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Proof step 30 from proof ex-fits-validrefs-stronger (previous step)

st[r -- sk] = refval(r0), junkref(str, r0, st), fits(r0, sks0, st), is_obj(str, r, st) ∨ is_array(str, r, st), is_classtype(st[r -- _type] .type) → sk ∈ instfields(st[r -- _type] .type .class), is_arraytype(st[r -- _type] .type) → is_indexkey(sk) ∧ 0 ≤ sk .index ∧ sk .index < st[r -- _length] .intval ⊦ r = jvmref, junkref(str, r, st), validrefs(str, r ' + r0 ' + refs, st[r -- _type] .type, st) ∧ # refs = # sks0 ∧ (sks ⊑ sk ' + sks0 ∧ sks ≠ [] → st[r -- sks] .refval = (r ' + r0 ' + refs)[# sks])

User applied rule case distinction

And obtained the following new goals

Rule argument

[CASEDARG : pos: left 4, ()]

Additional information

[[CONCRETESIMPRULES : ()]]