MAYBE

Proof:
ConCon could not decide confluence of the system.
\cite{ALS94}, Theorem 4.1 does not apply.
ConCon could not decide whether all critical pairs are joinable or not.
pair(0, x) = pair(s(y), $1) <= leq(x, $2) = true, div(m($2, x), x) = pair(y, $1), greater(x, $2) = true:
For all conditions c 'tcap(c.lhs)' is unifiable with c.rhs.