Environment - simulationEnvironment: startTime=0 stopTime=604800 tolerance=1e-06 numberOfIntervals=2500 stepSize=241.92 Regular simulation: ./Buildings_8_Buildings.Examples.HydronicHeating.TwoRoomsWithStorage -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_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_ASSERT | debug | Buildings_8_Buildings.Examples.HydronicHeating.TwoRoomsWithStorage_functions.c:11738: Invalid root: (nan)^(1.3333) LOG_ASSERT | debug | Buildings_8_Buildings.Examples.HydronicHeating.TwoRoomsWithStorage_functions.c:11738: Invalid root: (nan)^(1.3333) LOG_ASSERT | debug | ##IDA## In function IDAGetNumNonlinSolvIters: The user-provided residual function failed in an unrecoverable manner. LOG_ASSERT | info | simulation terminated by an assertion at initialization