== foo ==
fun foo() {
    var a = 1
    use(a)
    a = 2
    use(a)
}
---------------------
1                                   <v0>: Int   NEW: r(1) -> <v0>                  
a                                   <v1>: Int   NEW: r(a) -> <v1>                  
use(a)                              <v2>: *     NEW: call(use(a), use|<v1>) -> <v2>
2                                   <v3>: Int   NEW: r(2) -> <v3>                  
a                                   <v4>: Int   NEW: r(a) -> <v4>                  
use(a)                              <v5>: *     NEW: call(use(a), use|<v4>) -> <v5>
{ var a = 1 use(a) a = 2 use(a) }   <v5>: *     COPY                               
=====================
== bar ==
fun bar() {
    val b: Int
    b = 3
}
---------------------
3                      <v0>: Int   NEW: r(3) -> <v0>
b = 3                  !<v1>: *                     
{ val b: Int b = 3 }   !<v1>: *    COPY             
=====================
== use ==
fun use(a: Int) = a
---------------------
    <v0>: Int   NEW: magic[FAKE_INITIALIZER](a: Int) -> <v0>
a   <v1>: Int   NEW: r(a) -> <v1>                           
=====================