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Proof step 16 from proof putarray-add-butlast (previous step)

n→i(# vals) = n→i(# vals) ∧ initial_value(ty) = initial_value(ty) ⊦ (addarray(r, vals, 0, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(n→i(# vals) + 1)])[r -- n→i(# vals) ', initial_value(ty)]) = (addarray(r, ty, vals, st)[r -- n→i(# vals) ', initial_value(ty)][r -- _length, intval(n→i(# vals) + 1)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 15:
⊦ (addarray(r, vals, 0, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(n→i(# vals) + 1)])[r -- n→i(# vals) ', initial_value(ty)]) = (addarray(r, ty, vals, st)[r -- n→i(# vals) ', initial_value(ty)][r -- _length, intval(n→i(# vals) + 1)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]