Environment - simulationEnvironment: startTime=0 stopTime=180 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.072 Regular simulation (ida: SUNDIALS IDA): (cd run_ida && ../BuildingSystems_BuildingSystems.Buildings.Airvolumes.Examples.AirElementsThermal3x3x1 -abortSlowSimulation -alarm=240 -lv LOG_STATS -inputPath=.. -s ida) LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_STDOUT | info | Chattering detected around time 1.59872115546e-18..0.0624394925255 (100 state events in a row with a total time delta less than the step size 0.072). This can be a performance bottleneck. Use -lv LOG_EVENTS for more information. The zero-crossing was: sign(flowConnectionX_221_321.Fp) == sign(flowConnectionX_221_321.Fm_tmp) LOG_ASSERT | debug | Aborting simulation due to chattering being detected and the simulation flags requesting we do not continue further.