Program: 87145
Project: 87145
Buggy source:
@Override public void removeAttachment(String messageId,String attachmentId,UserInfos user,final Handler<Either<String,JsonObject>> result){
  if (validationParamsError(user,result,messageId,attachmentId))   return;
  String get="String_Node_Str" + "String_Node_Str" + "String_Node_Str";
  String query=get + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str";
  String q2=get + "String_Node_Str" + "String_Node_Str";
  String q3=get + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str";
  JsonObject params=new JsonObject().putString("String_Node_Str",user.getUserId()).putString("String_Node_Str",messageId).putString("String_Node_Str",attachmentId).putBoolean("String_Node_Str",true);
  StatementsBuilder b=new StatementsBuilder();
  b.add(query,params);
  b.add(q2,params);
  b.add(q3,params);
  neo.executeTransaction(b.build(),null,true,validResultsHandler(new Handler<Either<String,JsonArray>>(){
    @Override public void handle(    Either<String,JsonArray> event){
      if (event.isLeft()) {
        result.handle(new Either.Left<String,JsonObject>(event.left().getValue()));
        return;
      }
      JsonArray result1=(JsonArray)event.right().getValue().get(0);
      JsonArray result3=(JsonArray)event.right().getValue().get(2);
      JsonObject jsonResult=result1.size() > 0 ? (JsonObject)result1.get(0) : new JsonObject();
      jsonResult.putBoolean("String_Node_Str",result3.size() > 0 ? ((JsonObject)result3.get(0)).getBoolean("String_Node_Str",false) : false);
      result.handle(new Either.Right<String,JsonObject>(jsonResult));
    }
  }
));
}

Fixed version (ground truth):
@Override public void removeAttachment(String messageId,String attachmentId,UserInfos user,final Handler<Either<String,JsonObject>> result){
  if (validationParamsError(user,result,messageId,attachmentId))   return;
  String get="String_Node_Str" + "String_Node_Str" + "String_Node_Str";
  String query=get + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str";
  String q2=get + "String_Node_Str" + "String_Node_Str";
  String q3="String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str";
  JsonObject params=new JsonObject().putString("String_Node_Str",user.getUserId()).putString("String_Node_Str",messageId).putString("String_Node_Str",attachmentId).putBoolean("String_Node_Str",true);
  StatementsBuilder b=new StatementsBuilder();
  b.add(query,params);
  b.add(q2,params);
  b.add(q3,params);
  neo.executeTransaction(b.build(),null,true,validResultsHandler(new Handler<Either<String,JsonArray>>(){
    @Override public void handle(    Either<String,JsonArray> event){
      if (event.isLeft()) {
        result.handle(new Either.Left<String,JsonObject>(event.left().getValue()));
        return;
      }
      JsonArray result1=(JsonArray)event.right().getValue().get(0);
      JsonArray result3=(JsonArray)event.right().getValue().get(2);
      JsonObject jsonResult=result1.size() > 0 ? (JsonObject)result1.get(0) : new JsonObject();
      jsonResult.putBoolean("String_Node_Str",result3.size() > 0 ? ((JsonObject)result3.get(0)).getBoolean("String_Node_Str",false) : false);
      result.handle(new Either.Right<String,JsonObject>(jsonResult));
    }
  }
));
}