Papers › The Prusti project: Formal verification for Rust

The Prusti project: Formal verification for Rust

20 May 2022NFM 2022 5archive 2025-07-28

Vytautas Astrauskas, Aurel Bílý, Jonáš Fiala, Zachary Grannan, Christoph Matheja, Peter Müller, Federico Poli, Alexander J. Summers

Rust is a modern systems programming language designed to offer both performance and static safety. A key distinguishing feature is a strong type system, which enforces by default that memory is either shared or mutable, but never both. This guarantee is used to prevent common pitfalls such as memory errors and data races. It can also be used to greatly simplify formal verification, as we demonstrated by developing the Prusti verifier, which can verify rich correctness properties of Rust programs with a very modest annotation overhead. In this paper, we provide an overview of the Prusti project. We outline its main design goals, illustrate examples of its use, and discuss important outcomes from the perspectives of a user, a verification expert, and a tool developer.

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