Environment - simulationEnvironment: startTime=0 stopTime=10000 tolerance=1e-06 numberOfIntervals=2500 stepSize=4 Regular simulation: ./AixLib_latest_AixLib.Fluid.DistrictHeatingCooling.Demands.Examples.OpenLoopVarTSupplyDpFixedTempDifferenceBypass -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_SUCCESS | info | The initialization finished successfully with 3 homotopy steps. LOG_STDOUT | info | ##IDA## -4 error occurred at time = 2491.02363038759 LOG_STDOUT | info | model terminate | Integrator failed. | Simulation terminated at time 2491.02 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.0128524s reading init.xml | | | | | | 0.00121625s reading info.xml | | | | | | 0.000151394s [ 0.1%] pre-initialization | | | | | | 0.000312035s [ 0.1%] initialization | | | | | | 0.0015955s [ 0.7%] steps | | | | | | 0.0708513s [ 30.7%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 0.00163584s [ 0.7%] event-handling | | | | | | 0.00397664s [ 1.7%] overhead | | | | | | 0.152386s [ 66.0%] simulation | | | | | | 0.230909s [100.0%] total | | | | | events | | | | | | 27 state events | | | | | | 0 time events | | | | | solver: ida | | | | | | 8564 steps taken | | | | | | 26226 calls of functionODE | | | | | | 11465 evaluations of jacobian | | | | | | 5540 error test failures | | | | | | 73 convergence test failures | | | | | | 0.133645s time of jacobian evaluation