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Proof step 17 from proof getintarray-in (previous step)

0 < st[r -- _length] .intval, n < i→n(st[r -- _length] .intval) ⊦ st[r -- _length] .intval = 0, ∃ j. (intvalues(getarray(r, 0, st[r -- _length] .intval, st))[n]) = st[r -- j '] .intval ∧ ¬ j < 0 ∧ ¬ st[r -- _length] .intval ≤ j

User applied rule exists right

And obtained the following new goals

Rule argument

[EXRARG : pos: right 2, [extquanttermlist: (n→i(n))abort:F, discard:T, computed:F]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (n→i(n))]]