python3 -m fmpy simulate  --output-file Buildings_10_Buildings.Experimental.DHC.Plants.Combined.Subsystems.Validation.ChillerHeatRecoveryGroup_res.csv --start-time 0 --stop-time 2000 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.8 Buildings_10_Buildings_Experimental_DHC_Plants_Combined_Subsystems_Validation_ChillerHeatRecoveryGroup.fmu
LOG_NLS           | error   | residualFunc3349: Iteration variable `(null)` is inf or nan.
LOG_ASSERT        | debug   | residualFunc3349 failed at time=2000.
|                 | |       | For more information please use -lv LOG_NLS.
LOG_STDOUT        | warning | While solving non-linear system an assertion failed at time 2000.
|                 | |       | | The non-linear solver tries to solve the problem that could take some time.
|                 | |       | | It could help to provide better start-values for the iteration variables.
|                 | |       | | For more information simulate with -lv LOG_NLS_V
LOG_NLS           | error   | residualFunc3380: Iteration variable `(null)` is inf or nan.
LOG_ASSERT        | debug   | residualFunc3380 failed at time=2000.
|                 | |       | For more information please use -lv LOG_NLS.
LOG_STDOUT        | warning | While solving non-linear system an assertion failed at time 2000.
|                 | |       | | The non-linear solver tries to solve the problem that could take some time.
|                 | |       | | It could help to provide better start-values for the iteration variables.
|                 | |       | | For more information simulate with -lv LOG_NLS_V