---
layout: default
date: "11-05-2022"
short_title: Frama-C 25.0~beta (Manganese)
title: Beta release of Frama-C 25.0~beta (Manganese)
link: /fc-versions/manganese.html
---

Frama-C 25.0~beta (Manganese) is out. Download it [here](/fc-versions/manganese.html).

Main changes with respect to Frama-C 24 (Chromium) include:

#### Kernel

- The experimental AST Diff module allows to compute difference between the AST
  of two projects
- significant changes in AST types that might break existing development

#### E-ACSL

- add support for Linux's pthread concurrency

#### EVA

- New public API to run the analysis and access its results, intended to replace the old API in Db.Value.
- Improved multidim domain: it is now more precise and more robust, and is able to infer simple array invariants and disjunctive struct invariants.

#### WP

- uses Why3 1.5.0
- new supported ACSL features : decreases clause and general measures for variant and decreases
- new tactics: Clear for hypothesis removal and ModMask for rewriting of mask and modulos
- removed deprecated legacy WP engine and native prover output (always use Why3)
- fixes loop invariant order and collect more hypotheses when proving them

#### Ivette (New Frama-C GUI)

We are introducing Ivette, a new GUI for Frama-C.
In this preliminary version, only EVA and some of its derived plug-ins are supported.

Build & install instructions are in `ivette/INSTALL.md` from the source tarball.
To try it, simply use `ivette` in replacement of `frama-c-gui`.
Your feedback is welcome.

Have fun !