| junkrefs(str, r ' + acc, ty, st), ∀ str, ty, st, sk, val. junkrefs(str, acc, ty, st) → junkrefs(str, acc, ty, st[jvmref -- sk, val]) ⊦ junkrefs(str, r ' + acc, ty, st[jvmref -- sk, val]) |
⊦ r = jvmref → ¬ junkrefs(str, r ' + refs, ty, st)
r ≠ jvmref, junkrefs(str, r ' + acc, ty, st), ∀ str, ty, st, sk, val. junkrefs(str, acc, ty, st) → junkrefs(str, acc, ty, st[jvmref -- sk, val]) ⊦ junkrefs(str, r ' + acc, ty, st[jvmref -- sk, val])
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty, acc, r, str)]]