python3 -m fmpy simulate  --output-file Modelica_3.2.3_Modelica.Fluid.Examples.PumpingSystem_res.csv --start-time 0 --stop-time 2000 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.4 Modelica_3_2_3_Modelica_Fluid_Examples_PumpingSystem.fmu
LOG_ASSERT        | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Interfaces.mo:1027:9-1032:39:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((pipe.flowModel.m_flows[1] >= 0.0 and pipe.flowModel.m_flows[1] <= 1e5)) --> "Variable violating min/max constraint: 0.0 <= pipe.flowModel.m_flows[1] <= 1e5, has value: -141.424"