Computer Science > Logic in Computer Science
[Submitted on 30 Apr 2021 (v1), last revised 25 Jan 2022 (this version, v2)]
Title:Temporal Stream Logic modulo Theories (Full Version)
View PDFAbstract:Temporal stream logic (TSL) extends LTL with updates and predicates over arbitrary function terms. This allows for specifying data-intensive systems for which LTL is not expressive enough. In the semantics of TSL, functions and predicates are left uninterpreted. In this paper, we extend TSL with first-order theories, enabling us to specify systems using interpreted functions and predicates such as incrementation or equality. We investigate the satisfiability problem of TSL modulo the standard underlying theory of uninterpreted functions as well as with respect to Presburger arithmetic and the theory of equality: For all three theories, TSL satisfiability is highly undecidable. Nevertheless, we identify three fragments of TSL for which the satisfiability problem is (semi-)decidable in the theory of uninterpreted functions. Despite the high undecidability, we present an algorithm - which is not guaranteed to terminate - for checking the satisfiability of a TSL formula in the theory of uninterpreted functions and evaluate it: It scales well and is able to validate assumptions in a real-world system design.
Submission history
From: Noemi Passing [view email][v1] Fri, 30 Apr 2021 13:22:41 UTC (65 KB)
[v2] Tue, 25 Jan 2022 16:00:02 UTC (80 KB)
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