J 2016

Control Explicit-Data Symbolic Model Checking

BAUCH, Petr, Vojtěch HAVEL and Jiří BARNAT

Basic information

Original name

Control Explicit-Data Symbolic Model Checking

Authors

BAUCH, Petr (203 Czech Republic, belonging to the institution), Vojtěch HAVEL (203 Czech Republic, belonging to the institution) and Jiří BARNAT (203 Czech Republic, guarantor, belonging to the institution)

Edition

ACM Transactions on Software Engineering and Methodology, 2016, 1049-331X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10201 Computer sciences, information science, bioinformatics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.516

RIV identification code

RIV/00216224:14330/16:00088090

Organization unit

Faculty of Informatics

UT WoS

000377289000005

Keywords in English

formal methods; model checking; static analysis; modular arithmetic

Tags

International impact, Reviewed
Změněno: 23/8/2016 11:04, prof. RNDr. Jiří Barnat, Ph.D.

Abstract

V originále

Automatic verification of programs and computer systems with data nondeterminism (e.g., reading from user input) represents a significant and well-motivated challenge. The case of parallel programs is especially difficult, because then also the control flow nontrivially complicates the verification process. We apply the techniques of explicit-state model checking to account for the control aspects of a program to be verified and use set-based reduction of the data flow, thus handling the two sources of nondeterminism separately. We build the theory of set-based reduction using first-order formulae in the bit-vector theory to encode the sets of variable evaluations representing program data. These representations are tested for emptiness and equality (state matching) during the verification, and we harness modern satisfiability modulo theory solvers to implement these tests. We design two methods of implementing the state matching, one using quantifiers and one that is quantifier-free, and we provide both analytical and experimental comparisons. Further experiments evaluate the efficiency of the set-based reduction method, showing the classical, explicit approach to fail to scale with the size of data domains. Finally, we propose and evaluate two heuristics to decrease the number of expensive satisfiability queries, together yielding a 10-fold speedup.

Links

GA15-08772S, research and development project
Name: Analýza korektnosti vícevláknových programů v C a C++
Investor: Czech Science Foundation