WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1_0_main_New -> f160_0_main_LE : arg1'=arg1P_1, arg2'=arg2P_1, arg3'=arg3P_1, [ arg1P_1>0 && 27==arg2P_1 && 28==arg3P_1 ], cost: 1 1: f160_0_main_LE -> f160_0_main_LE : arg1'=arg1P_2, arg2'=arg2P_2, arg3'=arg3P_2, [ -3+arg1P_2<=arg1 && arg3>0 && arg1>0 && arg1P_2>3 && -1+arg2==arg2P_2 && arg2==arg3P_2 ], cost: 1 2: f160_0_main_LE -> f167_0_length_InvokeMethod : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, [ 1+arg1P_3<=arg1 && arg3<1 && arg1>0 && arg1P_3>-1 ], cost: 1 3: f167_0_length_InvokeMethod -> f167_0_length_InvokeMethod : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg1>=1+arg1P_4 && arg1>0 && arg1P_4>-1 ], cost: 1 4: __init -> f1_0_main_New : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 4: __init -> f1_0_main_New : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1_0_main_New -> f160_0_main_LE : arg1'=arg1P_1, arg2'=27, arg3'=28, [ arg1P_1>0 ], cost: 1 1: f160_0_main_LE -> f160_0_main_LE : arg1'=arg1P_2, arg2'=-1+arg2, arg3'=arg2, [ -3+arg1P_2<=arg1 && arg3>0 && arg1>0 && arg1P_2>3 ], cost: 1 2: f160_0_main_LE -> f167_0_length_InvokeMethod : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, [ 1+arg1P_3<=arg1 && arg3<1 && arg1>0 && arg1P_3>-1 ], cost: 1 3: f167_0_length_InvokeMethod -> f167_0_length_InvokeMethod : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg1>=1+arg1P_4 && arg1>0 && arg1P_4>-1 ], cost: 1 4: __init -> f1_0_main_New : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [], cost: 1 ### Simplification by acceleration and chaining ### Accelerating simple loops of location 1. Accelerating the following rules: 1: f160_0_main_LE -> f160_0_main_LE : arg1'=arg1P_2, arg2'=-1+arg2, arg3'=arg2, [ -3+arg1P_2<=arg1 && arg3>0 && arg1>0 && arg1P_2>3 ], cost: 1 [test] deduced invariant 1+arg2-arg3<=0 Accelerated rule 1 with backward acceleration, yielding the new rule 5. [accelerate] Nesting with 1 inner and 1 outer candidates Accelerating simple loops of location 2. Accelerating the following rules: 3: f167_0_length_InvokeMethod -> f167_0_length_InvokeMethod : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg1>=1+arg1P_4 && arg1>0 && arg1P_4>-1 ], cost: 1 Failed to prove monotonicity of the guard of rule 3. [accelerate] Nesting with 1 inner and 1 outer candidates Accelerated all simple loops using metering functions (where possible): Start location: __init 0: f1_0_main_New -> f160_0_main_LE : arg1'=arg1P_1, arg2'=27, arg3'=28, [ arg1P_1>0 ], cost: 1 1: f160_0_main_LE -> f160_0_main_LE : arg1'=arg1P_2, arg2'=-1+arg2, arg3'=arg2, [ -3+arg1P_2<=arg1 && arg3>0 && arg1>0 && arg1P_2>3 ], cost: 1 2: f160_0_main_LE -> f167_0_length_InvokeMethod : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, [ 1+arg1P_3<=arg1 && arg3<1 && arg1>0 && arg1P_3>-1 ], cost: 1 5: f160_0_main_LE -> f160_0_main_LE : arg1'=arg1P_2, arg2'=-1, arg3'=0, [ -3+arg1P_2<=arg1 && arg1>0 && arg1P_2>3 && 1+arg2-arg3<=0 && 1+arg2>=1 ], cost: 1+arg2 3: f167_0_length_InvokeMethod -> f167_0_length_InvokeMethod : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg1>=1+arg1P_4 && arg1>0 && arg1P_4>-1 ], cost: 1 4: __init -> f1_0_main_New : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [], cost: 1 Chained accelerated rules (with incoming rules): Start location: __init 0: f1_0_main_New -> f160_0_main_LE : arg1'=arg1P_1, arg2'=27, arg3'=28, [ arg1P_1>0 ], cost: 1 6: f1_0_main_New -> f160_0_main_LE : arg1'=arg1P_2, arg2'=26, arg3'=27, [ arg1P_2>3 ], cost: 2 7: f1_0_main_New -> f160_0_main_LE : arg1'=arg1P_2, arg2'=-1, arg3'=0, [ arg1P_2>3 ], cost: 29 2: f160_0_main_LE -> f167_0_length_InvokeMethod : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, [ 1+arg1P_3<=arg1 && arg3<1 && arg1>0 && arg1P_3>-1 ], cost: 1 8: f160_0_main_LE -> f167_0_length_InvokeMethod : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, [ arg3<1 && arg1P_4>-1 && 1+arg1P_4<=-1+arg1 && 1<=-1+arg1 ], cost: 2 4: __init -> f1_0_main_New : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, [], cost: 1 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),?)