id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2463	Error when removing simple equations for a simple model	Leonardo Laguna	probably noone	"Some time ago I reported a an error (ticket #2095) that seems to be fixed but Is still get the error in the latest build. To reproduce, use the following model:

{{{

  model ExtractionSetSTest
    Real x1(uncertain=Uncertainty.refine);
    Real x2(uncertain=Uncertainty.refine);
    Real x3(uncertain=Uncertainty.refine);
    Real y1;
    Real y2;
    Real y3;
  equation
    x1+x2 = 0;
    x1-x2 = 0;
    y1 = x2+2*x3;
    x3-y1+y2=x2;
    y2+y3=0;
    y2-2*y3=3;
  end ExtractionSetSTest;

}}} 

ans try to build it. You should get the error message:

{{{

- BackendVariable.vararrayNth 1 has NONE!!!
Error processing file: ExtractionSetSTest.mo
Error: Internal error pre-optimization module removeSimpleEquations failed.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!

}}}

However the model is correct."	defect	new	high	Future	Backend	trunk