  Split rank of a rational polyhedron is finite. The well known proof of this
is based on the fact that split closure is stronger than the Chv\'{a}tal
closure, and the Chv\'{a}tal rank of a rational polyhedron is finite due to the
result of Chv\'{a}tal and Schrijver. In this note we provide an independent
proof for the fact that every rational polyhedron has finite split rank. In
principal, we construct a nonnegative potential function which decreases by at
least one with "every" second split closure unless the integer hull of the
polyhedron is reached.
