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Proof step 17 from proof isvalidref-put-array-badindex (previous step)

i < 0 ⊦ (is_obj(r0, st) ∨ is_array(r0, st[r0 -- i ', val])) ∧ ( class+∃(str, st[r0 -- _type] .type .class) ∧ ¬ is_abstract(st[r0 -- _type] .type .class) ∧ is_obj(r0, st) ∨ is_array(str, r0, st[r0 -- i ', val])) ↔ class+∃(str, st[r0 -- _type] .type .class) ∧ ¬ is_abstract(st[r0 -- _type] .type .class) ∧ is_obj(r0, st) ∨ type∃(str, st[r0 -- _type] .type) ∧ st[r0 -- _type] .type .jtelemtype ≠ void_type ∧ st[r0 -- _type] .type .jtelemtype ≠ abstract_type ∧ is_array(r0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[x0lemmaarg: spec-name: okfuns instance-name: lemma-name: is-real-array-def antecedent: succedent: is_array(str, r, st) ↔ type∃(str, st[r -- _type] .type) ∧ st[r -- _type] .type .jtelemtype ≠ void_type ∧ st[r -- _type] .type .jtelemtype ≠ abstract_type ∧ is_array(r, st) substlist: [st, r, str] → [st[r0 -- i ', val], r0, str] add preconditions?: F is rewrite lemma?: T current spec?: F rotate lemma?: F replace all?: T paths: ((1, 0, 0, 1, 0, 1, 1, 1, 1)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r0 -- i ', val], r0, str)]]