(cd run_fmpy-fmi3-cs-cvode && python3 -m fmpy simulate --output-file ../IDEAS_dev_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.DD_fmpy-fmi3-cs-cvode_res.csv --start-time 0 --stop-time 1 --timeout 240 --relative-tolerance 1e-06 --interface-type CoSimulation --output-interval 0.0004 ../IDEAS_dev_IDEAS_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_BalancedStepUp_DD_fmpy-fmi3-cs-cvode.fmu)
LOG_STDOUT        | warning | Error solving linear system of equations (no. 558) at time 0.000000.
LOG_STDOUT        | warning | Solving linear system 558 fails at time 0. For more information use -lv LOG_LS.
LOG_ASSERT        | debug   | Solving linear system 558 failed at time=0.
|                 | |       | For more information please use -lv LOG_LS.
LOG_ASSERT        | error   | Failed to solve the initialization problem with global homotopy with equidistant step size.
LOG_ASSERT        | debug   | Unable to solve initialization problem.
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).