Environment - simulationEnvironment: startTime=0 stopTime=10000 tolerance=1e-06 numberOfIntervals=2500 stepSize=4 Regular simulation: ./AixLib_AixLib.Fluid.DistrictHeatingCooling.Demands.Examples.OpenLoopVarTSupplyDpBypass -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 = 19.2000356694685 LOG_STDOUT | info | model terminate | Integrator failed. | Simulation terminated at time 19.2 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.0113021s reading init.xml | | | | | | 0.00105899s reading info.xml | | | | | | 0.00014387s [ 5.4%] pre-initialization | | | | | | 0.000291797s [ 11.0%] initialization | | | | | | 0.000373661s [ 14.1%] steps | | | | | | 0.00103196s [ 39.0%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 5.7921e-05s [ 2.2%] event-handling | | | | | | 3.9275e-05s [ 1.5%] overhead | | | | | | 0.000709766s [ 26.8%] simulation | | | | | | 0.00264825s [100.0%] total | | | | | events | | | | | | 1 state events | | | | | | 0 time events | | | | | solver: ida | | | | | | 248 steps taken | | | | | | 310 calls of functionODE | | | | | | 73 evaluations of jacobian | | | | | | 4 error test failures | | | | | | 19 convergence test failures | | | | | | 0.000986097s time of jacobian evaluation