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; EXPECT: sat
(set-option :incremental false)
(set-logic ALL)
(declare-fun x () (Set (Tuple (_ BitVec 1) (_ BitVec 1))))
(declare-fun y () (Set (Tuple (_ BitVec 1) (_ BitVec 1))))
(declare-fun a () (Tuple (_ BitVec 1) (_ BitVec 1)))
(declare-fun b () (Tuple (_ BitVec 1) (_ BitVec 1)))
(declare-fun c () (Tuple (_ BitVec 1) (_ BitVec 1)))
(declare-fun d () (Tuple (_ BitVec 1) (_ BitVec 1)))
(assert (distinct a b))
(assert (distinct c d))
(assert (member a x))
(assert (member b x))
(assert (member a y))
(assert (member b y))
(assert (let ((_let_1 (join x y))) (and (not (member c _let_1)) (not (member d _let_1)))))
(check-sat)
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