Imported Upstream version 8.5~beta1+dfsg

1 files changed, 20 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/2145.v b/test-suite/bugs/closed/2145.v
new file mode 100644
index 00000000..4dc0de74
--- /dev/null
+++ b/test-suite/bugs/closed/2145.v
@@ -0,0 +1,20 @@
+(* Test robustness of Groebner tactic in presence of disequalities *)
+
+Require Export Reals.
+Require Export Nsatz.
+
+Open Scope R_scope.
+
+Lemma essai :
+ forall yb xb m1 m2 xa ya,
+  xa <> xb ->
+ yb - 2 * m2 * xb = ya - m2 * xa -> 
+ yb - m1 * xb = ya - m1 * xa ->
+ yb - ya = (2 * xb - xa) * m2 -> 
+ yb - ya = (xb - xa) * m1.
+Proof.
+intros.
+(* clear H. groebner used not to work when H was not cleared *)
+nsatz.
+Qed.
+