python3 -m fmpy simulate  --output-file Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed_res.csv --start-time 0 --stop-time 2000 --timeout 50 --relative-tolerance 1e-06 Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmu
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(1.00905)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(1.00902)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(1.00881)
LOG_ASSERT        | debug   | Solving non-linear system 318 failed at time=102.000000679599.
|                 | |       | 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 0x7fa8657b2b00>>
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   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(0.90317)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(0.902561)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(0.896251)
LOG_ASSERT        | debug   | Solving non-linear system 318 failed at time=102.000000135921.
|                 | |       | 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 0x7fa8657b2b00>>
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   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(0.873143)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(0.873836)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(0.879529)
LOG_ASSERT        | debug   | Solving non-linear system 318 failed at time=102.000000027185.
|                 | |       | 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 0x7fa8657b2b00>>
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   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(1.034)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(1.03344)
LOG_ASSERT        | debug   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_02nls.c:1315: Invalid root: (inf)^(1.02905)
LOG_ASSERT        | debug   | Solving non-linear system 318 failed at time=1102.00000221423.
|                 | |       | 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 0x7fa8657b2b00>>
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   | /var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/Buildings_8_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed.fmutmp/sources/Buildings_8_Buildings_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_VariableSpeed_functions.c:1605: Invalid root: (-nan)^(2)
LOG_STDOUT        | warning | While solving non-linear system an assertion failed at time 1102.
|                 | |       | | 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