Frama-C RSS News and Blogs

Release of Frama-C 32.1 (Germanium)

Mon, 16 Mar 2026 00:00:00 +0000

Frama-C 32.1 (Germanium) is out. Download it here.

Frama-Clang v0.0.19 for Frama-C 32.0 Germanium

Wed, 04 Mar 2026 00:00:00 +0000

Frama-Clang v0.0.19 is out.

Pointer alignment verification

Mon, 02 Mar 2026 12:00:00 +0000

This blog post sums up what is the alignment constraint, its meaning for (common) hardware, how it has been derived at the C level and how Frama-C has been modified in version 32.0 (Germanium) to support the verification of this constraint and to support the keywords related to memory alignment.

2-year Computer Scientist Position at CEA LIST - LSL

Wed, 11 Feb 2026 00:00:00 +0000

Advanced Modular Static Analysis by Integration of Codex into Frama-C

LAnnotate v0.2.5 for Frama-C 32.0 Germanium

Fri, 06 Feb 2026 00:00:00 +0000

LAnnotate v0.2.5 is out.

The Eva Abstract Debugger: A new way to explore and interact with the Frama-C/Eva static analyzer

Mon, 02 Feb 2026 00:00:00 +0000

This is an invited post by Jules Massart on his 6-month internship (from March to August 2025) in the Frama-C team, where he developed the Eva Abstract Debugger under the supervision of Michele Alberti, David Bühler, and Virgile Prevosto. Building on the original idea of Abstract Debuggers [1], Jules shows how this concept is adapted in Frama-C/Eva to support on-the-fly, interactive guidance of the analysis, rather than post-hoc exploration of its results. He then explains how the transition to Weak Partial Orders [2] enables interactive branch exploration. Together, these advances turn abstract interpretation into an interactive, explorable, and developer-oriented debugging experience.

MetAcsl v0.10 for Frama-C 32.0 Germanium

Thu, 29 Jan 2026 00:00:00 +0000

MetAcsl v0.10 is out.

Release of Frama-C 32.0 (Germanium)

Wed, 03 Dec 2025 00:00:00 +0000

Frama-C 32.0 (Germanium) is out. Download it here.

Internship Position at CEA List - LSL

Mon, 24 Nov 2025 00:00:00 +0000

Agentic Software Specification and Verification with Frama-C

Beta release of Frama-C 32.0~beta (Germanium)

Tue, 04 Nov 2025 00:00:00 +0000

Frama-C 32.0~beta (Germanium) is out. Download it here.

Internship Position at CEA LIST - LSL

Mon, 13 Oct 2025 00:00:00 +0000

Program representations for Deep Learning

Internship Position at CEA LIST - LSL

Mon, 13 Oct 2025 00:00:00 +0000

Cybersecurity and Safety analysis with Frama-C / Eva

Internship Position at CEA LIST - LSL

Mon, 13 Oct 2025 00:00:00 +0000

Parallel Abstract Interpretation

Using Mopsa-Build to help preprocessing and parsing sources for Frama-C

Fri, 19 Sep 2025 00:00:00 +0000

MOPSA is a research-oriented static analyzer which includes a tool called mopsa-build, a wrapper for build commands (esp. make) that helps the analysis. Frama-C can now use the same tool to help automate some parsing steps!

LUncov v0.2.4 for Frama-C 31.0 Gallium

Wed, 09 Jul 2025 00:00:00 +0000

LUncov v0.2.4 is out.

LAnnotate v0.2.4 for Frama-C 31.0 Gallium

Mon, 07 Jul 2025 00:00:00 +0000

LAnnotate v0.2.4 is out.

MetAcsl v0.9 for Frama-C 31.0 Gallium

Wed, 25 Jun 2025 00:00:00 +0000

MetAcsl v0.9 is out.

Frama-Clang v0.0.18 for Frama-C 31.0 Gallium

Wed, 25 Jun 2025 00:00:00 +0000

Frama-Clang v0.0.18 is out.

Release of Frama-C 31.0 (Gallium)

Tue, 24 Jun 2025 00:00:00 +0000

Frama-C 31.0 (Gallium) is out. Download it here.

3-year Computer Scientist Position at CEA LIST - LSL

Fri, 20 Jun 2025 00:00:00 +0000

Design and develop the new symbolic linker of Frama-C

3-year Computer Scientist Position at CEA LIST - LSL

Fri, 20 Jun 2025 00:00:00 +0000

Design and develop the new AST of Frama-C

On Dedicated Specification Languages Beyond ACSL contracts

Fri, 13 Jun 2025 00:00:00 +0000

La critique du langage ne peut éluder ce fait que nos paroles nous engagent et que nous devons leur être fidèles.

MetAcsl v0.9~beta for Frama-C 31.0~beta Gallium

Tue, 27 May 2025 00:00:00 +0000

MetAcsl v0.9~beta is out.

Beta release of Frama-C 31.0~beta (Gallium)

Tue, 27 May 2025 00:00:00 +0000

Frama-C 31.0~beta (Gallium) is out. Download it here.

Frama-Clang v0.0.18~beta for Frama-C 31.0~beta Gallium

Tue, 27 May 2025 00:00:00 +0000

Frama-Clang v0.0.18~beta is out.

Postdoc Position at CEA List - LSL

Thu, 17 Apr 2025 00:00:00 +0000

Runtime Verification of Dependency Properties with Undefinedness

Postdoc Position at CEA List - LSL

Mon, 20 Jan 2025 00:00:00 +0000

Outline Runtime Annotation Checking

PhD Position at CEA List - LSL

Mon, 20 Jan 2025 00:00:00 +0000

Runtime Verification of Multi-State Properties

MetAcsl v0.8 for Frama-C 30.0 Zinc

Wed, 11 Dec 2024 00:00:00 +0000

MetAcsl v0.8 is out.

Frama-Clang v0.0.17 for Frama-C 30.0~ Zinc

Mon, 09 Dec 2024 00:00:00 +0000

Frama-Clang v0.0.17 is out.

Release of Frama-C 30.0 (Zinc)

Thu, 05 Dec 2024 00:00:00 +0000

Frama-C 30.0 (Zinc) is out. Download it here.

MetAcsl v0.8~beta for Frama-C 30.0~ Zinc

Fri, 15 Nov 2024 00:00:00 +0000

MetAcsl v0.8~beta is out.

frama-clang v0.0.17~beta for Frama-C 30.0~ Zinc

Fri, 15 Nov 2024 00:00:00 +0000

frama-clang v0.0.17~beta is out.

Beta release of Frama-C 30.0~beta (Zinc)

Thu, 07 Nov 2024 00:00:00 +0000

Frama-C 30.0~beta (Zinc) is out. Download it here.

Internship Position at CEA List - LSL

Mon, 07 Oct 2024 00:00:00 +0000

Context: CEA LIST, Software Security and Reliability Lab

Internship Position at CEA List - LSL

Mon, 07 Oct 2024 00:00:00 +0000

Context: CEA LIST, Software Security and Reliability Lab

MetAcsl v0.7 for Frama-C 29.0~ Copper

Thu, 03 Oct 2024 00:00:00 +0000

MetAcsl v0.7 is out.

General tips for debugging preprocessing and parsing issues

Wed, 18 Sep 2024 20:00:00 +0000

Motivated by some recent discussions concerning a hard-to-parse code base, this post presents a few techniques used by Frama-C developers to quickly understand and debug parsing-related errors. We are constantly improving parsing and error messages, so hopefully some of these tips will become unnecessary in the future.

Frama-Clang v0.0.16 for Frama-C 29.0 Copper

Thu, 05 Sep 2024 00:00:00 +0000

Frama-Clang v0.0.16 is out.

The Guide to Software Verification with Frama-C is available

Thu, 08 Aug 2024 00:00:00 +0000

The Guide to Software Verification with Frama-C is now available. This book gathers contributions from 39 authors. We hope that it will help you with code analysis using Frama-C!

Frama-C Days 2024 | Slides are available!

Mon, 05 Aug 2024 11:00:00 +0000

This page redirects to the Frama-C Days 2024 Slides Gallery

The slides presented at Frama-C Days 2024 are available

Mon, 05 Aug 2024 00:00:00 +0000

The slides presented at the Frama-C Days 2024 are now available. We would like to thank again all participants for this amazing event!

Release of Frama-C 29.0 (Copper)

Thu, 06 Jun 2024 00:00:00 +0000

Frama-C 29.0 (Copper) is out. Download it here.

Beta release of Frama-C 29.0~beta (Copper)

Tue, 14 May 2024 00:00:00 +0000

Frama-C 29.0~beta (Copper) is out. Download it here.

Postdoc Position at CEA List - LSL

Mon, 22 Apr 2024 00:00:00 +0000

Private and public contracts for ACSL

Postdoc Position at CEA List - LSL

Mon, 22 Apr 2024 00:00:00 +0000

Designing Compilation Techniques for Improving Efficiency of E-ACSL, a Runtime Assertion Checker for C Programs

Frama-C Days 2024 | June, 13 and 14
Maison de la Radio et de la Musique

Mon, 15 Apr 2024 11:00:00 +0000

After 5 years of absence, the Frama-C Days are back!

Frama-C Days 2024

Mon, 15 Apr 2024 00:00:00 +0000

After 5 years of absence, the Frama-C Days are back!

Frama-Clang v0.0.15 for Frama-C 28.0 Nickel

Mon, 25 Mar 2024 00:00:00 +0000

Frama-Clang v0.0.15 is out.

Release of Frama-C 28.1 (Nickel)

Fri, 01 Mar 2024 00:00:00 +0000

Frama-C 28.1 (Nickel) is out. Download it here.

MetAcsl v0.6 for Frama-C 28.0 Nickel

Fri, 16 Feb 2024 00:00:00 +0000

MetAcsl v0.6 is out.

New machdep mechanism in Frama-C

Mon, 29 Jan 2024 12:00:00 +0000

A machdep (for machine-dependent) in Frama-C is a set of architecture-specific configurations, which include: integer sizes, predefined macros, compiler type, standard library constants, etc. They are essential when analyzing embedded, non-portable code. Thanks to some C11 features, the machdep generation mechanism has been revised in Frama-C, allowing users to more easily and reliably create their own machdeps. In this post, we briefly present the changes and how they will help users. Users only interested with how to use the new mechanism may want to jump directly to this section.

Internship Position at CEA LIST - LSL

Thu, 07 Dec 2023 00:00:00 +0000

Release of Frama-C 28.0 (Nickel)

Thu, 30 Nov 2023 00:00:00 +0000

Frama-C 28.0 (Nickel) is out. Download it here.

MetAcsl for Frama-C 27.x Cobalt

Tue, 07 Nov 2023 00:00:00 +0000

Following the release of Frama-C 27.0 (Cobalt), MetAcsl v0.5 is out. The corresponding opam package should be available soon.

Permanent Computer Scientist Position at CEA LIST - LSL

Thu, 26 Oct 2023 00:00:00 +0000

LSL Laboratory

Beta release of Frama-C 28.0~beta (Nickel)

Thu, 26 Oct 2023 00:00:00 +0000

Frama-C 28.0~beta (Nickel) is out. Download it here.

Release of Frama-Clang 0.0.14

Thu, 07 Sep 2023 00:00:00 +0000

Frama-Clang 0.0.14 is out. You can download the sources here.

Release of Frama-C 27.1 (Cobalt)

Tue, 18 Jul 2023 00:00:00 +0000

Frama-C 27.1 (Cobalt) is out. Download it here.

Release of Frama-C 27.0 (Cobalt)

Thu, 15 Jun 2023 00:00:00 +0000

Frama-C 27.0 (Cobalt) is out. Download it here.

Beta release of Frama-C 27.0~beta (Cobalt)

Tue, 16 May 2023 00:00:00 +0000

Frama-C 27.0~beta (Cobalt) is out. Download it here.

Cyberhackathon Frama-C + Binsec

Fri, 28 Apr 2023 00:00:00 +0000

If you are near Paris, come to the Cyber-hackathon Frama-C + Binsec, on 28/04 from 9h to 17h, at CEA List, in the Paris-Saclay campus (Nano-Innov, 2 bd Thomas Gobert, 91120 Palaiseau)!

Cyberhackathon - Frama-C + Binsec - 28/04/23

Mon, 27 Mar 2023 11:00:00 +0000

(This is an announcement for an event near Paris; first follows the French version, then an English version.)

3-year Engineer Position at CEA LIST - LSL

Tue, 28 Feb 2023 00:00:00 +0000

Mission

3-year Computer Scientist Position at CEA LIST - LSL

Tue, 28 Feb 2023 00:00:00 +0000

Mission

3-year Engineer Position at CEA LIST - LSL

Tue, 28 Feb 2023 00:00:00 +0000

Mission

3-year Computer Scientist Position at CEA LIST - LSL

Tue, 28 Feb 2023 00:00:00 +0000

Mission

Release of Frama-C 26.1 (Iron)

Wed, 15 Feb 2023 00:00:00 +0000

Frama-C 26.1 (Iron) is out. Download it here.

Using Singularity/Apptainer for easy-to-use Docker images

Wed, 01 Feb 2023 18:00:00 +0000

The Frama-C Docker images are useful for continuous integration, but for interactive use, they are not very practical: by default, Docker does not provide access to the local filesystem, and running the Frama-C GUI requires using derived tools such as x11docker. In this post, we briefly show an alternative, with Singularity, which has the advantages of including, by default, host filesystem integration and graphical application support without additional configuration.

E-ACSL now works in Frama-C Docker images

Tue, 20 Dec 2022 11:00:00 +0000

The Frama-C Docker images available on Docker Hub were based on Alpine Linux, which allows for minimal sizes. However, its reliance on musl instead of the GNU libc (present in most Linux distributions) led to incompatibility issues with the E-ACSL plug-in. For this reason, current and future Docker images will be based on Debian instead.

MetAcsl for Frama-C 26.0 Iron

Fri, 09 Dec 2022 00:00:00 +0000

Following the release of Frama-C 26.0 (Iron), MetAcsl v0.4 is out. The corresponding opam package should be available soon.

Frama-C 26 (Iron): a release with several irons in the fire

Tue, 29 Nov 2022 08:00:00 +0000

Frama-C 26 (Iron) has been released, and as always, it contains several improvements among different plug-ins. In this blog post, we will present some of them, with very short examples. This list of features is based on the main changes since the 25.0 (Manganese) release.

Release of Frama-C 26.0 (Iron)

Wed, 23 Nov 2022 00:00:00 +0000

Frama-C 26.0 (Iron) is out. Download it here.

SuperTest and Frama-C: a Clash of Titans

Wed, 16 Nov 2022 16:00:00 +0000

This post has been co-written with Solid Sands; it is also available at the Solid Sands blog.

Internship Position at CEA LIST - LSL

Fri, 04 Nov 2022 00:00:00 +0000

Deep Learning for improving formal verification with Frama-C / Eva

Beta release of Frama-C 26.0~beta (Iron)

Fri, 28 Oct 2022 00:00:00 +0000

Frama-C 26.0~beta (Iron) is out. Download it here.

Internship Position at CEA LIST - LSL

Fri, 21 Oct 2022 00:00:00 +0000

Cybersecurity and Safety analysis with Frama-C / Eva

Release of Frama-Clang 0.0.13

Thu, 06 Oct 2022 00:00:00 +0000

Frama-Clang 0.0.13 is out. Download it here.

Frama-C 25 includes a preview version of Ivette, the new Frama-C GUI

Tue, 12 Jul 2022 15:00:00 +0000

The Frama-C GUI, based on GTK, is undergoing a retirement process; Ivette, the new graphical interface, will replace it in a few versions. The first public preview of Ivette has shipped with Frama-C 25.0 (Manganese). This post will briefly present how to compile and run it. It also illustrates some features with screenshots.

Release of Frama-C 25.0 (Manganese)

Tue, 21 Jun 2022 00:00:00 +0000

Frama-C 25.0 (Manganese) is out. Download it here.

Beta release of Frama-C 25.0~beta (Manganese)

Wed, 11 May 2022 00:00:00 +0000

Frama-C 25.0~beta (Manganese) is out. Download it here.

Test plug-ins (re-)released: LUncov, LAnnotate, LReplay (all part of LTest)

Tue, 19 Apr 2022 11:00:00 +0000

The Ltest “meta-plugin” (composed of three parts: LUncov, LAnnotate and LReplay) has been (re-)released on Frama-C’s public Gitlab, and as 3 opam packages: frama-c-luncov, frama-c-lannotate, and lreplay.

Release of Frama-Clang 0.0.12

Tue, 12 Apr 2022 00:00:00 +0000

Frama-Clang 0.0.12 is out. Download it here.

Release of LTest 0.1

Fri, 08 Apr 2022 00:00:00 +0000

The LTest toolset is available in opam. More information here.

Quick ACSL Guide for Eva: a new mini-tutorial

Wed, 06 Apr 2022 17:00:00 +0000

In 2016, a few blog posts (part 1, part 2, part 3) presented a short tutorial on writing ACSL clauses for Eva (back then, the Value Analysis plug-in). A few things changed since then, but posting them again in this blog would lead to the same issue in the future. Instead, we added an annex to the Eva user manual. This annex, titled ACSL Quick Guide for Eva, is targeted towards a slightly different audience, including complete ACSL beginners. In this blog post, we present the annex, its motivation, and summarize its most interesting contents.

PhD Position at CEA LIST - LSL

Mon, 28 Mar 2022 00:00:00 +0000

Machine Learning for Improving Formal Verification of Code

Permanent Computer Scientist Position at CEA LIST - LSL

Tue, 01 Feb 2022 00:00:00 +0000

Mission

Release of Frama-C 24.0 (Chromium)

Tue, 30 Nov 2021 00:00:00 +0000

Frama-C 24.0 (Chromium) is out. Download it here.

Beta release of Frama-C 24.0-beta (Chromium)

Thu, 04 Nov 2021 00:00:00 +0000

Frama-C 24.0-beta (Chromium) is out. Download it here.

Running old Frama-C versions from Docker images

Fri, 15 Oct 2021 16:00:00 +0000

There are several reasons one might want to run an old version of Frama-C: - to test some outdated plugin which is only compatible with a previous version; - to re-run analyses mentioned in an old tutorial or blog post; - to compare results between Frama-C versions; - for nostalgia’s sake.

PhD Position at CEA List - LSL

Thu, 05 Aug 2021 00:00:00 +0000

Outline Runtime Assertion Checking

Postdoc Position at CEA List - LSL

Thu, 05 Aug 2021 00:00:00 +0000

Control Flow Integrity for Remote Attestation

Release of Frama-C 23.1 (Vanadium)

Wed, 21 Jul 2021 00:00:00 +0000

Frama-C 23.1 (Vanadium) is out. Download it here.

Release of Frama-Clang 0.0.11

Tue, 13 Jul 2021 00:00:00 +0000

Frama-Clang 0.0.11 is out. Download it here.

Release of Frama-C 23.0 (Vanadium)

Tue, 06 Jul 2021 00:00:00 +0000

Frama-C 23.0 (Vanadium) is out. Download it here.

Admit and check annotations in ACSL

Thu, 10 Jun 2021 10:00:00 +0000

In Frama-C 23 (Vanadium), two new kinds of ACSL annotations are available, to complement assert: the admit and check annotations. In a nutshell, assert P is equivalent to check P; admit P. The former allows easier checking of the validity of predicates, while the latter documents the introduction of external evidence into a proof. In this blog post, we show a few examples where they may be useful, and also a few pitfalls to avoid.

Beta release of Frama-C 23.0~rc1 (Vanadium)

Thu, 20 May 2021 00:00:00 +0000

Frama-C 23.0~rc1 (Vanadium) is out. Download it here.

Frama-C GUI on the browser, via Docker

Tue, 16 Mar 2021 11:00:00 +0000

New Frama-C Docker images, with a graphical interface, are available in the Docker Hub. They allow running Frama-C via a browser, on Windows, macOS and Linux.

Release of Frama-Clang 0.0.10

Mon, 08 Mar 2021 00:00:00 +0000

Frama-Clang 0.0.10 is out. Download it here.

When benchmarking Frama-C, consider option -no-autoload-plugins

Tue, 16 Feb 2021 11:00:00 +0000

When using Frama-C in a series of benchmarks or test suites, especially when they consist of several small programs, consider using -no-autoload-plugins for better performance. This post explains why it is useful, as well as its downsides.

Frama-C RSS News and Blogs

Release of Frama-C 32.1 (Germanium)

Frama-Clang v0.0.19 for Frama-C 32.0 Germanium

Pointer alignment verification

2-year Computer Scientist Position at CEA LIST - LSL

Advanced Modular Static Analysis by Integration of Codex into Frama-C

LAnnotate v0.2.5 for Frama-C 32.0 Germanium

The Eva Abstract Debugger: A new way to explore and interact with the Frama-C/Eva static analyzer

MetAcsl v0.10 for Frama-C 32.0 Germanium

Release of Frama-C 32.0 (Germanium)

Internship Position at CEA List - LSL

Agentic Software Specification and Verification with Frama-C

Beta release of Frama-C 32.0~beta (Germanium)

Internship Position at CEA LIST - LSL

Program representations for Deep Learning

Internship Position at CEA LIST - LSL

Cybersecurity and Safety analysis with Frama-C / Eva

Internship Position at CEA LIST - LSL

Parallel Abstract Interpretation

Using Mopsa-Build to help preprocessing and parsing sources for Frama-C

LUncov v0.2.4 for Frama-C 31.0 Gallium

LAnnotate v0.2.4 for Frama-C 31.0 Gallium

MetAcsl v0.9 for Frama-C 31.0 Gallium

Frama-Clang v0.0.18 for Frama-C 31.0 Gallium

Release of Frama-C 31.0 (Gallium)

3-year Computer Scientist Position at CEA LIST - LSL

Design and develop the new symbolic linker of Frama-C

3-year Computer Scientist Position at CEA LIST - LSL

Design and develop the new AST of Frama-C

On Dedicated Specification Languages Beyond ACSL contracts

MetAcsl v0.9~beta for Frama-C 31.0~beta Gallium

Beta release of Frama-C 31.0~beta (Gallium)

Frama-Clang v0.0.18~beta for Frama-C 31.0~beta Gallium

Postdoc Position at CEA List - LSL

Runtime Verification of Dependency Properties with Undefinedness

Postdoc Position at CEA List - LSL

Outline Runtime Annotation Checking

PhD Position at CEA List - LSL

Runtime Verification of Multi-State Properties

MetAcsl v0.8 for Frama-C 30.0 Zinc

Frama-Clang v0.0.17 for Frama-C 30.0~ Zinc

Release of Frama-C 30.0 (Zinc)

MetAcsl v0.8~beta for Frama-C 30.0~ Zinc

frama-clang v0.0.17~beta for Frama-C 30.0~ Zinc

Beta release of Frama-C 30.0~beta (Zinc)

Internship Position at CEA List - LSL

Context: CEA LIST, Software Security and Reliability Lab

Internship Position at CEA List - LSL

Context: CEA LIST, Software Security and Reliability Lab

MetAcsl v0.7 for Frama-C 29.0~ Copper

General tips for debugging preprocessing and parsing issues

Frama-Clang v0.0.16 for Frama-C 29.0 Copper

The Guide to Software Verification with Frama-C is available

Frama-C Days 2024 | Slides are available!

The slides presented at Frama-C Days 2024 are available

Release of Frama-C 29.0 (Copper)

Beta release of Frama-C 29.0~beta (Copper)

Postdoc Position at CEA List - LSL

Private and public contracts for ACSL

Postdoc Position at CEA List - LSL

Designing Compilation Techniques for Improving Efficiency of E-ACSL, a Runtime Assertion Checker for C Programs

Frama-C Days 2024 | June, 13 and 14 Maison de la Radio et de la Musique

Frama-C Days 2024

Frama-Clang v0.0.15 for Frama-C 28.0 Nickel

Release of Frama-C 28.1 (Nickel)

MetAcsl v0.6 for Frama-C 28.0 Nickel

New machdep mechanism in Frama-C

Internship Position at CEA LIST - LSL

Verifying C Programs with Abstraction and Refinements

Release of Frama-C 28.0 (Nickel)

MetAcsl for Frama-C 27.x Cobalt

Permanent Computer Scientist Position at CEA LIST - LSL

LSL Laboratory

Beta release of Frama-C 28.0~beta (Nickel)

Release of Frama-Clang 0.0.14

Release of Frama-C 27.1 (Cobalt)

Release of Frama-C 27.0 (Cobalt)

Beta release of Frama-C 27.0~beta (Cobalt)

Cyberhackathon Frama-C + Binsec

Cyberhackathon - Frama-C + Binsec - 28/04/23

Frama-C Days 2024 | June, 13 and 14
Maison de la Radio et de la Musique