Input TRS: 1: minus(x,0()) -> x 2: minus(s(x),s(y)) -> minus(x,y) 3: double(0()) -> 0() 4: double(s(x)) -> s(s(double(x))) 5: plus(s(x),s(y)) -> s(s(plus(if(gt(x,y),x,y),if(not(gt(x,y)),id(x),id(y))))) 6: plus(s(x),x) -> plus(if(gt(x,x),id(x),id(x)),s(x)) 7: plus(zero(),y) -> y 8: plus(id(x),s(y)) -> s(plus(x,if(gt(s(y),y),y,s(y)))) 9: id(x) -> x 10: if(true(),x,y) -> x 11: if(false(),x,y) -> y 12: not(x) -> if(x,false(),true()) 13: gt(s(x),zero()) -> true() 14: gt(zero(),y) -> false() 15: gt(s(x),s(y)) -> gt(x,y) Number of strict rules: 15 Direct Order(PosReal,>,Poly) ... failed. Freezing gt 1: minus(x,0()) -> x 2: minus(s(x),s(y)) -> minus(x,y) 3: double(0()) -> 0() 4: double(s(x)) -> s(s(double(x))) 5: plus(s(x),s(y)) -> s(s(plus(if(gt(x,y),x,y),if(not(gt(x,y)),id(x),id(y))))) 6: plus(s(x),x) -> plus(if(gt(x,x),id(x),id(x)),s(x)) 7: plus(zero(),y) -> y 8: plus(id(x),s(y)) -> s(plus(x,if(gt❆1_s(y,y),y,s(y)))) 9: id(x) -> x 10: if(true(),x,y) -> x 11: if(false(),x,y) -> y 12: not(x) -> if(x,false(),true()) 13: gt❆1_s(x,zero()) -> true() 14: gt❆1_zero(y) -> false() 15: gt❆1_s(x,s(y)) -> gt(x,y) 16: gt(zero(),_1) ->= gt❆1_zero(_1) 17: gt(s(_1),_2) ->= gt❆1_s(_1,_2) Number of strict rules: 15 Direct Order(PosReal,>,Poly) ... failed. Dependency Pairs: #1: #minus(s(x),s(y)) -> #minus(x,y) #2: #plus(s(x),x) -> #plus(if(gt(x,x),id(x),id(x)),s(x)) #3: #plus(s(x),x) -> #if(gt(x,x),id(x),id(x)) #4: #plus(s(x),x) -> #gt(x,x) #5: #plus(s(x),x) -> #id(x) #6: #plus(s(x),x) -> #id(x) #7: #not(x) -> #if(x,false(),true()) #8: #plus(s(x),s(y)) -> #plus(if(gt(x,y),x,y),if(not(gt(x,y)),id(x),id(y))) #9: #plus(s(x),s(y)) -> #if(gt(x,y),x,y) #10: #plus(s(x),s(y)) -> #gt(x,y) #11: #plus(s(x),s(y)) -> #if(not(gt(x,y)),id(x),id(y)) #12: #plus(s(x),s(y)) -> #not(gt(x,y)) #13: #plus(s(x),s(y)) -> #gt(x,y) #14: #plus(s(x),s(y)) -> #id(x) #15: #plus(s(x),s(y)) -> #id(y) #16: #gt(s(_1),_2) ->? #gt❆1_s(_1,_2) #17: #gt(zero(),_1) ->? #gt❆1_zero(_1) #18: #plus(id(x),s(y)) -> #plus(x,if(gt❆1_s(y,y),y,s(y))) #19: #plus(id(x),s(y)) -> #if(gt❆1_s(y,y),y,s(y)) #20: #plus(id(x),s(y)) -> #gt❆1_s(y,y) #21: #gt❆1_s(x,s(y)) -> #gt(x,y) #22: #double(s(x)) -> #double(x) Number of SCCs: 4, DPs: 7, edges: 13 SCC { #22 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 2) + x1 gt(x1,x2) weight: 0 minus(x1,x2) weight: 0 #plus(x1,x2) weight: 0 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: 0 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: 0 #double(x1) weight: x1 double(x1) weight: 0 #gt(x1,x2) weight: 0 #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: 0 #if(x1,x2,x3) weight: 0 id(x1) weight: 0 gt❆1_s(x1,x2) weight: 0 not(x1) weight: 0 Usable rules: { } Removed DPs: #22 Number of SCCs: 3, DPs: 6, edges: 12 SCC { #1 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 2) + x1 gt(x1,x2) weight: 0 minus(x1,x2) weight: 0 #plus(x1,x2) weight: 0 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: 0 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: 0 #double(x1) weight: 0 double(x1) weight: 0 #gt(x1,x2) weight: 0 #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: x2 plus(x1,x2) weight: 0 #if(x1,x2,x3) weight: 0 id(x1) weight: 0 gt❆1_s(x1,x2) weight: 0 not(x1) weight: 0 Usable rules: { } Removed DPs: #1 Number of SCCs: 2, DPs: 5, edges: 11 SCC { #16 #21 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 2) + x1 gt(x1,x2) weight: 0 minus(x1,x2) weight: 0 #plus(x1,x2) weight: 0 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: 0 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: 0 #double(x1) weight: 0 double(x1) weight: 0 #gt(x1,x2) weight: (/ 1 4) + x2 #gt❆1_s(x1,x2) weight: x2 #minus(x1,x2) weight: 0 plus(x1,x2) weight: 0 #if(x1,x2,x3) weight: 0 id(x1) weight: 0 gt❆1_s(x1,x2) weight: 0 not(x1) weight: 0 Usable rules: { } Removed DPs: #16 #21 Number of SCCs: 1, DPs: 3, edges: 9 SCC { #2 #8 #18 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... succeeded. zero() weight: (/ 1 16) s(x1) weight: (/ 1 4) + x1 gt(x1,x2) weight: max{0, (/ 3 8) + x2} minus(x1,x2) weight: 0 #plus(x1,x2) weight: max{(/ 1 16) + x2, (/ 3 16) + x1} false() weight: (/ 1 16) #id(x1) weight: 0 true() weight: (/ 1 2) gt❆1_zero(x1) weight: 0 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: max{0, x3, (/ 1 16) + x2} #double(x1) weight: 0 double(x1) weight: 0 #gt(x1,x2) weight: 0 #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: 0 #if(x1,x2,x3) weight: 0 id(x1) weight: x1 gt❆1_s(x1,x2) weight: max{(/ 1 16) + x2, (/ 7 16) + x1} not(x1) weight: 0 Usable rules: { 9..11 } Removed DPs: #2 #8 Number of SCCs: 1, DPs: 1, edges: 1 SCC { #18 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 4) gt(x1,x2) weight: (/ 1 4) minus(x1,x2) weight: 0 #plus(x1,x2) weight: x1 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: 0 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: (/ 1 4) + x2 + x3 #double(x1) weight: 0 double(x1) weight: 0 #gt(x1,x2) weight: (/ 1 4) #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: 0 #if(x1,x2,x3) weight: 0 id(x1) weight: (/ 1 4) + x1 gt❆1_s(x1,x2) weight: (/ 1 4) not(x1) weight: 0 Usable rules: { 10 11 13..17 } Removed DPs: #18 Number of SCCs: 0, DPs: 0, edges: 0 YES