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ESEC/FSE 2022
Mon 14 - Fri 18 November 2022 Singapore
Tue 15 Nov 2022 14:30 - 14:45 at SRC LT 50 - Formal Methods Chair(s): Dirk Beyer

Loops with multiple phases are challenging to verify because they require disjunctive invariants.
Invariants could also have the form of implication between a precondition for the phase and a lemma that is valid throughout the phase.
Such invariant structure is however not widely supported in state-of-the-art verification.
We present a novel SMT-based approach to synthesize implication invariants for multi-phase loops.
Our technique computes Model Based Projections to discover the program's phases and leverages data learning to get relationships among loop variables at an arbitrary place in the loop.
It is effective in the challenging cases of mutually-dependent periodic phases, where many implication invariants need to be discovered simultaneously.
Our approach has shown promising results in its ability to verify programs with complex phase structures.
We have implemented and evaluated our algorithm against several state-of-the-art solvers.

Tue 15 Nov

Displayed time zone: Beijing, Chongqing, Hong Kong, Urumqi change

14:00 - 15:30
Formal MethodsResearch Papers / Demonstrations at SRC LT 50
Chair(s): Dirk Beyer LMU Munich
14:00
15m
Talk
Input Invariants
Research Papers
Dominic Steinhöfel CISPA Helmholtz Center for Information Security, Andreas Zeller CISPA Helmholtz Center for Information Security
DOI Pre-print
14:15
15m
Talk
Modus: A Datalog Dialect for Building Container Images
Research Papers
Chris Tomy University College London, Tingmao Wang University College London, Earl T. Barr University College London, Sergey Mechtaev University College London
DOI
14:30
15m
Talk
Multi-Phase Invariant Synthesis
Research Papers
Daniel Riley Florida State University, Grigory Fedyukovich Florida State University
DOI
14:45
15m
Talk
Parasol: Efficient Parallel Synthesis of Large Model Spaces
Research Papers
Clay Stevens University of Nebraska-Lincoln, Hamid Bagheri University of Nebraska-Lincoln
DOI
15:00
15m
Talk
Neural Termination Analysis
Research Papers
Mirco Giacobbe University of Birmingham, Daniel Kroening University of Oxford, Julian Parsert University of Oxford
DOI
15:15
7m
Talk
SolSEE: A Source-Level Symbolic Execution Engine for Solidity
Demonstrations
Shang-Wei Lin Nanyang Technological University, Palina Tolmach Nanyang Technological University, Singapore, Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore, Ye Liu , Yi Li Nanyang Technological University
Pre-print
15:23
7m
Talk
MpBP: Verifying Robustness of Neural Networks with Multi-Path Bound Propagation
Demonstrations
Ye Zheng Shenzhen University, Shenzhen, China, Jiaxiang Liu Shenzhen University, Xiaomu Shi Shenzhen University