Optimal CHC Solving via Termination Proofs
Optimal CHC Solving via Termination Proofs
复制标题
通过终止证明最优 CHC 求解
DOI:
10.1145/3571214
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发表时间:
2023
影响因子:
--
通讯作者:
Unno Hiroshi
中科院分区:
文献类型:
--
作者:
Gu Yu;Tsukada Takeshi;Unno Hiroshi
Motivated by applications to open program reasoning such as maximal specification inference, this paper studiesoptimal CHC solving, a problem to compute maximal and/or minimal solutions of constrained Horn clauses (CHCs). This problem and its subproblems have been studied in the literature, and a major approach is to iteratively improve a solution of CHCs until it becomes optimal. So a key ingredient of optimization methods is the optimality checking of a given solution. We propose a novel optimality checking method, as well as an optimization method using the proposed optimality checker, based on a computational theoretical analysis of the optimality checking problem. The key observation is that the optimality checking problem is closely related to the termination analysis of programs, and this observation is useful both theoretically and practically. From a theoretical perspective, it clarifies a limitation of an existing method and incorrectness of another method in the literature. From a practical perspective, it allows us to apply techniques of termination analysis to the optimality checking of a solution of CHCs. We present an optimality checking method based on constraint-based synthesis of termination arguments, implemented our method, evaluated it on CHCs that encode maximal specification synthesis problems, and obtained promising results.
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DOI:
10.1145/3453483.3454104
发表时间:
2021
期刊:
Proceedings of the 42nd ACM SIGPLAN International Conference on Programming Language Design and Implementation
影响因子:
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作者:
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DOI:
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发表时间:
2021
期刊:
Proceedings of CAV 2021, Springer LNCS
影响因子:
--
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通讯作者:
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DOI:
10.1145/2491956.2462188
发表时间:
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期刊:
ACM-SIGPLAN Symposium on Programming Language Design and Implementation
影响因子:
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作者:
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通讯作者:
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