/export/starexec/sandbox2/solver/bin/starexec_run_complexity /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files


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WORST_CASE(Omega(n^1), ?)
proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml
# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty


The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF).

(0) CpxTRS
(1) RelTrsToDecreasingLoopProblemProof [LOWER BOUND(ID), 0 ms]
(2) TRS for Loop Detection
(3) DecreasingLoopProof [LOWER BOUND(ID), 0 ms]
(4) BEST
    (5) proven lower bound
        (6) LowerBoundPropagationProof [FINISHED, 0 ms]
        (7) BOUNDS(n^1, INF)
    (8) TRS for Loop Detection


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(0)
Obligation:
The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF).


The TRS R consists of the following rules:

   length(nil) -> 0
   length(cons(x, l)) -> s(length(l))
   lt(x, 0) -> false
   lt(0, s(y)) -> true
   lt(s(x), s(y)) -> lt(x, y)
   head(cons(x, l)) -> x
   head(nil) -> undefined
   tail(nil) -> nil
   tail(cons(x, l)) -> l
   reverse(l) -> rev(0, l, nil, l)
   rev(x, l, accu, orig) -> if(lt(x, length(orig)), x, l, accu, orig)
   if(true, x, l, accu, orig) -> rev(s(x), tail(l), cons(head(l), accu), orig)
   if(false, x, l, accu, orig) -> accu

S is empty.
Rewrite Strategy: FULL
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(1) RelTrsToDecreasingLoopProblemProof (LOWER BOUND(ID))
Transformed a relative TRS into a decreasing-loop problem.
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(2)
Obligation:
Analyzing the following TRS for decreasing loops:

The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF).


The TRS R consists of the following rules:

   length(nil) -> 0
   length(cons(x, l)) -> s(length(l))
   lt(x, 0) -> false
   lt(0, s(y)) -> true
   lt(s(x), s(y)) -> lt(x, y)
   head(cons(x, l)) -> x
   head(nil) -> undefined
   tail(nil) -> nil
   tail(cons(x, l)) -> l
   reverse(l) -> rev(0, l, nil, l)
   rev(x, l, accu, orig) -> if(lt(x, length(orig)), x, l, accu, orig)
   if(true, x, l, accu, orig) -> rev(s(x), tail(l), cons(head(l), accu), orig)
   if(false, x, l, accu, orig) -> accu

S is empty.
Rewrite Strategy: FULL
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(3) DecreasingLoopProof (LOWER BOUND(ID))
The following loop(s) give(s) rise to the lower bound Omega(n^1):

The rewrite sequence

lt(s(x), s(y)) ->^+ lt(x, y)

gives rise to a decreasing loop by considering the right hand sides subterm at position [].

The pumping substitution is [x / s(x), y / s(y)].

The result substitution is [ ].




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(4)
Complex Obligation (BEST)

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(5)
Obligation:
Proved the lower bound n^1 for the following obligation:

The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF).


The TRS R consists of the following rules:

   length(nil) -> 0
   length(cons(x, l)) -> s(length(l))
   lt(x, 0) -> false
   lt(0, s(y)) -> true
   lt(s(x), s(y)) -> lt(x, y)
   head(cons(x, l)) -> x
   head(nil) -> undefined
   tail(nil) -> nil
   tail(cons(x, l)) -> l
   reverse(l) -> rev(0, l, nil, l)
   rev(x, l, accu, orig) -> if(lt(x, length(orig)), x, l, accu, orig)
   if(true, x, l, accu, orig) -> rev(s(x), tail(l), cons(head(l), accu), orig)
   if(false, x, l, accu, orig) -> accu

S is empty.
Rewrite Strategy: FULL
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(6) LowerBoundPropagationProof (FINISHED)
Propagated lower bound.
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(7)
BOUNDS(n^1, INF)

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(8)
Obligation:
Analyzing the following TRS for decreasing loops:

The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF).


The TRS R consists of the following rules:

   length(nil) -> 0
   length(cons(x, l)) -> s(length(l))
   lt(x, 0) -> false
   lt(0, s(y)) -> true
   lt(s(x), s(y)) -> lt(x, y)
   head(cons(x, l)) -> x
   head(nil) -> undefined
   tail(nil) -> nil
   tail(cons(x, l)) -> l
   reverse(l) -> rev(0, l, nil, l)
   rev(x, l, accu, orig) -> if(lt(x, length(orig)), x, l, accu, orig)
   if(true, x, l, accu, orig) -> rev(s(x), tail(l), cons(head(l), accu), orig)
   if(false, x, l, accu, orig) -> accu

S is empty.
Rewrite Strategy: FULL