MAYBE * Step 1: DependencyPairs MAYBE + Considered Problem: - Strict TRS: cond(y,x,y) -> s(minus(x,s(y))) min(u,0()) -> 0() min(0(),v) -> 0() min(s(u),s(v)) -> s(min(u,v)) minus(x,y) -> cond(min(x,y),x,y) - Signature: {cond/3,min/2,minus/2} / {0/0,s/1} - Obligation: innermost runtime complexity wrt. defined symbols {cond,min,minus} and constructors {0,s} + Applied Processor: DependencyPairs {dpKind_ = DT} + Details: We add the following dependency tuples: Strict DPs cond#(y,x,y) -> c_1(minus#(x,s(y))) min#(u,0()) -> c_2() min#(0(),v) -> c_3() min#(s(u),s(v)) -> c_4(min#(u,v)) minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) Weak DPs and mark the set of starting terms. * Step 2: UsableRules MAYBE + Considered Problem: - Strict DPs: cond#(y,x,y) -> c_1(minus#(x,s(y))) min#(u,0()) -> c_2() min#(0(),v) -> c_3() min#(s(u),s(v)) -> c_4(min#(u,v)) minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) - Weak TRS: cond(y,x,y) -> s(minus(x,s(y))) min(u,0()) -> 0() min(0(),v) -> 0() min(s(u),s(v)) -> s(min(u,v)) minus(x,y) -> cond(min(x,y),x,y) - Signature: {cond/3,min/2,minus/2,cond#/3,min#/2,minus#/2} / {0/0,s/1,c_1/1,c_2/0,c_3/0,c_4/1,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {cond#,min#,minus#} and constructors {0,s} + Applied Processor: UsableRules + Details: We replace rewrite rules by usable rules: min(u,0()) -> 0() min(0(),v) -> 0() min(s(u),s(v)) -> s(min(u,v)) cond#(y,x,y) -> c_1(minus#(x,s(y))) min#(u,0()) -> c_2() min#(0(),v) -> c_3() min#(s(u),s(v)) -> c_4(min#(u,v)) minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) * Step 3: PredecessorEstimation MAYBE + Considered Problem: - Strict DPs: cond#(y,x,y) -> c_1(minus#(x,s(y))) min#(u,0()) -> c_2() min#(0(),v) -> c_3() min#(s(u),s(v)) -> c_4(min#(u,v)) minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) - Weak TRS: min(u,0()) -> 0() min(0(),v) -> 0() min(s(u),s(v)) -> s(min(u,v)) - Signature: {cond/3,min/2,minus/2,cond#/3,min#/2,minus#/2} / {0/0,s/1,c_1/1,c_2/0,c_3/0,c_4/1,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {cond#,min#,minus#} and constructors {0,s} + Applied Processor: PredecessorEstimation {onSelection = all simple predecessor estimation selector} + Details: We estimate the number of application of {2,3} by application of Pre({2,3}) = {4,5}. Here rules are labelled as follows: 1: cond#(y,x,y) -> c_1(minus#(x,s(y))) 2: min#(u,0()) -> c_2() 3: min#(0(),v) -> c_3() 4: min#(s(u),s(v)) -> c_4(min#(u,v)) 5: minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) * Step 4: RemoveWeakSuffixes MAYBE + Considered Problem: - Strict DPs: cond#(y,x,y) -> c_1(minus#(x,s(y))) min#(s(u),s(v)) -> c_4(min#(u,v)) minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) - Weak DPs: min#(u,0()) -> c_2() min#(0(),v) -> c_3() - Weak TRS: min(u,0()) -> 0() min(0(),v) -> 0() min(s(u),s(v)) -> s(min(u,v)) - Signature: {cond/3,min/2,minus/2,cond#/3,min#/2,minus#/2} / {0/0,s/1,c_1/1,c_2/0,c_3/0,c_4/1,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {cond#,min#,minus#} and constructors {0,s} + Applied Processor: RemoveWeakSuffixes + Details: Consider the dependency graph 1:S:cond#(y,x,y) -> c_1(minus#(x,s(y))) -->_1 minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)):3 2:S:min#(s(u),s(v)) -> c_4(min#(u,v)) -->_1 min#(0(),v) -> c_3():5 -->_1 min#(u,0()) -> c_2():4 -->_1 min#(s(u),s(v)) -> c_4(min#(u,v)):2 3:S:minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) -->_2 min#(0(),v) -> c_3():5 -->_2 min#(u,0()) -> c_2():4 -->_2 min#(s(u),s(v)) -> c_4(min#(u,v)):2 -->_1 cond#(y,x,y) -> c_1(minus#(x,s(y))):1 4:W:min#(u,0()) -> c_2() 5:W:min#(0(),v) -> c_3() The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed. 4: min#(u,0()) -> c_2() 5: min#(0(),v) -> c_3() * Step 5: Failure MAYBE + Considered Problem: - Strict DPs: cond#(y,x,y) -> c_1(minus#(x,s(y))) min#(s(u),s(v)) -> c_4(min#(u,v)) minus#(x,y) -> c_5(cond#(min(x,y),x,y),min#(x,y)) - Weak TRS: min(u,0()) -> 0() min(0(),v) -> 0() min(s(u),s(v)) -> s(min(u,v)) - Signature: {cond/3,min/2,minus/2,cond#/3,min#/2,minus#/2} / {0/0,s/1,c_1/1,c_2/0,c_3/0,c_4/1,c_5/2} - Obligation: innermost runtime complexity wrt. defined symbols {cond#,min#,minus#} and constructors {0,s} + Applied Processor: EmptyProcessor + Details: The problem is still open. MAYBE