fact: Definition is_skip (s: Prog) := match s with | put _ _ _ _ => False | get _ _ _ => False | skip _ => True | fault _ => False end.
imports: Coq(FunctionalExtensionality Arith Lia) Coq(Arith.Peano_dec Arith.Compare_dec) Coq(Relations.Relation_Operators) Coq(List) Chapar(Predefs)