X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Flibrary%2Fassembly%2Ftest.ma;h=1fd030efb1bb998c0302fdb3bab8c8f7695ef905;hb=7fe420b959c50f9be603ae9e42a5f87451a1a922;hp=894e1bc96cca0a1702b71c46d354e23dfff5761a;hpb=a85c824c3f86de679b396a02edcfda50f61ab9f5;p=helm.git

diff --git a/matita/library/assembly/test.ma b/matita/library/assembly/test.ma
index 894e1bc96..1fd030efb 100644
--- a/matita/library/assembly/test.ma
+++ b/matita/library/assembly/test.ma
@@ -214,7 +214,9 @@ lemma loop_invariant':
            normalize in ⊢ (? ? (? (? ? % ? ? ? ? ?) ?) ?);
            normalize in ⊢ (? ? (? (? ? ? ? ? ? (? ? % ?) ?) ?) ?);
            cut (y - S n = a);
-            [2: elim daemon | ];
+            [2: rewrite > eq_minus_S_pred;
+                rewrite > H2;
+                reflexivity | ];
            rewrite < Hcut; clear Hcut; clear H3; clear H2; clear a;          
            (* instruction ADDd *)
            letin K ≝