1 files changed, 23 insertions, 0 deletions
diff --git a/test/regress/regress1/sygus/cegar1.sy b/test/regress/regress1/sygus/cegar1.sy
new file mode 100644
index 000000000..ee85db88a
--- /dev/null
+++ b/test/regress/regress1/sygus/cegar1.sy
@@ -0,0 +1,23 @@
+; EXPECT: unsat
+; COMMAND-LINE: --sygus-inv-templ=post --sygus-out=status
+(set-logic LIA)
+
+(synth-inv inv-f ((x Int) (y Int)))
+
+(declare-primed-var x Int)
+(declare-primed-var y Int)
+
+(define-fun pre-f ((x Int) (y Int)) Bool
+(and (and (>= x 0)
+(and (<= x 2)  
+(<= y 2))) (>= y 0)))
+
+(define-fun trans-f ((x Int) (y Int) (x! Int) (y! Int)) Bool
+(and (= x! (+ x 2)) (= y! (+ y 2))))
+
+(define-fun post-f ((x Int) (y Int)) Bool
+(not (and (= x 4) (= y 0))))
+
+(inv-constraint inv-f pre-f trans-f post-f)
+
+(check-synth)