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Proof step 3 from proof validref-mode (conclusion)

⊦ validref(str, r, ty, st[_mode, val]) ↔ validref(str, r, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ rk1 .ref = jvmref ∧ r ≠ jvmref → (validref(str, r, ty1, st[rk1, val]) ↔ validref(str, r, ty1, st))
Proof step 2:
⊦ validref(str, jvmref, ty, st)

Rule argument

[crewrite-arg: validref-put-statfield , F , [val, rk1, st, ty1, r, str] → [val, _mode, st, ty, r, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ _mode .ref = jvmref])], [EXTRATERMS : (val, _mode, st, ty, r, str)]]