== test ==
fun test() {
    throw Exception()
    test()
}
---------------------
L0:
    <START>                      NEXT:[r(Exception)]                 PREV:[]
    r(Exception)                 NEXT:[r(Exception())]               PREV:[<START>]
    r(Exception())               NEXT:[throw (throw Exception())]    PREV:[r(Exception)]
    throw (throw Exception())    NEXT:[<ERROR>]                      PREV:[r(Exception())]
-   r(test)                      NEXT:[r(test())]                    PREV:[]
-   r(test())                    NEXT:[<END>]                        PREV:[]
L1:
    <END>                        NEXT:[<SINK>]                       PREV:[]
error:
    <ERROR>                      NEXT:[<SINK>]                       PREV:[throw (throw Exception())]
sink:
    <SINK>                       NEXT:[]                             PREV:[<ERROR>, <END>]
=====================