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Proof step 22 from proof getintarray-in-02 (conclusion)

⊦ i ∈ getintarray(r, i0, j, st) ↔ (∃ j0. i = st[r -- (i0 + j0) '] .intval ∧ 0 ≤ j0 ∧ j0 < j)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 21:
⊦ i ∈ getintarray(r, i0, j, st) ↔ (∃ j0. i = st[r -- (i0 + j0) '] .intval ∧ ¬ j0 < 0 ∧ ¬ j ≤ j0)

Rule argument

[emptyarg]

Additional information

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