Improving Eliminate-Irrelevance for ACL2 Matt Kaufmann (joint work with J Moore) October 14, 2016 ACL2 Seminar Abstract: One of the ``waterfall'' processes used by ACL2 (and its predecessor, NQTHM) is the ``eliminate-irrelevance'' process. This process can heuristically delete information from a goal before entering a sub-induction. This talk will: o review the ACL2 waterfall and its eliminate-irrelevance clause-processor, o present a recent change in its heuristics, and o remark on considerations when designing and implementing that change.