Abstract
Symbolic model checkers can construct proofs of properties over very complex models. However, the results reported by the tool when a proof succeeds do not generally provide much insight to the user. It is often useful for users to have traceability information related to the proof: which portions of the model were necessary to construct it. This traceability information can be used to diagnose a variety of modeling problems such as overconstrained axioms and underconstrained properties, and can also be used to measure completeness of a set of requirements over a model. In this paper, we present a new algorithm to efficiently compute the inductive validity core (IVC) within a model necessary for inductive proofs of safety properties for sequential systems. The algorithm is based on the UNSAT core support built into current SMT solvers and a novel encoding of the inductive problem to try to generate a minimal inductive validity core. We prove our algorithm is correct, and describe its implementation in the JKind model checker for Lustre models. We then present an experiment in which we benchmark the algorithm in terms of speed, diversity of produced cores, and minimality, with promising results.
Original language | English (US) |
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Title of host publication | FSE 2016 - Proceedings of the 2016 24th ACM SIGSOFT International Symposium on Foundations of Software Engineering |
Editors | Zhendong Su, Thomas Zimmermann, Jane Cleland-Huang |
Publisher | Association for Computing Machinery |
Pages | 314-325 |
Number of pages | 12 |
ISBN (Electronic) | 9781450342186 |
DOIs | |
State | Published - Nov 1 2016 |
Event | 24th ACM SIGSOFT International Symposium on Foundations of Software Engineering, FSE 2016 - Seattle, United States Duration: Nov 13 2016 → Nov 18 2016 |
Publication series
Name | Proceedings of the ACM SIGSOFT Symposium on the Foundations of Software Engineering |
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Volume | 13-18-November-2016 |
Conference
Conference | 24th ACM SIGSOFT International Symposium on Foundations of Software Engineering, FSE 2016 |
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Country/Territory | United States |
City | Seattle |
Period | 11/13/16 → 11/18/16 |
Bibliographical note
Publisher Copyright:© 2016 ACM.
Keywords
- IC3/PDR
- K-Induction
- Requirements Completeness
- Traceability