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Proof step 24 from proof okarray-copy (previous step)

r1 -- _length ∈ st, is_integervalue(st[r1 -- _length]), is_arrayref(r1, st[r1 -- _length] .intval, st), r1 ∈ st, 0 ≤ st[r1 -- _length] .intval ⊦ r1 = r0, r1 -- _type ∈ st ∧ is_typevalue(st[r1 -- _type]) ∧ is_arraytype(st[r1 -- _type] .type) ∧ st[r1 -- _type] .type .type ≤ ty ∧ (∀ j0. ¬ j0 < 0 ∧ ¬ st[r1 -- _length] .intval ≤ j0 → okval(st[r1 -- j0 '], ty)) ↔ is_referencevalue(refval(r1)) ∧ ( refval(r1) .refval ≠ jvmref → refval(r1) .refval -- _type ∈ st ∧ is_typevalue(st[refval(r1) .refval -- _type]) ∧ st[refval(r1) .refval -- _type] .type ≤ mkarraytype(ty)) ∧ (∀ j. 0 ≤ j ∧ j < st[r1 -- _length] .intval → okval(st[r1 -- j '], ty)), r1 = jvmref

User applied rule case distinction

And obtained the following new goals

Rule argument

[CASEDARG : pos: right 2, ()]

Additional information

[[CONCRETESIMPRULES : ()]]