Environment - simulationEnvironment: startTime=0 stopTime=6000 tolerance=1e-06 numberOfIntervals=2500 stepSize=2.4 Regular simulation: ./ModelicaTest_4.0.0_ModelicaTest.Fluid.TestExamplesVariants.HeatingSystem_FixedInitial -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS assert | error | regFun3(): Derivatives at data points do not allow co-monotone interpolation, as both are non-zero, of opposite sign and have an absolute value larger than machine eps (y0d = 0.000271073, y1d = -2.14465e+09). Please correct arguments. stdout | warning | Non-Linear Solver try to handle a problem with a called assert. stdout | warning | While solving non-linear system an assertion failed during initialization. | | | | | The non-linear solver tries to solve the problem that could take some time. | | | | | It could help to provide better start-values for the iteration variables. | | | | | For more information simulate with -lv LOG_NLS_V assert | debug | Solving non-linear system 238 failed at time=0. | | | | For more information please use -lv LOG_NLS. assert | error | Failed to solve the initialization problem with global homotopy with equidistant step size. assert | debug | Unable to solve initialization problem. assert | info | simulation terminated by an assertion at initialization