Environment - simulationEnvironment: startTime=0 stopTime=2000 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.8 Regular simulation: ./ThermofluidStream_dev_ThermofluidStream.Undirected.Boundaries.Tests.Tank_upsideDownBottle -abortSlowSimulation -alarm=1200 -s gbode -gbm=radauIIA3 -emit_protected -lv LOG_STATS LOG_STDOUT | warning | Numerical Jacobians without coloring are currently not supported by GBODE. Colored numerical Jacobian will be used. LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_STDOUT | info | Chattering detected around time 1.32690620138e-11..0.414227802348 (100 state events in a row with a total time delta less than the step size 0.8). This can be a performance bottleneck. Use -lv LOG_EVENTS for more information. The zero-crossing was: (-flowResistance.rear.m_flow) >= 0.0 LOG_ASSERT | debug | Aborting simulation due to chattering being detected and the simulation flags requesting we do not continue further.