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arXiv 2107.09320cs.CCcs.LO
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QRAT多项式模拟合并解析

QRAT Polynomially Simulates Merge Resolution

Sravanthi Chede, Anil Shukla

摘要:

合并分辨率(MRes [Beyersdorff等人,J. Autom.原因的'2021])是一个量化布尔公式(QBF)的反驳证明系统。每一行MRes都由只有存在字面量的子句组成,以及作为合并映射存储的反模型信息。因此,MRes通过设计进行策略提取。QRAT [Heule等人,J. Autom.原因的'2017]证明系统被设计用于捕获QBF预处理。QRAT可以模拟基于扩展的证明系统$\forall$ Exp+Res和基于CDCL的QBF证明系统LD-Q-Res。原因的'2021],并且被示出对于MRes是容易的,但是需要在Q-Res、QU-Res、CP+ $\forall$ red、$\forall$ Exp+Res、IR-calc和无归约LD-Q-Res中的指数大小证明。在本文中,我们展示了一个简短的QRAT反驳平方等式公式。我们进一步表明,QRAT严格p-模拟MRes。除了强调QRAT系统的功率,这项工作还提出了第一个模拟结果的MRes。

英文摘要:

Merge Resolution (MRes [Beyersdorff et al. J. Autom. Reason.'2021] ) is a refutational proof system for quantified Boolean formulas (QBF). Each line of MRes consists of clauses with only existential literals, together with information of countermodels stored as merge maps. As a result, MRes has strategy extraction by design. The QRAT [Heule et al. J. Autom. Reason.'2017] proof system was designed to capture QBF preprocessing. QRAT can simulate both the expansion-based proof system $\forall$Exp+Res and CDCL-based QBF proof system LD-Q-Res. A family of false QBFs called SquaredEquality formulas were introduced in [Beyersdorff et al. J. Autom. Reason.'2021] and shown to be easy for MRes but need exponential size proofs in Q-Res, QU-Res, CP+$\forall$red, $\forall$Exp+Res, IR-calc and reductionless LD-Q-Res. As a result none of these systems can simulate MRes. In this paper, we show a short QRAT refutation of the SquaredEquality formulas. We further show that QRAT strictly p-simulates MRes. Besides highlighting the power of QRAT system, this work also presents the first simulation result for MRes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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