Environment - simulationEnvironment: publicData = /home/hudson/saved_omc/libraries/.openmodelica/libraries/TransiEnt master//Tables/ privateData = /home/hudson/saved_omc/libraries/.openmodelica/libraries/TransiEnt master//Tables/ superstructureTables = /home/hudson/saved_omc/libraries/.openmodelica/libraries/TransiEnt master//Tables/superstructure/Tables/ superstructureInput = /home/hudson/saved_omc/libraries/.openmodelica/libraries/TransiEnt master//Tables/superstructure/RegionInformation/ startTime=0 stopTime=86400 tolerance=1e-06 numberOfIntervals=2500 stepSize=34.56 Regular simulation: ./TransiEnt_TransiEnt.Grid.Heat.HeatGridTopology.TopologyD_Ports -abortSlowSimulation -alarm=240 -lv LOG_STATS LOG_STDOUT | warning | The default linear solver fails, the fallback solver with total pivoting is started at time 0.000000. That might raise performance issues, for more information use -lv LOG_LS. LOG_STDOUT | warning | Error solving linear system of equations (no. 16854) at time 0.000000. LOG_STDOUT | warning | Solving linear system 16854 fails at time 0. For more information use -lv LOG_LS. LOG_ASSERT | debug | Solving linear system 16854 failed at time=0. | | | | For more information please use -lv LOG_LS. LOG_ASSERT | info | simulation terminated by an assertion at initialization