WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: __init 0: f1_0_main_Load -> f74_0_loop_LE : arg1'=arg1P_1, arg2'=arg2P_1, arg3'=arg3P_1, arg4'=arg4P_1, [ arg1P_1<=arg1 && arg2>-1 && arg1>0 && arg1P_1>0 && 0==arg2P_1 && arg2==arg3P_1 && arg2==arg4P_1 ], cost: 1 1: f74_0_loop_LE -> f74_0_loop_LE\' : arg1'=arg1P_2, arg2'=arg2P_2, arg3'=arg3P_2, arg4'=arg4P_2, [ arg4>-1 && arg3>0 && x7_1<=arg1 && arg1>0 && x7_1>0 && arg1==arg1P_2 && arg2==arg2P_2 && arg3==arg3P_2 && arg4==arg4P_2 ], cost: 1 2: f74_0_loop_LE\' -> f74_0_loop_LE : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, arg4'=arg4P_3, [ arg4>-1 && arg3>0 && arg1P_3<=arg1 && arg1>0 && arg1P_3>0 && arg4-2*x13_1-arg2<2 && arg4-2*x13_1-arg2>=0 && x13_1+arg2==arg2P_3 && arg4-x13_1-arg2==arg3P_3 && arg4==arg4P_3 ], cost: 1 3: __init -> f1_0_main_Load : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, arg4'=arg4P_4, [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 3: __init -> f1_0_main_Load : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, arg4'=arg4P_4, [], cost: 1 Simplified all rules, resulting in: Start location: __init 0: f1_0_main_Load -> f74_0_loop_LE : arg1'=arg1P_1, arg2'=0, arg3'=arg2, arg4'=arg2, [ arg1P_1<=arg1 && arg2>-1 && arg1>0 && arg1P_1>0 ], cost: 1 1: f74_0_loop_LE -> f74_0_loop_LE\' : [ arg4>-1 && arg3>0 && arg1>0 ], cost: 1 2: f74_0_loop_LE\' -> f74_0_loop_LE : arg1'=arg1P_3, arg2'=x13_1+arg2, arg3'=arg4-x13_1-arg2, [ arg4>-1 && arg3>0 && arg1P_3<=arg1 && arg1>0 && arg1P_3>0 && arg4-2*x13_1-arg2<2 && arg4-2*x13_1-arg2>=0 ], cost: 1 3: __init -> f1_0_main_Load : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, arg4'=arg4P_4, [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: __init 5: f74_0_loop_LE -> f74_0_loop_LE : arg1'=arg1P_3, arg2'=x13_1+arg2, arg3'=arg4-x13_1-arg2, [ arg4>-1 && arg3>0 && arg1>0 && arg1P_3<=arg1 && arg1P_3>0 && arg4-2*x13_1-arg2<2 && arg4-2*x13_1-arg2>=0 ], cost: 2 4: __init -> f74_0_loop_LE : arg1'=arg1P_1, arg2'=0, arg3'=arg2P_4, arg4'=arg2P_4, [ arg1P_1<=arg1P_4 && arg2P_4>-1 && arg1P_4>0 && arg1P_1>0 ], cost: 2 Accelerating simple loops of location 1. Accelerating the following rules: 5: f74_0_loop_LE -> f74_0_loop_LE : arg1'=arg1P_3, arg2'=x13_1+arg2, arg3'=arg4-x13_1-arg2, [ arg4>-1 && arg3>0 && arg1>0 && arg1P_3<=arg1 && arg1P_3>0 && arg4-2*x13_1-arg2<2 && arg4-2*x13_1-arg2>=0 ], cost: 2 Found no metering function for rule 5. Removing the simple loops:. Accelerated all simple loops using metering functions (where possible): Start location: __init 5: f74_0_loop_LE -> f74_0_loop_LE : arg1'=arg1P_3, arg2'=x13_1+arg2, arg3'=arg4-x13_1-arg2, [ arg4>-1 && arg3>0 && arg1>0 && arg1P_3<=arg1 && arg1P_3>0 && arg4-2*x13_1-arg2<2 && arg4-2*x13_1-arg2>=0 ], cost: 2 4: __init -> f74_0_loop_LE : arg1'=arg1P_1, arg2'=0, arg3'=arg2P_4, arg4'=arg2P_4, [ arg1P_1<=arg1P_4 && arg2P_4>-1 && arg1P_4>0 && arg1P_1>0 ], cost: 2 Chained accelerated rules (with incoming rules): Start location: __init 4: __init -> f74_0_loop_LE : arg1'=arg1P_1, arg2'=0, arg3'=arg2P_4, arg4'=arg2P_4, [ arg1P_1<=arg1P_4 && arg2P_4>-1 && arg1P_4>0 && arg1P_1>0 ], cost: 2 6: __init -> f74_0_loop_LE : arg1'=arg1P_3, arg2'=x13_1, arg3'=-x13_1+arg2P_4, arg4'=arg2P_4, [ arg2P_4>0 && arg1P_3>0 && -2*x13_1+arg2P_4<2 && -2*x13_1+arg2P_4>=0 ], cost: 4 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),?)