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Proof step 9 from proof ac-okarray-01 (previous step)

val = refval(r) ∧ is_referencevalue(val), st[r -- _length] = intval(i), okreftype(val, mkarraytype(ty), st), is_arrayref(r, i, st), j < i, r -- _length ∈ st, 0 ≤ i, 0 ≤ j, 0 < i, r ∈ st, ∀ j. ¬ j < 0 ∧ ¬ i ≤ j → oktype(st[r -- j '], ty, st) ⊦ val = refval(jvmref), r = jvmref, oktype(st[r -- j '], ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
st[r -- _length] = intval(i), okreftype(refval(r), mkarraytype(ty), st), is_arrayref(r, i, st), j < i, r -- _length ∈ st, 0 ≤ i, 0 ≤ j, 0 < i, r ∈ st, ∀ j. ¬ j < 0 ∧ ¬ i ≤ j → oktype(st[r -- j '], ty, st) ⊦ r = jvmref, oktype(st[r -- j '], ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st], [CSIMPSEQ : ⊦ is_referencevalue(refval(r))], [CSIMPSEQ : ⊦ refval(r) = refval(r0) ↔ r = r0])]]