WORST_CASE(Omega(0),?) Initial ITS Start location: l4 0: l0 -> l1 : __const_20^0'=__const_20^post0, j^0'=j^post0, i^0'=i^post0, (__const_20^0-__const_20^post0 == 0 /\ j^0-j^post0 == 0 /\ -i^post0+i^0 == 0 /\ __const_20^0-j^0 <= 0), cost: 1 1: l0 -> l2 : __const_20^0'=__const_20^post1, j^0'=j^post1, i^0'=i^post1, (j^0-j^post1 == 0 /\ __const_20^0-__const_20^post1 == 0 /\ i^0-i^post1 == 0 /\ 1-__const_20^0+j^0 <= 0), cost: 1 2: l2 -> l0 : __const_20^0'=__const_20^post2, j^0'=j^post2, i^0'=i^post2, (-2-j^post2+i^post2 == 0 /\ -2-j^0+j^post2 == 0 /\ __const_20^0-__const_20^post2 == 0), cost: 1 3: l3 -> l2 : __const_20^0'=__const_20^post3, j^0'=j^post3, i^0'=i^post3, (i^0-i^post3 == 0 /\ j^post3 == 0 /\ __const_20^0-__const_20^post3 == 0), cost: 1 4: l4 -> l3 : __const_20^0'=__const_20^post4, j^0'=j^post4, i^0'=i^post4, (j^0-j^post4 == 0 /\ i^0-i^post4 == 0 /\ __const_20^0-__const_20^post4 == 0), cost: 1 Removed unreachable rules and leafs Start location: l4 1: l0 -> l2 : __const_20^0'=__const_20^post1, j^0'=j^post1, i^0'=i^post1, (j^0-j^post1 == 0 /\ __const_20^0-__const_20^post1 == 0 /\ i^0-i^post1 == 0 /\ 1-__const_20^0+j^0 <= 0), cost: 1 2: l2 -> l0 : __const_20^0'=__const_20^post2, j^0'=j^post2, i^0'=i^post2, (-2-j^post2+i^post2 == 0 /\ -2-j^0+j^post2 == 0 /\ __const_20^0-__const_20^post2 == 0), cost: 1 3: l3 -> l2 : __const_20^0'=__const_20^post3, j^0'=j^post3, i^0'=i^post3, (i^0-i^post3 == 0 /\ j^post3 == 0 /\ __const_20^0-__const_20^post3 == 0), cost: 1 4: l4 -> l3 : __const_20^0'=__const_20^post4, j^0'=j^post4, i^0'=i^post4, (j^0-j^post4 == 0 /\ i^0-i^post4 == 0 /\ __const_20^0-__const_20^post4 == 0), cost: 1 Applied preprocessing Original rule: l0 -> l2 : __const_20^0'=__const_20^post1, j^0'=j^post1, i^0'=i^post1, (j^0-j^post1 == 0 /\ __const_20^0-__const_20^post1 == 0 /\ i^0-i^post1 == 0 /\ 1-__const_20^0+j^0 <= 0), cost: 1 New rule: l0 -> l2 : 1-__const_20^0+j^0 <= 0, cost: 1 Applied preprocessing Original rule: l2 -> l0 : __const_20^0'=__const_20^post2, j^0'=j^post2, i^0'=i^post2, (-2-j^post2+i^post2 == 0 /\ -2-j^0+j^post2 == 0 /\ __const_20^0-__const_20^post2 == 0), cost: 1 New rule: l2 -> l0 : j^0'=2+j^0, i^0'=4+j^0, TRUE, cost: 1 Applied preprocessing Original rule: l3 -> l2 : __const_20^0'=__const_20^post3, j^0'=j^post3, i^0'=i^post3, (i^0-i^post3 == 0 /\ j^post3 == 0 /\ __const_20^0-__const_20^post3 == 0), cost: 1 New rule: l3 -> l2 : j^0'=0, TRUE, cost: 1 Applied preprocessing Original rule: l4 -> l3 : __const_20^0'=__const_20^post4, j^0'=j^post4, i^0'=i^post4, (j^0-j^post4 == 0 /\ i^0-i^post4 == 0 /\ __const_20^0-__const_20^post4 == 0), cost: 1 New rule: l4 -> l3 : TRUE, cost: 1 Simplified rules Start location: l4 5: l0 -> l2 : 1-__const_20^0+j^0 <= 0, cost: 1 6: l2 -> l0 : j^0'=2+j^0, i^0'=4+j^0, TRUE, cost: 1 7: l3 -> l2 : j^0'=0, TRUE, cost: 1 8: l4 -> l3 : TRUE, cost: 1 Eliminating location l3 by chaining: Applied chaining First rule: l4 -> l3 : TRUE, cost: 1 Second rule: l3 -> l2 : j^0'=0, TRUE, cost: 1 New rule: l4 -> l2 : j^0'=0, TRUE, cost: 2 Applied deletion Removed the following rules: 7 8 Eliminating location l0 by chaining: Applied chaining First rule: l2 -> l0 : j^0'=2+j^0, i^0'=4+j^0, TRUE, cost: 1 Second rule: l0 -> l2 : 1-__const_20^0+j^0 <= 0, cost: 1 New rule: l2 -> l2 : j^0'=2+j^0, i^0'=4+j^0, 3-__const_20^0+j^0 <= 0, cost: 2 Applied deletion Removed the following rules: 5 6 Eliminated locations on linear paths Start location: l4 10: l2 -> l2 : j^0'=2+j^0, i^0'=4+j^0, 3-__const_20^0+j^0 <= 0, cost: 2 9: l4 -> l2 : j^0'=0, TRUE, cost: 2 Applied acceleration Original rule: l2 -> l2 : j^0'=2+j^0, i^0'=4+j^0, 3-__const_20^0+j^0 <= 0, cost: 2 New rule: l2 -> l2 : j^0'=2*n0+j^0, i^0'=2+2*n0+j^0, (-1+__const_20^0-2*n0-j^0 >= 0 /\ -1+n0 >= 0), cost: 2*n0 Applied deletion Removed the following rules: 10 Accelerated simple loops Start location: l4 11: l2 -> l2 : j^0'=2*n0+j^0, i^0'=2+2*n0+j^0, (-1+__const_20^0-2*n0-j^0 >= 0 /\ -1+n0 >= 0), cost: 2*n0 9: l4 -> l2 : j^0'=0, TRUE, cost: 2 Applied chaining First rule: l4 -> l2 : j^0'=0, TRUE, cost: 2 Second rule: l2 -> l2 : j^0'=2*n0+j^0, i^0'=2+2*n0+j^0, (-1+__const_20^0-2*n0-j^0 >= 0 /\ -1+n0 >= 0), cost: 2*n0 New rule: l4 -> l2 : j^0'=2*n0, i^0'=2+2*n0, (-1+n0 >= 0 /\ -1+__const_20^0-2*n0 >= 0), cost: 2+2*n0 Applied deletion Removed the following rules: 11 Chained accelerated rules with incoming rules Start location: l4 9: l4 -> l2 : j^0'=0, TRUE, cost: 2 12: l4 -> l2 : j^0'=2*n0, i^0'=2+2*n0, (-1+n0 >= 0 /\ -1+__const_20^0-2*n0 >= 0), cost: 2+2*n0 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