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Ramsey quantifiers have recently been proposed as a unified framework for handling properties of interests in program verification involving proofs in the form of infinite cliques, which are not expressible in first-order logic. Among others, these include liveness verification and monadic decomposability. We present the tool REAL, which implements an efficient elimination of Ramsey quantifiers in existential linear arithmetic theories over integers (LIA), reals (LRA), and the mixed case (LIRA). The tool supports a convenient input format, which is an extension of SMT-LIB over the aforementioned theories with Ramsey quantifiers. We also demonstrate a substantial speedup from the original prototype. As an application, we provide an automatic translation from FASTer (a tool for verifying reachability over infinite-state systems) output format to our extension of SMT-LIB and show how our tool extends FASTer to liveness checking.

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Fast Ramsey Quantifier Elimination in LIRA (with applications to liveness checking)

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Kilian Lichtner,
  • Pascal Bergsträßer,
  • Moses Ganardi,
  • Anthony W. Lin,
  • Georg Zetzsche

摘要

Ramsey quantifiers have recently been proposed as a unified framework for handling properties of interests in program verification involving proofs in the form of infinite cliques, which are not expressible in first-order logic. Among others, these include liveness verification and monadic decomposability. We present the tool REAL, which implements an efficient elimination of Ramsey quantifiers in existential linear arithmetic theories over integers (LIA), reals (LRA), and the mixed case (LIRA). The tool supports a convenient input format, which is an extension of SMT-LIB over the aforementioned theories with Ramsey quantifiers. We also demonstrate a substantial speedup from the original prototype. As an application, we provide an automatic translation from FASTer (a tool for verifying reachability over infinite-state systems) output format to our extension of SMT-LIB and show how our tool extends FASTer to liveness checking.