| Vol-418 Copyright © 2008 for the individual papers by the papers' authors. Copying permitted for private and academic purposes. Re-publication of material from this volume requires permission by the copyright owners.

# The LPAR 2008 Workshops: KEAPPA and IWIL 2008:

- Knowledge Exchange: Automated Provers and Proof Assistants
- The 7th International Workshop on the Implementation of Logics

### Proceedings of the LPAR 2008 Workshops
Knowledge Exchange: Automated Provers and Proof Assistants, and
The 7th International Workshop on the Implementation of Logics

Doha, Qatar, November 22, 2008

Edited by

### Piotr Rudnicki 1
Geoff Sutcliffe 2
Boris Konev 3
Renate Schmidt 4
Stephan Schulz 5

1) University of Alberta, Canada
2) University of Miami, USA
3) University of Liverpool, United Kingdom
4) University of Manchester, United Kingdom
5) Technische Universität München, Germany

## Table of Contents

1. Automated Reasoning for Mizar: Artificial Intelligence through Knowledge Exchange
   Josef Urban
2. A TLA+ Proof System
   Kaustuv Chaudhuri, Damien Doligez, Leslie Lamport, Stephan Merz
3. The SZS Ontologies for Automated Reasoning Software
   Geoff Sutcliffe
4. An Exchange Format for Modular Knowledge
   Florian Rabe, Michael Kohlhase
5. Connecting Gröbner Bases Programs with Coq to do Proofs in Algebra, Geometry and Arithmetics
   Loïc Pottier
6. Transforming and Analyzing Proofs in the `CERES`-system
   Stefan Hetzl, Alexander Leitsch, Daniel Weller, Bruno Woltzenlogel Paleo
7. Interactive Verification of Concurrent Systems using Symbolic Execution
   Michael Balser, Simon Bäumler, Wolfgang Reif, and Gerhard Schellhorn
8. Learning Techniques for Pseudo-Boolean Solving
   José Santos, Vasco Manquinho
9. Complete Pruning Methods and a Practical Search Strategy for SOL
   Hidetomo Nabeshima, Koji Iwanuma, Katsumi Inoue
10. Proofs and Refutations, and Z3
    Leonardo de Moura, Nikolaj Bjørner

Complete proceedings

submitted by Geoff Sutcliffe, 16-Nov-2008
published on CEUR-WS.org, 17-Nov-2008