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Proof step 62 from proof validrefs-putbyte-01 (previous step)

okbytearray(r, st), validrefs(str, refs, ty, st[r -- i ', byteval(by)]) ⊦ validrefs(str, refs, ty, st)

User applied rule induction

And obtained the following new goals

Proof step 61:
okbytearray(r, st) ∧ validrefs(str, refs, ty, st[r -- i ', byteval(by)]), ∀ by, i, ty, str, st, r, refs0. # refs0 < # refs → (okbytearray(r, st) ∧ validrefs(str, refs0, ty, st[r -- i ', byteval(by)]) → validrefs(str, refs0, ty, st)) ⊦ validrefs(str, refs, ty, st)

Rule argument

[INDHYPARG : [STANDARDINDUCTIONTYPE : ], true, false, # refs, [] → [], <]

Additional information

[[CONCRETESIMPRULES : ([CSIMPLESSPRED : <])], [EXTRATERMS : (# refs)]]