NO ### Pre-processing the ITS problem ### Initial linear ITS problem Start location: [0] 0: [0] -> [1] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 ], cost: 1 1: [1] -> [2] : [ n_number>=r_number ], cost: 1 2: [1] -> [3] : [ n_number [4] : [ nCr>=1 ], cost: 1 6: [2] -> [6] : [ numerator<1 ], cost: 1 4: [4] -> [5] : numerator'=nmul*numerator, denominator'=dmul*denominator, nmul'=-1+nmul, dmul'=-1+dmul, [], cost: 1 5: [5] -> [2] : [ 1>=1 ], cost: 1 7: [6] -> [3] : nCr'=numerator*denominator^(-1), [], cost: 1 Checking for constant complexity: The following rule is satisfiable with cost >= 1, yielding constant complexity: 0: [0] -> [1] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 ], cost: 1 Removed unreachable and leaf rules: Start location: [0] 0: [0] -> [1] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 ], cost: 1 1: [1] -> [2] : [ n_number>=r_number ], cost: 1 3: [2] -> [4] : [ nCr>=1 ], cost: 1 4: [4] -> [5] : numerator'=nmul*numerator, denominator'=dmul*denominator, nmul'=-1+nmul, dmul'=-1+dmul, [], cost: 1 5: [5] -> [2] : [ 1>=1 ], cost: 1 Simplified all rules, resulting in: Start location: [0] 0: [0] -> [1] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 ], cost: 1 1: [1] -> [2] : [ n_number>=r_number ], cost: 1 3: [2] -> [4] : [ nCr>=1 ], cost: 1 4: [4] -> [5] : numerator'=nmul*numerator, denominator'=dmul*denominator, nmul'=-1+nmul, dmul'=-1+dmul, [], cost: 1 5: [5] -> [2] : [], cost: 1 ### Simplification by acceleration and chaining ### Eliminated locations (on linear paths): Start location: [0] 8: [0] -> [2] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 && nondet>=r_number ], cost: 2 10: [2] -> [2] : numerator'=nmul*numerator, denominator'=dmul*denominator, nmul'=-1+nmul, dmul'=-1+dmul, [ nCr>=1 ], cost: 3 Accelerating simple loops of location 2. Accelerating the following rules: 10: [2] -> [2] : numerator'=nmul*numerator, denominator'=dmul*denominator, nmul'=-1+nmul, dmul'=-1+dmul, [ nCr>=1 ], cost: 3 Accelerated rule 10 with non-termination, yielding the new rule 11. [accelerate] Nesting with 0 inner and 0 outer candidates Removing the simple loops: 10. Accelerated all simple loops using metering functions (where possible): Start location: [0] 8: [0] -> [2] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 && nondet>=r_number ], cost: 2 11: [2] -> [7] : [ nCr>=1 ], cost: NONTERM Chained accelerated rules (with incoming rules): Start location: [0] 8: [0] -> [2] : n_number'=nondet, numerator'=1, denominator'=1, nmul'=n_number, dmul'=r_number, nCr'=1, [ n_number>=1 && nondet>=r_number ], cost: 2 12: [0] -> [7] : [ n_number>=1 ], cost: NONTERM Removed unreachable locations (and leaf rules with constant cost): Start location: [0] 12: [0] -> [7] : [ n_number>=1 ], cost: NONTERM ### Computing asymptotic complexity ### Fully simplified ITS problem Start location: [0] 12: [0] -> [7] : [ n_number>=1 ], cost: NONTERM Computing asymptotic complexity for rule 12 Guard is satisfiable, yielding nontermination Resulting cost NONTERM has complexity: Nonterm Found new complexity Nonterm. Obtained the following overall complexity (w.r.t. the length of the input n): Complexity: Nonterm Cpx degree: Nonterm Solved cost: NONTERM Rule cost: NONTERM Rule guard: [ n_number>=1 ] NO