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Proof step 40 from proof okbytearray-put-byteval-equiv (conclusion)

⊦ i < 0 ∨ ¬ i < st[r -- _length] .intval ∨ 0 ≤ i ∧ i < st[r -- _length] .intval ∧ r -- i ' ∈ st ∧ is_bytevalue(st[r -- i ']) → (okbytearray(r, st[r -- i ', byteval(by)]) ↔ okbytearray(r, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ okbytearray(r, st) → (¬ okbytearray(r, st[r0 -- i ', byteval(by)]) ↔ false)
Proof step 39:
okbytearray(r, st[r -- i ', byteval(by)]), i < 0 ∨ st[r -- _length] .intval ≤ i ∨ 0 ≤ i ∧ i < st[r -- _length] .intval ∧ r -- i ' ∈ st ∧ is_bytevalue(st[r -- i ']) ⊦ okbytearray(r, st)

Rule argument

[emptyarg]

Additional information

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