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; EXPECT: unsat (set-logic HO_UF) (set-info :status unsat) (declare-sort U 0) (declare-fun f (U) U) (declare-fun g (U) U) (declare-fun h (U) U) (declare-fun a () U) (assert (= f g)) (assert (= g h)) (assert (not (= f h))) (check-sat)