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-rw-r--r--test/regress/regress1/sygus/dt-test-ns.sy14
1 files changed, 14 insertions, 0 deletions
diff --git a/test/regress/regress1/sygus/dt-test-ns.sy b/test/regress/regress1/sygus/dt-test-ns.sy
new file mode 100644
index 000000000..a6e8ac5c2
--- /dev/null
+++ b/test/regress/regress1/sygus/dt-test-ns.sy
@@ -0,0 +1,14 @@
+; EXPECT: unsat
+; COMMAND-LINE: --cegqi-si=all --sygus-out=status
+(set-logic LIA)
+
+(declare-datatypes ((List 0)) (((cons (head Int) (tail List)) (nil))))
+
+(synth-fun f ((x Int)) List)
+
+(declare-var x Int)
+
+(constraint (is-cons (f x)))
+(constraint (and (= (head (f x)) x) (= (head (f x)) (+ 5 (head (tail (f x)))))))
+(check-synth)
+
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