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Proof step 8 from proof getbar-onlyModified (previous step)

onlyModified(str, r, st, st0), okbytearray(r1, st), okbytearray(r, st) ⊦ st[r1 -- _length] .intval = st0[r1 -- _length] .intval, r = r1, getbytearray(r1, 0, st[r1 -- _length] .intval, st) = getbytearray(r1, 0, st0[r1 -- _length] .intval, st0), junkref(str, r0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ onlyModified(str, r, st, st0) ↔ (∀ r0, sk. ¬ path∃(str, r, r0, st) → st[r0 -- sk] = st0[r0 -- sk])
Proof step 7:
∀ r0, sk. ¬ path∃(str, r, r0, st) → st[r0 -- sk] = st0[r0 -- sk], okbytearray(r1, st), okbytearray(r, st) ⊦ st[r1 -- _length] .intval = st0[r1 -- _length] .intval, r = r1, getbytearray(r1, 0, st[r1 -- _length] .intval, st) = getbytearray(r1, 0, st0[r1 -- _length] .intval, st0), junkref(str, r0, st)

Rule argument

[crewrite-arg: onlymodified-def , F , [st0, st, r, str] → [st0, st, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st0, st, r, str)]]