Environment - simulationEnvironment: startTime=1.5552e+07 stopTime=1.57248e+07 tolerance=1e-06 numberOfIntervals=2500 stepSize=69.12 Regular simulation: ./Buildings_9_Buildings.Experimental.DHC.Plants.Cooling.Subsystems.Examples.CoolingTowersParallel -abortSlowSimulation -alarm=480 -emit_protected -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_SUCCESS | info | The initialization finished successfully with 3 homotopy steps. LOG_ASSERT | debug | Buildings_9_Buildings.Experimental.DHC.Plants.Cooling.Subsystems.Examples.CoolingTowersParallel_functions.c:5909: Invalid root: (-nan)^(-1.5) LOG_ASSERT | debug | Buildings_9_Buildings.Experimental.DHC.Plants.Cooling.Subsystems.Examples.CoolingTowersParallel_functions.c:5909: Invalid root: (-nan)^(-1.5) LOG_ASSERT | debug | ##IDA## In function IDAGetNumNonlinSolvIters: The user-provided residual function failed in an unrecoverable manner.