--- layout: fc_discuss_archives title: Message 3 from Frama-C-discuss on February 2011 ---
On Tue, 2011-02-01 at 09:38 +0100, David MENTRE wrote: > loops (and "all programs are loops", quoting a participant). I talked > about the skein analysis in Value analysis tutorial which is able to > provide some interesting result and the use of -slevel. But I lack > first hand practice on applying value analysis to large code. Is it a > real issue on control code, for example? Control code contains very few loops. Often, there's an outer while(true) loops to repeatedly execute control statements (similar to while programs in Kleene normal form). > Regarding Jessie: "annotations have the same size as code!" and "what > about error in annotations?". For the former remark, I could only tell Yes, some less bright programmers write annotations that are trivially true and hence verify. Unfortunately, the programmers who write the most buggy code also have the least knowledge in formal logic, which is required to write reasonable annotations. > One of the attendee followed a lesson on code proof using a functional > approach and PVS powerful tactics made by a researcher at INRIA Rennes > (Thomas Genet) and told the approach was more powerful and simple. I > answered that the discussion between the two approaches is still > on-going. :-) Do you know more about this approach? -- Regards, Boris