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Proof step 6 from proof validsubset-put-statfield (previous step)

r ∈ st0, junkref(str, r, st0), ∀ r. ¬ r ∈ st ∧ (r = jvmref ∨ r ∈ st0) → ¬ junkref(str, r, st0[jvmref -- sk, val]), ∀ r, ty. validref(str, r, ty, st) → validref(str, r, ty, st0) ⊦ r ∈ st, junkref(str, r, st0[jvmref -- sk, val])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ rk1 .ref = jvmref ∧ r ≠ jvmref → (junkref(str, r, st[rk1, val]) ↔ junkref(str, r, st))
Proof step 5:
⊦ ¬ junkref(str, jvmref, st)

Rule argument

[crewrite-arg: junkref-put-statfield , F , [val, rk1, st, r, str] → [val, jvmref -- sk, st0, r, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (r -- sk) .ref = r])], [EXTRATERMS : (val, jvmref -- sk, st0, r, str)]]