Based on the fact that you retracted this, you probably already realized the problem, but I'll say it anyway for anyone else who hasn't noticed.

If two programs both use this strategy, they'll go into an infinite loop where program A simulates program B simulating program A etc. Since it only checks to see how much time is left after it finishes the simulation, it won't even manage to give up and defect. It will just run out of time.

Also, passed.time would imply that there's a class called "passed" with a variable called "time", which is silly. It should be passed_time or passedTime depending on how you do multi-word variables.