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-rw-r--r--doc/sphinx/addendum/micromega.rst4
-rw-r--r--plugins/omega/PreOmega.v2
-rw-r--r--test-suite/success/Nia.v3
3 files changed, 6 insertions, 3 deletions
diff --git a/doc/sphinx/addendum/micromega.rst b/doc/sphinx/addendum/micromega.rst
index 1aa4a23b5c..2ace8a59e1 100644
--- a/doc/sphinx/addendum/micromega.rst
+++ b/doc/sphinx/addendum/micromega.rst
@@ -250,8 +250,8 @@ obtain :math:`-1`. By Theorem :ref:`Psatz <psatz_thm>`, the goal is valid.
.. [#] Support for :g:`nat` and :g:`N` is obtained by pre-processing the goal with
the ``zify`` tactic.
-.. [#] Support for :g:`Z.div` and :g:`Z.modulo` is obtained by pre-processing the goal with
- the `Z.div_mod_to_quot_rem` tactic, which is called by `zify`.
+.. [#] Support for :g:`Z.div` and :g:`Z.modulo` may be obtained by pre-processing the goal with
+ the ``Z.div_mod_to_quot_rem`` tactic after manually running ``zify``.
.. [#] Sources and binaries can be found at https://projects.coin-or.org/Csdp
.. [#] Variants deal with equalities and strict inequalities.
.. [#] In practice, the oracle might fail to produce such a refutation.
diff --git a/plugins/omega/PreOmega.v b/plugins/omega/PreOmega.v
index 1e0922e1ca..08bfec84bc 100644
--- a/plugins/omega/PreOmega.v
+++ b/plugins/omega/PreOmega.v
@@ -455,4 +455,4 @@ Ltac zify_N := repeat zify_N_rel; repeat zify_N_op; unfold Z_of_N' in *.
(** The complete Z-ification tactic *)
-Ltac zify := repeat (zify_nat; zify_positive; zify_N); zify_op; Z.div_mod_to_quot_rem.
+Ltac zify := repeat (zify_nat; zify_positive; zify_N); zify_op.
diff --git a/test-suite/success/Nia.v b/test-suite/success/Nia.v
index da0b2a7a83..9a13e41e07 100644
--- a/test-suite/success/Nia.v
+++ b/test-suite/success/Nia.v
@@ -2,6 +2,9 @@ Require Import Coq.ZArith.ZArith.
Require Import Coq.micromega.Lia.
Open Scope Z_scope.
+(** Add [Z.div_mod_to_quot_rem] to the end of [zify], just for this file *)
+Ltac zify ::= repeat (zify_nat; zify_positive; zify_N); zify_op; Z.div_mod_to_quot_rem.
+
Lemma Z_zerop_or x : x = 0 \/ x <> 0. Proof. nia. Qed.
Lemma Z_eq_dec_or (x y : Z) : x = y \/ x <> y. Proof. nia. Qed.