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Proof step 12 from proof junkref-put-refval (previous step)

is_reftype(ty0), ty ≤ ty0, junkrefs(str, r ' + refs0, st[r -- _type] .type, st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)]), r1 = jvmref ∨ st[r1 -- _type] .type ≤ ty ∧ ¬ junkref(str, r1, st) ⊦ ty0 = void_type, junkref(str, r, st), mkfs(class, ty0, fieldvar) ' ≠ _length ∧ r1 ≠ jvmref ∧ st[r1 -- _type] .type ≤ ty0 ∧ ¬ junkref(str, r1, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ r = jvmref → ¬ junkrefs(str, r ' + refs, ty, st)
Proof step 11:
r ≠ jvmref, is_reftype(ty0), ty ≤ ty0, junkrefs(str, r ' + refs0, st[r -- _type] .type, st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)]), r1 = jvmref ∨ st[r1 -- _type] .type ≤ ty ∧ ¬ junkref(str, r1, st) ⊦ ty0 = void_type, junkref(str, r, st), mkfs(class, ty0, fieldvar) ' ≠ _length ∧ r1 ≠ jvmref ∧ st[r1 -- _type] .type ≤ ty0 ∧ ¬ junkref(str, r1, st)

Rule argument

[crewrite-arg: junkrefs-null , F , [st, ty, refs, r, str] → [st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)], st[r -- _type] .type, refs0, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)], st[r -- _type] .type, refs0, r, str)]]