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Proof step 9 from proof unchanged-array-forward (previous step)

st[r -- i '] = refval(r0), unchanged(str, r, st, st1), i < st[r -- _length] .intval, is_array(str, r, st), is_referencevalue(st[r -- i ']), 0 ≤ i, 0 < st[r -- _length] .intval, r0 ≠ jvmref → st[r0 -- _type] .type ≤ st[r -- _type] .type .type ∧ is_valid_ref(str, r0, st) ⊦ r = jvmref, unchanged(str, r0, st, st1)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ unchanged(str, jvmref, st, st0)
Proof step 8:
st[r -- i '] = refval(r0), is_valid_ref(str, r0, st), st[r0 -- _type] .type ≤ st[r -- _type] .type .type, 0 < st[r -- _length] .intval, 0 ≤ i, is_array(str, r, st), i < st[r -- _length] .intval, unchanged(str, r, st, st1) ⊦ r0 = jvmref, r = jvmref, unchanged(str, r0, st, st1)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_referencevalue(refval(r))])]]