MAYBE * Step 1: WeightGap MAYBE + Considered Problem: - Strict TRS: cond(true(),x,y) -> cond(gr(x,y),p(x),s(y)) gr(0(),x) -> false() gr(s(x),0()) -> true() gr(s(x),s(y)) -> gr(x,y) p(0()) -> 0() p(s(x)) -> x - Signature: {cond/3,gr/2,p/1} / {0/0,false/0,s/1,true/0} - Obligation: innermost runtime complexity wrt. defined symbols {cond,gr,p} and constructors {0,false,s,true} + Applied Processor: WeightGap {wgDimension = 1, wgDegree = 1, wgKind = Algebraic, wgUArgs = UArgs, wgOn = WgOnAny} + Details: The weightgap principle applies using the following nonconstant growth matrix-interpretation: We apply a matrix interpretation of kind constructor based matrix interpretation: The following argument positions are considered usable: uargs(cond) = {1,2} Following symbols are considered usable: all TcT has computed the following interpretation: p(0) = [0] p(cond) = [1] x1 + [1] x2 + [3] x3 + [4] p(false) = [0] p(gr) = [8] p(p) = [1] x1 + [0] p(s) = [1] x1 + [0] p(true) = [0] Following rules are strictly oriented: gr(0(),x) = [8] > [0] = false() gr(s(x),0()) = [8] > [0] = true() Following rules are (at-least) weakly oriented: cond(true(),x,y) = [1] x + [3] y + [4] >= [1] x + [3] y + [12] = cond(gr(x,y),p(x),s(y)) gr(s(x),s(y)) = [8] >= [8] = gr(x,y) p(0()) = [0] >= [0] = 0() p(s(x)) = [1] x + [0] >= [1] x + [0] = x Further, it can be verified that all rules not oriented are covered by the weightgap condition. * Step 2: NaturalMI MAYBE + Considered Problem: - Strict TRS: cond(true(),x,y) -> cond(gr(x,y),p(x),s(y)) gr(s(x),s(y)) -> gr(x,y) p(0()) -> 0() p(s(x)) -> x - Weak TRS: gr(0(),x) -> false() gr(s(x),0()) -> true() - Signature: {cond/3,gr/2,p/1} / {0/0,false/0,s/1,true/0} - Obligation: innermost runtime complexity wrt. defined symbols {cond,gr,p} and constructors {0,false,s,true} + Applied Processor: NaturalMI {miDimension = 1, miDegree = 1, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Just any strict-rules} + Details: We apply a matrix interpretation of kind constructor based matrix interpretation: The following argument positions are considered usable: uargs(cond) = {1,2} Following symbols are considered usable: {cond,gr,p} TcT has computed the following interpretation: p(0) = [2] p(cond) = [8] x1 + [4] x2 + [0] p(false) = [0] p(gr) = [0] p(p) = [1] x1 + [0] p(s) = [1] x1 + [4] p(true) = [0] Following rules are strictly oriented: p(s(x)) = [1] x + [4] > [1] x + [0] = x Following rules are (at-least) weakly oriented: cond(true(),x,y) = [4] x + [0] >= [4] x + [0] = cond(gr(x,y),p(x),s(y)) gr(0(),x) = [0] >= [0] = false() gr(s(x),0()) = [0] >= [0] = true() gr(s(x),s(y)) = [0] >= [0] = gr(x,y) p(0()) = [2] >= [2] = 0() * Step 3: WeightGap MAYBE + Considered Problem: - Strict TRS: cond(true(),x,y) -> cond(gr(x,y),p(x),s(y)) gr(s(x),s(y)) -> gr(x,y) p(0()) -> 0() - Weak TRS: gr(0(),x) -> false() gr(s(x),0()) -> true() p(s(x)) -> x - Signature: {cond/3,gr/2,p/1} / {0/0,false/0,s/1,true/0} - Obligation: innermost runtime complexity wrt. defined symbols {cond,gr,p} and constructors {0,false,s,true} + Applied Processor: WeightGap {wgDimension = 1, wgDegree = 1, wgKind = Algebraic, wgUArgs = UArgs, wgOn = WgOnAny} + Details: The weightgap principle applies using the following nonconstant growth matrix-interpretation: We apply a matrix interpretation of kind constructor based matrix interpretation: The following argument positions are considered usable: uargs(cond) = {1,2} Following symbols are considered usable: all TcT has computed the following interpretation: p(0) = [10] p(cond) = [1] x1 + [1] x2 + [13] p(false) = [0] p(gr) = [0] p(p) = [1] x1 + [8] p(s) = [1] x1 + [8] p(true) = [0] Following rules are strictly oriented: p(0()) = [18] > [10] = 0() Following rules are (at-least) weakly oriented: cond(true(),x,y) = [1] x + [13] >= [1] x + [21] = cond(gr(x,y),p(x),s(y)) gr(0(),x) = [0] >= [0] = false() gr(s(x),0()) = [0] >= [0] = true() gr(s(x),s(y)) = [0] >= [0] = gr(x,y) p(s(x)) = [1] x + [16] >= [1] x + [0] = x Further, it can be verified that all rules not oriented are covered by the weightgap condition. * Step 4: Failure MAYBE + Considered Problem: - Strict TRS: cond(true(),x,y) -> cond(gr(x,y),p(x),s(y)) gr(s(x),s(y)) -> gr(x,y) - Weak TRS: gr(0(),x) -> false() gr(s(x),0()) -> true() p(0()) -> 0() p(s(x)) -> x - Signature: {cond/3,gr/2,p/1} / {0/0,false/0,s/1,true/0} - Obligation: innermost runtime complexity wrt. defined symbols {cond,gr,p} and constructors {0,false,s,true} + Applied Processor: EmptyProcessor + Details: The problem is still open. MAYBE