proposition: Lemma not_fail_insert_normalised_clause : forall i k st, ~ is_fail (insert_normalised_clause i k st).
proof: Proof. unfold insert_normalised_clause. intros. destruct (Annot.elt k); simpl ; congruence. Qed.
imports: Cdcl.PatriciaR Cdcl.KeyInt Cdcl.ReifClasses Cdcl.Lib Bool Setoid ZifyBool ZArith Uint63 Lia List Cdcl.Syntax Cdcl.Clause