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Proof step 9 from proof validrefvalnotnull-put-statfield (previous step)

validrefvalnotnull(str, val1, ty1, st) ⊦ rk = jvmref -- sk, is_referencevalue(val1) ∧ validrefnotnull(str, val1 .refval, ty1, st[jvmref -- sk, val])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ validrefvalnotnull(str, val, ty, st) ↔ is_referencevalue(val) ∧ validrefnotnull(str, val .refval, ty, st)
Proof step 8:
is_referencevalue(val1) ∧ validrefnotnull(str, val1 .refval, ty1, st) ⊦ rk = jvmref -- sk, is_referencevalue(val1) ∧ validrefnotnull(str, val1 .refval, ty1, st[jvmref -- sk, val])

Rule argument

[crewrite-arg: validrefvalnotnull-def , F , [st, ty, val, str] → [st, ty1, val1, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty1, val1, str)]]