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[Frama-c-discuss] Discrepancy between Jessie gui and command line when using yices

Kerstin Hartig wrote:
> Hello,
> I somehow do not understand what this option is exactly doing.
> I tried to find more information in the manual, but unfortunately I
> couldn't.
> In the help-page I found even more VC transformation options like --exp all
> or eval-goals...
> I am wondering now, if it is sufficient if a VC can be proved with the
> option -exp goal, but not without (timeout).
> Especially as it seems to be a default option in batch mode.
> To answer this I'd like to understand better what is meant by "expand
> definitions of predicates in the generated goals".
> Maybe someone can help with this.

If the goal contains f(a), and f is a predicate or function defined by

logic P(x) = e

then replace f(a) in the goal by e where occurrence of x are replaced by a.

It can be expected that automatic provers could do that themselves, but 
unfortunately provers are sometimes so as smart as expected...

- Claude

> Thank you in advance,
> Kerstin
>>> After investigating, I found that this because in batch mode, the 
>>> generation of goals for smt solvers (yices, z3, cvc3)
>>> is done with the why option "-exp goal" which ask to automatically 
>>> expand definitions of predicates in the generated goals.
>>> Thus to obtain the same behavior in the gui, you need to do
>>> frama-c -jessie  -jessie-why-opt " -exp goal" sw.c
>>> ------------------------------------------------------------------------
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>>> Frama-c-discuss at

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