WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, [ 3==arg1P_1 ], cost: 1 12: f2 -> f3 : arg1'=arg1P_13, [ arg1>=3 && arg1==arg1P_13 ], cost: 1 14: f2 -> f13 : arg1'=arg1P_15, [ arg1<3 && arg1==arg1P_15 ], cost: 1 1: f4 -> f7 : arg1'=arg1P_2, [ arg1P_2==3+arg1 ], cost: 1 10: f7 -> f6 : arg1'=arg1P_11, [ arg1==arg1P_11 ], cost: 1 2: f8 -> f11 : arg1'=arg1P_3, [ arg1P_3==-2+arg1 ], cost: 1 6: f11 -> f10 : arg1'=arg1P_7, [ arg1==arg1P_7 ], cost: 1 3: f9 -> f12 : arg1'=arg1P_4, [ arg1P_4==1+arg1 ], cost: 1 7: f12 -> f10 : arg1'=arg1P_8, [ arg1==arg1P_8 ], cost: 1 4: f5 -> f8 : arg1'=arg1P_5, [ arg1>10 && arg1==arg1P_5 ], cost: 1 5: f5 -> f9 : arg1'=arg1P_6, [ arg1<=10 && arg1==arg1P_6 ], cost: 1 11: f10 -> f6 : arg1'=arg1P_12, [ arg1==arg1P_12 ], cost: 1 8: f3 -> f4 : arg1'=arg1P_9, [ arg1>5 && arg1==arg1P_9 ], cost: 1 9: f3 -> f5 : arg1'=arg1P_10, [ arg1<=5 && arg1==arg1P_10 ], cost: 1 13: f6 -> f2 : arg1'=arg1P_14, [ arg1==arg1P_14 ], cost: 1 15: __init -> f1 : arg1'=arg1P_16, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 15: __init -> f1 : arg1'=arg1P_16, [], cost: 1 Removed unreachable and leaf rules: Start location: __init 0: f1 -> f2 : arg1'=arg1P_1, [ 3==arg1P_1 ], cost: 1 12: f2 -> f3 : arg1'=arg1P_13, [ arg1>=3 && arg1==arg1P_13 ], cost: 1 1: f4 -> f7 : arg1'=arg1P_2, [ arg1P_2==3+arg1 ], cost: 1 10: f7 -> f6 : arg1'=arg1P_11, [ arg1==arg1P_11 ], cost: 1 2: f8 -> f11 : arg1'=arg1P_3, [ arg1P_3==-2+arg1 ], cost: 1 6: f11 -> f10 : arg1'=arg1P_7, [ arg1==arg1P_7 ], cost: 1 3: f9 -> f12 : arg1'=arg1P_4, [ arg1P_4==1+arg1 ], cost: 1 7: f12 -> f10 : arg1'=arg1P_8, [ arg1==arg1P_8 ], cost: 1 4: f5 -> f8 : arg1'=arg1P_5, [ arg1>10 && arg1==arg1P_5 ], cost: 1 5: f5 -> f9 : arg1'=arg1P_6, [ arg1<=10 && arg1==arg1P_6 ], cost: 1 11: f10 -> f6 : arg1'=arg1P_12, [ arg1==arg1P_12 ], cost: 1 8: f3 -> f4 : arg1'=arg1P_9, [ arg1>5 && arg1==arg1P_9 ], cost: 1 9: f3 -> f5 : arg1'=arg1P_10, [ arg1<=5 && arg1==arg1P_10 ], cost: 1 13: f6 -> f2 : arg1'=arg1P_14, [ arg1==arg1P_14 ], cost: 1 15: __init -> f1 : arg1'=arg1P_16, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1 -> f2 : arg1'=3, [], cost: 1 12: f2 -> f3 : [ arg1>=3 ], cost: 1 1: f4 -> f7 : arg1'=3+arg1, [], cost: 1 10: f7 -> f6 : [], cost: 1 2: f8 -> f11 : arg1'=-2+arg1, [], cost: 1 6: f11 -> f10 : [], cost: 1 3: f9 -> f12 : arg1'=1+arg1, [], cost: 1 7: f12 -> f10 : [], cost: 1 4: f5 -> f8 : [ arg1>10 ], cost: 1 5: f5 -> f9 : [ arg1<=10 ], cost: 1 11: f10 -> f6 : [], cost: 1 8: f3 -> f4 : [ arg1>5 ], cost: 1 9: f3 -> f5 : [ arg1<=5 ], cost: 1 13: f6 -> f2 : [], cost: 1 15: __init -> f1 : arg1'=arg1P_16, [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: __init 12: f2 -> f3 : [ arg1>=3 ], cost: 1 21: f5 -> f10 : arg1'=-2+arg1, [ arg1>10 ], cost: 3 22: f5 -> f10 : arg1'=1+arg1, [ arg1<=10 ], cost: 3 11: f10 -> f6 : [], cost: 1 9: f3 -> f5 : [ arg1<=5 ], cost: 1 18: f3 -> f6 : arg1'=3+arg1, [ arg1>5 ], cost: 3 13: f6 -> f2 : [], cost: 1 16: __init -> f2 : arg1'=3, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: __init 23: f2 -> f5 : [ arg1>=3 && arg1<=5 ], cost: 2 24: f2 -> f6 : arg1'=3+arg1, [ arg1>5 ], cost: 4 25: f5 -> f6 : arg1'=-2+arg1, [ arg1>10 ], cost: 4 26: f5 -> f6 : arg1'=1+arg1, [ arg1<=10 ], cost: 4 13: f6 -> f2 : [], cost: 1 16: __init -> f2 : arg1'=3, [], cost: 2 Eliminated locations (on tree-shaped paths): Start location: __init 28: f2 -> f2 : arg1'=3+arg1, [ arg1>5 ], cost: 5 29: f2 -> f2 : arg1'=1+arg1, [ arg1>=3 && arg1<=5 ], cost: 7 16: __init -> f2 : arg1'=3, [], cost: 2 Accelerating simple loops of location 1. Accelerating the following rules: 28: f2 -> f2 : arg1'=3+arg1, [ arg1>5 ], cost: 5 29: f2 -> f2 : arg1'=1+arg1, [ arg1>=3 && arg1<=5 ], cost: 7 Accelerated rule 28 with non-termination, yielding the new rule 30. Accelerated rule 29 with backward acceleration, yielding the new rule 31. [accelerate] Nesting with 1 inner and 1 outer candidates Removing the simple loops: 28 29. Accelerated all simple loops using metering functions (where possible): Start location: __init 30: f2 -> [14] : [ arg1>5 ], cost: NONTERM 31: f2 -> f2 : arg1'=6, [ arg1>=3 && 6-arg1>=0 ], cost: 42-7*arg1 16: __init -> f2 : arg1'=3, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: __init 16: __init -> f2 : arg1'=3, [], cost: 2 32: __init -> f2 : arg1'=6, [], cost: 23 Removed unreachable locations (and leaf rules with constant cost): Start location: __init ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: __init 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: [] WORST_CASE(Omega(1),?)