The Frama-C platform, which integrates static analysis and formal proof of C programs, now has a plug-in for run-time execution of annotations. In particular, preconditions and postconditions written using the E-ACSL subset of the ACSL annotation language for C can now be executed thanks to this plug-in. This is a great move in the direction [...]

On December 5-6, I participated in the 2nd workshop on Theorem Proving in

Certification, in Cambridge (UK). This turned out to be even more interesting than last year’s program promised.

The goal of the workshop is to clarify under which conditions theorem proving

can be applied in the context of DO-178C Formal Methods Supplement (hence Prove & Fly!):

extent [...]

If you read a bit of French, you’ll be happy to know that Hermes Publishing has just issued the first of a three-volume series on

Utilisations industrielles des techniques formelles (use of formal methods in industry). This first volume is concerned with abstract interpretation techniques and tools.

As such, we at AdaCore contributed a chapter on [...]

Last year, the conference VSTTE 2010 organized a competition of software verification systems (language + tools),

to improve understanding of each system’s pros and cons. Rod Chapman from Altran Praxis participated with the SPARK language

and toolset, and solved the first problem even beyond what the subject asked. We have since provided solutions in SPARK to all [...]

In case you do not know the series of books “for Dummies”, its principle is

to explore a subject from the ground up, with rich explanations and examples

for non-experts. That’s in my view a valid alternative title for the recently

published “Guidance to Avoiding Vulnerabilities in Programming Languages

through Language Selection and Use”. Rich (around

70 vulnerabilities explored) + [...]

Ever found yourself in an extreme stressed state because of some bugs* escaping you? Then you know how it feels to be Elmer Fudd. Not a typical hero, never victorious in his hunt. So it feels being a software engineer. A new episode in this tragicomedy is a paper by Yang et al. from Uni [...]

I attended yesterday the PhD defense of StÃ©phane Lescuyer, who presented his work on the proof of prover Alt-Ergo, pushing the boundary of what’s feasible with today’s proof technology.

First, a few words of why this is interesting for us at AdaCore, in an industrial setting. Starting with SPARK Pro 9.1, users now have the [...]

This is a title I’d like to reuse some day for a case study in Hi-Lite, but right now it is the title of a very interesting paper published by EE Times: people from Alcatel-Lucent formally verified many properties of an ASIC design in a large communication system.

What is stricking is the similarity of the [...]

We had yesterday our first joint meeting in Hi-Lite since the start of the project, 6 months ago. This was the occasion for CEA to present their ideas for E-ACSL (the executable fragment of the ACSL specification language for C) and for us at AdaCore to present our ideas for ALFA (the subset of Ada [...]

According to this article, which gives an overview of the changes introduced by this new version of the avionics standard.

I like her presentation of Formal Methods:

Formal methods are a class of mathematically based techniques used for the specification, development, and verification of avionics software. Formal methods tools, for example, are used to represent an aircraft’s [...]