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Proof step 77 from proof fits-put-05 (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 76:
fits(r, sk ' + sks0, st[r1 -- fs ', byteval(by)]), is_bytevalue(st[r1 -- fs ']), is_referencevalue(st[r -- (sk ' + sks0)]), ∀ r, st, r1, fs, by, str. fits(r, sks0, st[r1 -- fs ', byteval(by)]) ∧ is_bytevalue(st[r1 -- fs ']) ∧ is_referencevalue(st[r -- sks0]) → junkref(str, r, st) ∨ fits(r, sks0, st) ⊦ junkref(str, r, st), fits(r, sk ' + sks0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ sk + sks = sk ' + sks])]]