python3 -m fmpy simulate  --output-file OpenIPSL_2.0.0_OpenIPSL.Tests.Machines.PSAT.Order4test2_perturbation_res.csv --start-time 0 --stop-time 20 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.008 OpenIPSL_2_0_0_OpenIPSL_Tests_Machines_PSAT_Order4test2_perturbation.fmu