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Proof step 11 from proof extension-01 (conclusion)

⊦ getbytearray(r, st) = getbytearray(r0, st0) ↔ st[r -- _length] .intval ≤ 0 ∧ st0[r0 -- _length] .intval ≤ 0 ∨ 0 ≤ st[r -- _length] .intval ∧ st[r -- _length] .intval = st0[r0 -- _length] .intval ∧ (∀ j1. 0 ≤ j1 ∧ j1 < st[r -- _length] .intval → st[r -- j1 '] .byteval = st0[r0 -- j1 '] .byteval)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
⊦ getbytearray(r, st) = getbytearray(r0, st0) ↔ ¬ st[r -- _length] .intval < 0 ∧ st[r -- _length] .intval = st0[r0 -- _length] .intval ∧ (∀ j1. 0 ≤ j1 ∧ j1 < st[r -- _length] .intval → st[r -- j1 '] .byteval = st0[r0 -- j1 '] .byteval) ∨ ¬ 0 < st[r -- _length] .intval ∧ ¬ 0 < st0[r0 -- _length] .intval

Rule argument

[emptyarg]

Additional information

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