Program: 38191
Project: 38191
Buggy source:
@Override public Response execute(){
  ArrayList<AnnotationInformation> annotations=new ArrayList<AnnotationInformation>();
  DatabaseAccessor db=null;
  Map<String,Integer> a=null;
  try {
    db=initDB();
    a=db.getAnnotations();
  }
 catch (  SQLException e) {
    e.printStackTrace();
    return new ErrorResponse(StatusCode.BAD_REQUEST,"String_Node_Str");
  }
catch (  IOException e) {
    e.printStackTrace();
    return new ErrorResponse(StatusCode.SERVICE_UNAVAILABLE,"String_Node_Str");
  }
  Iterator<String> keys=a.keySet().iterator();
  ArrayList<String> annotation_names=new ArrayList<String>();
  while (keys.hasNext()) {
    annotation_names.add(keys.next());
  }
  for (int i=0; i < annotation_names.size(); i++) {
    database.Annotation annotationObject=null;
    ArrayList<String> values=new ArrayList<String>();
    try {
      annotationObject=db.getAnnotationObject(annotation_names.get(i));
    }
 catch (    SQLException e) {
      e.printStackTrace();
    }
    if (annotationObject.dataType == database.Annotation.FREETEXT) {
      values.add("String_Node_Str");
    }
 else     if (annotationObject.dataType == database.Annotation.DROPDOWN) {
      values=(ArrayList<String>)annotationObject.getPossibleValues();
    }
    AnnotationInformation annotation=new AnnotationInformation(annotationObject.label,values,annotationObject.isRequired);
    annotations.add(annotation);
  }
  try {
    db.close();
  }
 catch (  SQLException e) {
    e.printStackTrace();
    return new ErrorResponse(StatusCode.SERVICE_UNAVAILABLE,"String_Node_Str");
  }
  return new GetAnnotationInformationResponse(200,annotations);
}

Fixed version (ground truth):
@Override public Response execute(){
  ArrayList<AnnotationInformation> annotations=new ArrayList<AnnotationInformation>();
  DatabaseAccessor db=null;
  Map<String,Integer> a=null;
  try {
    db=initDB();
  }
 catch (  SQLException|IOException e) {
    return new ErrorResponse(StatusCode.BAD_REQUEST,"String_Node_Str" + e.getMessage());
  }
  try {
    a=db.getAnnotations();
  }
 catch (  SQLException e) {
    return new ErrorResponse(StatusCode.BAD_REQUEST,"String_Node_Str" + e.getMessage());
  }
  Iterator<String> keys=a.keySet().iterator();
  ArrayList<String> annotation_names=new ArrayList<String>();
  while (keys.hasNext()) {
    annotation_names.add(keys.next());
  }
  for (int i=0; i < annotation_names.size(); i++) {
    database.Annotation annotationObject=null;
    ArrayList<String> values=new ArrayList<String>();
    try {
      annotationObject=db.getAnnotationObject(annotation_names.get(i));
    }
 catch (    SQLException e) {
      e.printStackTrace();
    }
    if (annotationObject.dataType == database.Annotation.FREETEXT) {
      values.add("String_Node_Str");
    }
 else     if (annotationObject.dataType == database.Annotation.DROPDOWN) {
      values=(ArrayList<String>)annotationObject.getPossibleValues();
    }
    AnnotationInformation annotation=new AnnotationInformation(annotationObject.label,values,annotationObject.isRequired);
    annotations.add(annotation);
  }
  db.close();
  return new GetAnnotationInformationResponse(StatusCode.OK,annotations);
}