runtimeverification/vlsm

Replace `Lib.ListExtras.last_error` with `stdpp.list.last` in module `ListExtras`

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#39 opened on May 3, 2022

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Proof Engineeringgood first issue

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Description

Refactor the Lib.ListExtras module to define last_error in terms of last and change the existing lemmas about last_error to either be (re)definitions of existing lemmas about last or by proving them using existing results about last

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