poster Home page

APRON numerical abstract domain library


The APRON library is dedicated to the static analysis of the numerical variables of a program by Abstract Interpretation. The aim of such an analysis is to infer invariants about these variables. like 1<=x+y<=z, which holds during any execution of the program. You may look at to the Interproc analyzer for an online demonstration of static analysis.

The APRON library is intended to be a common interface to various underlying libraries/abstract domains and to provide additional services that can be implemented independently from the underlying library/abstract domain, as shown by the poster on the right (presented at the SAS 2007 conference. You may also look at:

Currently, APRON provides a C interface and an OCaml interface. There also exists a C++ interface, which is more experimental.

The version 0.9.10 (10th septembre 2009) contains 3 libraries and 4 abstract domains:

It also provides an optional interface to the Parma Polyhedra Library, which adds


The online Interproc static analyzer illustrates the use of the APRON library in static analysis.


APRON is a free software under LGPL license, except the wrappers related to the PPL library, which follows the GPL license of the PPL library.




Current version: 0.9.10

As the library may still contain subtle bugs, we strongly suggest to be up-to-date with the most recent version.

Older versions


B. Jeannet and A. Miné. APRON: A library of numerical abstract domains for static analysis. In Computer Aided Verification, CAV'2009, volume 5643 of LNCS, pages 661-667, 2009.