| ⊦ class = `java.lang.Object' .class, validmode(str, addclass(class, fis, st)) ↔ validmode(str, st) |
⊦ validmode(str, st) ↔ _mode ∈ st ∧ validmode(str, st[_mode], st)
⊦ class = `java.lang.Object' .class, _mode ∈ addclass(class, fis, st) ∧ validmode(str, addclass(class, fis, st)[_mode], addclass(class, fis, st)) ↔ validmode(str, st)
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (addclass(class, fis, st), str)]]