Mining definitions in Kissat with Kittens.

IF 0.7 4区计算机科学 Q3 COMPUTER SCIENCE, THEORY & METHODS

Formal Methods in System Design Pub Date : 2022-01-01 Epub Date: 2023-04-24 DOI:10.1007/s10703-023-00421-2

Mathias Fleury, Armin Biere

引用次数: 0

Abstract

Bounded variable elimination is one of the most important preprocessing techniques in SAT solving. It benefits from discovering functional dependencies in the form of definitions encoded in the CNF. While the common approach pioneered in SatELite relies on syntactic pattern matching, our new approach uses cores produced by an embedded SAT solver, Kitten. In contrast to a similar semantic technique implemented in Lingeling based on BDD algorithms to generate irredundant CNFs, our new approach is able to generate DRAT proofs. We further discuss design choices for our embedded SAT solver Kitten. Experiments with Kissat show the effectiveness of this approach.

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Kissat with Kittens中的挖掘定义。

有界变量消去是SAT求解中最重要的预处理技术之一。它受益于以CNF中编码的定义的形式发现功能相关性。虽然在SatELite中开创的常见方法依赖于句法模式匹配，但我们的新方法使用了嵌入式SAT求解器Kitten产生的核心。与Lingeling中基于BDD算法实现的生成无冗余CNF的类似语义技术相比，我们的新方法能够生成DRAT证明。我们进一步讨论了嵌入式SAT求解器Kitten的设计选择。Kissat的实验表明了这种方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Formal Methods in System Design 工程技术-计算机：理论方法

CiteScore

2.00

自引率

12.50%

发文量

审稿时长

>12 weeks

期刊介绍： The focus of this journal is on formal methods for designing, implementing, and validating the correctness of hardware (VLSI) and software systems. The stimulus for starting a journal with this goal came from both academia and industry. In both areas, interest in the use of formal methods has increased rapidly during the past few years. The enormous cost and time required to validate new designs has led to the realization that more powerful techniques must be developed. A number of techniques and tools are currently being devised for improving the reliability, and robustness of complex hardware and software systems. While the boundary between the (sub)components of a system that are cast in hardware, firmware, or software continues to blur, the relevant design disciplines and formal methods are maturing rapidly. Consequently, an important (and useful) collection of commonly applicable formal methods are expected to emerge that will strongly influence future design environments and design methods.