Automatic Verification of TLA + Proof Obligations with SMT Solvers [chapter]

Stephan Merz, Hernán Vanzetto
<span title="">2012</span> <i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
TLA + is a formal specification language that is based on ZF set theory and the Temporal Logic of Actions TLA. The TLA + proof system tlaps assists users in deductively verifying safety properties of TLA + specifications. tlaps is built around a proof manager, which interprets the TLA + proof language, generates corresponding proof obligations, and passes them to backend verifiers. In this paper we present a new backend for use with SMT solvers that supports elementary set theory, functions,
more &raquo; ... thmetic, tuples, and records. Type information required by the solvers is provided by a typing discipline for TLA + proof obligations, which helps us disambiguate the translation of expressions of (untyped) TLA + , while ensuring its soundness. Preliminary results show that the backend can help to significantly increase the degree of automation of certain interactive proofs.
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="">doi:10.1007/978-3-642-28717-6_23</a> <a target="_blank" rel="external noopener" href="">fatcat:ee2mekfmvrfqhhq4tzph3irgnu</a> </span>
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