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Proof step 4 from proof pathex-putshortfield (
previous step
)
⊦ is_shortvalue(st[r -- mkfs(class, short_type, fieldvar) ']) ∧ refs0 ≠ [] ∧ validrefs(str, refs0, ty, st[r -- mkfs(class, short_type, fieldvar) ', shortval(sho)]) ∧ ¬ junkref(str, refs0 .first, st) → validrefs(str, refs0, ty, st)
Lemma
validrefs-putshort-field