/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Problem 1: (VAR l x y) (RULES *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ) Problem 1: Dependency Pairs Processor: -> Pairs: *#(0(x),y) -> *#(x,y) *#(0(x),y) -> 0#(*(x,y)) *#(1(x),y) -> *#(x,y) *#(1(x),y) -> +#(0(*(x,y)),y) *#(1(x),y) -> 0#(*(x,y)) +#(0(x),0(y)) -> +#(x,y) +#(0(x),0(y)) -> 0#(+(x,y)) +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) +#(1(x),1(y)) -> 0#(+(+(x,y),1(#))) PROD(cons(x,l)) -> *#(x,prod(l)) PROD(cons(x,l)) -> PROD(l) SUM(cons(x,l)) -> +#(x,sum(l)) SUM(cons(x,l)) -> SUM(l) SUM(nil) -> 0#(#) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) Problem 1: SCC Processor: -> Pairs: *#(0(x),y) -> *#(x,y) *#(0(x),y) -> 0#(*(x,y)) *#(1(x),y) -> *#(x,y) *#(1(x),y) -> +#(0(*(x,y)),y) *#(1(x),y) -> 0#(*(x,y)) +#(0(x),0(y)) -> +#(x,y) +#(0(x),0(y)) -> 0#(+(x,y)) +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) +#(1(x),1(y)) -> 0#(+(+(x,y),1(#))) PROD(cons(x,l)) -> *#(x,prod(l)) PROD(cons(x,l)) -> PROD(l) SUM(cons(x,l)) -> +#(x,sum(l)) SUM(cons(x,l)) -> SUM(l) SUM(nil) -> 0#(#) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: +#(0(x),0(y)) -> +#(x,y) +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->->Cycle: ->->-> Pairs: SUM(cons(x,l)) -> SUM(l) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->->Cycle: ->->-> Pairs: *#(0(x),y) -> *#(x,y) *#(1(x),y) -> *#(x,y) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->->Cycle: ->->-> Pairs: PROD(cons(x,l)) -> PROD(l) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) The problem is decomposed in 4 subproblems. Problem 1.1: Reduction Pair Processor: -> Pairs: +#(0(x),0(y)) -> +#(x,y) +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) -> Usable rules: +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [+](X1,X2) = X1 + X2 + 1 [0](X) = X + 1 [#] = 0 [1](X) = X + 2 [+#](X1,X2) = 2.X1 + 2.X2 Problem 1.1: SCC Processor: -> Pairs: +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) Problem 1.1: Reduction Pair Processor: -> Pairs: +#(0(x),1(y)) -> +#(x,y) +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) -> Usable rules: +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [+](X1,X2) = X1 + 2.X2 [0](X) = X [#] = 1 [1](X) = X + 2 [+#](X1,X2) = X1 + 2.X2 Problem 1.1: SCC Processor: -> Pairs: +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) Problem 1.1: Reduction Pair Processor: -> Pairs: +#(1(x),0(y)) -> +#(x,y) +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) -> Usable rules: +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [+](X1,X2) = X1 + X2 [0](X) = X + 1 [#] = 0 [1](X) = X + 1 [+#](X1,X2) = 2.X1 + 2.X2 Problem 1.1: SCC Processor: -> Pairs: +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) Problem 1.1: Reduction Pair Processor: -> Pairs: +#(1(x),1(y)) -> +#(+(x,y),1(#)) +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) -> Usable rules: +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [+](X1,X2) = X1 + X2 [0](X) = 2.X [#] = 0 [1](X) = 2.X + 2 [+#](X1,X2) = 2.X1 + 2.X2 Problem 1.1: SCC Processor: -> Pairs: +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: +#(1(x),1(y)) -> +#(x,y) ->->-> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) Problem 1.1: Subterm Processor: -> Pairs: +#(1(x),1(y)) -> +#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Projection: pi(+#) = 1 Problem 1.1: SCC Processor: -> Pairs: Empty -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.2: Subterm Processor: -> Pairs: SUM(cons(x,l)) -> SUM(l) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Projection: pi(SUM) = 1 Problem 1.2: SCC Processor: -> Pairs: Empty -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.3: Subterm Processor: -> Pairs: *#(0(x),y) -> *#(x,y) *#(1(x),y) -> *#(x,y) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Projection: pi(*#) = 1 Problem 1.3: SCC Processor: -> Pairs: Empty -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.4: Subterm Processor: -> Pairs: PROD(cons(x,l)) -> PROD(l) -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Projection: pi(PROD) = 1 Problem 1.4: SCC Processor: -> Pairs: Empty -> Rules: *(0(x),y) -> 0(*(x,y)) *(#,x) -> # *(1(x),y) -> +(0(*(x,y)),y) +(0(x),0(y)) -> 0(+(x,y)) +(0(x),1(y)) -> 1(+(x,y)) +(#,x) -> x +(1(x),0(y)) -> 1(+(x,y)) +(1(x),1(y)) -> 0(+(+(x,y),1(#))) +(x,#) -> x 0(#) -> # prod(cons(x,l)) -> *(x,prod(l)) prod(nil) -> 1(#) sum(cons(x,l)) -> +(x,sum(l)) sum(nil) -> 0(#) ->Strongly Connected Components: There is no strongly connected component The problem is finite.