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Proof step 2 from proof validfield-put-statfield-01 (previous step)

r ≠ jvmref ∨ sk ≠ sk0 ⊦ validfield(str, r, sk0, st[jvmref -- sk, val]) ↔ validfield(str, r, sk0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ r ≠ jvmref ∨ sk ≠ sk0 → (validfield(str, r, sk0, st[jvmref -- sk, val]) ↔ validfield(str, r, sk0, st))

Rule argument

[crewrite-arg: validfield-put-statfield , F , [val, sk, st, sk0, r, str] → [val, sk, st, sk0, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (val, sk, st, sk0, r, str)]]