Open Scope Z_scope.
(* Pierre L: examples gathered while debugging romega. *)
(* Starting from Coq 8.9 (late 2018), `romega` tactics are deprecated. The tests in this file remain but now call the `lia` tactic. *)
(* Magaud BZ#240 *)
(* Besson BZ#1298 *)

Lemma test_lia9 : forall z z':Z, z<>z' -> z'=z -> False.