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Proof step 14 from proof validrefkeynotnull-statfield-intersect (previous step)

st .refs ∩ st1 .refs = ∅, validrefkeynotnull(str, jvmref -- fs ', ty, st), jvmref ∈ st1 ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ validrefkeynotnull(str, rk, ty, st) ↔ rk ∈ st ∧ validrefvalnotnull(str, st[rk], ty, st)
Proof step 13:
st .refs ∩ st1 .refs = ∅, jvmref -- fs ' ∈ st ∧ validrefvalnotnull(str, st[jvmref -- fs '], ty, st), jvmref ∈ st1 ⊦

Rule argument

[crewrite-arg: validrefkeynotnull-def , F , [st, ty, rk, str] → [st, ty, jvmref -- fs ', str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty, jvmref -- fs ', str)]]