Environment - simulationEnvironment: startTime=0 stopTime=3 tolerance=1e-06 numberOfIntervals=3000 stepSize=0.001 Regular simulation: ./Modelica_3.2.3_Modelica.Mechanics.Rotational.Examples.Friction -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS LOG_STDOUT | warning | Internal Numerical Jacobians without coloring are currently not supported by IDA with KLU. Colored numerical Jacobian will be used. LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_STDOUT | info | Chattering detected around time 0.00677970308667..0.00677970309928 (100 state events in a row with a total time delta less than the step size 0.0005). This can be a performance bottleneck. Use -lv LOG_EVENTS for more information. The zero-crossing was: (pre(clutch.mode) == 1 or pre(clutch.mode) == 2 or clutch.startForward) and clutch.w_rel > 0.0 LOG_ASSERT | debug | Aborting simulation due to chattering being detected and the simulation flags requesting we do not continue further.