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Proof step 5 from proof validref-array-len-in (previous step)

is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty ⊦ r = jvmref, r -- _length ∈ st, junkref(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ r ≠ jvmref ∧ ¬ is_valid_ref(str, r, st) → junkref(str, r, st)
Proof step 4:
¬ (r ≠ jvmref ∧ ¬ is_valid_ref(str, r, st)), is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty ⊦ r = jvmref, r -- _length ∈ st, junkref(str, r, st)

Rule argument

[crewrite-arg: junkref-is-junk, F, [st, r, str] → [st, r, str]]

Additional information

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