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Proof step 28 from proof subset-okarray (previous step)

st[r -- _type] = typeval(mkarraytype(ty0)), st0[r -- _length] = intval(i), st0[r -- _type] = typeval(mkarraytype(ty0)), st[r -- _length] = intval(i), r -- _type ∈ st0, r ∈ st, ty0 ≤ ty, r -- _type ∈ st, is_arrayref(r, i, st), r -- _length ∈ st, 0 ≤ i, r -- _length ∈ st0, r ∈ st0, ∀ j0. ¬ j0 < 0 ∧ ¬ i ≤ j0 → okval(st[r -- j0 '], ty), ∀ rk. rk ∈ st → rk ∈ st0 ∧ st[rk] = st0[rk] ⊦ r = jvmref, is_arrayref(r, i, st0) ∧ (0 ≤ j ∧ j < i → okval(st0[r -- j '], ty))

User applied rule case distinction

And obtained the following new goals

Rule argument

[CASEDARG : pos: right 2, ()]

Additional information

[[CONCRETESIMPRULES : ()]]