(cd run_fmpy-fmi3-cs-cvode && python3 -m fmpy simulate --output-file ../OpenHPL_OpenHPL.Examples.WithOpenIPSL.SimpleGenTG_fmpy-fmi3-cs-cvode_res.csv --start-time 0 --stop-time 2000 --timeout 240 --relative-tolerance 1e-06 --interface-type CoSimulation --output-interval 0.8 ../OpenHPL_OpenHPL_Examples_WithOpenIPSL_SimpleGenTG_fmpy-fmi3-cs-cvode.fmu)
LOG_SOLVER        | info    | CVODE linear multistep method CV_BDF
LOG_SOLVER        | info    | CVODE maximum integration order CV_ITER_NEWTON
LOG_SOLVER        | info    | CVODE use equidistant time grid YES
LOG_SOLVER        | info    | CVODE Using relative error tolerance 1.000000e-06
LOG_SOLVER        | info    | CVODE Using sparse linear solver SUNLinSol_KLU.
LOG_SOLVER        | info    | CVODE Use sparse Jacobian method coloredNumerical
LOG_SOLVER        | info    | CVODE uses internal root finding method YES
LOG_SOLVER        | info    | CVODE maximum absolut step size 0
LOG_SOLVER        | info    | CVODE initial step size is set automatically
LOG_SOLVER        | info    | CVODE maximum integration order 5
LOG_SOLVER        | info    | CVODE maximum number of nonlinear convergence failures permitted during one step 10
LOG_SOLVER        | info    | CVODE BDF stability limit detection algorithm ON
LOG_ASSERT        | info    | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHPL 4.0.0/Waterway/SurgeTank.mo:74:3-75:26:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((surgeTank.h_ds >= 0.0), surgeTank.h_ds=-1.113860266648646e-75) --> "Water level h in surge tank must be greater than 0!"
LOG_ASSERT        | info    | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHPL 4.0.0/Waterway/SurgeTank.mo:74:3-75:26:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((surgeTank.h_ds >= 0.0), surgeTank.h_ds=-1.113860266648646e-75) --> "Water level h in surge tank must be greater than 0!"
LOG_ASSERT        | info    | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHPL 4.0.0/Waterway/SurgeTank.mo:74:3-75:26:writable]
|                 | |       | The following assertion has been violated at time 0.000000
|                 | |       | ((surgeTank.h_ds >= 0.0), surgeTank.h_ds=-1.113860266648646e-75) --> "Water level h in surge tank must be greater than 0!"
LOG_ASSERT        | error   | No event found, but assert was triggered. Throwing now!
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/__main__.py", line 4, in <module>
    main()
    ~~~~^^
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/cli.py", line 186, in main
    result = simulate_fmu(args.fmu_filename,
                          validate=args.validate,
    ...<14 lines>...
                          visible=args.visible,
                          fmi_call_logger=fmi_call_logger)
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/simulation.py", line 801, in simulate_fmu
    result = simulateCS(model_description, fmu, start_time, stop_time, relative_tolerance, start_values, apply_default_start_values, input, output, output_interval, timeout, step_finished, set_input_derivatives, use_event_mode, early_return_allowed, validate, initialize, terminate, set_stop_time)
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/simulation.py", line 1350, in simulateCS
    event_encountered, terminate_simulation, early_return, last_successful_time = fmu.doStep(currentCommunicationPoint=time, communicationStepSize=step_size)
                                                                                  ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi3.py", line 1968, in doStep
    self.fmi3DoStep(
    ~~~~~~~~~~~~~~~^
        self.component,
        ^^^^^^^^^^^^^^^
    ...<6 lines>...
        byref(lastSuccessfulTime),
        ^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi3.py", line 1268, in fmi3DoStep
    return self._call(
           ~~~~~~~~~~^
        "fmi3DoStep",
        ^^^^^^^^^^^^^
    ...<7 lines>...
        lastSuccessfulTime,
        ^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi1.py", line 369, in _call
    raise FMICallException(function=fname, status=res)
fmpy.fmi1.FMICallException: fmi3DoStep failed with status 3 (error).