<goalname="WP_parameter slow_subtraction"expl="correctness of parameter slow_subtraction"sum="458f2e6c9d1bbc6a9d6cdddba40fd1d5"proved="true"expanded="true">
<goalname="WP_parameter reduce_to_zero"expl="correctness of parameter reduce_to_zero"sum="45e7a1303fcca8e459e15eca9d92bccd"proved="true"expanded="true">