Environment - simulationEnvironment: startTime=0 stopTime=14400 tolerance=1e-06 numberOfIntervals=2500 stepSize=5.76 Regular simulation: ./AixLib_latest_AixLib.Fluid.Storage.Validation.HeatExchangerDynamics -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 without homotopy method. LOG_STDOUT | info | ##IDA## -4 error occurred at time = 6299.86702769257 LOG_STDOUT | info | model terminate | Integrator failed. | Simulation terminated at time 6299.87 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.061053s reading init.xml | | | | | | 0.00574628s reading info.xml | | | | | | 0.000296467s [ 0.2%] pre-initialization | | | | | | 0.00107299s [ 0.8%] initialization | | | | | | 0.019211s [ 14.3%] steps | | | | | | 0.0579773s [ 43.1%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 0.00251547s [ 1.9%] event-handling | | | | | | 0.0066803s [ 5.0%] overhead | | | | | | 0.0467961s [ 34.8%] simulation | | | | | | 0.13455s [100.0%] total | | | | | events | | | | | | 4 state events | | | | | | 0 time events | | | | | solver: ida | | | | | | 1980 steps taken | | | | | | 3713 calls of functionODE | | | | | | 369 evaluations of jacobian | | | | | | 175 error test failures | | | | | | 17 convergence test failures | | | | | | 0.0345448s time of jacobian evaluation