YES We show the termination of the TRS R: p(s(x)) -> x plus(x,|0|()) -> x plus(|0|(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(|0|(),y) -> |0|() times(s(|0|()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(|0|(),y) -> |0|() div(x,y) -> quot(x,y,y) quot(|0|(),s(y),z) -> |0|() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,|0|(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(y,z)) eq(|0|(),|0|()) -> true() eq(s(x),|0|()) -> false() eq(|0|(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(|0|())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: plus#(s(x),y) -> plus#(x,y) p2: plus#(s(x),y) -> plus#(p(s(x)),y) p3: plus#(s(x),y) -> p#(s(x)) p4: plus#(x,s(y)) -> plus#(x,p(s(y))) p5: plus#(x,s(y)) -> p#(s(y)) p6: times#(s(x),y) -> plus#(y,times(x,y)) p7: times#(s(x),y) -> times#(x,y) p8: div#(x,y) -> quot#(x,y,y) p9: quot#(s(x),s(y),z) -> quot#(x,y,z) p10: quot#(x,|0|(),s(z)) -> div#(x,s(z)) p11: div#(div(x,y),z) -> div#(x,times(y,z)) p12: div#(div(x,y),z) -> times#(y,z) p13: eq#(s(x),s(y)) -> eq#(x,y) p14: divides#(y,x) -> eq#(x,times(div(x,y),y)) p15: divides#(y,x) -> times#(div(x,y),y) p16: divides#(y,x) -> div#(x,y) p17: prime#(s(s(x))) -> pr#(s(s(x)),s(x)) p18: pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) p19: pr#(x,s(s(y))) -> divides#(s(s(y)),x) p20: if#(false(),x,y) -> pr#(x,y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: {p18, p20} {p8, p9, p10, p11} {p7} {p1, p2, p4} {p13} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: if#(false(),x,y) -> pr#(x,y) p2: pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r2, r8, r10, r12, r16, r18, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: if#_A(x1,x2,x3) = x3 + 17 false_A = 9 pr#_A(x1,x2) = max{16, x2 - 1} s_A(x1) = x1 + 19 divides_A(x1,x2) = max{49, x2 + 2} plus_A(x1,x2) = max{x1 + 161, x2 + 141} |0|_A = 10 times_A(x1,x2) = max{x1 - 142, x2 + 141} div_A(x1,x2) = max{x1 + 70, x2 + 140} quot_A(x1,x2,x3) = max{175, x1 + 70, x2 - 20, x3 + 32} eq_A(x1,x2) = max{3, x1 - 11, x2 - 9} true_A = 0 pr_A(x1,x2) = max{0, x1 - 9, x2 - 39} if_A(x1,x2,x3) = max{39, x1 - 10, x2 - 1, x3 - 14} base order 2: precedence: if# = pr# > s = times = div = quot = if > plus = |0| > pr > divides > eq > false > true partial status: pi(if#) = [3] pi(false) = [] pi(pr#) = [] pi(s) = [1] pi(divides) = [] pi(plus) = [1, 2] pi(|0|) = [] pi(times) = [] pi(div) = [] pi(quot) = [1] pi(eq) = [] pi(true) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: (no SCCs) -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: div#(div(x,y),z) -> div#(x,times(y,z)) p2: div#(x,y) -> quot#(x,y,y) p3: quot#(x,|0|(),s(z)) -> div#(x,s(z)) p4: quot#(s(x),s(y),z) -> quot#(x,y,z) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r7, r10, r12, r16, r17, r18, r19, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: div#_A(x1,x2) = max{4, x1 - 10} div_A(x1,x2) = max{x1 + 16, x2 + 16} times_A(x1,x2) = max{10, x1 - 33, x2 - 17} quot#_A(x1,x2,x3) = max{4, x1 - 10} |0|_A = 6 s_A(x1) = max{9, x1 + 5} quot_A(x1,x2,x3) = max{17, x1 - 10, x2 - 10, x3 - 10} eq_A(x1,x2) = max{4, x1 - 10} true_A = 3 false_A = 2 pr_A(x1,x2) = max{12, x1 - 32, x2 - 25} if_A(x1,x2,x3) = max{15, x1 - 4, x2 - 1, x3 - 10} base order 2: precedence: div > times > div# = quot# = eq = if > s = quot = pr > |0| > true > false partial status: pi(div#) = [] pi(div) = [] pi(times) = [] pi(quot#) = [] pi(|0|) = [] pi(s) = [1] pi(quot) = [] pi(eq) = [] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: div#(x,y) -> quot#(x,y,y) p2: quot#(x,|0|(),s(z)) -> div#(x,s(z)) p3: quot#(s(x),s(y),z) -> quot#(x,y,z) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: {p1, p2, p3} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: div#(x,y) -> quot#(x,y,y) p2: quot#(s(x),s(y),z) -> quot#(x,y,z) p3: quot#(x,|0|(),s(z)) -> div#(x,s(z)) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r7, r10, r12, r16, r17, r18, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: div#_A(x1,x2) = x1 + 3 quot#_A(x1,x2,x3) = x1 + 3 s_A(x1) = x1 |0|_A = 0 times_A(x1,x2) = max{x1, x2 - 2} div_A(x1,x2) = max{0, x1 - 2, x2 - 3} quot_A(x1,x2,x3) = max{x1, x2 + 1, x3 - 2} eq_A(x1,x2) = max{1, x1 - 2, x2} true_A = 0 false_A = 0 pr_A(x1,x2) = 2 if_A(x1,x2,x3) = max{3, x1 - 1, x2 + 1, x3 - 1} base order 2: precedence: div# = quot# = s = div = quot = pr = if > times = eq > |0| > true > false partial status: pi(div#) = [1] pi(quot#) = [1] pi(s) = [1] pi(|0|) = [] pi(times) = [1] pi(div) = [] pi(quot) = [1, 2] pi(eq) = [2] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: div#(x,y) -> quot#(x,y,y) p2: quot#(x,|0|(),s(z)) -> div#(x,s(z)) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: {p1, p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: div#(x,y) -> quot#(x,y,y) p2: quot#(x,|0|(),s(z)) -> div#(x,s(z)) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r12, r16, r17, r18, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: div#_A(x1,x2) = x2 + 6 quot#_A(x1,x2,x3) = max{x2 + 1, x3 - 1} |0|_A = 17 s_A(x1) = 10 quot_A(x1,x2,x3) = max{18, x1 + 5, x2 - 18, x3 + 5} eq_A(x1,x2) = max{24, x1 - 18, x2 + 5} true_A = 23 false_A = 9 if_A(x1,x2,x3) = max{10, x1 - 24, x2 - 5, x3 - 1} base order 2: precedence: eq > true > quot# = |0| > div# = if > s = quot > false partial status: pi(div#) = [2] pi(quot#) = [2] pi(|0|) = [] pi(s) = [] pi(quot) = [] pi(eq) = [2] pi(true) = [] pi(false) = [] pi(if) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: div#(x,y) -> quot#(x,y,y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: (no SCCs) -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: times#(s(x),y) -> times#(x,y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r7, r10, r12, r16, r17, r18, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: times#_A(x1,x2) = max{x1 + 7, x2 + 8} s_A(x1) = max{11, x1 + 6} times_A(x1,x2) = max{17, x2 - 19} |0|_A = 15 div_A(x1,x2) = max{16, x1 - 34, x2 - 34} quot_A(x1,x2,x3) = max{22, x1 - 16, x2 - 39, x3 - 27} eq_A(x1,x2) = max{12, x1 - 16, x2 - 50} true_A = 8 false_A = 7 pr_A(x1,x2) = max{9, x1 - 27, x2 - 20} if_A(x1,x2,x3) = max{18, x1 - 19, x2 - 26, x3 - 12} base order 2: precedence: quot > times = div > |0| = eq > true = if > times# = s > pr > false partial status: pi(times#) = [1] pi(s) = [1] pi(times) = [] pi(|0|) = [] pi(div) = [] pi(quot) = [] pi(eq) = [] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p1 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: plus#(s(x),y) -> plus#(x,y) p2: plus#(x,s(y)) -> plus#(x,p(s(y))) p3: plus#(s(x),y) -> plus#(p(s(x)),y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r1, r7, r10, r16, r17, r18, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: plus#_A(x1,x2) = max{58, x1 + 5, x2 + 26} s_A(x1) = max{32, x1 + 4} p_A(x1) = max{31, x1 - 3} times_A(x1,x2) = max{35, x1 - 34, x2 - 38} |0|_A = 31 div_A(x1,x2) = max{33, x1 - 35, x2 - 106} eq_A(x1,x2) = max{33, x1 - 33, x2 - 37} true_A = 2 false_A = 1 pr_A(x1,x2) = max{3, x1 - 23, x2 - 45} if_A(x1,x2,x3) = max{2, x1 - 3, x2 - 22, x3 - 70} base order 2: precedence: times > div = eq > plus# = s = pr = if > p = |0| > true > false partial status: pi(plus#) = [1] pi(s) = [] pi(p) = [] pi(times) = [] pi(|0|) = [] pi(div) = [] pi(eq) = [] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: plus#(x,s(y)) -> plus#(x,p(s(y))) p2: plus#(s(x),y) -> plus#(p(s(x)),y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: {p1, p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: plus#(x,s(y)) -> plus#(x,p(s(y))) p2: plus#(s(x),y) -> plus#(p(s(x)),y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r1, r7, r10, r12, r16, r17, r18, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: plus#_A(x1,x2) = x1 + 6 s_A(x1) = max{22, x1 + 10} p_A(x1) = max{13, x1 - 7} times_A(x1,x2) = max{35, x1 - 73, x2 - 35} |0|_A = 23 div_A(x1,x2) = max{37, x1 - 38, x2 - 34} quot_A(x1,x2,x3) = max{48, x1 - 24, x2 - 36, x3 - 23} eq_A(x1,x2) = max{23, x1 - 74, x2 - 36} true_A = 2 false_A = 1 pr_A(x1,x2) = max{3, x1 - 74, x2 - 34} if_A(x1,x2,x3) = max{2, x1 - 51, x2 - 75, x3 - 35} base order 2: precedence: div > times > |0| = eq > s = p = quot = pr = if > plus# = true > false partial status: pi(plus#) = [] pi(s) = [] pi(p) = [] pi(times) = [] pi(|0|) = [] pi(div) = [] pi(quot) = [] pi(eq) = [] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: plus#(x,s(y)) -> plus#(x,p(s(y))) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The estimated dependency graph contains the following SCCs: {p1} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: plus#(x,s(y)) -> plus#(x,p(s(y))) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r1, r7, r10, r12, r16, r17, r18, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: plus#_A(x1,x2) = x2 + 1 s_A(x1) = x1 + 6 p_A(x1) = max{4, x1 - 4} times_A(x1,x2) = max{21, x1 - 21, x2 - 25} |0|_A = 6 div_A(x1,x2) = max{20, x1 - 32, x2 - 26} quot_A(x1,x2,x3) = max{27, x1 - 25, x2 - 27, x3 - 7} eq_A(x1,x2) = max{7, x1 - 25, x2 - 22} true_A = 4 false_A = 3 pr_A(x1,x2) = max{6, x1 - 46, x2 - 40} if_A(x1,x2,x3) = max{6, x1 - 5, x2 - 46, x3 - 29} base order 2: precedence: p = eq = if > s = times = div = quot > plus# = |0| > pr > true > false partial status: pi(plus#) = [2] pi(s) = [] pi(p) = [] pi(times) = [] pi(|0|) = [] pi(div) = [] pi(quot) = [] pi(eq) = [] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p1 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: eq#(s(x),s(y)) -> eq#(x,y) and R consists of: r1: p(s(x)) -> x r2: plus(x,|0|()) -> x r3: plus(|0|(),y) -> y r4: plus(s(x),y) -> s(plus(x,y)) r5: plus(s(x),y) -> s(plus(p(s(x)),y)) r6: plus(x,s(y)) -> s(plus(x,p(s(y)))) r7: times(|0|(),y) -> |0|() r8: times(s(|0|()),y) -> y r9: times(s(x),y) -> plus(y,times(x,y)) r10: div(|0|(),y) -> |0|() r11: div(x,y) -> quot(x,y,y) r12: quot(|0|(),s(y),z) -> |0|() r13: quot(s(x),s(y),z) -> quot(x,y,z) r14: quot(x,|0|(),s(z)) -> s(div(x,s(z))) r15: div(div(x,y),z) -> div(x,times(y,z)) r16: eq(|0|(),|0|()) -> true() r17: eq(s(x),|0|()) -> false() r18: eq(|0|(),s(y)) -> false() r19: eq(s(x),s(y)) -> eq(x,y) r20: divides(y,x) -> eq(x,times(div(x,y),y)) r21: prime(s(s(x))) -> pr(s(s(x)),s(x)) r22: pr(x,s(|0|())) -> true() r23: pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) r24: if(true(),x,y) -> false() r25: if(false(),x,y) -> pr(x,y) The set of usable rules consists of r7, r10, r12, r16, r17, r18, r19, r22, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: eq#_A(x1,x2) = max{x1 - 1, x2 + 8} s_A(x1) = max{29, x1 + 9} times_A(x1,x2) = max{31, x1 - 31, x2 - 35} |0|_A = 8 div_A(x1,x2) = max{30, x1 - 40, x2 - 72} quot_A(x1,x2,x3) = max{40, x1 - 30, x2 - 52, x3 - 53} eq_A(x1,x2) = max{30, x1 - 35, x2 - 32} true_A = 2 false_A = 1 pr_A(x1,x2) = max{3, x1 - 102, x2 - 84} if_A(x1,x2,x3) = max{28, x1 - 40, x2 - 1, x3 - 74} base order 2: precedence: times > eq# = |0| = eq = if > s = div = quot = true > pr > false partial status: pi(eq#) = [2] pi(s) = [] pi(times) = [] pi(|0|) = [] pi(div) = [] pi(quot) = [] pi(eq) = [] pi(true) = [] pi(false) = [] pi(pr) = [] pi(if) = [] The following rules are removed: p1 Then no dependency pair remains.