proposition: Lemma eval_neg_literal : forall h, eval_literal (neg_literal h) -> ~ eval_literal h.
proof: Proof. destruct h ; simpl ; auto. Qed.
imports: Cdcl.PatriciaR Cdcl.KeyInt Cdcl.ReifClasses Cdcl.Lib Bool Setoid ZifyBool ZArith Uint63 Lia List Cdcl.Syntax Cdcl.Clause