python3 -m fmpy simulate  --output-file ThermoPower_ThermoPower.Test.GasComponents.TestGasMixer_res.csv --start-time 0 --stop-time 20 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.008 ThermoPower_ThermoPower_Test_GasComponents_TestGasMixer.fmu
LOG_ASSERT        | debug   | Model error: Argument of sqrt(Valve1.gas.d) was -133.374 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(Valve1.gas.d) was -133.374 should be >= 0
LOG_ASSERT        | debug   | Model error: Argument of sqrt(Valve1.gas.d) was -133.374 should be >= 0
LOG_ASSERT        | debug   | Solving non-linear system 239 failed at time=15.0000000163281.
|                 | |       | 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 0x7f1bca71c0d0>>
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).