Wrong simulation result with symbolic initialization

[Christian Schubert]

Hi,

when running the model

Modelica.Blocks.Examples.IntegerNetwork1

we get "Files Equal!" if we run it without symbolic initialization and "Files not Equal!" otherwise.

The variable in question is

showValue2.showNumber

which is connected to the output of a 'TriggeredAdd' Block. So it seems that maybe an event (when) at the beginning has been missed?!

[Jens Frenkel]

We compared both outputs with dymola and our expectations. The symoblic initialization is correct and the old initialization prodouced a wrong result for showValue2.showNumber.
It seems that

  when {trigger, local_reset} then
     y = if local_reset then local_set else pre(y) + u;
  end when;

fires shortly after initialization although triggerd does not change as far I can tell.

[Lennart Ochel]

I guess this is a design issue of the old initialization and the event-system. It is not designed or even possible to provide correct pre-values at all (in particular for when-conditions).

[Lennart Ochel]

Use the symbolic initialization.