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Proof step 25 from proof getarray-in (conclusion)

⊦ val ∈ getarray(r, st) ↔ (∃ i. 0 ≤ i ∧ i < st[r -- _length] .intval ∧ st[r -- i '] = val)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 24:
⊦ val ∈ getarray(r, st) ↔ (∃ i. ¬ i < 0 ∧ ¬ st[r -- _length] .intval ≤ i ∧ st[r -- i '] = val)

Rule argument

[emptyarg]

Additional information

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