Example output ============== >> driver run 1 Elapsed time is 5.617846 seconds. run 2 Elapsed time is 4.291330 seconds. run 3 Elapsed time is 4.280777 seconds. run 4 Elapsed time is 4.359374 seconds. run 5 Elapsed time is 6231.370645 seconds. run 6 Elapsed time is 8659.349802 seconds. run 7 Elapsed time is 8350.678238 seconds.