python3 -m fmpy simulate  --output-file Buildings_latest_Buildings.Fluid.DXSystems.Cooling.WaterSource.Examples.VariableSpeed_res.csv --start-time 0 --stop-time 3600 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 1.44 Buildings_latest_Buildings_Fluid_DXSystems_Cooling_WaterSource_Examples_VariableSpeed.fmu
LOG_NLS           | error   | residualFunc371: Iteration variable `` is inf or nan.
LOG_ASSERT        | debug   | residualFunc371 failed at time=0.
|                 | |       | For more information please use -lv LOG_NLS.
LOG_STDOUT        | warning | While solving non-linear system an assertion failed during initialization.
|                 | |       | | 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