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; 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)
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