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Proof step 14 from proof getarray-addarray-02 (previous step)

is_fskey(_length) ∨ r ≠ r, 0 ≤ i ⊦ getarray(r, 0, i, addarray(r, intval(0), i, st[r -- _type, typeval(mkarraytype(int_type))])[r -- _length, intval(i)]) = mklist(intval(0), i→n(i))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
0 ≤ i ⊦ getarray(r, 0, i, addarray(r, intval(0), i, st[r -- _type, typeval(mkarraytype(int_type))])[r -- _length, intval(i)]) = mklist(intval(0), i→n(i))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(_length)])]]