*** 1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: a(y,x) -> y a(y,c(b(a(0(),x),0()))) -> b(a(c(b(0(),y)),x),0()) b(x,y) -> c(a(c(y),a(0(),x))) Weak DP Rules: Weak TRS Rules: Signature: {a/2,b/2} / {0/0,c/1} Obligation: Innermost basic terms: {a,b}/{0,c} Applied Processor: InnermostRuleRemoval Proof: Arguments of following rules are not normal-forms. a(y,c(b(a(0(),x),0()))) -> b(a(c(b(0(),y)),x),0()) All above mentioned rules can be savely removed. *** 1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: a(y,x) -> y b(x,y) -> c(a(c(y),a(0(),x))) Weak DP Rules: Weak TRS Rules: Signature: {a/2,b/2} / {0/0,c/1} Obligation: Innermost basic terms: {a,b}/{0,c} Applied Processor: DependencyPairs {dpKind_ = DT} Proof: We add the following dependency tuples: Strict DPs a#(y,x) -> c_1() b#(x,y) -> c_2(a#(c(y),a(0(),x)),a#(0(),x)) Weak DPs and mark the set of starting terms. *** 1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: a#(y,x) -> c_1() b#(x,y) -> c_2(a#(c(y),a(0(),x)),a#(0(),x)) Strict TRS Rules: Weak DP Rules: Weak TRS Rules: a(y,x) -> y b(x,y) -> c(a(c(y),a(0(),x))) Signature: {a/2,b/2,a#/2,b#/2} / {0/0,c/1,c_1/0,c_2/2} Obligation: Innermost basic terms: {a#,b#}/{0,c} Applied Processor: UsableRules Proof: We replace rewrite rules by usable rules: a(y,x) -> y a#(y,x) -> c_1() b#(x,y) -> c_2(a#(c(y),a(0(),x)),a#(0(),x)) *** 1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: a#(y,x) -> c_1() b#(x,y) -> c_2(a#(c(y),a(0(),x)),a#(0(),x)) Strict TRS Rules: Weak DP Rules: Weak TRS Rules: a(y,x) -> y Signature: {a/2,b/2,a#/2,b#/2} / {0/0,c/1,c_1/0,c_2/2} Obligation: Innermost basic terms: {a#,b#}/{0,c} Applied Processor: Trivial Proof: Consider the dependency graph 1:S:a#(y,x) -> c_1() 2:S:b#(x,y) -> c_2(a#(c(y),a(0(),x)),a#(0(),x)) -->_2 a#(y,x) -> c_1():1 -->_1 a#(y,x) -> c_1():1 The dependency graph contains no loops, we remove all dependency pairs. *** 1.1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: Weak DP Rules: Weak TRS Rules: a(y,x) -> y Signature: {a/2,b/2,a#/2,b#/2} / {0/0,c/1,c_1/0,c_2/2} Obligation: Innermost basic terms: {a#,b#}/{0,c} Applied Processor: EmptyProcessor Proof: The problem is already closed. The intended complexity is O(1).