1 files changed, 26 insertions, 0 deletions
diff --git a/test/regress/regress0/bv/ackermann8.smt2 b/test/regress/regress0/bv/ackermann8.smt2
new file mode 100644
index 000000000..2a424e085
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+++ b/test/regress/regress0/bv/ackermann8.smt2
@@ -0,0 +1,26 @@
+; COMMAND-LINE: --ackermann --no-check-models --no-check-proofs --no-check-unsat-cores
+; EXPECT: unsat
+(set-logic QF_UFBV)
+
+(declare-sort S 0)
+(declare-sort T 0)
+
+(declare-fun s1 () S)
+(declare-fun s2 () S)
+(declare-fun s3 () S)
+
+(declare-fun a () (_ BitVec 1))
+(declare-fun b () (_ BitVec 1))
+(declare-fun c () (_ BitVec 1))
+
+(assert (not (= s1 s2)))
+(assert (not (= s2 s3)))
+(assert (not (= s3 s1)))
+
+(assert (not (= a b)))
+(assert (not (= b c)))
+(assert (not (= c a)))
+
+(check-sat)
+(exit)
+