id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
3114	Empty equation systems during initialization	Lennart Ochel	Lennart Ochel	"I figured out one more case that let the initialization fail. Please check the following model:
{{{
msl31/Modelica.Mechanics.MultiBody.Examples.Loops.PlanarLoops_analytic.mos
}}}

This example produces this error messages:
{{{
Notification: The given system is mixed-determined.   [index > 0]
Notification: The given system is mixed-determined.   [index > 1]
Notification: The given system is mixed-determined.   [index > 2]
Notification: The given system is mixed-determined.   [index > 3]
Warning: No system for the symbolic initialization was generated. A method using numerical algorithms will be used instead
}}}

The example fails, since there are equation systems without variables:
{{{
unknown partition
========================================

Variables (0)
========================================


Equations (1, 3)
========================================
1/1 (3): {0.0, 0.0, 1.0} = {0.0, 0.0, 1.0}   [dynamic]


State Sets
========================================


Incidence Matrix (row: equation)
========================================
number of rows: 3
1:
2:
3:


Transpose Incidence Matrix (row: var)
========================================
number of rows: 0


no matching
}}}"	defect	closed	high	1.9.4	Backend	trunk	fixed