Environment - simulationEnvironment: startTime=0 stopTime=5 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.002 Regular simulation: ./Buildings_11_Buildings.Fluid.Interfaces.Examples.FourPortHeatMassExchanger -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS LOG_ASSERT | debug | division by zero at time 0, (a=1) / (b=0), where divisor b expression is: fouPor.rho1_nominal LOG_ASSERT | info | simulation terminated by an assertion at initialization