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Proof step 5 from proof isarray-del (previous step)

⊦ r = r0, r0 ≠ jvmref ∧ r0 -- _type ∈ st -- r ∧ is_typevalue((st -- r)[r0 -- _type]) ∧ is_arraytype((st -- r)[r0 -- _type] .type) ∧ okarray(r0, (st -- r)[r0 -- _type] .type .type, st -- r) ↔ is_array(r0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ r ≠ r0 → (okarray(r0, ty, st -- r) ↔ okarray(r0, ty, st))
Proof step 4:
⊦ r = r0, r0 ≠ jvmref ∧ r0 -- _type ∈ st ∧ is_typevalue(st[r0 -- _type]) ∧ is_arraytype(st[r0 -- _type] .type) ∧ okarray(r0, st[r0 -- _type] .type .type, st) ↔ is_array(r0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r ≠ r0 → (st -- r)[r0 -- sk0] = st[r0 -- sk0]], [CSIMPSEQ : ⊦ r -- sk ∈ st -- r0 ↔ r ≠ r0 ∧ r -- sk ∈ st])]]