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Open AccessProceedings ArticleDOI

Efficient conflict driven learning in a boolean satisfiability solver

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TLDR
This paper generalizes various conflict driven learning strategies in terms of different partitioning schemes of the implication graph to re-examine the learning techniques used in various SAT solvers and propose an array of new learning schemes.
Abstract
One of the most important features of current state-of-the-art SAT solvers is the use of conflict based backtracking and learning techniques. In this paper, we generalize various conflict driven learning strategies in terms of different partitioning schemes of the implication graph. We re-examine the learning techniques used in various SAT solvers and propose an array of new learning schemes. Extensive experiments with real world examples show that the best performing new learning scheme has at least a 2/spl times/ speedup compared with learning schemes employed in state-of-the-art SAT solvers.

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Citations
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Journal ArticleDOI

A Framework for Certified Boolean Branch-and-Bound Optimization

TL;DR: An abstract DPLL-based branch-and-bound algorithm that can model optimization concepts such as cost- based propagation and cost-based backjumping is introduced and its uniform method for generating independently verifiable optimality proofs is introduced.
Book ChapterDOI

Satisfiability Checking for PC(ID)

TL;DR: The satisifiability problem for PC(ID), its propositional fragment is studied, a framework for model generation in this logic is developed, an algorithm is presented and its correctness is proved.
Book ChapterDOI

QBF reasoning on real-world instances

TL;DR: It is shown that monotone literal fixing is the most important technique in order to improve capacity, followed by learning and the heuristics, and all the techniques positively contribute to QuBE performances on average.
Journal ArticleDOI

Functional test generation based on word-level SAT

TL;DR: In this article, two approaches that enhance the capability of functional test generation by preserving arithmetic operators in the design are presented. But they are not directly applicable to behavioral and RTL designs containing significant arithmetic components.
Proceedings ArticleDOI

Improving SAT-solving with Machine Learning

TL;DR: This project aimed to improve the runtime of Minisat, a Conflict-Driven Clause Learning (CDCL) solver that solves the Propositional Boolean Satisfiability (SAT) problem, and used a logistic regression model to predict the satisfiability of propositional boolean formulae after fixing the values of a certain fraction of the variables in each formula.
References
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Book

Computers and Intractability: A Guide to the Theory of NP-Completeness

TL;DR: The second edition of a quarterly column as discussed by the authors provides a continuing update to the list of problems (NP-complete and harder) presented by M. R. Garey and myself in our book "Computers and Intractability: A Guide to the Theory of NP-Completeness,” W. H. Freeman & Co., San Francisco, 1979.
Book

Introduction to Algorithms

TL;DR: The updated new edition of the classic Introduction to Algorithms is intended primarily for use in undergraduate or graduate courses in algorithms or data structures and presents a rich variety of algorithms and covers them in considerable depth while making their design and analysis accessible to all levels of readers.
Book

Genetic Algorithms

Journal ArticleDOI

Tabu Search—Part II

TL;DR: The elements of staged search and structured move sets are characterized, which bear on the issue of finiteness, and new dynamic strategies for managing tabu lists are introduced, allowing fuller exploitation of underlying evaluation functions.