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Proof step 30 from proof fits-put-05-stronger (previous step)

_length = fs ', st[r1 -- i '] = refval(r0), 0 ≤ i, is_array(str, r1, st), is_bytevalue(st[r1 -- _length]), fits(r0, sks0, st[r1 -- _length, byteval(by)]), is_arraytype(st[r1 -- _type] .type), i < byteval(by) .intval, 0 < byteval(by) .intval, junkref(str, r0, st) ∨ fits(r0, sks0, st) ⊦ r1 = jvmref, junkref(str, r1, st), ¬ st[r1 -- _length] .intval ≤ i ∧ fits(r0, sks0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 25:
⊦ is_bytevalue(val) ↔ (∃ by. val = byteval(by))
Proof step 29:
_length = fs ', st[r1 -- i '] = refval(r0), 0 ≤ i, is_array(str, r1, st), ∃ by. st[r1 -- _length] = byteval(by), fits(r0, sks0, st[r1 -- _length, byteval(by)]), is_arraytype(st[r1 -- _type] .type), i < byteval(by) .intval, 0 < byteval(by) .intval, junkref(str, r0, st) ∨ fits(r0, sks0, st) ⊦ r1 = jvmref, junkref(str, r1, st), ¬ st[r1 -- _length] .intval ≤ i ∧ fits(r0, sks0, st)

Rule argument

[speclemmaarg: ,is_bytevalue(val) ↔ (∃ by. val = byteval(by)) ,[val] → [st[r1 -- _length]] ,F ,javavalue , ,ex-08 ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r1 -- _length])]]