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; EXPECT: unsat
; COMMAND-LINE: --cegqi-si
(set-logic LIA)

;; f1 is x plus 2 ;; f2 is 2x plus 5

(define-fun let0 ((x Int) (y Int) (z Int)) Int (+ (+ y x) z))

(synth-fun f1 ((x Int)) Int
	   (
	   (Start Int (
	   	      (let0 Intx CInt CInt)
	   	      )
 	   )
 	   (Intx Int (x))
	   (CInt Int (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15))

	   )
)

(synth-fun f2 ((x Int)) Int
	   (
	   (Start Int (x
	   	      (let0 Intx Start CInt)
	   	      )
 	   )
     (Intx Int (x))
	   (CInt Int (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15))

	   )
)


(declare-var x Int)

(constraint (= (+ (f1 x)(f2 x)) (+ (+ x x) (+ x 8))))
(constraint (= (- (f2 x)(f1 x)) (+ x 2)))

(check-synth)

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