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Proof step 2 from proof getarray-union-02 (previous step)

r -- _length ∈ st, j ≤ st[r -- _length] .intval, r ∈ st, 0 < j, 0 < st[r -- _length] .intval, i < j, 0 ≤ i, i < st[r -- _length] .intval, ∀ i. ¬ i < 0 ∧ ¬ j ≤ i → r -- i ' ∈ st ⊦ getarray(r, 0, j, st0 ∪ st) = getarray(r, 0, j, st), r -- i ' ∈ st

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 9, [QUANTTERMLIST : (i)]]

Additional information

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