Complete First-Order Reasoning for Properties of Functional Programs

Author:

Murali Adithya1ORCID,Peña Lucas1ORCID,Jhala Ranjit2ORCID,Madhusudan P.1ORCID

Affiliation:

1. University of Illinois Urbana-Champaign, Urbana, USA

2. University of California San Diego, San Diego, USA

Abstract

Several practical tools for automatically verifying functional programs (e.g., Liquid Haskell and Leon for Scala programs) rely on a heuristic based on unrolling recursive function definitions followed by quantifier-free reasoning using SMT solvers. We uncover foundational theoretical properties of this heuristic, revealing that it can be generalized and formalized as a technique that is in fact complete for reasoning with combined First-Order theories of algebraic datatypes and background theories, where background theories support decidable quantifier-free reasoning. The theory developed in this paper explains the efficacy of these heuristics when they succeed, explain why they fail when they fail, and the precise role that user help plays in making proofs succeed.

Publisher

Association for Computing Machinery (ACM)

Subject

Safety, Risk, Reliability and Quality,Software

Reference79 articles.

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1. Proving Functional Program Equivalence via Directed Lemma Synthesis;Lecture Notes in Computer Science;2024-09-11

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