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Proof step 7 from proof okarray-01 (previous step)

st[r -- _length] = intval(i), 0 ≤ i, 0 < i, r ∈ st, 0 ≤ j, is_arrayref(r, i, st), r -- _length ∈ st, okreftype(refval(r), mkarraytype(int_type), st), j < i, ∀ j. ¬ j < 0 ∧ ¬ i ≤ j → is_integervalue(st[r -- j ']) ⊦ r = jvmref, r = r0, is_integervalue(st[r -- j '])

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 10, [QUANTTERMLIST : (j)]]

Additional information

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