Environment - simulationEnvironment: startTime=0 stopTime=10000 tolerance=1e-06 numberOfIntervals=2500 stepSize=4 Regular simulation: ./AixLib_latest_AixLib.Fluid.DistrictHeatingCooling.Demands.Examples.OpenLoopVarTSupplyDp -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 = 2496.49865177416 LOG_STDOUT | info | model terminate | Integrator failed. | Simulation terminated at time 2496.5 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.0143451s reading init.xml | | | | | | 0.00139188s reading info.xml | | | | | | 0.000157506s [ 0.1%] pre-initialization | | | | | | 0.000330991s [ 0.2%] initialization | | | | | | 0.00113812s [ 0.7%] steps | | | | | | 0.049956s [ 30.5%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 9.9497e-05s [ 0.1%] event-handling | | | | | | 0.00384703s [ 2.3%] overhead | | | | | | 0.108387s [ 66.1%] simulation | | | | | | 0.163916s [100.0%] total | | | | | events | | | | | | 1 state events | | | | | | 0 time events | | | | | solver: ida | | | | | | 5914 steps taken | | | | | | 18469 calls of functionODE | | | | | | 7985 evaluations of jacobian | | | | | | 3952 error test failures | | | | | | 47 convergence test failures | | | | | | 0.0938854s time of jacobian evaluation