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Proof step 6 from proof okbar-nopath (previous step)

0 ≤ i, 0 < st[r -- _length] .intval, is_array(str, r, st), okbytearray(r, st), i < st[r -- _length] .intval, is_referencevalue(st[r -- i ']), validrefs(str, st[r -- i '] .refval ' + refs, st[r -- _type] .type .type, st) ⊦ r = (st[r -- i '] .refval ' + refs) .last

Heuristic elimination applied rule insert elim lemma

And closed the goal!

Rule argument

[speclemmaarg: ,is_referencevalue(val) → (r = val .refval ↔ val = refval(r)) ,[val, r] → [st[r -- i '], r0] ,T ,javavalue , ,elim-13 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ 0 ≤ i ∧ i < st[r -- _length] .intval ∧ okbytearray(r, st) → st[r -- i '] ≠ refval(r1)], [CSIMPELIM : ⊦ is_referencevalue(val) → ( r = val .refval ↔ val = refval(r))])], [EXTRATERMS : (st[r -- i '], r0)]]