--- layout: fc_discuss_archives title: Message 5 from Frama-C-discuss on August 2008 ---
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[Frama-c-discuss] combining value analysis and deductive verification by jessie



Hi,

Adding assert annotations could be helpfull to refine value analysis.
But if the assertion could not be verified during the value analysis, we
have a message that indicates "Assertion got status unknown".

So, I feel the need to verify that assertion to have a more complete
verification...
Thanks to jessie plugin, and by means of other annotations, I succeed in
proving all these annotations.

This is a good collaboration of the different plugins.

But theses operations have been made in 2 independent steps that are
value analysis and proof with jessie.
I tried to use frama-c with the two plugins activated with a cmd like
that :
frama-c-gui -val -lib-entry  -jessie-analysis -jessie-gui -jessie-int-model exact exemple.c
but I don't find in messages of the value analysis the status of
annotations resulting from jessie analysis.
Is it possible ?
If not, do you think it's conceivable ?

small exemple in attached file

regards,

St?phane Duprat


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