Regular simulation: ./ModelicaTest_3.2.2_ModelicaTest.MultiBody.Joints.RevolutePlanarLoopConstraint -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS stdout | warning | The default linear solver fails, the fallback solver with total pivoting is started at time 0.000000. That might raise performance issues, for more information use -lv LOG_LS. stdout | warning | Error solving linear system of equations (no. 1183) at time 0.000000. stdout | warning | Solving linear system 1183 fails at time 0. For more information use -lv LOG_LS. assert | debug | Solving linear system 1183 failed at time=0. | | | | For more information please use -lv LOG_LS. assert | info | simulation terminated by an assertion at initialization