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Proof step 30 from proof validref-refs-last-valid-subset (previous step)

st[r0 -- _type] = typeval(ty1), st0[r0 -- _length] = intval(i0), ty1 = mkarraytype(ty), okarray(r0, ty, st), type∃(str, ty), r0 ∈ st, 0 ≤ i0, st ⊆ st0, validref(str, r0, mkarraytype(ty0), st), 0 ≤ i, i < i0, ty ≤ ty0, r0 -- _type ∈ st, is_typevalue(st[r0 -- _type]) ⊦ ty .jtelemtype = void_type, ty .jtelemtype = abstract_type, r0 = jvmref, noval .refval ∈ acc, r0 -- i ' ∈ st, ¬ r2 ∈ acc ∧ r2 ≠ r1, r1 ≠ r2 ∧ ¬ r1 ∈ refs

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 29:
st0[r0 -- _length] = intval(i0), st[r0 -- _type] = typeval(mkarraytype(ty)), r0 -- _type ∈ st, ty ≤ ty0, i < i0, 0 ≤ i, validref(str, r0, mkarraytype(ty0), st), st ⊆ st0, 0 ≤ i0, r0 ∈ st, type∃(str, ty), okarray(r0, ty, st) ⊦ r0 = jvmref, ty .jtelemtype = abstract_type, ty .jtelemtype = void_type, r0 -- i ' ∈ st, noval .refval ∈ acc, r1 ≠ r2 ∧ ¬ r1 ∈ refs, ¬ r2 ∈ acc ∧ r2 ≠ r1

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_typevalue(typeval(ty))])]]