I did a little modification so that it could run multiple images It always ended with a message killed: 9 after certain iteration Any suggestion? <img width="676" alt="screen shot 2018-11-18 at 6 22 56 pm" src="https://user-images.githubusercontent.com/33992579/48682833-1ade5900-eb5f-11e8-8b42-cd36ebe3982d.png"> <img width="630" alt="screen shot 2018-11-18 at 6 24 09 pm" src="https://user-images.githubusercontent.com/33992579/48682849-2b8ecf00-eb5f-11e8-8755-71d5bdb1d66d.png">