We consider the following Problem: Strict Trs: { -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , min(s(x), s(y)) -> s(min(x, y)) , twice(0()) -> 0() , twice(s(x)) -> s(s(twice(x))) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y))))} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We consider the following Problem: Strict Trs: { -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , min(s(x), s(y)) -> s(min(x, y)) , twice(0()) -> 0() , twice(s(x)) -> s(s(twice(x))) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y))))} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: The weightgap principle applies, where following rules are oriented strictly: TRS Component: { -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} Interpretation of nonconstant growth: ------------------------------------- The following argument positions are usable: Uargs(-) = {2}, Uargs(s) = {1}, Uargs(min) = {}, Uargs(twice) = {1}, Uargs(f) = {1, 2} We have the following EDA-non-satisfying and IDA(1)-non-satisfying matrix interpretation: Interpretation Functions: -(x1, x2) = [1 0] x1 + [1 0] x2 + [1] [1 0] [0 0] [1] 0() = [0] [0] s(x1) = [1 0] x1 + [2] [0 0] [1] min(x1, x2) = [0 0] x1 + [0 0] x2 + [1] [0 0] [0 0] [1] twice(x1) = [1 0] x1 + [3] [0 0] [1] f(x1, x2) = [1 0] x1 + [1 0] x2 + [1] [0 0] [0 0] [1] The strictly oriented rules are moved into the weak component. We consider the following Problem: Strict Trs: { -(x, 0()) -> x , min(s(x), s(y)) -> s(min(x, y)) , twice(s(x)) -> s(s(twice(x))) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y))))} Weak Trs: { -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: The weightgap principle applies, where following rules are oriented strictly: TRS Component: {-(x, 0()) -> x} Interpretation of nonconstant growth: ------------------------------------- The following argument positions are usable: Uargs(-) = {2}, Uargs(s) = {1}, Uargs(min) = {}, Uargs(twice) = {1}, Uargs(f) = {1, 2} We have the following EDA-non-satisfying and IDA(1)-non-satisfying matrix interpretation: Interpretation Functions: -(x1, x2) = [1 0] x1 + [1 0] x2 + [1] [0 1] [0 1] [1] 0() = [0] [0] s(x1) = [1 0] x1 + [0] [0 1] [0] min(x1, x2) = [0 0] x1 + [0 0] x2 + [1] [1 0] [1 0] [1] twice(x1) = [1 0] x1 + [1] [0 0] [1] f(x1, x2) = [1 0] x1 + [1 0] x2 + [1] [0 1] [0 0] [1] The strictly oriented rules are moved into the weak component. We consider the following Problem: Strict Trs: { min(s(x), s(y)) -> s(min(x, y)) , twice(s(x)) -> s(s(twice(x))) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y))))} Weak Trs: { -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: The weightgap principle applies, where following rules are oriented strictly: TRS Component: { f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y))))} Interpretation of nonconstant growth: ------------------------------------- The following argument positions are usable: Uargs(-) = {2}, Uargs(s) = {1}, Uargs(min) = {}, Uargs(twice) = {1}, Uargs(f) = {1, 2} We have the following EDA-non-satisfying and IDA(1)-non-satisfying matrix interpretation: Interpretation Functions: -(x1, x2) = [1 0] x1 + [1 0] x2 + [0] [0 1] [0 0] [1] 0() = [0] [0] s(x1) = [1 0] x1 + [3] [0 1] [2] min(x1, x2) = [0 0] x1 + [0 0] x2 + [1] [1 0] [0 0] [1] twice(x1) = [1 0] x1 + [0] [0 0] [3] f(x1, x2) = [1 0] x1 + [1 0] x2 + [0] [0 0] [0 0] [1] The strictly oriented rules are moved into the weak component. We consider the following Problem: Strict Trs: { min(s(x), s(y)) -> s(min(x, y)) , twice(s(x)) -> s(s(twice(x)))} Weak Trs: { f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y)))) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: The weightgap principle applies, where following rules are oriented strictly: TRS Component: {min(s(x), s(y)) -> s(min(x, y))} Interpretation of nonconstant growth: ------------------------------------- The following argument positions are usable: Uargs(-) = {2}, Uargs(s) = {1}, Uargs(min) = {}, Uargs(twice) = {1}, Uargs(f) = {1, 2} We have the following EDA-non-satisfying and IDA(1)-non-satisfying matrix interpretation: Interpretation Functions: -(x1, x2) = [1 0] x1 + [1 0] x2 + [0] [0 1] [0 0] [0] 0() = [0] [0] s(x1) = [1 0] x1 + [0] [0 1] [1] min(x1, x2) = [0 0] x1 + [0 1] x2 + [0] [0 0] [0 1] [0] twice(x1) = [1 0] x1 + [0] [0 0] [0] f(x1, x2) = [1 0] x1 + [1 2] x2 + [1] [0 0] [0 0] [1] The strictly oriented rules are moved into the weak component. We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y)))) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y)))) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We have computed the following dependency pairs Strict DPs: {twice^#(s(x)) -> twice^#(x)} Weak DPs: { min^#(s(x), s(y)) -> min^#(x, y) , f^#(s(x), s(y)) -> f^#(-(y, min(x, y)), s(twice(min(x, y)))) , f^#(s(x), s(y)) -> f^#(-(x, min(x, y)), s(twice(min(x, y)))) , -^#(x, 0()) -> c_5() , -^#(s(x), s(y)) -> -^#(x, y) , min^#(x, 0()) -> c_7() , min^#(0(), y) -> c_8() , twice^#(0()) -> c_9()} We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: { min^#(s(x), s(y)) -> min^#(x, y) , f^#(s(x), s(y)) -> f^#(-(y, min(x, y)), s(twice(min(x, y)))) , f^#(s(x), s(y)) -> f^#(-(x, min(x, y)), s(twice(min(x, y)))) , -^#(x, 0()) -> c_5() , -^#(s(x), s(y)) -> -^#(x, y) , min^#(x, 0()) -> c_7() , min^#(0(), y) -> c_8() , twice^#(0()) -> c_9()} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))) , f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y)))) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We replace strict/weak-rules by the corresponding usable rules: Strict Usable Rules: {twice(s(x)) -> s(s(twice(x)))} Weak Usable Rules: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: { min^#(s(x), s(y)) -> min^#(x, y) , f^#(s(x), s(y)) -> f^#(-(y, min(x, y)), s(twice(min(x, y)))) , f^#(s(x), s(y)) -> f^#(-(x, min(x, y)), s(twice(min(x, y)))) , -^#(x, 0()) -> c_5() , -^#(s(x), s(y)) -> -^#(x, y) , min^#(x, 0()) -> c_7() , min^#(0(), y) -> c_8() , twice^#(0()) -> c_9()} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: { min^#(s(x), s(y)) -> min^#(x, y) , f^#(s(x), s(y)) -> f^#(-(y, min(x, y)), s(twice(min(x, y)))) , f^#(s(x), s(y)) -> f^#(-(x, min(x, y)), s(twice(min(x, y)))) , -^#(x, 0()) -> c_5() , -^#(s(x), s(y)) -> -^#(x, y) , min^#(x, 0()) -> c_7() , min^#(0(), y) -> c_8() , twice^#(0()) -> c_9()} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We use following congruence DG for path analysis ->7:{1} [ YES(?,O(n^1)) ] | `->8:{9} [ YES(O(1),O(1)) ] ->4:{2} [ subsumed ] | |->5:{7} [ YES(O(1),O(1)) ] | `->6:{8} [ YES(O(1),O(1)) ] ->3:{3,4} [ YES(O(1),O(1)) ] ->1:{6} [ subsumed ] | `->2:{5} [ YES(O(1),O(1)) ] Here dependency-pairs are as follows: Strict DPs: {1: twice^#(s(x)) -> twice^#(x)} WeakDPs DPs: { 2: min^#(s(x), s(y)) -> min^#(x, y) , 3: f^#(s(x), s(y)) -> f^#(-(y, min(x, y)), s(twice(min(x, y)))) , 4: f^#(s(x), s(y)) -> f^#(-(x, min(x, y)), s(twice(min(x, y)))) , 5: -^#(x, 0()) -> c_5() , 6: -^#(s(x), s(y)) -> -^#(x, y) , 7: min^#(x, 0()) -> c_7() , 8: min^#(0(), y) -> c_8() , 9: twice^#(0()) -> c_9()} * Path 7:{1}: YES(?,O(n^1)) ------------------------- We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: No rule is usable. We consider the following Problem: Strict DPs: {twice^#(s(x)) -> twice^#(x)} StartTerms: basic terms Strategy: innermost Certificate: YES(?,O(n^1)) Proof: The problem is match-bounded by 1. The enriched problem is compatible with the following automaton: { s_0(2) -> 2 , twice^#_0(2) -> 1 , twice^#_1(2) -> 1} * Path 7:{1}->8:{9}: YES(O(1),O(1)) --------------------------------- We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {twice^#(s(x)) -> twice^#(x)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {twice^#(s(x)) -> twice^#(x)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {twice^#(s(x)) -> twice^#(x)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: No rule is usable. We consider the following Problem: Weak DPs: {twice^#(s(x)) -> twice^#(x)} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: Empty rules are trivially bounded * Path 4:{2}: subsumed -------------------- This path is subsumed by the proof of paths 4:{2}->6:{8}, 4:{2}->5:{7}. * Path 4:{2}->5:{7}: YES(O(1),O(1)) --------------------------------- We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: No rule is usable. We consider the following Problem: Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: Empty rules are trivially bounded * Path 4:{2}->6:{8}: YES(O(1),O(1)) --------------------------------- We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: No rule is usable. We consider the following Problem: Weak DPs: {min^#(s(x), s(y)) -> min^#(x, y)} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: Empty rules are trivially bounded * Path 3:{3,4}: YES(O(1),O(1)) ---------------------------- We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: No rule is usable. We consider the following Problem: StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: Empty rules are trivially bounded * Path 1:{6}: subsumed -------------------- This path is subsumed by the proof of paths 1:{6}->2:{5}. * Path 1:{6}->2:{5}: YES(O(1),O(1)) --------------------------------- We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {-^#(s(x), s(y)) -> -^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {-^#(s(x), s(y)) -> -^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: We consider the following Problem: Strict Trs: {twice(s(x)) -> s(s(twice(x)))} Weak DPs: {-^#(s(x), s(y)) -> -^#(x, y)} Weak Trs: { min(s(x), s(y)) -> s(min(x, y)) , -(x, 0()) -> x , -(s(x), s(y)) -> -(x, y) , min(x, 0()) -> 0() , min(0(), y) -> 0() , twice(0()) -> 0()} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: No rule is usable. We consider the following Problem: Weak DPs: {-^#(s(x), s(y)) -> -^#(x, y)} StartTerms: basic terms Strategy: innermost Certificate: YES(O(1),O(1)) Proof: Empty rules are trivially bounded Hurray, we answered YES(?,O(n^1))