WORST_CASE(Omega(0),?) Initial ITS Start location: l2 0: l0 -> l1 : a^0'=a^post0, (1+a^post0 == 0 /\ -1+a^10 == 0), cost: 1 1: l2 -> l0 : a^0'=a^post1, a^0-a^post1 == 0, cost: 1 Removed unreachable rules and leafs Start location: l2 Computing asymptotic complexity Proved the following lower bound Complexity: Unknown Cpx degree: ? Solved cost: 0 Rule cost: 0