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Logic and Automata Theory

Lecturers: Radu_Iosif and Barbara Jobstmann

Objectives: Many major hardware (Intel, IBM) and software (Microsoft) companies are now using the technique of Model Checking in practice. Examples of its use include the verification of VLSI circuits, communication protocols, software device drivers, real-time embedded systems, and security algorithms. The works of A. Pnueli, E. Clarke, E.A Emerson and J. Sifakis on algorithmic verification of systems using the Model Checking has been awarded the 1996 and 2007 Turing awards. The basis of this work is the relation of logic with automata theory, which was introduced by the seminal works of Buechi (1960) and Rabin (1969). This course is intended to introduce the student to these techniques, focusing on decision methods for classical non-interpreted logics and integer arithmetic theories.

Syllabus:

• Classical first- and second-order logic, finite word and tree automata, closure properties and language emptiness.
• Relationship between Weak Monadic Second-Order Logic and finite automata. Infinite automata on words (Buechi, Mueller) and on trees (Rabin) automata, and their relationship with Monadic Second-Order Logic.
• Game theory. Proof of Rabin's Complementation Theorem. Application of game theory to Mu-calculus, a widely used tool for specification and verification of systems.
• Logical theory of integer arithmetic. Decidability results using both quantifier elimination and automata theory. Cobham's base dependence theorem.

Similar or related lectures:

• A. Pnueli and M. Vardi. Automata-Theoretic Approach to Automated Verification
• V. Kuncak. Software Analysis and Verification
• D. Nickovic. Aperiodic Languages

Bibliography

• M. Vardi. From Philosophical to Industrial Logics slides
• W. Thomas. Handbook of Theoretical Computer Science, Volume B, Chapter 4. Automata on Infinite Objects
• B. Khoussainov and A. Nerode. Automata Theory and its Applications. ISBN 0-8176-4207-2
• D. Perrin and J.E. Pin. Infinite Words. ISBN 0-12-532111-2
• Tree Automata Techniques and Applications Collective Online Book
• M. Vardi. The Buchi Complementation Saga
• S. Schewe. Büchi complementation made tight. STACS 2009
• A genealogy of LTL to Buechi automata translations [1]
• A genealogy of Buechi emptiness checking algorithms [2]
• V. Bruyere, G. Hansel, C. Michaux and R. Villemairez. Logic and p-Recognizable Sets of Integers
• M. Jurdzinski, J. Voege. A Discrete Stratety Improvement Algorithm for Solving Parity Games. pdf
• U. Zwick and M. Paterson. The Complexity of Mean Payoff Games
• Note about Karp's minimal mean-cycle algorithm. ps

Software

• The Mona Project : http://www.brics.dk/mona/
• The Goal Project : http://goal.im.ntu.edu.tw/wiki/doku.php
• LTL2BA: http://www.lsv.ens-cachan.fr/~gastin/ltl2ba/
• GAVS+: An Open Platform for the Research of Algorithmic Game Solving: http://www6.in.tum.de/~chengch/gavs/

ENS Lyon Course on Automata-Theoretic Model Checking

ER01 : vérification et certification du logiciel

• First part: mc1.pdf
• Second part: mc2.pdf
• Related software: http://www-verimag.imag.fr/~iosif/jcat

Ecole Doctorale Grenoble

Ecole Doctorale Mathématiques, Sciences et Technologies de l'Information, Informatique

Slides for lectures on game theory (23/11/2010 and 30/11/2010)

• //Tuesday//, 23/11/2010, Motivation, Terminology, Safety and Buchi Games
• //Tuesday//, 30/11/2010, Parity Games, Relationship between Games and Tree Automata

SNSB Bucharest

Scoala Normala Superioara Bucharest (SNSB)

Outline of the first week (19/04/2010 - 24/04/2010) :

• //Monday.// Introduction, First and Second Order Logics (4h, Radu Iosif)
• //Tuesday.// Automata on Finite Words. Definitions of Recognizability (4h, Radu Iosif)
• //Wednesday.// Regular, Star Free and Aperiodic Languages (4h, Radu Iosif)
• //Thursday.// Automata on Infinite Words (4h, Radu Iosif)
• //Friday.// The McNaughton, Buechi and Ramsey Theorems (4h, Radu Iosif)
• //Saturday.// Linear Temporal Logic (4h, Radu Iosif)

Outline of the second week (24/05/2010 - 29/05/2010) :

• //Monday.// Automata on Finite Trees (4h, Radu Iosif)
• //Tuesday.// Automata on Infinite Trees (4h, Radu Iosif)
• //Wednesday.// Motivation, Terminology, Reachability and Buchi games (4h, Barbara Jobstmann)
• //Thursday.// Obligation and weak-parity games, Parity games (4h, Barbara Jobstmann)
• //Friday.// Games and tree automata, Quantitative Verification and Synthesis, Mean-payoff games (4h, Barbara Jobstmann)
• //Saturday.// Integer Arithmetic, Presburger Arithmetic and Semilinear Sets. Definability and Recognizability (4h, Radu Iosif)