python3 -m fmpy simulate --output-file Modelica_3.2.3_Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_Transformer_res.csv --start-time 0 --stop-time 2.5 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0001 Modelica_3_2_3_Modelica_Magnetic_QuasiStatic_FundamentalWave_Examples_BasicMachines_InductionMachines_IMC_Transformer.fmu LOG_STDOUT | info | Using sparse solver for linear system 0, | | | | because density of 0.013 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 13, | | | | because density of 0.013 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>'. 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 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 -3) in module CVODE, function CVode: At t = 1.99939 and h = 7.30768e-09, the error test failed repeatedly or with |h| = hmin.