* Step 1: Sum WORST_CASE(?,O(1)) + Considered Problem: - Strict TRS: *(x,+(y,z)) -> +(*(x,y),*(x,z)) *(+(x,y),z) -> +(*(x,z),*(y,z)) +(x,0()) -> x +(x,i(x)) -> 0() +(+(x,y),z) -> +(x,+(y,z)) - Signature: {*/2,+/2} / {0/0,i/1} - Obligation: innermost runtime complexity wrt. defined symbols {*,+} and constructors {0,i} + Applied Processor: Sum {left = someStrategy, right = someStrategy} + Details: () * Step 2: DependencyPairs WORST_CASE(?,O(1)) + Considered Problem: - Strict TRS: *(x,+(y,z)) -> +(*(x,y),*(x,z)) *(+(x,y),z) -> +(*(x,z),*(y,z)) +(x,0()) -> x +(x,i(x)) -> 0() +(+(x,y),z) -> +(x,+(y,z)) - Signature: {*/2,+/2} / {0/0,i/1} - Obligation: innermost runtime complexity wrt. defined symbols {*,+} and constructors {0,i} + Applied Processor: DependencyPairs {dpKind_ = DT} + Details: We add the following dependency tuples: Strict DPs *#(x,+(y,z)) -> c_1(+#(*(x,y),*(x,z)),*#(x,y),*#(x,z)) *#(+(x,y),z) -> c_2(+#(*(x,z),*(y,z)),*#(x,z),*#(y,z)) +#(x,0()) -> c_3() +#(x,i(x)) -> c_4() +#(+(x,y),z) -> c_5(+#(x,+(y,z)),+#(y,z)) Weak DPs and mark the set of starting terms. * Step 3: UsableRules WORST_CASE(?,O(1)) + Considered Problem: - Strict DPs: *#(x,+(y,z)) -> c_1(+#(*(x,y),*(x,z)),*#(x,y),*#(x,z)) *#(+(x,y),z) -> c_2(+#(*(x,z),*(y,z)),*#(x,z),*#(y,z)) +#(x,0()) -> c_3() +#(x,i(x)) -> c_4() +#(+(x,y),z) -> c_5(+#(x,+(y,z)),+#(y,z)) - Weak TRS: *(x,+(y,z)) -> +(*(x,y),*(x,z)) *(+(x,y),z) -> +(*(x,z),*(y,z)) +(x,0()) -> x +(x,i(x)) -> 0() +(+(x,y),z) -> +(x,+(y,z)) - Signature: {*/2,+/2,*#/2,+#/2} / {0/0,i/1,c_1/3,c_2/3,c_3/0,c_4/0,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {*#,+#} and constructors {0,i} + Applied Processor: UsableRules + Details: We replace rewrite rules by usable rules: +#(x,0()) -> c_3() +#(x,i(x)) -> c_4() * Step 4: Trivial WORST_CASE(?,O(1)) + Considered Problem: - Strict DPs: +#(x,0()) -> c_3() +#(x,i(x)) -> c_4() - Signature: {*/2,+/2,*#/2,+#/2} / {0/0,i/1,c_1/3,c_2/3,c_3/0,c_4/0,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {*#,+#} and constructors {0,i} + Applied Processor: Trivial + Details: Consider the dependency graph 1:S:+#(x,0()) -> c_3() 2:S:+#(x,i(x)) -> c_4() The dependency graph contains no loops, we remove all dependency pairs. * Step 5: EmptyProcessor WORST_CASE(?,O(1)) + Considered Problem: - Signature: {*/2,+/2,*#/2,+#/2} / {0/0,i/1,c_1/3,c_2/3,c_3/0,c_4/0,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {*#,+#} and constructors {0,i} + Applied Processor: EmptyProcessor + Details: The problem is already closed. The intended complexity is O(1). WORST_CASE(?,O(1))