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Proof step 29 from proof validrefs-newref (previous step)

newref(r, st), validrefs(str, r0 ' + acc, ty, st), ∀ str, ty, st, r. validrefs(str, acc, ty, st) ∧ r ∈ acc ∧ newref(r, st) → r = jvmref ⊦ r = jvmref, r ≠ r0 ∧ ¬ r ∈ acc

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ r = jvmref → (validrefs(str, r ' + refs, ty, st) ↔ refs = [])
Proof step 27:
r0 ≠ jvmref, newref(r, st), validrefs(str, r0 ' + acc, ty, st), ∀ str, ty, st, r. validrefs(str, acc, ty, st) ∧ r ∈ acc ∧ newref(r, st) → r = jvmref ⊦ r = jvmref, r ≠ r0 ∧ ¬ r ∈ acc
Proof step 28:
⊦ validrefs(str, [], ty, st)

Rule argument

[crewrite-arg: validrefs-null , F , [st, ty, refs, r, str] → [st, ty, acc, r0, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ r ∈ []])], [EXTRATERMS : (st, ty, acc, r0, str)]]