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Proof step 13 from proof okarray-08 (previous step)

st[r0 -- _length] = intval(i), st[r0 -- _type] = typeval(mkarraytype(int_type)), j0 < i, r0 ∈ st, r0 -- _type ∈ st, is_integervalue(val), is_arrayref(r0, i, st), r0 -- _length ∈ st, 0 ≤ i, 0 ≤ j0, 0 < i, ∀ j1. ¬ j1 < 0 ∧ ¬ i ≤ j1 → is_integervalue(st[r0 -- j1 ']) ⊦ r0 = jvmref, j0 = j, is_integervalue(st[r0 -- j0 '])

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 12, [QUANTTERMLIST : (j0)]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i ≤ j → (¬ ¬ j < i ↔ false)], [CSIMPSEQ : ⊦ i < j → (¬ ¬ j ≤ i ↔ false)])], [EXTRATERMS : (j0)]]