| ¬ (r ≠ jvmref ∧ (¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ ty)), junkrefs(str, r ' + acc, ty, st0 ∪ st), ∀ str, ty, st0, st. junkrefs(str, acc, ty, st0 ∪ st) → junkrefs(str, acc, ty, st) ⊦ r = jvmref, junkrefs(str, r ' + acc, ty, st) |
junkrefs(str, r ' + acc, ty, st0 ∪ st), is_valid_ref(str, r, st), st[r -- _type] .type ≤ ty, ∀ str, ty, st0, st. junkrefs(str, acc, ty, st0 ∪ st) → junkrefs(str, acc, ty, st) ⊦ r = jvmref, junkrefs(str, r ' + acc, ty, st)
[[CONCRETESIMPRULES : ()]]