Environment - simulationEnvironment: startTime=0 stopTime=3 tolerance=1e-06 numberOfIntervals=5006 stepSize=0.000599281 Regular simulation: ./ModelicaTest_4.1.0_ModelicaTest.Fluid.TestComponents.Valves.TestValveDiscrete -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_STDOUT | info | Chattering detected around time 0.499800239713..0.499800239787 (100 state events in a row with a total time delta less than the step size 0.000599280862964). This can be a performance bottleneck. Use -lv LOG_EVENTS for more information. The zero-crossing was: V1.m_flow > V1.m_flow_small LOG_ASSERT | debug | Aborting simulation due to chattering being detected and the simulation flags requesting we do not continue further.