Regular simulation: ./ModelicaTest_3.2.1_ModelicaTest.MultiBody.FourbarVariants.JointUSR -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS LOG_SUCCESS | info | The initialization finished successfully without homotopy method. assert | warning | The following assertion has been violated at time 0.647200 | | | | jointUSR.revolute.k1a > 1e-10 assert | error | | | | | Singular position of loop (either no or two analytic solutions; | | | | the mechanism has lost one-degree-of freedom in this position). | | | | Try first to use another Modelica.Mechanics.MultiBody.Joints.Assemblies.JointXXX component. | | | | In most cases it is best that the joints outside of the JointXXX | | | | component are revolute and NOT prismatic joints. If this also | | | | lead to singular positions, it could be that this kinematic loop | | | | cannot be solved analytically. In this case you have to build | | | | up the loop with basic joints (NO aggregation JointXXX components) | | | | and rely on dynamic state selection, i.e., during simulation | | | | the states will be dynamically selected in such a way that in no | | | | position a degree of freedom is lost. stdout | warning | Integrator attempt to handle a problem with a called assert. LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.0875092s reading init.xml | | | | | | 0.00663601s reading info.xml | | | | | | 0.00102739s [ 0.7%] pre-initialization | | | | | | 0.000437571s [ 0.3%] initialization | | | | | | 1.9276e-05s [ 0.0%] steps | | | | | | 0.00368617s [ 2.4%] solver (excl. callbacks) | | | | | | 0.0164798s [ 10.6%] creating output-file | | | | | | 2.1684e-19s [ 0.0%] event-handling | | | | | | 0.00496691s [ 3.2%] overhead | | | | | | 0.12807s [ 82.7%] simulation | | | | | | 0.155019s [100.0%] total | | | | | events | | | | | | 0 state events | | | | | | 0 time events | | | | | solver: dassl | | | | | | 428 steps taken | | | | | | 766 calls of functionODE | | | | | | 77 evaluations of jacobian | | | | | | 33 error test failures | | | | | | 1 convergence test failures | | | | | | 0.00138862s time of jacobian evaluation LOG_SUCCESS | info | The simulation finished successfully.