WORST_CASE(Omega(1),?)

### Pre-processing the ITS problem ###

Initial linear ITS problem
   Start location: __init
      0: f1 -> f2 : arg1'=arg1P_1, arg2'=arg2P_1, arg3'=arg3P_1, arg4'=arg4P_1, [ arg2==arg2P_1 && arg3==arg3P_1 && arg4==arg4P_1 ], cost: 1
      1: f2 -> f3 : arg1'=arg1P_2, arg2'=arg2P_2, arg3'=arg3P_2, arg4'=arg4P_2, [ arg1==arg1P_2 && arg3==arg3P_2 && arg4==arg4P_2 ], cost: 1
      2: f3 -> f4 : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, arg4'=arg4P_3, [ arg1==arg1P_3 && arg2==arg2P_3 && arg4==arg4P_3 ], cost: 1
      7: f4 -> f5 : arg1'=arg1P_8, arg2'=arg2P_8, arg3'=arg3P_8, arg4'=arg4P_8, [ arg2<=100 && arg3<=arg1 && arg1==arg1P_8 && arg2==arg2P_8 && arg3==arg3P_8 && arg4==arg4P_8 ], cost: 1
      9: f4 -> f10 : arg1'=arg1P_10, arg2'=arg2P_10, arg3'=arg3P_10, arg4'=arg4P_10, [ arg2>100 && arg1==arg1P_10 && arg2==arg2P_10 && arg3==arg3P_10 && arg4==arg4P_10 ], cost: 1
     10: f4 -> f10 : arg1'=arg1P_11, arg2'=arg2P_11, arg3'=arg3P_11, arg4'=arg4P_11, [ arg3>arg1 && arg1==arg1P_11 && arg2==arg2P_11 && arg3==arg3P_11 && arg4==arg4P_11 ], cost: 1
      3: f5 -> f6 : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, arg4'=arg4P_4, [ arg1==arg1P_4 && arg2==arg2P_4 && arg3==arg3P_4 && arg2==arg4P_4 ], cost: 1
      4: f6 -> f7 : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, arg4'=arg4P_5, [ arg1==arg1P_5 && arg3==arg2P_5 && arg3==arg3P_5 && arg4==arg4P_5 ], cost: 1
      5: f7 -> f8 : arg1'=arg1P_6, arg2'=arg2P_6, arg3'=arg3P_6, arg4'=arg4P_6, [ arg3P_6==1+arg4 && arg1==arg1P_6 && arg2==arg2P_6 && arg4==arg4P_6 ], cost: 1
      6: f8 -> f9 : arg1'=arg1P_7, arg2'=arg2P_7, arg3'=arg3P_7, arg4'=arg4P_7, [ arg1P_7==-1+arg1 && arg2==arg2P_7 && arg3==arg3P_7 && arg4==arg4P_7 ], cost: 1
      8: f9 -> f4 : arg1'=arg1P_9, arg2'=arg2P_9, arg3'=arg3P_9, arg4'=arg4P_9, [ arg1==arg1P_9 && arg2==arg2P_9 && arg3==arg3P_9 && arg4==arg4P_9 ], cost: 1
     11: __init -> f1 : arg1'=arg1P_12, arg2'=arg2P_12, arg3'=arg3P_12, arg4'=arg4P_12, [], cost: 1

Checking for constant complexity:
   The following rule is satisfiable with cost >= 1, yielding constant complexity:
     11: __init -> f1 : arg1'=arg1P_12, arg2'=arg2P_12, arg3'=arg3P_12, arg4'=arg4P_12, [], cost: 1

Removed unreachable and leaf rules:
   Start location: __init
      0: f1 -> f2 : arg1'=arg1P_1, arg2'=arg2P_1, arg3'=arg3P_1, arg4'=arg4P_1, [ arg2==arg2P_1 && arg3==arg3P_1 && arg4==arg4P_1 ], cost: 1
      1: f2 -> f3 : arg1'=arg1P_2, arg2'=arg2P_2, arg3'=arg3P_2, arg4'=arg4P_2, [ arg1==arg1P_2 && arg3==arg3P_2 && arg4==arg4P_2 ], cost: 1
      2: f3 -> f4 : arg1'=arg1P_3, arg2'=arg2P_3, arg3'=arg3P_3, arg4'=arg4P_3, [ arg1==arg1P_3 && arg2==arg2P_3 && arg4==arg4P_3 ], cost: 1
      7: f4 -> f5 : arg1'=arg1P_8, arg2'=arg2P_8, arg3'=arg3P_8, arg4'=arg4P_8, [ arg2<=100 && arg3<=arg1 && arg1==arg1P_8 && arg2==arg2P_8 && arg3==arg3P_8 && arg4==arg4P_8 ], cost: 1
      3: f5 -> f6 : arg1'=arg1P_4, arg2'=arg2P_4, arg3'=arg3P_4, arg4'=arg4P_4, [ arg1==arg1P_4 && arg2==arg2P_4 && arg3==arg3P_4 && arg2==arg4P_4 ], cost: 1
      4: f6 -> f7 : arg1'=arg1P_5, arg2'=arg2P_5, arg3'=arg3P_5, arg4'=arg4P_5, [ arg1==arg1P_5 && arg3==arg2P_5 && arg3==arg3P_5 && arg4==arg4P_5 ], cost: 1
      5: f7 -> f8 : arg1'=arg1P_6, arg2'=arg2P_6, arg3'=arg3P_6, arg4'=arg4P_6, [ arg3P_6==1+arg4 && arg1==arg1P_6 && arg2==arg2P_6 && arg4==arg4P_6 ], cost: 1
      6: f8 -> f9 : arg1'=arg1P_7, arg2'=arg2P_7, arg3'=arg3P_7, arg4'=arg4P_7, [ arg1P_7==-1+arg1 && arg2==arg2P_7 && arg3==arg3P_7 && arg4==arg4P_7 ], cost: 1
      8: f9 -> f4 : arg1'=arg1P_9, arg2'=arg2P_9, arg3'=arg3P_9, arg4'=arg4P_9, [ arg1==arg1P_9 && arg2==arg2P_9 && arg3==arg3P_9 && arg4==arg4P_9 ], cost: 1
     11: __init -> f1 : arg1'=arg1P_12, arg2'=arg2P_12, arg3'=arg3P_12, arg4'=arg4P_12, [], cost: 1

Simplified all rules, resulting in:
   Start location: __init
      0: f1 -> f2 : arg1'=arg1P_1, [], cost: 1
      1: f2 -> f3 : arg2'=arg2P_2, [], cost: 1
      2: f3 -> f4 : arg3'=arg3P_3, [], cost: 1
      7: f4 -> f5 : [ arg2<=100 && arg3<=arg1 ], cost: 1
      3: f5 -> f6 : arg4'=arg2, [], cost: 1
      4: f6 -> f7 : arg2'=arg3, [], cost: 1
      5: f7 -> f8 : arg3'=1+arg4, [], cost: 1
      6: f8 -> f9 : arg1'=-1+arg1, [], cost: 1
      8: f9 -> f4 : [], cost: 1
     11: __init -> f1 : arg1'=arg1P_12, arg2'=arg2P_12, arg3'=arg3P_12, arg4'=arg4P_12, [], cost: 1

### Simplification by acceleration and chaining ###

Eliminated locations (on linear paths):
   Start location: __init
     19: f4 -> f4 : arg1'=-1+arg1, arg2'=arg3, arg3'=1+arg2, arg4'=arg2, [ arg2<=100 && arg3<=arg1 ], cost: 6
     14: __init -> f4 : arg1'=arg1P_1, arg2'=arg2P_2, arg3'=arg3P_3, arg4'=arg4P_12, [], cost: 4

Accelerating simple loops of location 3.
   Accelerating the following rules:
     19: f4 -> f4 : arg1'=-1+arg1, arg2'=arg3, arg3'=1+arg2, arg4'=arg2, [ arg2<=100 && arg3<=arg1 ], cost: 6

   Accelerated rule 19 with backward acceleration, yielding the new rule 20.
[accelerate] Nesting with 1 inner and 1 outer candidates
   Removing the simple loops: 19.

Accelerated all simple loops using metering functions (where possible):
   Start location: __init
     20: f4 -> f4 : arg1'=-2*k+arg1, arg2'=arg2+k, arg3'=k+arg3, arg4'=-1+k+arg3, [ k>=1 && -1+arg2+k<=100 && -1+k+arg3<=2-2*k+arg1 && -1+k+arg3<=100 && arg2+k<=1-2*k+arg1 ], cost: 12*k
     14: __init -> f4 : arg1'=arg1P_1, arg2'=arg2P_2, arg3'=arg3P_3, arg4'=arg4P_12, [], cost: 4

Chained accelerated rules (with incoming rules):
   Start location: __init
     14: __init -> f4 : arg1'=arg1P_1, arg2'=arg2P_2, arg3'=arg3P_3, arg4'=arg4P_12, [], cost: 4
     21: __init -> f4 : arg1'=-2*k+arg1P_1, arg2'=arg2P_2+k, arg3'=k+arg3P_3, arg4'=-1+k+arg3P_3, [ k>=1 && -1+arg2P_2+k<=100 && -1+k+arg3P_3<=2-2*k+arg1P_1 && -1+k+arg3P_3<=100 && arg2P_2+k<=1-2*k+arg1P_1 ], cost: 4+12*k

Removed unreachable locations (and leaf rules with constant cost):
   Start location: __init
     21: __init -> f4 : arg1'=-2*k+arg1P_1, arg2'=arg2P_2+k, arg3'=k+arg3P_3, arg4'=-1+k+arg3P_3, [ k>=1 && -1+arg2P_2+k<=100 && -1+k+arg3P_3<=2-2*k+arg1P_1 && -1+k+arg3P_3<=100 && arg2P_2+k<=1-2*k+arg1P_1 ], cost: 4+12*k

### Computing asymptotic complexity ###

Fully simplified ITS problem
   Start location: __init
     21: __init -> f4 : arg1'=-2*k+arg1P_1, arg2'=arg2P_2+k, arg3'=k+arg3P_3, arg4'=-1+k+arg3P_3, [ k>=1 && -1+arg2P_2+k<=100 && -1+k+arg3P_3<=2-2*k+arg1P_1 && -1+k+arg3P_3<=100 && arg2P_2+k<=1-2*k+arg1P_1 ], cost: 4+12*k

Computing asymptotic complexity for rule 21
   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),?)