let contradiction = NegationTactics.contradiction_tac
let cut = PrimitiveTactics.cut_tac
let decompose = EliminationTactics.decompose_tac
-let demodulate = Saturation.demodulate_tac
+let demodulate = Auto.demodulate_tac
let destruct = DiscriminationTactics.destruct_tac
let elim_intros = PrimitiveTactics.elim_intros_tac
let elim_intros_simpl = PrimitiveTactics.elim_intros_simpl_tac