python3 -m fmpy simulate  --output-file MEV_MEV.Simulations.LinearControl.Scenario3_res.csv --start-time 0 --stop-time 15 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.005 MEV_MEV_Simulations_LinearControl_Scenario3.fmu
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -4.64645 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -4.60758 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -4.25767 should be >= 0
LOG_ASSERT        | debug   | Solving non-linear system 1814 failed at time=0.860869567026291.
|                 | |       | For more information please use -lv LOG_NLS.
Exception ignored on calling ctypes callback function: <bound method CVodeSolver.f of <fmpy.sundials.CVodeSolver object at 0x7f63f13c6e00>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/fmpy/sundials/__init__.py", line 141, in f
    self.get_dx(NV_DATA_S(ydot), self.nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 505, in getDerivatives
    return self.fmi2GetDerivatives(self.component, dx, nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 215, in w
    raise FMICallException(function=fname, status=res)
fmpy.fmi1.FMICallException: fmi2GetDerivatives failed with status 3 (error).
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.555489 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.351825 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.218425 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.131048 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.073816 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0363291 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0117751 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.305551 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.19865 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.128629 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.082766 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0527256 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0330491 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.020161 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0117193 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00619 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00256829 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000196078 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.204534 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.133501 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.086975 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0565002 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0365392 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0234648 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.014901 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00929175 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00561768 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00321117 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0016349 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000602445 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0592732 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0387985 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0253876 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0166034 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0108498 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00708112 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00461267 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00299583 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0019368 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00124314 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000788792 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000491194 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000296266 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000168589 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -8.49603e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -3.01835e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0174591 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0114338 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00748715 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00490212 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00320892 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00209988 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00137346 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000897649 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000585995 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000381862 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000248155 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000160577 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000103213 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -6.56395e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -4.1029e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -2.49091e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -1.43506e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -7.43478e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -2.90491e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.00232294 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.0015215 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000996564 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000652728 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000427516 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000280001 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000183379 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.000120092 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -7.86388e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -5.1487e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -3.37025e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -2.20537e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -1.44237e-05 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -9.42611e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -6.15266e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -4.00855e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -2.60416e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -1.68428e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -1.08176e-06 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -6.8711e-07 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -4.28614e-07 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -2.593e-07 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -1.48398e-07 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[4].valve_out.air.rho) was -0.555486 should be >= 0
LOG_STDOUT        | warning | While solving non-linear system an assertion failed at time 0.86087.
|                 | |       | | The non-linear solver tries to solve the problem that could take some time.
|                 | |       | | It could help to provide better start-values for the iteration variables.
|                 | |       | | For more information simulate with -lv LOG_NLS_V
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[6].valve_out.air.rho) was -11.7066 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[6].valve_out.air.rho) was -11.6207 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[6].valve_out.air.rho) was -10.8472 should be >= 0
LOG_ASSERT        | debug   | Solving non-linear system 1732 failed at time=0.942857144977622.
|                 | |       | For more information please use -lv LOG_NLS.
Exception ignored on calling ctypes callback function: <bound method CVodeSolver.f of <fmpy.sundials.CVodeSolver object at 0x7f63f13c6e00>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/fmpy/sundials/__init__.py", line 141, in f
    self.get_dx(NV_DATA_S(ydot), self.nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 505, in getDerivatives
    return self.fmi2GetDerivatives(self.component, dx, nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 215, in w
    raise FMICallException(function=fname, status=res)
fmpy.fmi1.FMICallException: fmi2GetDerivatives failed with status 3 (error).
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[6].valve_out.air.rho) was -1.37997 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[6].valve_out.air.rho) was -1.36286 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[6].valve_out.air.rho) was -1.20894 should be >= 0
LOG_ASSERT        | debug   | Solving non-linear system 1732 failed at time=0.942857143281244.
|                 | |       | For more information please use -lv LOG_NLS.
Exception ignored on calling ctypes callback function: <bound method CVodeSolver.f of <fmpy.sundials.CVodeSolver object at 0x7f63f13c6e00>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/fmpy/sundials/__init__.py", line 141, in f
    self.get_dx(NV_DATA_S(ydot), self.nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 505, in getDerivatives
    return self.fmi2GetDerivatives(self.component, dx, nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 215, in w
    raise FMICallException(function=fname, status=res)
fmpy.fmi1.FMICallException: fmi2GetDerivatives failed with status 3 (error).
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[10].valve_in.air.rho) was -28942 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[10].valve_in.air.rho) was -28942 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[10].valve_in.air.rho) was -28942 should be >= 0
LOG_ASSERT        | debug   | Solving non-linear system 1572 failed at time=1.41428571578381.
|                 | |       | For more information please use -lv LOG_NLS.
Exception ignored on calling ctypes callback function: <bound method CVodeSolver.f of <fmpy.sundials.CVodeSolver object at 0x7f63f13c6e00>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/fmpy/sundials/__init__.py", line 141, in f
    self.get_dx(NV_DATA_S(ydot), self.nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 505, in getDerivatives
    return self.fmi2GetDerivatives(self.component, dx, nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 215, in w
    raise FMICallException(function=fname, status=res)
fmpy.fmi1.FMICallException: fmi2GetDerivatives failed with status 3 (error).
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[10].valve_in.air.rho) was -61.5579 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[10].valve_in.air.rho) was -61.5579 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(patients[10].valve_in.air.rho) was -61.5579 should be >= 0
LOG_ASSERT        | debug   | Solving non-linear system 1572 failed at time=1.41428571458535.
|                 | |       | For more information please use -lv LOG_NLS.
Exception ignored on calling ctypes callback function: <bound method CVodeSolver.f of <fmpy.sundials.CVodeSolver object at 0x7f63f13c6e00>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/fmpy/sundials/__init__.py", line 141, in f
    self.get_dx(NV_DATA_S(ydot), self.nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 505, in getDerivatives
    return self.fmi2GetDerivatives(self.component, dx, nx)
  File "/usr/local/lib/python3.10/dist-packages/fmpy/fmi2.py", line 215, in w
    raise FMICallException(function=fname, status=res)
fmpy.fmi1.FMICallException: fmi2GetDerivatives failed with status 3 (error).
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 = 1.51679, mxstep steps taken before reaching tout.