Regular simulation: ./Buildings_7.0.0_Buildings.Fluid.Storage.Validation.HeatExchangerLocation -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS LOG_SUCCESS | info | The initialization finished successfully with 4 homotopy steps. stdout | warning | The default linear solver fails, the fallback solver with total pivoting is started at time 871.471588. That might raise performance issues, for more information use -lv LOG_LS. assert | debug | Buildings_7.0.0_Buildings.Fluid.Storage.Validation.HeatExchangerLocation_functions.c:1690: Invalid root: (-nan)^(0.166667) [CVODES ERROR] CVode At t = 871.351, the right-hand side routine failed in an unrecoverable manner. stdout | info | ##CVODE## -8 error occurred at time = 871.351361002495 stdout | info | model terminate | Integrator failed. | Simulation terminated at time 871.351 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.146758s reading init.xml | | | | | | 0.0129613s reading info.xml | | | | | | 0.000249288s [ 0.1%] pre-initialization | | | | | | 0.000685608s [ 0.3%] initialization | | | | | | 0.00504069s [ 1.9%] steps | | | | | | 0.0271265s [ 10.1%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 2.129e-06s [ 0.0%] event-handling | | | | | | 7.1838e-05s [ 0.0%] overhead | | | | | | 0.236293s [ 87.7%] simulation | | | | | | 0.269469s [100.0%] total | | | | | events | | | | | | 0 state events | | | | | | 0 time events | | | | | solver: cvode | | | | | | 774 steps taken | | | | | | 3082 calls of functionODE | | | | | | 19392 evaluations of jacobian | | | | | | 299 error test failures | | | | | | 72 convergence test failures | | | | | | 0s time of jacobian evaluation