WORST_CASE(Omega(0),?) Initial ITS Start location: l4 0: l0 -> l1 : x^0'=x^post0, y^0'=y^post0, (y^0-y^post0 == 0 /\ -x^0-y^0 <= 0 /\ -1-x^0+x^post0 == 0 /\ 1+x^0-y^0 <= 0), cost: 1 1: l0 -> l1 : x^0'=x^post1, y^0'=y^post1, (1+x^0+y^0 <= 0 /\ -1+y^post1-y^0 == 0 /\ x^0-y^0 <= 0 /\ x^0-x^post1 == 0), cost: 1 2: l0 -> l1 : x^0'=x^post2, y^0'=y^post2, (1-x^0+y^0 <= 0 /\ -y^post2+y^0 == 0 /\ -1+x^0+y^0 <= 0 /\ 1-x^0+x^post2 == 0), cost: 1 3: l0 -> l1 : x^0'=x^post3, y^0'=y^post3, (2-x^0-y^0 <= 0 /\ x^0-x^post3 == 0 /\ 1-y^0+y^post3 == 0 /\ -x^0+y^0 <= 0), cost: 1 4: l1 -> l2 : x^0'=x^post4, y^0'=y^post4, (x^0-x^post4 == 0 /\ 1+x^0 <= 0 /\ -y^post4+y^0 == 0), cost: 1 5: l1 -> l2 : x^0'=x^post5, y^0'=y^post5, (1-x^0 <= 0 /\ y^0-y^post5 == 0 /\ x^0-x^post5 == 0), cost: 1 6: l2 -> l0 : x^0'=x^post6, y^0'=y^post6, (-y^post6+y^0 == 0 /\ 1+y^0 <= 0 /\ x^0-x^post6 == 0), cost: 1 7: l2 -> l0 : x^0'=x^post7, y^0'=y^post7, (x^0-x^post7 == 0 /\ 1-y^0 <= 0 /\ -y^post7+y^0 == 0), cost: 1 8: l3 -> l1 : x^0'=x^post8, y^0'=y^post8, (x^0-x^post8 == 0 /\ y^0-y^post8 == 0), cost: 1 9: l4 -> l3 : x^0'=x^post9, y^0'=y^post9, (-y^post9+y^0 == 0 /\ x^0-x^post9 == 0), cost: 1 Applied preprocessing Original rule: l0 -> l1 : x^0'=x^post0, y^0'=y^post0, (y^0-y^post0 == 0 /\ -x^0-y^0 <= 0 /\ -1-x^0+x^post0 == 0 /\ 1+x^0-y^0 <= 0), cost: 1 New rule: l0 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 1 Applied preprocessing Original rule: l0 -> l1 : x^0'=x^post1, y^0'=y^post1, (1+x^0+y^0 <= 0 /\ -1+y^post1-y^0 == 0 /\ x^0-y^0 <= 0 /\ x^0-x^post1 == 0), cost: 1 New rule: l0 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 1 Applied preprocessing Original rule: l0 -> l1 : x^0'=x^post2, y^0'=y^post2, (1-x^0+y^0 <= 0 /\ -y^post2+y^0 == 0 /\ -1+x^0+y^0 <= 0 /\ 1-x^0+x^post2 == 0), cost: 1 New rule: l0 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 1 Applied preprocessing Original rule: l0 -> l1 : x^0'=x^post3, y^0'=y^post3, (2-x^0-y^0 <= 0 /\ x^0-x^post3 == 0 /\ 1-y^0+y^post3 == 0 /\ -x^0+y^0 <= 0), cost: 1 New rule: l0 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -x^0+y^0 <= 0), cost: 1 Applied preprocessing Original rule: l1 -> l2 : x^0'=x^post4, y^0'=y^post4, (x^0-x^post4 == 0 /\ 1+x^0 <= 0 /\ -y^post4+y^0 == 0), cost: 1 New rule: l1 -> l2 : 1+x^0 <= 0, cost: 1 Applied preprocessing Original rule: l1 -> l2 : x^0'=x^post5, y^0'=y^post5, (1-x^0 <= 0 /\ y^0-y^post5 == 0 /\ x^0-x^post5 == 0), cost: 1 New rule: l1 -> l2 : -1+x^0 >= 0, cost: 1 Applied preprocessing Original rule: l2 -> l0 : x^0'=x^post6, y^0'=y^post6, (-y^post6+y^0 == 0 /\ 1+y^0 <= 0 /\ x^0-x^post6 == 0), cost: 1 New rule: l2 -> l0 : 1+y^0 <= 0, cost: 1 Applied preprocessing Original rule: l2 -> l0 : x^0'=x^post7, y^0'=y^post7, (x^0-x^post7 == 0 /\ 1-y^0 <= 0 /\ -y^post7+y^0 == 0), cost: 1 New rule: l2 -> l0 : -1+y^0 >= 0, cost: 1 Applied preprocessing Original rule: l3 -> l1 : x^0'=x^post8, y^0'=y^post8, (x^0-x^post8 == 0 /\ y^0-y^post8 == 0), cost: 1 New rule: l3 -> l1 : TRUE, cost: 1 Applied preprocessing Original rule: l4 -> l3 : x^0'=x^post9, y^0'=y^post9, (-y^post9+y^0 == 0 /\ x^0-x^post9 == 0), cost: 1 New rule: l4 -> l3 : TRUE, cost: 1 Simplified rules Start location: l4 10: l0 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 1 11: l0 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 1 12: l0 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 1 13: l0 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -x^0+y^0 <= 0), cost: 1 14: l1 -> l2 : 1+x^0 <= 0, cost: 1 15: l1 -> l2 : -1+x^0 >= 0, cost: 1 16: l2 -> l0 : 1+y^0 <= 0, cost: 1 17: l2 -> l0 : -1+y^0 >= 0, cost: 1 18: l3 -> l1 : TRUE, cost: 1 19: l4 -> l3 : TRUE, cost: 1 Eliminating location l3 by chaining: Applied chaining First rule: l4 -> l3 : TRUE, cost: 1 Second rule: l3 -> l1 : TRUE, cost: 1 New rule: l4 -> l1 : TRUE, cost: 2 Applied deletion Removed the following rules: 18 19 Eliminated locations on linear paths Start location: l4 10: l0 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 1 11: l0 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 1 12: l0 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 1 13: l0 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -x^0+y^0 <= 0), cost: 1 14: l1 -> l2 : 1+x^0 <= 0, cost: 1 15: l1 -> l2 : -1+x^0 >= 0, cost: 1 16: l2 -> l0 : 1+y^0 <= 0, cost: 1 17: l2 -> l0 : -1+y^0 >= 0, cost: 1 20: l4 -> l1 : TRUE, cost: 2 Eliminating location l2 by chaining: Applied chaining First rule: l1 -> l2 : 1+x^0 <= 0, cost: 1 Second rule: l2 -> l0 : 1+y^0 <= 0, cost: 1 New rule: l1 -> l0 : (1+x^0 <= 0 /\ 1+y^0 <= 0), cost: 2 Applied chaining First rule: l1 -> l2 : 1+x^0 <= 0, cost: 1 Second rule: l2 -> l0 : -1+y^0 >= 0, cost: 1 New rule: l1 -> l0 : (-1+y^0 >= 0 /\ 1+x^0 <= 0), cost: 2 Applied chaining First rule: l1 -> l2 : -1+x^0 >= 0, cost: 1 Second rule: l2 -> l0 : 1+y^0 <= 0, cost: 1 New rule: l1 -> l0 : (-1+x^0 >= 0 /\ 1+y^0 <= 0), cost: 2 Applied chaining First rule: l1 -> l2 : -1+x^0 >= 0, cost: 1 Second rule: l2 -> l0 : -1+y^0 >= 0, cost: 1 New rule: l1 -> l0 : (-1+x^0 >= 0 /\ -1+y^0 >= 0), cost: 2 Applied deletion Removed the following rules: 14 15 16 17 Eliminated locations on tree-shaped paths Start location: l4 10: l0 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 1 11: l0 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 1 12: l0 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 1 13: l0 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -x^0+y^0 <= 0), cost: 1 21: l1 -> l0 : (1+x^0 <= 0 /\ 1+y^0 <= 0), cost: 2 22: l1 -> l0 : (-1+y^0 >= 0 /\ 1+x^0 <= 0), cost: 2 23: l1 -> l0 : (-1+x^0 >= 0 /\ 1+y^0 <= 0), cost: 2 24: l1 -> l0 : (-1+x^0 >= 0 /\ -1+y^0 >= 0), cost: 2 20: l4 -> l1 : TRUE, cost: 2 Eliminating location l0 by chaining: Applied chaining First rule: l1 -> l0 : (1+x^0 <= 0 /\ 1+y^0 <= 0), cost: 2 Second rule: l0 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 1 New rule: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ 1+x^0 <= 0 /\ 1+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ 1+x^0 <= 0 /\ 1+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=1+y^0, (1+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (1+x^0 <= 0 /\ 1+y^0 <= 0), cost: 2 Second rule: l0 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 1 New rule: l1 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ 1+x^0 <= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ 1+x^0 <= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ 1+x^0 <= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (-1+y^0 >= 0 /\ 1+x^0 <= 0), cost: 2 Second rule: l0 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 1 New rule: l1 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ -1+y^0 >= 0 /\ 1+x^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ -1+y^0 >= 0 /\ 1+x^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0 <= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (-1+y^0 >= 0 /\ 1+x^0 <= 0), cost: 2 Second rule: l0 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 1 New rule: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ -1+y^0 >= 0 /\ 1+x^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ -1+y^0 >= 0 /\ 1+x^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ -1+y^0 >= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (-1+x^0 >= 0 /\ 1+y^0 <= 0), cost: 2 Second rule: l0 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 1 New rule: l1 -> l1 : x^0'=-1+x^0, (-1+x^0 >= 0 /\ 1-x^0+y^0 <= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : x^0'=-1+x^0, (-1+x^0 >= 0 /\ 1-x^0+y^0 <= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=-1+x^0, (-1+x^0 >= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (-1+x^0 >= 0 /\ 1+y^0 <= 0), cost: 2 Second rule: l0 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -x^0+y^0 <= 0), cost: 1 New rule: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -1+x^0 >= 0 /\ -x^0+y^0 <= 0 /\ 1+y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -1+x^0 >= 0 /\ -x^0+y^0 <= 0 /\ 1+y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ 1+y^0 <= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (-1+x^0 >= 0 /\ -1+y^0 >= 0), cost: 2 Second rule: l0 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0-y^0 <= 0), cost: 1 New rule: l1 -> l1 : x^0'=1+x^0, (-1+x^0 >= 0 /\ -x^0-y^0 <= 0 /\ -1+y^0 >= 0 /\ 1+x^0-y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : x^0'=1+x^0, (-1+x^0 >= 0 /\ -x^0-y^0 <= 0 /\ -1+y^0 >= 0 /\ 1+x^0-y^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=1+x^0, (-1+x^0 >= 0 /\ 1+x^0-y^0 <= 0), cost: 3 Applied chaining First rule: l1 -> l0 : (-1+x^0 >= 0 /\ -1+y^0 >= 0), cost: 2 Second rule: l0 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -x^0+y^0 <= 0), cost: 1 New rule: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -1+x^0 >= 0 /\ -1+y^0 >= 0 /\ -x^0+y^0 <= 0), cost: 3 Applied simplification Original rule: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ -1+x^0 >= 0 /\ -1+y^0 >= 0 /\ -x^0+y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=-1+y^0, (-1+y^0 >= 0 /\ -x^0+y^0 <= 0), cost: 3 Applied deletion Removed the following rules: 10 11 12 13 21 22 23 24 Eliminated locations on tree-shaped paths Start location: l4 25: l1 -> l1 : y^0'=1+y^0, (1+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 26: l1 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ 1+x^0 <= 0), cost: 3 27: l1 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0 <= 0), cost: 3 28: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ -1+y^0 >= 0), cost: 3 29: l1 -> l1 : x^0'=-1+x^0, (-1+x^0 >= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 30: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ 1+y^0 <= 0), cost: 3 31: l1 -> l1 : x^0'=1+x^0, (-1+x^0 >= 0 /\ 1+x^0-y^0 <= 0), cost: 3 32: l1 -> l1 : y^0'=-1+y^0, (-1+y^0 >= 0 /\ -x^0+y^0 <= 0), cost: 3 20: l4 -> l1 : TRUE, cost: 2 Applied acceleration Original rule: l1 -> l1 : y^0'=1+y^0, (1+y^0 <= 0 /\ x^0-y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=n7+y^0, (n7 >= 0 /\ -n7-y^0 >= 0 /\ -x^0+y^0 >= 0), cost: 3*n7 Applied instantiation Original rule: l1 -> l1 : y^0'=n7+y^0, (n7 >= 0 /\ -n7-y^0 >= 0 /\ -x^0+y^0 >= 0), cost: 3*n7 New rule: l1 -> l1 : y^0'=0, (0 >= 0 /\ -y^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*y^0 Applied acceleration Original rule: l1 -> l1 : x^0'=-1+x^0, (1-x^0+y^0 <= 0 /\ 1+x^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=x^0-n9, (-1-x^0 >= 0 /\ n9 >= 0 /\ x^0-y^0-n9 >= 0), cost: 3*n9 Applied instantiation Original rule: l1 -> l1 : x^0'=x^0-n9, (-1-x^0 >= 0 /\ n9 >= 0 /\ x^0-y^0-n9 >= 0), cost: 3*n9 New rule: l1 -> l1 : x^0'=y^0, (0 >= 0 /\ -1-x^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*x^0-3*y^0 Applied acceleration Original rule: l1 -> l1 : x^0'=1+x^0, (-x^0-y^0 <= 0 /\ 1+x^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=x^0+n11, (x^0+y^0 >= 0 /\ n11 >= 0 /\ -x^0-n11 >= 0), cost: 3*n11 Applied instantiation Original rule: l1 -> l1 : x^0'=x^0+n11, (x^0+y^0 >= 0 /\ n11 >= 0 /\ -x^0-n11 >= 0), cost: 3*n11 New rule: l1 -> l1 : x^0'=0, (0 >= 0 /\ x^0+y^0 >= 0 /\ -x^0 >= 0), cost: -3*x^0 Applied acceleration Original rule: l1 -> l1 : y^0'=1+y^0, (1+x^0+y^0 <= 0 /\ -1+y^0 >= 0), cost: 3 New rule: l1 -> l1 : y^0'=n13+y^0, (-x^0-n13-y^0 >= 0 /\ -1+y^0 >= 0 /\ n13 >= 0), cost: 3*n13 Applied instantiation Original rule: l1 -> l1 : y^0'=n13+y^0, (-x^0-n13-y^0 >= 0 /\ -1+y^0 >= 0 /\ n13 >= 0), cost: 3*n13 New rule: l1 -> l1 : y^0'=-x^0, (0 >= 0 /\ -x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: -3*x^0-3*y^0 Applied acceleration Original rule: l1 -> l1 : x^0'=-1+x^0, (-1+x^0 >= 0 /\ 1+y^0 <= 0 /\ -1+x^0+y^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=x^0-n15, (x^0-n15 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0 /\ n15 >= 0), cost: 3*n15 Applied instantiation Original rule: l1 -> l1 : x^0'=x^0-n15, (x^0-n15 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0 /\ n15 >= 0), cost: 3*n15 New rule: l1 -> l1 : x^0'=0, (0 >= 0 /\ x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 3*x^0 Applied acceleration Original rule: l1 -> l1 : y^0'=-1+y^0, (2-x^0-y^0 <= 0 /\ 1+y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=-n17+y^0, (-1+x^0-n17+y^0 >= 0 /\ n17 >= 0 /\ -1-y^0 >= 0), cost: 3*n17 Applied instantiation Original rule: l1 -> l1 : y^0'=-n17+y^0, (-1+x^0-n17+y^0 >= 0 /\ n17 >= 0 /\ -1-y^0 >= 0), cost: 3*n17 New rule: l1 -> l1 : y^0'=1-x^0, (0 >= 0 /\ -1-y^0 >= 0 /\ -1+x^0+y^0 >= 0), cost: -3+3*x^0+3*y^0 Applied acceleration Original rule: l1 -> l1 : x^0'=1+x^0, (-1+x^0 >= 0 /\ 1+x^0-y^0 <= 0), cost: 3 New rule: l1 -> l1 : x^0'=x^0+n19, (-1+x^0 >= 0 /\ n19 >= 0 /\ -x^0-n19+y^0 >= 0), cost: 3*n19 Applied instantiation Original rule: l1 -> l1 : x^0'=x^0+n19, (-1+x^0 >= 0 /\ n19 >= 0 /\ -x^0-n19+y^0 >= 0), cost: 3*n19 New rule: l1 -> l1 : x^0'=y^0, (0 >= 0 /\ -1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*x^0+3*y^0 Applied acceleration Original rule: l1 -> l1 : y^0'=-1+y^0, (-1+y^0 >= 0 /\ -x^0+y^0 <= 0), cost: 3 New rule: l1 -> l1 : y^0'=-n21+y^0, (-n21+y^0 >= 0 /\ n21 >= 0 /\ x^0-y^0 >= 0), cost: 3*n21 Applied instantiation Original rule: l1 -> l1 : y^0'=-n21+y^0, (-n21+y^0 >= 0 /\ n21 >= 0 /\ x^0-y^0 >= 0), cost: 3*n21 New rule: l1 -> l1 : y^0'=0, (0 >= 0 /\ y^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*y^0 Applied simplification Original rule: l1 -> l1 : y^0'=0, (0 >= 0 /\ -y^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*y^0 New rule: l1 -> l1 : y^0'=0, (-x^0+y^0 >= 0 /\ y^0 <= 0), cost: -3*y^0 Applied simplification Original rule: l1 -> l1 : x^0'=y^0, (0 >= 0 /\ -1-x^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*x^0-3*y^0 New rule: l1 -> l1 : x^0'=y^0, (1+x^0 <= 0 /\ x^0-y^0 >= 0), cost: 3*x^0-3*y^0 Applied simplification Original rule: l1 -> l1 : x^0'=0, (0 >= 0 /\ x^0+y^0 >= 0 /\ -x^0 >= 0), cost: -3*x^0 New rule: l1 -> l1 : x^0'=0, (x^0 <= 0 /\ x^0+y^0 >= 0), cost: -3*x^0 Applied simplification Original rule: l1 -> l1 : y^0'=-x^0, (0 >= 0 /\ -x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: -3*x^0-3*y^0 New rule: l1 -> l1 : y^0'=-x^0, (-x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: -3*x^0-3*y^0 Applied simplification Original rule: l1 -> l1 : x^0'=0, (0 >= 0 /\ x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 3*x^0 New rule: l1 -> l1 : x^0'=0, (x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 3*x^0 Applied simplification Original rule: l1 -> l1 : y^0'=1-x^0, (0 >= 0 /\ -1-y^0 >= 0 /\ -1+x^0+y^0 >= 0), cost: -3+3*x^0+3*y^0 New rule: l1 -> l1 : y^0'=1-x^0, (1+y^0 <= 0 /\ -1+x^0+y^0 >= 0), cost: -3+3*x^0+3*y^0 Applied simplification Original rule: l1 -> l1 : x^0'=y^0, (0 >= 0 /\ -1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*x^0+3*y^0 New rule: l1 -> l1 : x^0'=y^0, (-1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*x^0+3*y^0 Applied simplification Original rule: l1 -> l1 : y^0'=0, (0 >= 0 /\ y^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*y^0 New rule: l1 -> l1 : y^0'=0, (y^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*y^0 Applied deletion Removed the following rules: 25 26 27 28 29 30 31 32 Accelerated simple loops Start location: l4 41: l1 -> l1 : y^0'=0, (-x^0+y^0 >= 0 /\ y^0 <= 0), cost: -3*y^0 42: l1 -> l1 : x^0'=y^0, (1+x^0 <= 0 /\ x^0-y^0 >= 0), cost: 3*x^0-3*y^0 43: l1 -> l1 : x^0'=0, (x^0 <= 0 /\ x^0+y^0 >= 0), cost: -3*x^0 44: l1 -> l1 : y^0'=-x^0, (-x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: -3*x^0-3*y^0 45: l1 -> l1 : x^0'=0, (x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 3*x^0 46: l1 -> l1 : y^0'=1-x^0, (1+y^0 <= 0 /\ -1+x^0+y^0 >= 0), cost: -3+3*x^0+3*y^0 47: l1 -> l1 : x^0'=y^0, (-1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*x^0+3*y^0 48: l1 -> l1 : y^0'=0, (y^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*y^0 20: l4 -> l1 : TRUE, cost: 2 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : y^0'=0, (-x^0+y^0 >= 0 /\ y^0 <= 0), cost: -3*y^0 New rule: l4 -> l1 : y^0'=0, (-x^0+y^0 >= 0 /\ y^0 <= 0), cost: 2-3*y^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : x^0'=y^0, (1+x^0 <= 0 /\ x^0-y^0 >= 0), cost: 3*x^0-3*y^0 New rule: l4 -> l1 : x^0'=y^0, (1+x^0 <= 0 /\ x^0-y^0 >= 0), cost: 2+3*x^0-3*y^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : x^0'=0, (x^0 <= 0 /\ x^0+y^0 >= 0), cost: -3*x^0 New rule: l4 -> l1 : x^0'=0, (x^0 <= 0 /\ x^0+y^0 >= 0), cost: 2-3*x^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : y^0'=-x^0, (-x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: -3*x^0-3*y^0 New rule: l4 -> l1 : y^0'=-x^0, (-x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: 2-3*x^0-3*y^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : x^0'=0, (x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 3*x^0 New rule: l4 -> l1 : x^0'=0, (x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 2+3*x^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : y^0'=1-x^0, (1+y^0 <= 0 /\ -1+x^0+y^0 >= 0), cost: -3+3*x^0+3*y^0 New rule: l4 -> l1 : y^0'=1-x^0, (1+y^0 <= 0 /\ -1+x^0+y^0 >= 0), cost: -1+3*x^0+3*y^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : x^0'=y^0, (-1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: -3*x^0+3*y^0 New rule: l4 -> l1 : x^0'=y^0, (-1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: 2-3*x^0+3*y^0 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : y^0'=0, (y^0 >= 0 /\ x^0-y^0 >= 0), cost: 3*y^0 New rule: l4 -> l1 : y^0'=0, (y^0 >= 0 /\ x^0-y^0 >= 0), cost: 2+3*y^0 Applied deletion Removed the following rules: 41 42 43 44 45 46 47 48 Chained accelerated rules with incoming rules Start location: l4 20: l4 -> l1 : TRUE, cost: 2 49: l4 -> l1 : y^0'=0, (-x^0+y^0 >= 0 /\ y^0 <= 0), cost: 2-3*y^0 50: l4 -> l1 : x^0'=y^0, (1+x^0 <= 0 /\ x^0-y^0 >= 0), cost: 2+3*x^0-3*y^0 51: l4 -> l1 : x^0'=0, (x^0 <= 0 /\ x^0+y^0 >= 0), cost: 2-3*x^0 52: l4 -> l1 : y^0'=-x^0, (-x^0-y^0 >= 0 /\ -1+y^0 >= 0), cost: 2-3*x^0-3*y^0 53: l4 -> l1 : x^0'=0, (x^0 >= 0 /\ 1-x^0-y^0 >= 0 /\ -1-y^0 >= 0), cost: 2+3*x^0 54: l4 -> l1 : y^0'=1-x^0, (1+y^0 <= 0 /\ -1+x^0+y^0 >= 0), cost: -1+3*x^0+3*y^0 55: l4 -> l1 : x^0'=y^0, (-1+x^0 >= 0 /\ -x^0+y^0 >= 0), cost: 2-3*x^0+3*y^0 56: l4 -> l1 : y^0'=0, (y^0 >= 0 /\ x^0-y^0 >= 0), cost: 2+3*y^0 Removed unreachable locations and irrelevant leafs Start location: l4 Computing asymptotic complexity Proved the following lower bound Complexity: Unknown Cpx degree: ? Solved cost: 0 Rule cost: 0