| junkrefs(str, refs, ty, st -- r) ⊦ r ∈ refs, junkrefs(str, refs, ty, st) |
⊦ ¬ junkrefs(str, [], ty, st)
∀ str, ty, st, r. junkrefs(str, acc, ty, st -- r) → r ∈ acc ∨ junkrefs(str, acc, ty, st), junkrefs(str, r0 + acc, ty, st -- r) ⊦ r ∈ r0 + acc, junkrefs(str, r0 + acc, ty, st)
[[CONCRETESIMPRULES : ([CSIMPGEN : references generated by [], +;])]]