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Proof step 11 from proof fits-put-03 (previous step)

sks0 ≠ [], is_bytevalue(st[r1 -- fs ']), fits(r1, fs ' ' + sks0, st), ∀ st, r1, fs, r, by, str. is_bytevalue(st[r1 -- fs ']) ∧ fits(r, sks0, st) → (st[r1 -- fs ', byteval(by)][r -- sks0]) = st[r -- sks0] ∨ junkref(str, r, st) ⊦ sks0 = [], (st[r1 -- fs ', byteval(by)][byteval(by) .refval -- sks0]) = st[st[r1 -- fs '] .refval -- sks0], junkref(str, r1, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
fits(r1, fs ' ' + sks0, st), is_bytevalue(st[r1 -- fs ']), ∀ st, r1, fs, r, by, str. is_bytevalue(st[r1 -- fs ']) ∧ fits(r, sks0, st) → (st[r1 -- fs ', byteval(by)][r -- sks0]) = st[r -- sks0] ∨ junkref(str, r, st) ⊦ sks0 = [], (st[r1 -- fs ', byteval(by)][byteval(by) .refval -- sks0]) = st[st[r1 -- fs '] .refval -- sks0], junkref(str, r1, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]