Environment - simulationEnvironment: startTime=1.5984e+07 stopTime=1.67616e+07 tolerance=1e-06 numberOfIntervals=2500 stepSize=311.04 Regular simulation: ./Buildings_9_Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.Guideline36Summer -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS stdout | warning | The default linear solver fails, the fallback solver with total pivoting is started at time 15984000.000000. That might raise performance issues, for more information use -lv LOG_LS. assert | debug | division leads to inf or nan at time 1.5984e+07, (a=-nan) / (b=546.684), where divisor b is: zonAHUG36Con.hvac.heaCoi.vol.dynBal.m assert | error | Failed to solve the initialization problem with global homotopy with equidistant step size. assert | debug | Unable to solve initialization problem. assert | info | simulation terminated by an assertion at initialization