Check of model completed successfully with a lot of errors (from MathCore)

[Jan Brugård]

See the attached model. It gives a strange error message when checking. There should never be a check that completed succesfully with errors, and the equations and variables should not be written twice and they should at least be the same both times.

Note: This is a model that should not work, it is incorrect. But the error messages should be more helpfull.

--- [57] 16:42:39 Validation of class HydraulicTests_new.CylinderDouble1 ---
Check of HydraulicTests_new.CylinderDouble1 completed successfully.
Error:  Equation : 'housing.der(s) = housing.der(s)'  has circular references for variable housing.der(s).
Error:  Equation : 'flangeRef.der(s) = housing.der(s)'  has circular references for variable housing.der(s).
Error:  Equation : 'piston.der(der(s)) = piston.der(der(s))'  has circular references for variable piston.der(der(s)).
Error:  Equation : 'elastoGapB.flange_b.der(der(s)) = piston.der(der(s))'  has circular references for variable piston.der(der(s)).
Error: Too many equations, overdetermined system. The model has 63 equation(s) and 61 variable(s)
Class HydraulicTests_new.CylinderDouble1 has 51 equation(s) and 51 variable(s).
27 of these are trivial equation(s).

[Jan Brugård]

​http://intranet/trac/mathmodelica/ticket/2574

[Martin Sjölund]

Note: This model is accepted by OpenModelica without any error message, and even builds code.

[Peter Aronsson]

This is not an issue for the frontend.