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Proof step 23 from proof validref-primarray (previous step)

refs = r + refs0, junkrefs(str, refs, st[r -- _type] .type, st), okarray(r, ty, st), is_primtype(ty), r ∈ st ⊦ r = jvmref, refs = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 22:
okarray(r, ty, st), is_primtype(ty), junkrefs(str, r ' + refs0, st[r -- _type] .type, st), r ∈ st ⊦ r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ okarray(r, ty, st) → r ≠ jvmref ∧ r ∈ st], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]