## AI Europe 2016

Partnership between AISB and AI Europe 2016: Next December 5th and 6th in London, AI Europe will bring together the European AI eco-system by gathering new tools and future technologies appearing in professional fields for th...

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## AISB convention 2017

In the run up to AISB2017 convention (http://aisb2017.cs.bath.ac.uk/index.html), I've asked Joanna Bryson, from the organising team, to answer few questions about the convention and what comes with it. Mohammad Majid...

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## Harold Cohen

Harold Cohen, tireless computer art pioneer dies at 87 Harold Cohen at the Tate (1983) Aaron image in background Harold Cohen died at 87 in his studio on 27th April 2016 in Encintias California, USA.The first time I hear...

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## Dancing with Pixies?...

At TEDx Tottenham, London Mark Bishop (the former chair of the Society) demonstrates that if the ongoing EU flagship science project - the 1.6 billion dollar "Human Brain Project” - ultimately succeeds in understanding all as...

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## Computerised Minds. ...

A video sponsored by the society discusses Searle's Chinese Room Argument (CRA) and the heated debates surrounding it. In this video, which is accessible to the general public and those with interest in AI, Olly's Philosophy Tube ...

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## Connection Science

All individual members of The Society for the Study of Artificial Intelligence and Simulation of Behaviour have a personal subscription to the Taylor Francis journal Connection Science as part of their membership. How to Acce...

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## Notice

# AISB event Bulletin Item

## Announcing SMT-COMP 2008: Satisfiability Modulo Theories Competition

CAV'08 Satellite Event 4th International Satisfiability Modulo Theories Competition (SMT-COMP'08) Princeton, USA July 2008 CALL FOR BENCHMARKS CALL FOR ENTRANTS ====================================================================== Decision procedures for checking satisfiability of logical formulas are crucial for many verification applications. Of particular recent interest are solvers for Satisfiability Modulo Theories (SMT). SMT-COMP aims to spur innovation in SMT research by providing a yearly friendly competition for SMT solvers. SMT-COMP came out of discussions surrounding the SMT-LIB initiative, an initiative of the SMT community to build a library of SMT benchmarks in a proposed standard format. SMT-COMP helps serve this goal by contributing collected benchmark formulas used for the competition to the library, and by providing an incentive for implementors of SMT solvers to support the SMT-LIB format. As part of SMT-COMP 2007, a special session was held at SMT Workshop 2007 in which the competitors had a chance to present their tools and discuss them with other competitors. This year, a similar session will be held as part of SMT Workshop 2008 (July 7-8, affiliated with CAV). More information about the SMT Workshop can be found on the web page: http://research.microsoft.com/conferences/SMT08/ The highlights of SMT-COMP 2008 are covered below. For the latest information, please see the SMT-COMP web page at: http://www.smtcomp.org/ ------------------------------------------ Main changes with respect to SMT-COMP 2007 ------------------------------------------ - Use of the SMT-EXEC services for solver submission and execution - Updates to the benchmark selection algorithms - Additional mechanisms for transparency and reproducibility of results - Existence of a two-day grace period for bug fixing For more detailed information please refer to the rules posted at http://www.smtcomp.org/. --------------- Benchmarks --------------- The potential benchmark divisions for this year include all of the divisions represented last year. We do not anticipate new divisions this year unless quality benchmarks are collected. For detailed descriptions of the divisions, refer to the SMT-LIB web page at http://www.smtlib.org/ * QF_UF (Uninterpreted Functions): quantifier-free formulas whose satisfiability is to be decided modulo the empty theory. Each benchmark may introduce its own uninterpreted function and predicate symbols. * QF_IDL (Integer Difference Logic): quantifier-free formulas to be tested for satisfiability modulo a background theory of integer arithmetic. The syntax of atomic formulas is restricted to difference logic, i.e. x - y op c, where op is either equality or inequality and c is an integer constant. * QF_RDL (Real Difference Logic): this division is like QF_IDL, except that the background theory is real arithmetic. * QF_UFIDL (Integer Difference Logic with Uninterpreted Functions): this division contains benchmarks in a logic which is similar to QF_IDL, except that it also allows uninterpreted functions and predicates. * QF_LIA (Linear Integer Arithmetic): quantifier-free formulas to be tested for satisfiability modulo a background theory of integer arithmetic. The syntax of atomic formulas is restricted to contain only linear terms. * QF_LRA (Linear Real Arithmetic): this division is like QF_LIA, except that the background theory is real arithmetic. * QF_UFLIA (Linear Integer Arithmetic with Uninterpreted Functions): this division contains benchmarks in a logic which is similar to QF_LIA, except that it also allows uninterpreted functions and predicates. * QF_AX (Arrays with Extensionality): quantifier-free formulas to be tested for satisfiability modulo a background theory of arrays which includes the extensionality axiom. * QF_AUFLIA (Linear Integer Arithmetic with Uninterpreted Functions and Arrays): quantifier-free formulas to be tested for satisfiability modulo a background theory combining linear integer arithmetic, uninterpreted function and predicate symbols, and extensional arrays. * QF_BV (Fixed-size Bit-vectors): quantifier-free formulas over bit vectors of fixed size. * QF_AUFBV (Bit-vectors with Arrays and Uninterpreted Functions): quantifier-free formulas over bit vectors of fixed size, with arrays and unintepreted functions and predicate symbols. * AUFLIA+p (Linear Integer Arithmetic with Uninterpreted Functions and Arrays): quantified formulas to be tested for satisfiability modulo a background theory combining linear integer arithmetic, uninterpreted function and predicate symbols, and extensional arrays. Benchmarks include patterns for guiding instantiation mechanisms. * AUFLIA-p (Linear Integer Arithmetic with Uninterpreted Functions and Arrays): formulas from AUFLIA+p once all patterns have been removed. * AUFLIRA+p (Arrays, Uninterpreted Functions, and Linear Arithmetic): quantifier formulas with arrays of reals indexed by integers (Array1), arrays of Array1 indexed by integers (Array2), and linear arithmetic over the integers and reals. Benchmarks include patterns for guiding instantiation mechanisms. * AUFLIRA-p (Arrays, Uninterpreted Functions, and Linear Arithmetic): formulas from AUFLIRA+p once all patterns have been removed. As with last year, we reserve the right to remove benchmark divisions if we do not receive enough quality benchmarks or enough solvers in a particular division. If you have access to benchmarks in any of these divisions, even if they are not in the SMT-LIB format, please contact one of the organizers (see below). --------------- Solvers --------------- Please refer to http://www.smtcomp.org/ for complete details on entering the competition. --------------- Travel Grants --------------- Microsoft Research has generously donated funds to help pay for travel for participants, especially students, who might otherwise be unable to attend. Because funds are limited, we will use a bidding process to assign grants. The process works like this: 1. Those interested should send an email by June 1 to Clark Barrett indicating: * Your name and affiliation. * Whether you are a student. * The name of the solver you are submitting and your role in the development of the solver. * The amount of assistance you would need to be able to attend. 2. On or before June 11, we will notify those whose bids have been accepted (acceptance will be based primarily on the amount requested, with lower bids having precedence, but we will also take into account the role of the applicant in the development of the solver and whether or not the applicant is a student). 3. Following the conclusion of the competition, reimbursement checks will be issued to those whose bids were accepted and who attended. --------------- Important Dates --------------- * May 1: First version of the benchmark library posted for comment. * June 1: Revised version of the benchmark library posted. Travel grant applications due. * June 11: Travel grant notification sent. * July 4: Final version of solvers due via SMT-EXEC,with magic (7pm ET) numbers for pseudo-random selection of benchmarks. * July 6: Close of two-day grace period for resubmission of (7pm ET) entries. * July 7-8: SMT Workshop. * July 9-13: Anticipated dates for competition. ----------------- Organizers ----------------- Clark Barrett (New York University, barrett@cs.nyu.edu) Morgan Deters (Technical Univ. of Catalonia, mdeters@lsi.upc.edu) Albert Oliveras (Technical Univ. of Catalonia, oliveras@lsi.upc.edu) Aaron Stump (Washington University in St. Louis, stump@cse.wustl.edu) ---------------- More Information ---------------- For details on the competition, see http://www.smtcomp.org/ For more information on the SMT-LIB format, see http://www.smtlib.org/ For more information about the SMT Workshop, see http://research.microsoft.com/conferences/SMT08/ SMT-COMP is partially sponsored by the U.S. National Science Foundation, under grant CNS-0551697. |