id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1987	Unbalanced model	Christian Schubert	Adrian Pop	"I've found another source of unbalanced models.
Consider the following combination:
{{{
  partial block Interface
    input Real x;
    output Real y;
  end Interface;

  block Impl
    extends Interface;
  equation
    y = 2*x;
  end Impl;

  model A
    outer block R = Interface;
    R r(x = 1);
    Real y = r.y;
  end A;

  model B
    inner block R = Impl;
    A a;
    Real xa(start = 1);
  equation
    der(xa) = a.y;
  end B;
}}}

When simulating B, omc says the model only got 3 equations but 4 variables.
As far as I can tell, the model should be fine."	defect	closed	critical	1.9.0	Frontend	trunk	fixed	unbalanced inner outer	Per Östlund