Environment - simulationEnvironment:
startTime=0
stopTime=2
tolerance=1e-06
numberOfIntervals=2500
stepSize=0.0008
Regular simulation: ./ModelicaTest_4.0.0_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 0.823600
|                 | |       | 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
|                 | |       | | |    0.0417091s          reading init.xml
|                 | |       | | |   0.00445804s          reading info.xml
|                 | |       | | |   0.00121124s [  1.3%] pre-initialization
|                 | |       | | |  0.000541656s [  0.6%] initialization
|                 | |       | | |    6.973e-06s [  0.0%] steps
|                 | |       | | |   0.00243778s [  2.6%] solver (excl. callbacks)
|                 | |       | | |   0.00998047s [ 10.6%] creating output-file
|                 | |       | | |  0.000101124s [  0.1%] event-handling
|                 | |       | | |   0.00290597s [  3.1%] overhead
|                 | |       | | |    0.0773812s [ 81.8%] simulation
|                 | |       | | |    0.0945664s [100.0%] total
|                 | |       | | events
|                 | |       | | |     0 state events
|                 | |       | | |     0 time events
|                 | |       | | solver: dassl
|                 | |       | | |   398 steps taken
|                 | |       | | |   716 calls of functionODE
|                 | |       | | |    71 evaluations of jacobian
|                 | |       | | |    34 error test failures
|                 | |       | | |     1 convergence test failures
|                 | |       | | | 0.00130561s time of jacobian evaluation
LOG_SUCCESS       | info    | The simulation finished successfully.