proposition: Lemma wf_get_fresh_clause_id : forall st, wf_state st -> wf_state (snd (get_fresh_clause_id st)).
proof: Proof. intros. destruct H ; constructor ; simpl;auto. Qed.
imports: Cdcl.PatriciaR Cdcl.KeyInt Cdcl.ReifClasses Cdcl.Lib Bool Setoid ZifyBool ZArith Uint63 Lia List Cdcl.Syntax Cdcl.Clause