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Proof step 67 from proof okarray-union-03 (previous step)

r -- _length ∈ st, okarray(refval(r), ty, st[r -- _length] .intval, st) ⊦ r = jvmref, (0 ≤ j ∧ j < st[r -- _length] .intval → oktype((st0 ∪ st)[r -- j '], ty, st0 ∪ st)) ∧ is_arrayref(r, st[r -- _length] .intval, st0 ∪ st) ∧ ¬ st[r -- _length] .intval < 0 ∧ st[r -- _length] = intval(st[r -- _length] .intval) ∧ (r -- _length ∈ st0 ∨ r -- _length ∈ st) ∧ okreftype(refval(r), mkarraytype(ty), st0 ∪ st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st])]]