Environment - simulationEnvironment: startTime=0 stopTime=1000 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.4 Regular simulation: ./ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestDynamicMultiFluidHeatExchangerShell -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_ASSERT | debug | ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestDynamicMultiFluidHeatExchangerShell_16dae.c:1555: Invalid root: (-2.69595e+07)^(0.507) LOG_ASSERT | debug | ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestDynamicMultiFluidHeatExchangerShell_16dae.c:1555: Invalid root: (-2.69595e+07)^(0.507) LOG_ASSERT | debug | ##IDA## In function IDAGetNumNonlinSolvIters: The user-provided residual function failed in an unrecoverable manner. LOG_ASSERT | info | simulation terminated by an assertion at initialization