WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: l6 0: l0 -> l1 : i^0'=i^post_1, [ i^0==i^post_1 ], cost: 1 1: l0 -> l1 : i^0'=i^post_2, [ i^0==i^post_2 ], cost: 1 5: l1 -> l4 : i^0'=i^post_6, [ i^0==i^post_6 ], cost: 1 2: l2 -> l0 : i^0'=i^post_3, [ 10<=i^0 && i^0==i^post_3 ], cost: 1 3: l2 -> l3 : i^0'=i^post_4, [ 1+i^0<=10 && i^post_4==1+i^0 ], cost: 1 4: l3 -> l2 : i^0'=i^post_5, [ i^0==i^post_5 ], cost: 1 6: l5 -> l3 : i^0'=i^post_7, [ i^post_7==0 ], cost: 1 7: l6 -> l5 : i^0'=i^post_8, [ i^0==i^post_8 ], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 7: l6 -> l5 : i^0'=i^post_8, [ i^0==i^post_8 ], cost: 1 Removed unreachable and leaf rules: Start location: l6 3: l2 -> l3 : i^0'=i^post_4, [ 1+i^0<=10 && i^post_4==1+i^0 ], cost: 1 4: l3 -> l2 : i^0'=i^post_5, [ i^0==i^post_5 ], cost: 1 6: l5 -> l3 : i^0'=i^post_7, [ i^post_7==0 ], cost: 1 7: l6 -> l5 : i^0'=i^post_8, [ i^0==i^post_8 ], cost: 1 Simplified all rules, resulting in: Start location: l6 3: l2 -> l3 : i^0'=1+i^0, [ 1+i^0<=10 ], cost: 1 4: l3 -> l2 : [], cost: 1 6: l5 -> l3 : i^0'=0, [], cost: 1 7: l6 -> l5 : [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: l6 9: l3 -> l3 : i^0'=1+i^0, [ 1+i^0<=10 ], cost: 2 8: l6 -> l3 : i^0'=0, [], cost: 2 Accelerating simple loops of location 3. Accelerating the following rules: 9: l3 -> l3 : i^0'=1+i^0, [ 1+i^0<=10 ], cost: 2 Accelerated rule 9 with backward acceleration, yielding the new rule 10. [accelerate] Nesting with 1 inner and 1 outer candidates Removing the simple loops: 9. Accelerated all simple loops using metering functions (where possible): Start location: l6 10: l3 -> l3 : i^0'=10, [ 10-i^0>=0 ], cost: 20-2*i^0 8: l6 -> l3 : i^0'=0, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: l6 8: l6 -> l3 : i^0'=0, [], cost: 2 11: l6 -> l3 : i^0'=10, [], cost: 22 Removed unreachable locations (and leaf rules with constant cost): Start location: l6 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: l6 Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Constant Cpx degree: 0 Solved cost: 1 Rule cost: 1 Rule guard: [ i^0==i^post_8 ] WORST_CASE(Omega(1),?)