A program verifier is a tool that allows developers to prove that their code satisfies its specification for every possible input and every thread schedule. These lecture notes describe a verifier for concurrent programs called Chalice. Chalice\u2019s verification methodology centers around permissions and permission transfer. In particular, a memory location may be accessed by a thread only if that thread has permission to do so. Proper use of permissions allows Chalice to deduce upper bounds on the set of locations modifiable by a method and guarantees the absence of data races for concurrent programs. The lecture notes informally explain how Chalice works through various examples.<\/p>\n","protected":false},"excerpt":{"rendered":"
A program verifier is a tool that allows developers to prove that their code satisfies its specification for every possible input and every thread schedule. These lecture notes describe a verifier for concurrent programs called Chalice. Chalice\u2019s verification methodology centers around permissions and permission transfer. 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