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Proof step 28 from proof fits-put-05-stronger (previous step)

_length = fs ', st[r1 -- i '] = refval(r0), st[r1 -- _length] = byteval(by0), 0 ≤ i, is_array(str, r1, st), 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), ¬ byteval(by0) .intval ≤ i ∧ fits(r0, sks0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 26:
⊦ ¬ is_integervalue(st[r -- _length]) → ¬ is_array(str, r, st)
Proof step 27:
¬ ¬ is_integervalue(st[r1 -- _length]), _length = fs ', st[r1 -- i '] = refval(r0), st[r1 -- _length] = byteval(by0), 0 ≤ i, is_array(str, r1, st), 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), ¬ byteval(by0) .intval ≤ i ∧ fits(r0, sks0, st)

Rule argument

[speclemmaarg: ,¬ is_integervalue(st[r -- _length]) → ¬ is_array(str, r, st) ,[st, r, str] → [st, r1, str] ,F ,okfuns , ,is_array-badlength ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r1, str)]]