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Proof step 197 from proof exvalidrefs-maxlength (
previous step
)
⊦ junkrefs(str, (r0 ' + refs) + r ', ty, st -- r) ∧ ¬ junkref(str, r0, st) ∧ r ≠ r0 ∧ ¬ r ∈ refs ∧ st[r0 -- _type] .type ≤ ty → validrefs(str, r0 ' + refs + r ', ty, st)
Lemma
validrefs-del-junkrefs