(set-logic QF_UFLIAFS)
(set-info :status sat)
(declare-sort E 0)
(declare-fun s () (Set E))
(declare-fun t () (Set E))
(declare-fun u () (Set E))
(assert (>= (card (union s t)) 8))
(assert (>= (card (union s u)) 8))
;(assert (<= (card (union t u)) 5))
(assert (<= (card s) 5))
(assert (= (as emptyset (Set E)) (intersection t u)))
(declare-fun x1 () E)
(declare-fun x2 () E)
(declare-fun x3 () E)
(declare-fun x4 () E)
(declare-fun x5 () E)
(declare-fun x6 () E)
(assert (member x1 s))
(assert (member x2 s))
(assert (member x3 s))
(assert (member x4 s))
(assert (member x5 s))
(assert (member x6 s))
(check-sat)