fact: Parameter RUpdate : forall Val1 Val2, (Val1 -> Val2 -> Prop) -> Update Val1 -> Update Val2 -> Prop.
imports: Coq(FunctionalExtensionality Arith Lia) Coq(Arith.Peano_dec Arith.Compare_dec) Coq(Relations.Relation_Operators) Coq(List) Chapar(Predefs)