; EXPECT: unsat
; COMMAND-LINE: --lang=sygus2 --sygus-inv-templ=post --sygus-out=status
(set-logic LIA)

(synth-inv inv-f ((x Int) (y Int)))

(define-fun pre-f ((x Int) (y Int)) Bool
(and (and (>= x 0)
(and (<= x 2)
(<= y 2))) (>= y 0)))

(define-fun trans-f ((x Int) (y Int) (x! Int) (y! Int)) Bool
(and (= x! (+ x 2)) (= y! (+ y 2))))

(define-fun post-f ((x Int) (y Int)) Bool
(not (and (= x 4) (= y 0))))

(inv-constraint inv-f pre-f trans-f post-f)

(check-synth)