Environment - simulationEnvironment: startTime=0 stopTime=3600 tolerance=1e-06 numberOfIntervals=2500 stepSize=1.44 Regular simulation: ./BuildingSystems_BuildingSystems.Buildings.Zones.Examples.SingleZoneVentilated -abortSlowSimulation -alarm=480 -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_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Airflow/Multizone/MediumColumn.mo:10:3-10:68:writable] | | | | The following assertion has been violated at time 0.000000 | | | | ((zone.airpath[1].h >= 0.0)) --> "Variable violating min constraint: 0.0 <= zone.airpath[1].h, has value: -1.4" LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Airflow/Multizone/MediumColumn.mo:10:3-10:68:writable] | | | | The following assertion has been violated at time 0.000000 | | | | ((zone.airpath[2].h >= 0.0)) --> "Variable violating min constraint: 0.0 <= zone.airpath[2].h, has value: -1.4" LOG_ASSERT | debug | ##IDA## In function IDAGetNumNonlinSolvIters: The linear solver's setup function failed in an unrecoverable manner. LOG_ASSERT | info | simulation terminated by an assertion at initialization