The problem Rochester/SetIntegrals0Theory/S05.01.AreaDistance.PTP03.pg from OPL is rejecting some correct answers:
Not every student is running into an issue with this problem. The random seed for this particular version is 1716. I'm at a loss as to why this is happening. I've checked the code and cannot find anything amiss, but I'm not a pg expert.
The problem is that the tolerance is set to low for the answer. The problem sets the tolerance to 0 with absolute tolerance type (tol => 0, tolType => 'absolute'). If you change the tolerance to tol => 1E-12 it should work. Setting the tolerance to absolute 0 should never be done. Machine precision does not work at absolute 0 for many numbers.
I have not seen this happen with an integer before, so there may be some other issue at play in this as well.
Thanks much! That has addressed the issue. Thanks for the quick turnaround on this.