WORST_CASE(Omega(0),?) Initial ITS Start location: l3 0: l0 -> l1 : y^0'=y^post0, x^0'=x^post0, (x^0 <= 0 /\ 1-y^0 <= 0 /\ -y^post0+y^0 == 0 /\ -x^0 <= 0 /\ -y^0+x^post0 == 0), cost: 1 2: l0 -> l2 : y^0'=y^post2, x^0'=x^post2, (-y^0+x^post2 == 0 /\ 1+y^0 <= 0 /\ x^0 <= 0 /\ -x^0 <= 0 /\ y^0-y^post2 == 0), cost: 1 1: l1 -> l0 : y^0'=y^post1, x^0'=x^post1, (x^0-x^post1 == 0 /\ y^0-y^post1 == 0), cost: 1 3: l2 -> l0 : y^0'=y^post3, x^0'=x^post3, (y^0-y^post3 == 0 /\ -x^post3+x^0 == 0), cost: 1 4: l3 -> l0 : y^0'=y^post4, x^0'=x^post4, (y^0-y^post4 == 0 /\ x^0-x^post4 == 0), cost: 1 Applied preprocessing Original rule: l0 -> l1 : y^0'=y^post0, x^0'=x^post0, (x^0 <= 0 /\ 1-y^0 <= 0 /\ -y^post0+y^0 == 0 /\ -x^0 <= 0 /\ -y^0+x^post0 == 0), cost: 1 New rule: l0 -> l1 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 1 Applied preprocessing Original rule: l1 -> l0 : y^0'=y^post1, x^0'=x^post1, (x^0-x^post1 == 0 /\ y^0-y^post1 == 0), cost: 1 New rule: l1 -> l0 : TRUE, cost: 1 Applied preprocessing Original rule: l0 -> l2 : y^0'=y^post2, x^0'=x^post2, (-y^0+x^post2 == 0 /\ 1+y^0 <= 0 /\ x^0 <= 0 /\ -x^0 <= 0 /\ y^0-y^post2 == 0), cost: 1 New rule: l0 -> l2 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 1 Applied preprocessing Original rule: l2 -> l0 : y^0'=y^post3, x^0'=x^post3, (y^0-y^post3 == 0 /\ -x^post3+x^0 == 0), cost: 1 New rule: l2 -> l0 : TRUE, cost: 1 Applied preprocessing Original rule: l3 -> l0 : y^0'=y^post4, x^0'=x^post4, (y^0-y^post4 == 0 /\ x^0-x^post4 == 0), cost: 1 New rule: l3 -> l0 : TRUE, cost: 1 Simplified rules Start location: l3 5: l0 -> l1 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 1 7: l0 -> l2 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 1 6: l1 -> l0 : TRUE, cost: 1 8: l2 -> l0 : TRUE, cost: 1 9: l3 -> l0 : TRUE, cost: 1 Eliminating location l1 by chaining: Applied chaining First rule: l0 -> l1 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 1 Second rule: l1 -> l0 : TRUE, cost: 1 New rule: l0 -> l0 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 2 Applied deletion Removed the following rules: 5 6 Eliminating location l2 by chaining: Applied chaining First rule: l0 -> l2 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 1 Second rule: l2 -> l0 : TRUE, cost: 1 New rule: l0 -> l0 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 2 Applied deletion Removed the following rules: 7 8 Eliminated locations on linear paths Start location: l3 10: l0 -> l0 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 2 11: l0 -> l0 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 2 9: l3 -> l0 : TRUE, cost: 1 Accelerated simple loops Start location: l3 10: l0 -> l0 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 2 11: l0 -> l0 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 2 9: l3 -> l0 : TRUE, cost: 1 Applied chaining First rule: l3 -> l0 : TRUE, cost: 1 Second rule: l0 -> l0 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 2 New rule: l3 -> l0 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 3 Applied chaining First rule: l3 -> l0 : TRUE, cost: 1 Second rule: l0 -> l0 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 2 New rule: l3 -> l0 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 3 Applied deletion Removed the following rules: 10 11 Chained accelerated rules with incoming rules Start location: l3 9: l3 -> l0 : TRUE, cost: 1 12: l3 -> l0 : x^0'=y^0, (x^0 == 0 /\ -1+y^0 >= 0), cost: 3 13: l3 -> l0 : x^0'=y^0, (1+y^0 <= 0 /\ x^0 == 0), cost: 3 Removed unreachable locations and irrelevant leafs Start location: l3 Computing asymptotic complexity Proved the following lower bound Complexity: Unknown Cpx degree: ? Solved cost: 0 Rule cost: 0