Verification failures in OMSimulator not matched by FMPy

[casella]

After #1271, the number of Buildings 11.0.0 tests that pass verification when exported as FMUs and run by OMSimulator has improved dramatically, from about 680 to 1031, see report and plot
.

This is very good but still not up to the results with FMPy, with 1294 models passing verification.

@lochel can you please try to compare the cases that fail verification with OMSimulator but pass with FMPy, and see how to fix them?

The FMUs are exactly the same, as well as the solver (CVODE). So, any difference can only be due to issues with

• event handling
• proper set-up of simulation parameters (start time, stop time, tolerance, communication interval, solver used)
• handling of dense output

Please let me know if you need some help with that. Thanks!