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Proof step 4 from proof getbar-update (previous step)

∀ r, r0, st. r = r0 ∨ getbytearray(r, update(r0, fis0, st)) = getbytearray(r, st) ⊦ r = r0, getbytearray(r, update(r0, fv + fis0, st)) = getbytearray(r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ update(r, fv ' + fis, st) = (update(r, fis, st)[r -- fv .1, fv .2])
Proof step 3:
∀ r, r0, st. r = r0 ∨ getbytearray(r, update(r0, fis0, st)) = getbytearray(r, st) ⊦ r = r0, getbytearray(r, update(r0, fis0, st)) = getbytearray(r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r1 ≠ r → getbytearray (r1, st[r -- sk, val]) = getbytearray(r1, st)], [CSIMPSEQ : ⊦ (fis + fis0) + fis1 = fis + fis0 + fis1], [CSIMPSEQ : ⊦ fv + fis = fv ' + fis])]]