fact: Definition is_cons (id: int) (l : IntMap.ptrie unit) := match IntMap.get' id l with | Some _ => true | _ => false end.
imports: Cdcl.PatriciaR Cdcl.KeyInt Cdcl.ReifClasses Cdcl.Lib Bool Setoid ZifyBool ZArith Uint63 Lia List Cdcl.Syntax Cdcl.Clause