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Proof step 31 from proof getintarray-in (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 30:
⊦ (∃ n. n < # getarray(r, 0, st[r -- _length] .intval, st) ∧ (intvalues(getarray(r, 0, st[r -- _length] .intval, st))[n]) = i) ↔ (∃ j. i = st[r -- j '] .intval ∧ ¬ j < 0 ∧ ¬ st[r -- _length] .intval ≤ j)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ # intvalues(vals) = # vals])]]