* Step 1: Sum WORST_CASE(Omega(n^1),O(n^1))
+ Considered Problem:
- Strict TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),circ(cons(lift(),t),u)) -> circ(cons(lift(),circ(s,t)),u)
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
subst(a,id()) -> a
- Signature:
{circ/2,msubst/2,subst/2} / {cons/2,id/0,lift/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ,msubst,subst} and constructors {cons,id,lift}
+ Applied Processor:
Sum {left = someStrategy, right = someStrategy}
+ Details:
()
** Step 1.a:1: DecreasingLoops WORST_CASE(Omega(n^1),?)
+ Considered Problem:
- Strict TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),circ(cons(lift(),t),u)) -> circ(cons(lift(),circ(s,t)),u)
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
subst(a,id()) -> a
- Signature:
{circ/2,msubst/2,subst/2} / {cons/2,id/0,lift/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ,msubst,subst} and constructors {cons,id,lift}
+ Applied Processor:
DecreasingLoops {bound = AnyLoop, narrow = 10}
+ Details:
The system has following decreasing Loops:
circ(y,z){y -> cons(x,y)} =
circ(cons(x,y),z) ->^+ cons(msubst(x,z),circ(y,z))
= C[circ(y,z) = circ(y,z){}]
** Step 1.b:1: InnermostRuleRemoval WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),circ(cons(lift(),t),u)) -> circ(cons(lift(),circ(s,t)),u)
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
subst(a,id()) -> a
- Signature:
{circ/2,msubst/2,subst/2} / {cons/2,id/0,lift/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ,msubst,subst} and constructors {cons,id,lift}
+ Applied Processor:
InnermostRuleRemoval
+ Details:
Arguments of following rules are not normal-forms.
circ(cons(lift(),s),circ(cons(lift(),t),u)) -> circ(cons(lift(),circ(s,t)),u)
All above mentioned rules can be savely removed.
** Step 1.b:2: DependencyPairs WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
subst(a,id()) -> a
- Signature:
{circ/2,msubst/2,subst/2} / {cons/2,id/0,lift/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ,msubst,subst} and constructors {cons,id,lift}
+ Applied Processor:
DependencyPairs {dpKind_ = DT}
+ Details:
We add the following dependency tuples:
Strict DPs
circ#(s,id()) -> c_1()
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
circ#(id(),s) -> c_6()
msubst#(a,id()) -> c_7()
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
subst#(a,id()) -> c_9()
Weak DPs
and mark the set of starting terms.
** Step 1.b:3: UsableRules WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict DPs:
circ#(s,id()) -> c_1()
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
circ#(id(),s) -> c_6()
msubst#(a,id()) -> c_7()
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
subst#(a,id()) -> c_9()
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
subst(a,id()) -> a
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
UsableRules
+ Details:
We replace rewrite rules by usable rules:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
circ#(s,id()) -> c_1()
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
circ#(id(),s) -> c_6()
msubst#(a,id()) -> c_7()
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
subst#(a,id()) -> c_9()
** Step 1.b:4: PredecessorEstimation WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict DPs:
circ#(s,id()) -> c_1()
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
circ#(id(),s) -> c_6()
msubst#(a,id()) -> c_7()
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
subst#(a,id()) -> c_9()
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
PredecessorEstimation {onSelection = all simple predecessor estimation selector}
+ Details:
We estimate the number of application of
{1,6,7,9}
by application of
Pre({1,6,7,9}) = {2,3,4,5,8}.
Here rules are labelled as follows:
1: circ#(s,id()) -> c_1()
2: circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
3: circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
4: circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
5: circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
6: circ#(id(),s) -> c_6()
7: msubst#(a,id()) -> c_7()
8: msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
9: subst#(a,id()) -> c_9()
** Step 1.b:5: RemoveWeakSuffixes WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict DPs:
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
- Weak DPs:
circ#(s,id()) -> c_1()
circ#(id(),s) -> c_6()
msubst#(a,id()) -> c_7()
subst#(a,id()) -> c_9()
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
RemoveWeakSuffixes
+ Details:
Consider the dependency graph
1:S:circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
-->_2 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_1 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_2 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_2 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_1 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_2 circ#(id(),s) -> c_6():7
-->_1 circ#(id(),s) -> c_6():7
-->_2 circ#(s,id()) -> c_1():6
-->_1 circ#(s,id()) -> c_1():6
-->_2 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
-->_1 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
2:S:circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
-->_1 msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t)):5
-->_2 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_2 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 msubst#(a,id()) -> c_7():8
-->_2 circ#(id(),s) -> c_6():7
-->_2 circ#(s,id()) -> c_1():6
-->_2 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_2 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
3:S:circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
-->_1 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_1 circ#(id(),s) -> c_6():7
-->_1 circ#(s,id()) -> c_1():6
-->_1 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_1 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
4:S:circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
-->_1 circ#(id(),s) -> c_6():7
-->_1 circ#(s,id()) -> c_1():6
-->_1 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_1 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_1 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
5:S:msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
-->_1 msubst#(a,id()) -> c_7():8
-->_2 circ#(id(),s) -> c_6():7
-->_2 circ#(s,id()) -> c_1():6
-->_1 msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t)):5
-->_2 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_2 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_2 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_2 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
6:W:circ#(s,id()) -> c_1()
7:W:circ#(id(),s) -> c_6()
8:W:msubst#(a,id()) -> c_7()
9:W:subst#(a,id()) -> c_9()
The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed.
9: subst#(a,id()) -> c_9()
8: msubst#(a,id()) -> c_7()
6: circ#(s,id()) -> c_1()
7: circ#(id(),s) -> c_6()
** Step 1.b:6: PredecessorEstimationCP WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict DPs:
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
PredecessorEstimationCP {onSelectionCP = any intersect of rules of CDG leaf and strict-rules, withComplexityPair = NaturalMI {miDimension = 1, miDegree = 1, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing}}
+ Details:
We first use the processor NaturalMI {miDimension = 1, miDegree = 1, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing} to orient following rules strictly:
1: circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
2: circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
3: circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
4: circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
5: msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
The strictly oriented rules are moved into the weak component.
*** Step 1.b:6.a:1: NaturalMI WORST_CASE(?,O(n^1))
+ Considered Problem:
- Strict DPs:
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
NaturalMI {miDimension = 1, miDegree = 1, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Just first alternative for predecessorEstimation on any intersect of rules of CDG leaf and strict-rules}
+ Details:
We apply a matrix interpretation of kind constructor based matrix interpretation:
The following argument positions are considered usable:
uargs(c_2) = {1,2},
uargs(c_3) = {1,2},
uargs(c_4) = {1},
uargs(c_5) = {1},
uargs(c_8) = {1,2}
Following symbols are considered usable:
{circ#,msubst#,subst#}
TcT has computed the following interpretation:
p(circ) = [1] x1 + [3] x2 + [2]
p(cons) = [1] x1 + [1] x2 + [2]
p(id) = [3]
p(lift) = [0]
p(msubst) = [2] x1 + [4] x2 + [3]
p(subst) = [1] x1 + [0]
p(circ#) = [4] x1 + [2]
p(msubst#) = [2] x1 + [0]
p(subst#) = [2]
p(c_1) = [1]
p(c_2) = [1] x1 + [2] x2 + [1]
p(c_3) = [2] x1 + [1] x2 + [0]
p(c_4) = [1] x1 + [1]
p(c_5) = [1] x1 + [4]
p(c_6) = [1]
p(c_7) = [1]
p(c_8) = [2] x1 + [2] x2 + [0]
p(c_9) = [1]
Following rules are strictly oriented:
circ#(circ(s,t),u) = [4] s + [12] t + [10]
> [4] s + [8] t + [7]
= c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) = [4] a + [4] s + [10]
> [4] a + [4] s + [2]
= c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) = [4] s + [10]
> [4] s + [3]
= c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) = [4] s + [10]
> [4] s + [6]
= c_5(circ#(s,t))
msubst#(msubst(a,s),t) = [4] a + [8] s + [6]
> [4] a + [8] s + [4]
= c_8(msubst#(a,circ(s,t)),circ#(s,t))
Following rules are (at-least) weakly oriented:
*** Step 1.b:6.a:2: Assumption WORST_CASE(?,O(1))
+ Considered Problem:
- Weak DPs:
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
Assumption {assumed = Certificate {spaceUB = Unknown, spaceLB = Unknown, timeUB = Poly (Just 0), timeLB = Unknown}}
+ Details:
()
*** Step 1.b:6.b:1: RemoveWeakSuffixes WORST_CASE(?,O(1))
+ Considered Problem:
- Weak DPs:
circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
RemoveWeakSuffixes
+ Details:
Consider the dependency graph
1:W:circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
-->_2 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_1 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_2 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_2 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_1 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_2 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
-->_1 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
2:W:circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
-->_1 msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t)):5
-->_2 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_2 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_2 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_2 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
3:W:circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
-->_1 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_1 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_1 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
4:W:circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
-->_1 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_1 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_1 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_1 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
5:W:msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
-->_1 msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t)):5
-->_2 circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t)):4
-->_2 circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t)):3
-->_2 circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t)):2
-->_2 circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u)):1
The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed.
1: circ#(circ(s,t),u) -> c_2(circ#(s,circ(t,u)),circ#(t,u))
5: msubst#(msubst(a,s),t) -> c_8(msubst#(a,circ(s,t)),circ#(s,t))
2: circ#(cons(a,s),t) -> c_3(msubst#(a,t),circ#(s,t))
4: circ#(cons(lift(),s),cons(lift(),t)) -> c_5(circ#(s,t))
3: circ#(cons(lift(),s),cons(a,t)) -> c_4(circ#(s,t))
*** Step 1.b:6.b:2: EmptyProcessor WORST_CASE(?,O(1))
+ Considered Problem:
- Weak TRS:
circ(s,id()) -> s
circ(circ(s,t),u) -> circ(s,circ(t,u))
circ(cons(a,s),t) -> cons(msubst(a,t),circ(s,t))
circ(cons(lift(),s),cons(a,t)) -> cons(a,circ(s,t))
circ(cons(lift(),s),cons(lift(),t)) -> cons(lift(),circ(s,t))
circ(id(),s) -> s
msubst(a,id()) -> a
msubst(msubst(a,s),t) -> msubst(a,circ(s,t))
- Signature:
{circ/2,msubst/2,subst/2,circ#/2,msubst#/2,subst#/2} / {cons/2,id/0,lift/0,c_1/0,c_2/2,c_3/2,c_4/1,c_5/1
,c_6/0,c_7/0,c_8/2,c_9/0}
- Obligation:
innermost runtime complexity wrt. defined symbols {circ#,msubst#,subst#} and constructors {cons,id,lift}
+ Applied Processor:
EmptyProcessor
+ Details:
The problem is already closed. The intended complexity is O(1).
WORST_CASE(Omega(n^1),O(n^1))