Environment - simulationEnvironment: startTime=0 stopTime=1000 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.4 Regular simulation: ./Buildings_10_Buildings.Fluid.Examples.FlowSystem.Simplified3 -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS 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. stdout | warning | Error solving linear system of equations (no. 10712) at time 0.000000. stdout | warning | Solving linear system 10712 fails at time 0. For more information use -lv LOG_LS. assert | debug | Solving linear system 10712 failed at time=0. | | | | For more information please use -lv LOG_LS. assert | info | simulation terminated by an assertion at initialization