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An Update on Deductive Synthesis and Repair in the Leon Tool

Related publications (34)

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Deductive Program Repair, Computer Aided Verification

Viktor Kuncak, Etienne Kneuss

We present an approach to program repair and its application to programs with recursive functions over unbounded data types. Our approach formulates program repair in the framework of deductive synthesis that uses existing program structure as a hint to gu ...

2015

Developing Verified Software Using Leon

Viktor Kuncak

We present Leon, a system for developing functional Scala programs annotated with contracts. Contracts in Leon can themselves refer to recursively defined functions. Leon aims to find counterexamples when functions do not meet the specifications, and proof ...

Springer-Verlag Berlin2015

Counterexample-Guided Quantifier Instantiation for Synthesis in SMT, Computer Aided Verification

Viktor Kuncak, Andrew Joseph Reynolds

We introduce the first program synthesis engine implemented inside an SMT solver. We present an approach that extracts solution functions from unsatisfiability proofs of the negated form of synthesis conjectures. We also discuss novel counterexample-guided ...

2015

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We describe techniques for synthesis and verification of recursive functional programs over unbounded domains. Our techniques build on top of an algorithm for satisfiability modulo recursive functions, a framework for deductive synthesis, and complete synt ...

2013

Synthesis Modulo Recursive Functions

Viktor Kuncak, Etienne Kneuss, Ivan Kuraj, Philippe Paul Henri Suter

2013

An overview of the Leon verification system: verification by translation to recursive functions

Viktor Kuncak, Etienne Kneuss, Régis William Blanc, Philippe Paul Henri Suter

We present the Leon verification system for a subset of the Scala programming language. Along with several functional features of Scala, Leon supports imperative constructs such as mutations and loops, using a translation into recursive functional form. Bo ...

2013

On Verification by Translation to Recursive Functions

Viktor Kuncak, Etienne Kneuss, Régis William Blanc, Philippe Paul Henri Suter

2013

Verification of Imperative Programs in Scala

Régis William Blanc

Safety-critical software systems can only support a limited number of failures. Extensive testing is good at catching errors, however that will never certify their absence. Formal verification is an alternative to testing that can (automatically) provide a ...

2012

Satisfiability Modulo Recursive Programs

Viktor Kuncak, Philippe Paul Henri Suter, Ali Sinan Köksal

We present a semi-decision procedure for checking satisfiability of expressive correctness properties of recursive first-order functional programs. In our approach, both properties and programs are expressed in the same language, a subset of Scala. We impl ...

Springer-Verlag Berlin2011

On Satisfiability Modulo Computable Functions

Viktor Kuncak, Philippe Paul Henri Suter, Ali Sinan Köksal

We present a semi-decision procedure for checking satisfiability of formulas in the language of algebraic data types and integer linear arithmetic extended with user-defined terminating recursive functions. Our procedure is designed to integrate into a DPL ...

2010