Student.class.getName() + "String_Node_Str";
  @SuppressWarnings("String_Node_Str") List<Student> students=(List<Student>)pm.newQuery(query).execute();
  HashMap<String,String> studentInstitutions=new HashMap<String,String>();
  for (  Student s : students) {
    studentInstitutions.put(s.getID(),courseInstitutions.get(s.getCourseID()));
  }
  System.out.println("String_Node_Str" + studentInstitutions.size());
  int count=0;
  for (  String id : studentInstitutions.keySet()) {
    query="String_Node_Str" + Account.class.getName() + "String_Node_Str"+ id+ "String_Node_Str";
    @SuppressWarnings("String_Node_Str") List<Account> studentAccounts=(List<Account>)pm.newQuery(query).execute();
    if (studentAccounts.size() > 0) {
      Account a=studentAccounts.get(0);
      if (a.getInstitute() == null || a.getInstitute().equals("String_Node_Str")) {
        System.out.println("String_Node_Str" + studentInstitutions.get(a.getGoogleId()) + "String_Node_Str"+ a.getGoogleId());
        if (!isTrial) {
          Account newA=new Account(a.getGoogleId(),a.getName(),false,a.getEmail(),studentInstitutions.get(a.getGoogleId()));
          pm.deletePersistent(a);
          pm.makePersistent(newA);
        }
        count++;
      }
    }
  }
  System.out.println("String_Node_Str" + count + "String_Node_Str");
}

Fixed version (ground truth):
private static void appendInstitutionForAccounts(){
  String query="String_Node_Str" + Account.class.getName() + "String_Node_Str";
  @SuppressWarnings("String_Node_Str") List<Account> instructorAccounts=(List<Account>)pm.newQuery(query).execute();
  HashMap<String,String> instructorInstitutions=new HashMap<String,String>();
  for (  Account a : instructorAccounts) {
    if (a.getInstitute() == null || a.getInstitute().isEmpty()) {
      a.setInstitute("String_Node_Str");
    }
    instructorInstitutions.put(a.getGoogleId(),a.getInstitute());
  }
  System.out.println("String_Node_Str" + instructorInstitutions.size());
  query="String_Node_Str" + Instructor.class.getName();
  @SuppressWarnings("String_Node_Str") List<Instructor> instructors=(List<Instructor>)pm.newQuery(query).execute();
  HashMap<String,String> courseInstitutions=new HashMap<String,String>();
  for (  Instructor i : instructors) {
    courseInstitutions.put(i.getCourseId(),instructorInstitutions.get(i.getGoogleId()));
  }
  System.out.println("String_Node_Str" + courseInstitutions.size());
  query="String_Node_Str" + Student.class.getName() + "String_Node_Str";
  @SuppressWarnings("String_Node_Str") List<Student> students=(List<Student>)pm.newQuery(query).execute();
  HashMap<String,String> studentInstitutions=new HashMap<String,String>();
  for (  Student s : students) {
    studentInstitutions.put(s.getID(),courseInstitutions.get(s.getCourseID()));
  }
  System.out.println("String_Node_Str" + studentInstitutions.size());
  int count=0;
  for (  String id : studentInstitutions.keySet()) {
    query="String_Node_Str" + Account.class.getName() + "String_Node_Str"+ id+ "String_Node_Str";
    @SuppressWarnings("String_Node_Str") List<Account> studentAccounts=(List<Account>)pm.newQuery(query).execute();
    if (studentAccounts.size() > 0) {
      Account a=studentAccounts.get(0);
      if (a.getInstitute() == null || a.getInstitute().equals("String_Node_Str")) {
        System.out.println("String_Node_Str" + studentInstitutions.get(a.getGoogleId()) + "String_Node_Str"+ a.getGoogleId()+ "String_Node_Str");
        if (!isTrial) {
          a.setInstitute(studentInstitutions.get(a.getGoogleId()));
        }
        count++;
      }
    }
  }
  System.out.println("String_Node_Str" + count + "String_Node_Str");
  pm.flush();
  pm.close();
}