Environment - simulationEnvironment: startTime=0 stopTime=2000 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.8 Regular simulation (ida: SUNDIALS IDA): (cd run_ida && ../ThermofluidStream_dev_ThermofluidStream.Undirected.Boundaries.Tests.Tank_upsideDownBottle -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS -inputPath=.. -r=../ThermofluidStream_dev_ThermofluidStream.Undirected.Boundaries.Tests.Tank_upsideDownBottle_ida_res.mat -s ida) LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_STDOUT | info | Chattering detected around time 1.29801852023e-11..0.411695926921 (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: flowResistance3.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.