Added correctness check of test data + fixed huge amount of incorrect code in test data

idea/testData/slicer/inflow/openFun.kt

@@ -1,20 +1,21 @@
 // FLOW: IN
+// WITH_RUNTIME
 
 open class C {
-    var other: C? = null
+    private var other: C? = null
 
-    fun foo(p: Int) {
+    open fun foo(p: Int) {
         println(p + 1)
         other?.bar(p + 1)
     }
 
-    fun bar(p: Int) {
+    open fun bar(p: Int) {
         println(<caret>p + 2)
     }
 }
 
 class D : C() {
-    var other: D? = null
+    private var other: D? = null
 
     override fun foo(p: Int) {
         println(p + 3)