| ¬ sk ∈ fis ⊦ r = r0, (addobj(r, class, fis, addobj(r0, class0, fis0, st))[r -- sk]) = (addobj(r, class, fis, st)[r -- sk]) |
⊦ (addobj(r, class, fis, addobj(r0, class0, fis0, st))[r -- sk]) = (addobj(r, class, fis, st)[r -- sk]), r = r0, sk ∈ fis
[[CONCRETESIMPRULES : ()]]