WORST_CASE(Omega(1),?) ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: l6 0: l0 -> l1 : i57^0'=i57^post_1, i911^0'=i911^post_1, tmp^0'=tmp^post_1, x35^0'=x35^post_1, x79^0'=x79^post_1, [ i57^0==i57^post_1 && i911^0==i911^post_1 && tmp^0==tmp^post_1 && x35^0==x35^post_1 && x79^0==x79^post_1 ], cost: 1 4: l1 -> l4 : i57^0'=i57^post_5, i911^0'=i911^post_5, tmp^0'=tmp^post_5, x35^0'=x35^post_5, x79^0'=x79^post_5, [ 10<=i57^0 && x79^post_5==x79^post_5 && i911^post_5==0 && i57^0==i57^post_5 && tmp^0==tmp^post_5 && x35^0==x35^post_5 ], cost: 1 5: l1 -> l0 : i57^0'=i57^post_6, i911^0'=i911^post_6, tmp^0'=tmp^post_6, x35^0'=x35^post_6, x79^0'=x79^post_6, [ 1+i57^0<=10 && i57^post_6==1+i57^0 && i911^0==i911^post_6 && tmp^0==tmp^post_6 && x35^0==x35^post_6 && x79^0==x79^post_6 ], cost: 1 1: l2 -> l3 : i57^0'=i57^post_2, i911^0'=i911^post_2, tmp^0'=tmp^post_2, x35^0'=x35^post_2, x79^0'=x79^post_2, [ 10<=i911^0 && i57^0==i57^post_2 && i911^0==i911^post_2 && tmp^0==tmp^post_2 && x35^0==x35^post_2 && x79^0==x79^post_2 ], cost: 1 2: l2 -> l4 : i57^0'=i57^post_3, i911^0'=i911^post_3, tmp^0'=tmp^post_3, x35^0'=x35^post_3, x79^0'=x79^post_3, [ 1+i911^0<=10 && i911^post_3==1+i911^0 && i57^0==i57^post_3 && tmp^0==tmp^post_3 && x35^0==x35^post_3 && x79^0==x79^post_3 ], cost: 1 3: l4 -> l2 : i57^0'=i57^post_4, i911^0'=i911^post_4, tmp^0'=tmp^post_4, x35^0'=x35^post_4, x79^0'=x79^post_4, [ i57^0==i57^post_4 && i911^0==i911^post_4 && tmp^0==tmp^post_4 && x35^0==x35^post_4 && x79^0==x79^post_4 ], cost: 1 6: l5 -> l0 : i57^0'=i57^post_7, i911^0'=i911^post_7, tmp^0'=tmp^post_7, x35^0'=x35^post_7, x79^0'=x79^post_7, [ tmp^post_7==tmp^post_7 && x35^post_7==x35^post_7 && i57^post_7==0 && i911^0==i911^post_7 && x79^0==x79^post_7 ], cost: 1 7: l6 -> l5 : i57^0'=i57^post_8, i911^0'=i911^post_8, tmp^0'=tmp^post_8, x35^0'=x35^post_8, x79^0'=x79^post_8, [ i57^0==i57^post_8 && i911^0==i911^post_8 && tmp^0==tmp^post_8 && x35^0==x35^post_8 && x79^0==x79^post_8 ], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 7: l6 -> l5 : i57^0'=i57^post_8, i911^0'=i911^post_8, tmp^0'=tmp^post_8, x35^0'=x35^post_8, x79^0'=x79^post_8, [ i57^0==i57^post_8 && i911^0==i911^post_8 && tmp^0==tmp^post_8 && x35^0==x35^post_8 && x79^0==x79^post_8 ], cost: 1 Removed unreachable and leaf rules: Start location: l6 0: l0 -> l1 : i57^0'=i57^post_1, i911^0'=i911^post_1, tmp^0'=tmp^post_1, x35^0'=x35^post_1, x79^0'=x79^post_1, [ i57^0==i57^post_1 && i911^0==i911^post_1 && tmp^0==tmp^post_1 && x35^0==x35^post_1 && x79^0==x79^post_1 ], cost: 1 4: l1 -> l4 : i57^0'=i57^post_5, i911^0'=i911^post_5, tmp^0'=tmp^post_5, x35^0'=x35^post_5, x79^0'=x79^post_5, [ 10<=i57^0 && x79^post_5==x79^post_5 && i911^post_5==0 && i57^0==i57^post_5 && tmp^0==tmp^post_5 && x35^0==x35^post_5 ], cost: 1 5: l1 -> l0 : i57^0'=i57^post_6, i911^0'=i911^post_6, tmp^0'=tmp^post_6, x35^0'=x35^post_6, x79^0'=x79^post_6, [ 1+i57^0<=10 && i57^post_6==1+i57^0 && i911^0==i911^post_6 && tmp^0==tmp^post_6 && x35^0==x35^post_6 && x79^0==x79^post_6 ], cost: 1 2: l2 -> l4 : i57^0'=i57^post_3, i911^0'=i911^post_3, tmp^0'=tmp^post_3, x35^0'=x35^post_3, x79^0'=x79^post_3, [ 1+i911^0<=10 && i911^post_3==1+i911^0 && i57^0==i57^post_3 && tmp^0==tmp^post_3 && x35^0==x35^post_3 && x79^0==x79^post_3 ], cost: 1 3: l4 -> l2 : i57^0'=i57^post_4, i911^0'=i911^post_4, tmp^0'=tmp^post_4, x35^0'=x35^post_4, x79^0'=x79^post_4, [ i57^0==i57^post_4 && i911^0==i911^post_4 && tmp^0==tmp^post_4 && x35^0==x35^post_4 && x79^0==x79^post_4 ], cost: 1 6: l5 -> l0 : i57^0'=i57^post_7, i911^0'=i911^post_7, tmp^0'=tmp^post_7, x35^0'=x35^post_7, x79^0'=x79^post_7, [ tmp^post_7==tmp^post_7 && x35^post_7==x35^post_7 && i57^post_7==0 && i911^0==i911^post_7 && x79^0==x79^post_7 ], cost: 1 7: l6 -> l5 : i57^0'=i57^post_8, i911^0'=i911^post_8, tmp^0'=tmp^post_8, x35^0'=x35^post_8, x79^0'=x79^post_8, [ i57^0==i57^post_8 && i911^0==i911^post_8 && tmp^0==tmp^post_8 && x35^0==x35^post_8 && x79^0==x79^post_8 ], cost: 1 Simplified all rules, resulting in: Start location: l6 0: l0 -> l1 : [], cost: 1 4: l1 -> l4 : i911^0'=0, x79^0'=x79^post_5, [ 10<=i57^0 ], cost: 1 5: l1 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 1 2: l2 -> l4 : i911^0'=1+i911^0, [ 1+i911^0<=10 ], cost: 1 3: l4 -> l2 : [], cost: 1 6: l5 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 1 7: l6 -> l5 : [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: l6 0: l0 -> l1 : [], cost: 1 4: l1 -> l4 : i911^0'=0, x79^0'=x79^post_5, [ 10<=i57^0 ], cost: 1 5: l1 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 1 9: l4 -> l4 : i911^0'=1+i911^0, [ 1+i911^0<=10 ], cost: 2 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 Accelerating simple loops of location 4. Accelerating the following rules: 9: l4 -> l4 : i911^0'=1+i911^0, [ 1+i911^0<=10 ], cost: 2 Accelerated rule 9 with backward acceleration, yielding the new rule 10. [accelerate] Nesting with 1 inner and 1 outer candidates Removing the simple loops: 9. Accelerated all simple loops using metering functions (where possible): Start location: l6 0: l0 -> l1 : [], cost: 1 4: l1 -> l4 : i911^0'=0, x79^0'=x79^post_5, [ 10<=i57^0 ], cost: 1 5: l1 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 1 10: l4 -> l4 : i911^0'=10, [ 10-i911^0>=0 ], cost: 20-2*i911^0 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: l6 0: l0 -> l1 : [], cost: 1 4: l1 -> l4 : i911^0'=0, x79^0'=x79^post_5, [ 10<=i57^0 ], cost: 1 5: l1 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 1 11: l1 -> l4 : i911^0'=10, x79^0'=x79^post_5, [ 10<=i57^0 ], cost: 21 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 Removed unreachable locations (and leaf rules with constant cost): Start location: l6 0: l0 -> l1 : [], cost: 1 5: l1 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 1 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 Eliminated locations (on linear paths): Start location: l6 12: l0 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 2 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 Accelerating simple loops of location 0. Accelerating the following rules: 12: l0 -> l0 : i57^0'=1+i57^0, [ 1+i57^0<=10 ], cost: 2 Accelerated rule 12 with backward acceleration, yielding the new rule 13. [accelerate] Nesting with 1 inner and 1 outer candidates Removing the simple loops: 12. Accelerated all simple loops using metering functions (where possible): Start location: l6 13: l0 -> l0 : i57^0'=10, [ 10-i57^0>=0 ], cost: 20-2*i57^0 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 Chained accelerated rules (with incoming rules): Start location: l6 8: l6 -> l0 : i57^0'=0, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 2 14: l6 -> l0 : i57^0'=10, tmp^0'=tmp^post_7, x35^0'=x35^post_7, [], cost: 22 Removed unreachable locations (and leaf rules with constant cost): Start location: l6 ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: l6 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: [ i57^0==i57^post_8 && i911^0==i911^post_8 && tmp^0==tmp^post_8 && x35^0==x35^post_8 && x79^0==x79^post_8 ] WORST_CASE(Omega(1),?)