{"id":160777,"date":"2011-02-01T00:00:00","date_gmt":"2011-02-01T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/memoir-formal-specs-and-correctness-proofs\/"},"modified":"2018-10-16T20:10:22","modified_gmt":"2018-10-17T03:10:22","slug":"memoir-formal-specs-and-correctness-proofs","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/memoir-formal-specs-and-correctness-proofs\/","title":{"rendered":"Memoir&#8212;Formal Specs and Correctness Proofs"},"content":{"rendered":"<div class=\"asset-content\">\n<p>This tech report presents formal specifications for the Memoir system and proofs of the system&#8217;s correctness. The proofs were constructed manually but have been programmatically machine-verified using the TLA+ Proof System. Taken together, the specifications and proofs contain 61 top-level definitions, 182 LET-IN definitions, 74 named theorems, and 5816 discrete proof steps. The proofs address only the safety of the Memoir system, not the liveness of the system. Safety is proven by showing that a formal low-level specification of the Memoir-Basic system implements a formal high-level specification of desired behavior. The proofs then show that a formal specification of the Memoir-Opt system implements the Memoir-Basic system.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This tech report presents formal specifications for the Memoir system and proofs of the system&#8217;s correctness. The proofs were constructed manually but have been programmatically machine-verified using the TLA+ Proof System. Taken together, the specifications and proofs contain 61 top-level definitions, 182 LET-IN definitions, 74 named theorems, and 5816 discrete proof steps. 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