Figure 2: (a) Thread output producing a mismatched coordinate pair; (b) matched coordinate pair from a synchronized execution.

(a)
(1878406,1878406)
(2110533,2110533)
(2439367,2439367)
(2790112,2790112)
x: 3137912
y: 3137911	  // y is different from x
(3137912,3137911) // y is different from x
(3466456,3466456)
(3798720,3798720)
(5571903,5571902) // y is different from x
(5785646,5785646)
(5785646,5785646)

(b)
(333731,333731)
(397574,397574)
(509857,509857)
(967553,967553)
x: 853896
y: 967553 // y is still different from x
(1619521,1619521)
(1720752,1720752)
(1833313,1833313)
(2973291,2973291)
(3083198,3083198)
(3640996,3640996)