Higher-Order Specifications for Deductive Synthesis of Programs with Pointers
This program is tentative and subject to change.
Synthetic Separation Logic (SSL) is a formalism that powers SuSLik, the state-of-the-art approach for the deductive synthesis of provably-correct programs in C-like languages that manipulate heap-based linked data structures. Despite its expressivity, SSL suffers from two shortcomings that hinder its utility. First, its main specification component, inductive predicates, only admits first-order definitions of data structure shapes, which leads to the proliferation of ``boiler-plate'' predicates for specifying common patterns. Second, SSL requires concrete definitions of data structures to synthesise programs that manipulate them, which results in the need to change a specification for a synthesis task every time changes are introduced into the layout of the involved structures.
We propose to significantly lift the level of abstraction used in writing Separation Logic specifications for synthesis — both simplifying the approach and making the specifications more usable and easy to read and follow. We avoid the need to repetitively re-state low-level representation details throughout the specifications — allowing the reuse of different implementations of the same data structure by abstracting away the details of a specific layout used in memory. Our novel high-level front-end language called Pika significantly improves the expressiveness of SuSLik.
We implemented a layout-agnostic synthesiser from Pika to SuSLik enabling push-button synthesis of C programs with in-place memory updates, along with the accompanying full proofs that they meet Separation Logic-style specifications, from high-level specifications that resemble ordinary functional programs. Our experiments show that our tool can produce C code that is comparable in its performance characteristics and is sometimes faster than Haskell.
This program is tentative and subject to change.
Wed 18 SepDisplayed time zone: Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna change
10:30 - 12:00 | |||
10:30 15mTalk | Inductive Predicate Synthesis Modulo Programs Technical Papers Scott Wesley Dalhousie University, Maria Christakis TU Wien, Jorge A. Navas Certora, Richard Trefler University of Waterloo, Valentin Wüstholz ConsenSys, Arie Gurfinkel University of Waterloo | ||
10:45 15mTalk | Fearless Asynchronous Communications with Timed Multiparty Session Protocols Technical Papers Ping Hou University of Oxford, Nicolas Lagaillardie Imperial College London, Nobuko Yoshida University of Oxford | ||
11:00 15mTalk | Java Bytecode Normalization for Code Similarity Analysis Technical Papers Stefan Schott Heinz Nixdorf Institut, Paderborn University, Serena Elisa Ponta SAP Security Research, Wolfram Fischer SAP Security Research, Jonas Klauke Paderborn University, Eric Bodden Heinz Nixdorf Institut, Paderborn University and Fraunhofer IEM | ||
11:15 15mTalk | Pipit on the Post: proving pre- and post-conditions of reactive systems Technical Papers Amos Robinson Australian National University, Australia, Alex Potanin Australian National University | ||
11:30 15mTalk | Higher-Order Specifications for Deductive Synthesis of Programs with Pointers Technical Papers David Young University of Kansas, USA, Ziyi Yang National University of Singapore, Ilya Sergey National University of Singapore, Alex Potanin Australian National University | ||
11:45 15mTalk | Matching Plans for Frame Inference in Compositional Reasoning Technical Papers Andreas Lööw Imperial College London, Daniele Nantes-Sobrinho Imperial College London, Sacha-Élie Ayoun Imperial College London, Petar Maksimović Imperial College London, UK, Philippa Gardner Imperial College London |