WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1_0_main_Load -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2>-1 && arg2P_1>-1 && arg1>0 ], cost: 1 1: f142_0_main_LE -> f153_0_main_LE : arg1'=arg1P_2, arg2'=arg2P_2, [ arg2>0 && arg2==arg1P_2 && arg1==arg2P_2 ], cost: 1 2: f153_0_main_LE -> f142_0_main_LE : arg1'=arg1P_3, arg2'=arg2P_3, [ 0==arg2 && 0==arg1P_3 && -1+arg1==arg2P_3 ], cost: 1 3: f153_0_main_LE -> f153_0_main_LE : arg1'=arg1P_4, arg2'=arg2P_4, [ arg2>0 && arg1==arg1P_4 && -1+arg2==arg2P_4 ], cost: 1 4: __init -> f1_0_main_Load : arg1'=arg1P_5, arg2'=arg2P_5, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 4: __init -> f1_0_main_Load : arg1'=arg1P_5, arg2'=arg2P_5, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1_0_main_Load -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2>-1 && arg2P_1>-1 && arg1>0 ], cost: 1 1: f142_0_main_LE -> f153_0_main_LE : arg1'=arg2, arg2'=arg1, [ arg2>0 ], cost: 1 2: f153_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg1, [ 0==arg2 ], cost: 1 3: f153_0_main_LE -> f153_0_main_LE : arg2'=-1+arg2, [ arg2>0 ], cost: 1 4: __init -> f1_0_main_Load : arg1'=arg1P_5, arg2'=arg2P_5, [], cost: 1 ### Simplification by acceleration and chaining ### Accelerating simple loops of location 2. Accelerating the following rules: 3: f153_0_main_LE -> f153_0_main_LE : arg2'=-1+arg2, [ arg2>0 ], cost: 1 Accelerated rule 3 with backward acceleration, yielding the new rule 5. [accelerate] Nesting with 1 inner and 1 outer candidates Removing the simple loops: 3. Accelerated all simple loops using metering functions (where possible): Start location: __init 0: f1_0_main_Load -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2>-1 && arg2P_1>-1 && arg1>0 ], cost: 1 1: f142_0_main_LE -> f153_0_main_LE : arg1'=arg2, arg2'=arg1, [ arg2>0 ], cost: 1 2: f153_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg1, [ 0==arg2 ], cost: 1 5: f153_0_main_LE -> f153_0_main_LE : arg2'=0, [ arg2>=0 ], cost: arg2 4: __init -> f1_0_main_Load : arg1'=arg1P_5, arg2'=arg2P_5, [], cost: 1 Chained accelerated rules (with incoming rules): Start location: __init 0: f1_0_main_Load -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2>-1 && arg2P_1>-1 && arg1>0 ], cost: 1 1: f142_0_main_LE -> f153_0_main_LE : arg1'=arg2, arg2'=arg1, [ arg2>0 ], cost: 1 6: f142_0_main_LE -> f153_0_main_LE : arg1'=arg2, arg2'=0, [ arg2>0 && arg1>=0 ], cost: 1+arg1 2: f153_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg1, [ 0==arg2 ], cost: 1 4: __init -> f1_0_main_Load : arg1'=arg1P_5, arg2'=arg2P_5, [], cost: 1 Eliminated locations (on linear paths): Start location: __init 1: f142_0_main_LE -> f153_0_main_LE : arg1'=arg2, arg2'=arg1, [ arg2>0 ], cost: 1 6: f142_0_main_LE -> f153_0_main_LE : arg1'=arg2, arg2'=0, [ arg2>0 && arg1>=0 ], cost: 1+arg1 2: f153_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg1, [ 0==arg2 ], cost: 1 7: __init -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2P_5>-1 && arg2P_1>-1 && arg1P_5>0 ], cost: 2 Eliminated locations (on tree-shaped paths): Start location: __init 8: f142_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg2, [ arg2>0 && 0==arg1 ], cost: 2 9: f142_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg2, [ arg2>0 && arg1>=0 ], cost: 2+arg1 7: __init -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2P_5>-1 && arg2P_1>-1 && arg1P_5>0 ], cost: 2 Accelerating simple loops of location 1. Accelerating the following rules: 8: f142_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg2, [ arg2>0 && 0==arg1 ], cost: 2 9: f142_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=-1+arg2, [ arg2>0 && arg1>=0 ], cost: 2+arg1 Accelerated rule 8 with backward acceleration, yielding the new rule 10. Accelerated rule 9 with backward acceleration, yielding the new rule 11. [accelerate] Nesting with 2 inner and 2 outer candidates Removing the simple loops: 8 9. Accelerated all simple loops using metering functions (where possible): Start location: __init 10: f142_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=0, [ 0==arg1 && arg2>=1 ], cost: 2*arg2 11: f142_0_main_LE -> f142_0_main_LE : arg1'=0, arg2'=0, [ arg1>=0 && arg2>=1 ], cost: 2*arg2 7: __init -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2P_5>-1 && arg2P_1>-1 && arg1P_5>0 ], cost: 2 Chained accelerated rules (with incoming rules): Start location: __init 7: __init -> f142_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, [ arg1P_1>-1 && arg2P_5>-1 && arg2P_1>-1 && arg1P_5>0 ], cost: 2 12: __init -> f142_0_main_LE : arg1'=0, arg2'=0, [ arg2P_1>=1 ], cost: 2+2*arg2P_1 13: __init -> f142_0_main_LE : arg1'=0, arg2'=0, [ arg2P_1>=1 ], cost: 2+2*arg2P_1 Removed unreachable locations (and leaf rules with constant cost): Start location: __init 12: __init -> f142_0_main_LE : arg1'=0, arg2'=0, [ arg2P_1>=1 ], cost: 2+2*arg2P_1 13: __init -> f142_0_main_LE : arg1'=0, arg2'=0, [ arg2P_1>=1 ], cost: 2+2*arg2P_1 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: __init 13: __init -> f142_0_main_LE : arg1'=0, arg2'=0, [ arg2P_1>=1 ], cost: 2+2*arg2P_1 Computing asymptotic complexity for rule 13 Resulting cost 0 has complexity: Unknown 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),?)