Input TRS: 1: f(true(),x) -> f(eq(0(),minus(x,x)),plus1(x)) 2: plus1(x) -> plus(s(0()),x) 3: plus(0(),y) -> y 4: plus(s(x),y) -> s(plus(x,y)) 5: minus(x,0()) -> x 6: minus(0(),y) -> 0() 7: minus(s(x),s(y)) -> minus(x,y) 8: eq(0(),0()) -> true() 9: eq(s(x),0()) -> false() 10: eq(0(),s(y)) -> false() 11: eq(s(x),s(y)) -> eq(x,y) Number of strict rules: 11 Direct Order(PosReal,>,Poly) ... failed. Freezing plus eq 1: f(true(),x) -> f(eq❆1_0(minus(x,x)),plus1(x)) 2: plus1(x) -> plus❆1_s(0(),x) 3: plus❆1_0(y) -> y 4: plus❆1_s(x,y) -> s(plus(x,y)) 5: minus(x,0()) -> x 6: minus(0(),y) -> 0() 7: minus(s(x),s(y)) -> minus(x,y) 8: eq❆1_0(0()) -> true() 9: eq❆1_s(x,0()) -> false() 10: eq❆1_0(s(y)) -> false() 11: eq❆1_s(x,s(y)) -> eq(x,y) 12: eq(0(),_1) ->= eq❆1_0(_1) 13: eq(s(_1),_2) ->= eq❆1_s(_1,_2) 14: plus(0(),_1) ->= plus❆1_0(_1) 15: plus(s(_1),_2) ->= plus❆1_s(_1,_2) Number of strict rules: 11 Direct Order(PosReal,>,Poly) ... failed. Dependency Pairs: #1: #plus1(x) -> #plus❆1_s(0(),x) #2: #eq(s(_1),_2) ->? #eq❆1_s(_1,_2) #3: #eq❆1_s(x,s(y)) -> #eq(x,y) #4: #eq(0(),_1) ->? #eq❆1_0(_1) #5: #plus(0(),_1) ->? #plus❆1_0(_1) #6: #minus(s(x),s(y)) -> #minus(x,y) #7: #f(true(),x) -> #f(eq❆1_0(minus(x,x)),plus1(x)) #8: #f(true(),x) -> #eq❆1_0(minus(x,x)) #9: #f(true(),x) -> #minus(x,x) #10: #f(true(),x) -> #plus1(x) #11: #plus(s(_1),_2) ->? #plus❆1_s(_1,_2) #12: #plus❆1_s(x,y) -> #plus(x,y) Number of SCCs: 4, DPs: 6, edges: 6 SCC { #6 } Removing DPs: Order(PosReal,>,Sum)... succeeded. s(x1) weight: (/ 1 2) + x1 minus(x1,x2) weight: 0 plus1(x1) weight: 0 #plus(x1,x2) weight: 0 eq(x1,x2) weight: 0 plus❆1_0(x1) weight: 0 false() weight: 0 true() weight: 0 #eq❆1_0(x1) weight: 0 f(x1,x2) weight: 0 #eq(x1,x2) weight: 0 eq❆1_s(x1,x2) weight: 0 0() weight: 0 #plus❆1_0(x1) weight: 0 #eq❆1_s(x1,x2) weight: 0 eq❆1_0(x1) weight: 0 #f(x1,x2) weight: 0 #minus(x1,x2) weight: x2 plus(x1,x2) weight: 0 #plus1(x1) weight: 0 plus❆1_s(x1,x2) weight: 0 #plus❆1_s(x1,x2) weight: 0 Usable rules: { } Removed DPs: #6 Number of SCCs: 3, DPs: 5, edges: 5 SCC { #7 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... QLPOpS... Order(PosReal,>,MaxSum)... QWPOpS(PosReal,>,MaxSum)... Order(PosReal,>,Sum-Sum; PosReal,≥,Sum-Sum)... Order(PosReal,>,Sum-Sum; NegReal,≥,Sum)... Order(PosReal,>,MaxSum-Sum; NegReal,≥,Sum)... failed. Removing edges: failed. Finding a loop... failed. MAYBE