/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Problem 1: (VAR x1) (RULES a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ) Problem 1: Dependency Pairs Processor: -> Pairs: A(a(d(d(x1)))) -> B(b(x1)) A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) B(b(d(d(b(b(x1)))))) -> C(c(x1)) B(b(d(d(b(b(x1)))))) -> C(x1) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: SCC Processor: -> Pairs: A(a(d(d(x1)))) -> B(b(x1)) A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) B(b(d(d(b(b(x1)))))) -> C(c(x1)) B(b(d(d(b(b(x1)))))) -> C(x1) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(d(d(x1)))) -> B(b(x1)) A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(d(d(x1)))) -> B(b(x1)) A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X [b](X) = X [c](X) = 2.X + 2 [d](X) = 2.X + 2 [A](X) = 2.X + 2 [B](X) = 2.X + 2 Problem 1: SCC Processor: -> Pairs: A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(d(d(x1)))) -> B(x1) A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X [b](X) = X [c](X) = 2.X + 2 [d](X) = 2.X + 2 [A](X) = 2.X + 1 [B](X) = 2.X + 1 Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) A(a(x1)) -> B(x1) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 1 [b](X) = 2 [c](X) = 0 [d](X) = 0 [A](X) = 2.X + 2 [B](X) = 2.X Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) B(b(d(d(b(b(x1)))))) -> A(c(c(x1))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 1 [b](X) = 2 [c](X) = 0 [d](X) = 0 [A](X) = 2.X + 2 [B](X) = 2.X Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(b(x1)))))) A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: All rationals ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 2 [b](X) = X + 1/2 [c](X) = 2.X [d](X) = 2.X [A](X) = 1/2.X + 1 [B](X) = 1/2.X + 1/2 Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(b(b(b(x1))))) A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: All rationals ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 2 [b](X) = X + 1/2 [c](X) = 2.X + 1 [d](X) = 2.X + 1 [A](X) = 2.X + 2 [B](X) = 2.X Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(b(b(x1)))) A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: All rationals ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 2 [b](X) = X + 1/2 [c](X) = 2.X + 2 [d](X) = 2.X + 2 [A](X) = 1/2.X + 1 [B](X) = 1/2.X Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(b(x1))) A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: All rationals ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 2 [b](X) = X + 1/2 [c](X) = 2.X + 1 [d](X) = 2.X + 1 [A](X) = 2.X + 2 [B](X) = 2.X + 2 Problem 1: SCC Processor: -> Pairs: A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) ->->-> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) Problem 1: Reduction Pair Processor: -> Pairs: A(a(x1)) -> B(b(x1)) B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) -> Usable rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Interpretation type: Linear ->Coefficients: All rationals ->Dimension: 1 ->Bound: 2 ->Interpretation: [a](X) = X + 2 [b](X) = X + 1/2 [c](X) = 2.X [d](X) = 2.X [A](X) = 1/2.X + 2 [B](X) = 1/2.X + 2 Problem 1: SCC Processor: -> Pairs: B(b(d(d(b(b(x1)))))) -> A(a(c(c(x1)))) -> Rules: a(a(d(d(x1)))) -> d(d(b(b(x1)))) a(a(x1)) -> b(b(b(b(b(b(x1)))))) b(b(d(d(b(b(x1)))))) -> a(a(c(c(x1)))) c(c(x1)) -> d(d(x1)) ->Strongly Connected Components: There is no strongly connected component The problem is finite.