python3 -m fmpy simulate --output-file Buildings_12_Buildings.Utilities.Plotters.Examples.SingleZoneVAV_res.csv --start-time 1.5552e+07 --stop-time 1.5984e+07 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 3600 Buildings_12_Buildings_Utilities_Plotters_Examples_SingleZoneVAV.fmu LOG_STDOUT | info | Using sparse solver for linear system 10, | | | | because density of 0.160 remains under threshold of 0.200. LOG_STDOUT | info | The simulation runtime does not have access to sparse solvers. Defaulting to a dense linear system solver instead. LOG_STDOUT | info | Using sparse solver for linear system 22, | | | | because density of 0.160 remains under threshold of 0.200. LOG_STDOUT | info | The simulation runtime does not have access to sparse solvers. Defaulting to a dense linear system solver instead. LOG_STDOUT | info | The maximum density for using sparse solvers can be specified | | | | using the runtime flag '<-lssMaxDensity=value>'. [ERROR][rank 0][/home/runner/work/FMPy/FMPy/native/sundials-7.5.0/src/cvode/cvode.c:3739][cvHandleFailure] At t = 15582561.0273438 and h = 4.39186286260821e-05, the error test failed repeatedly or with |h| = hmin. Traceback (most recent call last): File "", line 198, in _run_module_as_main File "", line 88, in _run_code File "/home/hudson/saved_omc/libraries/.local/lib/python3.12/site-packages/fmpy/__main__.py", line 4, in main() File "/home/hudson/saved_omc/libraries/.local/lib/python3.12/site-packages/fmpy/cli.py", line 186, in main result = simulate_fmu(args.fmu_filename, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/hudson/saved_omc/libraries/.local/lib/python3.12/site-packages/fmpy/simulation.py", line 788, 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 "/home/hudson/saved_omc/libraries/.local/lib/python3.12/site-packages/fmpy/simulation.py", line 1101, in simulateME state_event, roots_found, time = solver.step(time, next_communication_point) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/hudson/saved_omc/libraries/.local/lib/python3.12/site-packages/fmpy/sundials/__init__.py", line 185, in step raise RuntimeError("CVode error (code %s) in module %s, function %s: %s" % self.error_info) RuntimeError: CVode error (code -3) in module cvHandleFailure, function /home/runner/work/FMPy/FMPy/native/sundials-7.5.0/src/cvode/cvode.c: At t = 15582561.0273438 and h = 4.39186286260821e-05, the error test failed repeatedly or with |h| = hmin.