== foo ==
fun foo() {
  val a = Array<Int>
  3
  a[10] = 4
  2
  a[10]
  100
  a[10] += 1
}
---------------------
l0:
    <START>                  NEXT:[v(val a = Array<Int>)]    PREV:[]
    v(val a = Array<Int>)    NEXT:[r(Array)]                 PREV:[<START>]
    r(Array)                 NEXT:[r(Array<Int>)]            PREV:[v(val a = Array<Int>)]
    r(Array<Int>)            NEXT:[w(a)]                     PREV:[r(Array)]
    w(a)                     NEXT:[r(3)]                     PREV:[r(Array<Int>)]
    r(3)                     NEXT:[r(4)]                     PREV:[w(a)]
    r(4)                     NEXT:[r(10)]                    PREV:[r(3)]
    r(10)                    NEXT:[r(a)]                     PREV:[r(4)]
    r(a)                     NEXT:[r(=)]                     PREV:[r(10)]
    r(=)                     NEXT:[w(a[10])]                 PREV:[r(a)]
    w(a[10])                 NEXT:[r(2)]                     PREV:[r(=)]
    r(2)                     NEXT:[r(10)]                    PREV:[w(a[10])]
    r(10)                    NEXT:[r(a)]                     PREV:[r(2)]
    r(a)                     NEXT:[r(a[10])]                 PREV:[r(10)]
    r(a[10])                 NEXT:[r(100)]                   PREV:[r(a)]
    r(100)                   NEXT:[r(10)]                    PREV:[r(a[10])]
    r(10)                    NEXT:[r(a)]                     PREV:[r(100)]
    r(a)                     NEXT:[r(a[10])]                 PREV:[r(10)]
    r(a[10])                 NEXT:[r(1)]                     PREV:[r(a)]
    r(1)                     NEXT:[r(+=)]                    PREV:[r(a[10])]
    r(+=)                    NEXT:[w(a[10])]                 PREV:[r(1)]
    w(a[10])                 NEXT:[<END>]                    PREV:[r(+=)]
l1:
    <END>                    NEXT:[<SINK>]                   PREV:[w(a[10])]
error:
    <ERROR>                  NEXT:[]                         PREV:[]
sink:
    <SINK>                   NEXT:[]                         PREV:[<END>]
=====================