(cd run_fmpy-fmi3-cs-cvode && python3 -m fmpy simulate --output-file ../PowerSystems_PowerSystems.Examples.AC3ph.Transmission.DoubleLine_fmpy-fmi3-cs-cvode_res.csv --start-time 0 --stop-time 0.5 --timeout 240 --relative-tolerance 1e-06 --interface-type CoSimulation --output-interval 2.5e-05 ../PowerSystems_PowerSystems_Examples_AC3ph_Transmission_DoubleLine_fmpy-fmi3-cs-cvode.fmu)
LOG_STDOUT        | warning | Sparsity pattern for non-linear system 0 is not regular. This indicates that something went wrong during sparsity pattern generation. Removing sparsity pattern and disabling NLS scaling.
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        | debug   | Solving non-linear system 434 failed at time=0.
|                 | |       | For more information please use -lv LOG_NLS.
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 1254, in simulateCS
    fmu.exitInitializationMode()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi3.py", line 1339, in exitInitializationMode
    self.fmi3ExitInitializationMode(self.component)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi3.py", line 258, in fmi3ExitInitializationMode
    return self._call("fmi3ExitInitializationMode", instance)
           ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  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: fmi3ExitInitializationMode failed with status 3 (error).