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; EXPECT: unsat
(set-option :incremental false)
(set-logic ALL)
(declare-fun x () (Set (Tuple Int Int)))
(declare-fun y () (Set (Tuple Int Int)))
(declare-fun r () (Set (Tuple Int Int)))
(declare-fun z () (Set Int))
(declare-fun f () Int)
(declare-fun g () Int)
(declare-fun e () (Tuple Int Int))
(assert (= e (mkTuple 4 f)))
(assert (member e x))
(declare-fun d () (Tuple Int Int))
(assert (= d (mkTuple g 3)))
(assert (member d y))
(assert (= z (union (singleton f) (singleton g))))
(assert (= 0 (- f g)))
(declare-fun a () (Tuple Int Int))
(assert (= a (mkTuple 4 3)))
(assert (= r (join x y)))
(assert (not (member a r)))
(check-sat)
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