Input TRS: 1: minus(x,0()) -> x 2: minus(s(x),s(y)) -> minus(x,y) 3: quot(0(),s(y)) -> 0() 4: quot(s(x),s(y)) -> s(quot(minus(x,y),s(y))) 5: minus(minus(x,y),z) -> minus(x,plus(y,z)) 6: plus(s(x),s(y)) -> s(s(plus(if(gt(x,y),x,y),if(not(gt(x,y)),id(x),id(y))))) 7: plus(s(x),x) -> plus(if(gt(x,x),id(x),id(x)),s(x)) 8: plus(zero(),y) -> y 9: plus(id(x),s(y)) -> s(plus(x,if(gt(s(y),y),y,s(y)))) 10: id(x) -> x 11: if(true(),x,y) -> x 12: if(false(),x,y) -> y 13: not(x) -> if(x,false(),true()) 14: gt(s(x),zero()) -> true() 15: gt(zero(),y) -> false() 16: gt(s(x),s(y)) -> gt(x,y) Number of strict rules: 16 Direct Order(PosReal,>,Poly) ... failed. Freezing gt 1: minus(x,0()) -> x 2: minus(s(x),s(y)) -> minus(x,y) 3: quot(0(),s(y)) -> 0() 4: quot(s(x),s(y)) -> s(quot(minus(x,y),s(y))) 5: minus(minus(x,y),z) -> minus(x,plus(y,z)) 6: plus(s(x),s(y)) -> s(s(plus(if(gt(x,y),x,y),if(not(gt(x,y)),id(x),id(y))))) 7: plus(s(x),x) -> plus(if(gt(x,x),id(x),id(x)),s(x)) 8: plus(zero(),y) -> y 9: plus(id(x),s(y)) -> s(plus(x,if(gt❆1_s(y,y),y,s(y)))) 10: id(x) -> x 11: if(true(),x,y) -> x 12: if(false(),x,y) -> y 13: not(x) -> if(x,false(),true()) 14: gt❆1_s(x,zero()) -> true() 15: gt❆1_zero(y) -> false() 16: gt❆1_s(x,s(y)) -> gt(x,y) 17: gt(zero(),_1) ->= gt❆1_zero(_1) 18: gt(s(_1),_2) ->= gt❆1_s(_1,_2) Number of strict rules: 16 Direct Order(PosReal,>,Poly) ... failed. Dependency Pairs: #1: #minus(s(x),s(y)) -> #minus(x,y) #2: #plus(s(x),s(y)) -> #plus(if(gt(x,y),x,y),if(not(gt(x,y)),id(x),id(y))) #3: #plus(s(x),s(y)) -> #if(gt(x,y),x,y) #4: #plus(s(x),s(y)) -> #gt(x,y) #5: #plus(s(x),s(y)) -> #if(not(gt(x,y)),id(x),id(y)) #6: #plus(s(x),s(y)) -> #not(gt(x,y)) #7: #plus(s(x),s(y)) -> #gt(x,y) #8: #plus(s(x),s(y)) -> #id(x) #9: #plus(s(x),s(y)) -> #id(y) #10: #not(x) -> #if(x,false(),true()) #11: #plus(id(x),s(y)) -> #plus(x,if(gt❆1_s(y,y),y,s(y))) #12: #plus(id(x),s(y)) -> #if(gt❆1_s(y,y),y,s(y)) #13: #plus(id(x),s(y)) -> #gt❆1_s(y,y) #14: #plus(s(x),x) -> #plus(if(gt(x,x),id(x),id(x)),s(x)) #15: #plus(s(x),x) -> #if(gt(x,x),id(x),id(x)) #16: #plus(s(x),x) -> #gt(x,x) #17: #plus(s(x),x) -> #id(x) #18: #plus(s(x),x) -> #id(x) #19: #minus(minus(x,y),z) -> #minus(x,plus(y,z)) #20: #minus(minus(x,y),z) -> #plus(y,z) #21: #gt(zero(),_1) ->? #gt❆1_zero(_1) #22: #gt❆1_s(x,s(y)) -> #gt(x,y) #23: #quot(s(x),s(y)) -> #quot(minus(x,y),s(y)) #24: #quot(s(x),s(y)) -> #minus(x,y) #25: #gt(s(_1),_2) ->? #gt❆1_s(_1,_2) Number of SCCs: 4, DPs: 8, edges: 16 SCC { #23 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 4) + x1 gt(x1,x2) weight: (/ 1 2) minus(x1,x2) weight: (/ 1 8) + x1 #plus(x1,x2) weight: 0 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: (/ 5 8) + x1 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: 0 quot(x1,x2) weight: 0 #gt(x1,x2) weight: 0 #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: (/ 1 8) #if(x1,x2,x3) weight: 0 id(x1) weight: (/ 1 8) #quot(x1,x2) weight: x1 gt❆1_s(x1,x2) weight: (/ 1 8) + x2 not(x1) weight: (/ 1 8) Usable rules: { 1 2 5 } Removed DPs: #23 Number of SCCs: 3, DPs: 7, edges: 15 SCC { #22 #25 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 4) + x1 gt(x1,x2) weight: (/ 1 2) minus(x1,x2) weight: (/ 1 8) + x1 #plus(x1,x2) weight: 0 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: (/ 5 8) + x1 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: 0 quot(x1,x2) weight: 0 #gt(x1,x2) weight: (/ 1 8) + x2 #gt❆1_s(x1,x2) weight: x2 #minus(x1,x2) weight: 0 plus(x1,x2) weight: (/ 1 8) #if(x1,x2,x3) weight: 0 id(x1) weight: (/ 1 8) #quot(x1,x2) weight: x1 gt❆1_s(x1,x2) weight: (/ 1 8) + x2 not(x1) weight: (/ 1 8) Usable rules: { } Removed DPs: #22 #25 Number of SCCs: 2, DPs: 5, edges: 13 SCC { #1 #19 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 4) + x1 gt(x1,x2) weight: (/ 1 2) minus(x1,x2) weight: (/ 1 8) + x1 #plus(x1,x2) weight: 0 false() weight: 0 #id(x1) weight: 0 true() weight: 0 gt❆1_zero(x1) weight: (/ 5 8) + x1 #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: 0 quot(x1,x2) weight: 0 #gt(x1,x2) weight: (/ 1 8) #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: x1 plus(x1,x2) weight: (/ 1 8) #if(x1,x2,x3) weight: 0 id(x1) weight: (/ 1 8) #quot(x1,x2) weight: x1 gt❆1_s(x1,x2) weight: (/ 1 8) + x2 not(x1) weight: (/ 1 8) Usable rules: { } Removed DPs: #1 #19 Number of SCCs: 1, DPs: 3, edges: 9 SCC { #2 #11 #14 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 2) + x1 gt(x1,x2) weight: max{0, (/ 1 8) + x2} minus(x1,x2) weight: 0 #plus(x1,x2) weight: max{(/ 1 8) + x2, (/ 3 8) + x1} false() weight: (/ 1 8) #id(x1) weight: 0 true() weight: (/ 3 8) 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 8) + x2} quot(x1,x2) 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 #quot(x1,x2) weight: 0 gt❆1_s(x1,x2) weight: max{0, (/ 1 4) + x2} not(x1) weight: x1 Usable rules: { 10..12 } Removed DPs: #2 #14 Number of SCCs: 1, DPs: 1, edges: 1 SCC { #11 } Removing DPs: Order(PosReal,>,Sum)... succeeded. zero() weight: 0 s(x1) weight: (/ 1 8) gt(x1,x2) weight: (/ 1 8) 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: (/ 1 4) #not(x1) weight: 0 #gt❆1_zero(x1) weight: 0 0() weight: 0 if(x1,x2,x3) weight: x2 + x3 quot(x1,x2) weight: 0 #gt(x1,x2) weight: (/ 1 8) #gt❆1_s(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: (/ 1 8) + x1 + x2 #if(x1,x2,x3) weight: 0 id(x1) weight: (/ 1 8) + x1 #quot(x1,x2) weight: 0 gt❆1_s(x1,x2) weight: (/ 1 4) + x2 not(x1) weight: (/ 1 8) Usable rules: { 11 12 } Removed DPs: #11 Number of SCCs: 0, DPs: 0, edges: 0 YES