/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Problem 1: (VAR x y z) (RULES div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ) Problem 1: Dependency Pairs Processor: -> Pairs: DIV_ACTIVE(s(x),s(y)) -> GE_ACTIVE(x,y) DIV_ACTIVE(s(x),s(y)) -> IF_ACTIVE(ge_active(x,y),s(div(minus(x,y),s(y))),0) GE_ACTIVE(s(x),s(y)) -> GE_ACTIVE(x,y) IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> DIV_ACTIVE(mark(x),y) MARK(div(x,y)) -> MARK(x) MARK(ge(x,y)) -> GE_ACTIVE(x,y) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(minus(x,y)) -> MINUS_ACTIVE(x,y) MARK(s(x)) -> MARK(x) MINUS_ACTIVE(s(x),s(y)) -> MINUS_ACTIVE(x,y) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) Problem 1: SCC Processor: -> Pairs: DIV_ACTIVE(s(x),s(y)) -> GE_ACTIVE(x,y) DIV_ACTIVE(s(x),s(y)) -> IF_ACTIVE(ge_active(x,y),s(div(minus(x,y),s(y))),0) GE_ACTIVE(s(x),s(y)) -> GE_ACTIVE(x,y) IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> DIV_ACTIVE(mark(x),y) MARK(div(x,y)) -> MARK(x) MARK(ge(x,y)) -> GE_ACTIVE(x,y) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(minus(x,y)) -> MINUS_ACTIVE(x,y) MARK(s(x)) -> MARK(x) MINUS_ACTIVE(s(x),s(y)) -> MINUS_ACTIVE(x,y) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: MINUS_ACTIVE(s(x),s(y)) -> MINUS_ACTIVE(x,y) ->->-> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->->Cycle: ->->-> Pairs: GE_ACTIVE(s(x),s(y)) -> GE_ACTIVE(x,y) ->->-> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->->Cycle: ->->-> Pairs: DIV_ACTIVE(s(x),s(y)) -> IF_ACTIVE(ge_active(x,y),s(div(minus(x,y),s(y))),0) IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> DIV_ACTIVE(mark(x),y) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) ->->-> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) The problem is decomposed in 3 subproblems. Problem 1.1: Subterm Processor: -> Pairs: MINUS_ACTIVE(s(x),s(y)) -> MINUS_ACTIVE(x,y) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Projection: pi(MINUS_ACTIVE) = 1 Problem 1.1: SCC Processor: -> Pairs: Empty -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.2: Subterm Processor: -> Pairs: GE_ACTIVE(s(x),s(y)) -> GE_ACTIVE(x,y) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Projection: pi(GE_ACTIVE) = 1 Problem 1.2: SCC Processor: -> Pairs: Empty -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.3: Reduction Pair Processor: -> Pairs: DIV_ACTIVE(s(x),s(y)) -> IF_ACTIVE(ge_active(x,y),s(div(minus(x,y),s(y))),0) IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> DIV_ACTIVE(mark(x),y) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) -> Usable rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [div_active](X1,X2) = 2.X1 [ge_active](X1,X2) = X1 [if_active](X1,X2,X3) = 2.X1 + 2.X2 + 2.X3 [mark](X) = X [minus_active](X1,X2) = 0 [0] = 0 [div](X1,X2) = 2.X1 [false] = 0 [ge](X1,X2) = X1 [if](X1,X2,X3) = 2.X1 + 2.X2 + 2.X3 [minus](X1,X2) = 0 [s](X) = 2.X + 2 [true] = 0 [DIV_ACTIVE](X1,X2) = 2.X1 + 2 [IF_ACTIVE](X1,X2,X3) = 2.X1 + X2 + 2.X3 + 2 [MARK](X) = X + 2 Problem 1.3: SCC Processor: -> Pairs: IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> DIV_ACTIVE(mark(x),y) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) ->->-> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) Problem 1.3: Reduction Pair Processor: -> Pairs: IF_ACTIVE(false,x,y) -> MARK(y) IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) -> Usable rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [div_active](X1,X2) = 2.X1 + 2.X2 + 2 [ge_active](X1,X2) = 1 [if_active](X1,X2,X3) = X1 + X2 + 2.X3 + 1 [mark](X) = X [minus_active](X1,X2) = 0 [0] = 0 [div](X1,X2) = 2.X1 + 2.X2 + 2 [false] = 1 [ge](X1,X2) = 1 [if](X1,X2,X3) = X1 + X2 + 2.X3 + 1 [minus](X1,X2) = 0 [s](X) = X + 2 [true] = 1 [IF_ACTIVE](X1,X2,X3) = 2.X1 + 2.X2 + 2.X3 + 2 [MARK](X) = 2.X + 2 Problem 1.3: SCC Processor: -> Pairs: IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) ->->-> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) Problem 1.3: Subterm Processor: -> Pairs: IF_ACTIVE(true,x,y) -> MARK(x) MARK(div(x,y)) -> MARK(x) MARK(if(x,y,z)) -> IF_ACTIVE(mark(x),y,z) MARK(if(x,y,z)) -> MARK(x) MARK(s(x)) -> MARK(x) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Projection: pi(IF_ACTIVE) = 2 pi(MARK) = 1 Problem 1.3: SCC Processor: -> Pairs: IF_ACTIVE(true,x,y) -> MARK(x) -> Rules: div_active(0,s(y)) -> 0 div_active(s(x),s(y)) -> if_active(ge_active(x,y),s(div(minus(x,y),s(y))),0) div_active(x,y) -> div(x,y) ge_active(0,s(y)) -> false ge_active(s(x),s(y)) -> ge_active(x,y) ge_active(x,0) -> true ge_active(x,y) -> ge(x,y) if_active(false,x,y) -> mark(y) if_active(true,x,y) -> mark(x) if_active(x,y,z) -> if(x,y,z) mark(0) -> 0 mark(div(x,y)) -> div_active(mark(x),y) mark(ge(x,y)) -> ge_active(x,y) mark(if(x,y,z)) -> if_active(mark(x),y,z) mark(minus(x,y)) -> minus_active(x,y) mark(s(x)) -> s(mark(x)) minus_active(0,y) -> 0 minus_active(s(x),s(y)) -> minus_active(x,y) minus_active(x,y) -> minus(x,y) ->Strongly Connected Components: There is no strongly connected component The problem is finite.