python3 -m fmpy simulate  --output-file ClaRa_ClaRa.Components.VolumesValvesFittings.Pipes.Check.MassDefect.Test_Pipe_L2_Simple_res.csv --start-time 0 --stop-time 10000 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 4 ClaRa_ClaRa_Components_VolumesValvesFittings_Pipes_Check_MassDefect_Test_Pipe_L2_Simple.fmu
LOG_ASSERT        | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ClaRa 1.8.1/Basics/Records/FluidVLE_L34.mo:6:3-6:70:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((tubeBundle_L2_Simple.summary.fluid.mass[1] >= 0.0)) --> "Variable violating min constraint: 0.0 <= tubeBundle_L2_Simple.summary.fluid.mass[1], has value: -0.00785398"
LOG_ASSERT        | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ClaRa 1.8.1/Basics/ControlVolumes/FluidVolumes/VolumeVLE_L4.mo:191:3-195:56:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((tubeBundle_L2_Simple.mass_FM[2] >= 0.0)) --> "Variable violating min constraint: 0.0 <= tubeBundle_L2_Simple.mass_FM[2], has value: -0.00392699"
LOG_ASSERT        | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ClaRa 1.8.1/Basics/ControlVolumes/Fundamentals/SpacialDistribution/Homogeneous_L4.mo:7:3-7:64:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((tubeBundle_L2_Simple.mechanicalEquilibrium.rho_mix[1] >= 0.0)) --> "Variable violating min constraint: 0.0 <= tubeBundle_L2_Simple.mechanicalEquilibrium.rho_mix[1], has value: -1"
Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/__main__.py", line 4, in <module>
    main()
  File "/usr/local/lib/python3.10/dist-packages/fmpy/command_line.py", line 167, in main
    result = simulate_fmu(args.fmu_filename,
  File "/usr/local/lib/python3.10/dist-packages/fmpy/simulation.py", line 759, in simulate_fmu
    result = simulateME(model_description, fmu, start_time, stop_time, solver, step_size, relative_tolerance, start_values, apply_default_start_values, input, output, output_interval, record_events, timeout, step_finished, validate, set_stop_time)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/simulation.py", line 1059, in simulateME
    state_event, roots_found, time = solver.step(time, t_next)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/sundials/__init__.py", line 178, in step
    raise RuntimeError("CVode error (code %s) in module %s, function %s: %s" % self.error_info)
RuntimeError: CVode error (code -1) in module CVODE, function CVode: At t = 0.22282, mxstep steps taken before reaching tout.