How to solve 'System.OutOfMemoryException'

for (int m = 0; m < CANMsgIdList.Count; m++)
            {


                if (CANMsgIdList[m].Bus == ConsoleApplication13.Buses.CANBusRed)
                {
                    reds.Add(index);
                    
                }
                index++;

            }

            List<double> times = new List<double>();
           
            foreach (var i in reds)
            {

                for (int j = 1; j<index; j++)
               // for (int j = 1; (!(CANMsgIdList[i].MsgId == CANMsgIdList[j].MsgId)) && (j < i); j++)
                {

                    if ((CANMsgIdList[j].Bus).Equals(ConsoleApplication13.Buses.CANBusYellow) &&(CANMsgIdList[j].TimeStamp > CANMsgIdList[i].TimeStamp) )
                    
                    {
                        times.Add(CANMsgIdList[j].TimeStamp- CANMsgIdList[i].TimeStamp);
                        
                    }
                }
            }
            double av = times.Sum() / times.Count;
            //double av = times.Count;
            Console.WriteLine(av);

times.Add(CANMsgIdList[j].TimeStamp- CANMsgIdList[i].TimeStamp);

An unhandled exception of type 'System.OutOfMemoryException' occurred in mscorlib.dll