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


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WORST_CASE(Omega(n^1), ?)
proof of /export/starexec/sandbox/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# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty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) RenamingProof [BOTH BOUNDS(ID, ID), 0 ms]
(2) CpxTRS
(3) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms]
(4) typed CpxTrs
(5) OrderProof [LOWER BOUND(ID), 0 ms]
(6) typed CpxTrs
(7) RewriteLemmaProof [LOWER BOUND(ID), 227 ms]
(8) BEST
    (9) proven lower bound
        (10) LowerBoundPropagationProof [FINISHED, 0 ms]
        (11) BOUNDS(n^1, INF)
    (12) typed CpxTrs
        (13) RewriteLemmaProof [LOWER BOUND(ID), 42 ms]
        (14) typed CpxTrs


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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:

   ge(x, 0) -> true
   ge(0, s(y)) -> false
   ge(s(x), s(y)) -> ge(x, y)
   minus(x, 0) -> x
   minus(0, y) -> 0
   minus(s(x), s(y)) -> minus(x, y)
   id_inc(x) -> x
   id_inc(x) -> s(x)
   div(x, y) -> if(ge(y, s(0)), ge(x, y), x, y)
   if(false, b, x, y) -> div_by_zero
   if(true, false, x, y) -> 0
   if(true, true, x, y) -> id_inc(div(minus(x, y), y))

S is empty.
Rewrite Strategy: FULL
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(1) RenamingProof (BOTH BOUNDS(ID, ID))
Renamed function symbols to avoid clashes with predefined symbol.
----------------------------------------

(2)
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:

   ge(x, 0') -> true
   ge(0', s(y)) -> false
   ge(s(x), s(y)) -> ge(x, y)
   minus(x, 0') -> x
   minus(0', y) -> 0'
   minus(s(x), s(y)) -> minus(x, y)
   id_inc(x) -> x
   id_inc(x) -> s(x)
   div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y)
   if(false, b, x, y) -> div_by_zero
   if(true, false, x, y) -> 0'
   if(true, true, x, y) -> id_inc(div(minus(x, y), y))

S is empty.
Rewrite Strategy: FULL
----------------------------------------

(3) TypeInferenceProof (BOTH BOUNDS(ID, ID))
Infered types.
----------------------------------------

(4)
Obligation:
TRS:
Rules:
ge(x, 0') -> true
ge(0', s(y)) -> false
ge(s(x), s(y)) -> ge(x, y)
minus(x, 0') -> x
minus(0', y) -> 0'
minus(s(x), s(y)) -> minus(x, y)
id_inc(x) -> x
id_inc(x) -> s(x)
div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y)
if(false, b, x, y) -> div_by_zero
if(true, false, x, y) -> 0'
if(true, true, x, y) -> id_inc(div(minus(x, y), y))

Types:
ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false
0' :: 0':s:div_by_zero
true :: true:false
s :: 0':s:div_by_zero -> 0':s:div_by_zero
false :: true:false
minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero
div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
div_by_zero :: 0':s:div_by_zero
hole_true:false1_0 :: true:false
hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero
gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero

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(5) OrderProof (LOWER BOUND(ID))
Heuristically decided to analyse the following defined symbols:
ge, minus, div

They will be analysed ascendingly in the following order:
ge < div
minus < div

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(6)
Obligation:
TRS:
Rules:
ge(x, 0') -> true
ge(0', s(y)) -> false
ge(s(x), s(y)) -> ge(x, y)
minus(x, 0') -> x
minus(0', y) -> 0'
minus(s(x), s(y)) -> minus(x, y)
id_inc(x) -> x
id_inc(x) -> s(x)
div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y)
if(false, b, x, y) -> div_by_zero
if(true, false, x, y) -> 0'
if(true, true, x, y) -> id_inc(div(minus(x, y), y))

Types:
ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false
0' :: 0':s:div_by_zero
true :: true:false
s :: 0':s:div_by_zero -> 0':s:div_by_zero
false :: true:false
minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero
div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
div_by_zero :: 0':s:div_by_zero
hole_true:false1_0 :: true:false
hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero
gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero


Generator Equations:
gen_0':s:div_by_zero3_0(0) <=> 0'
gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x))


The following defined symbols remain to be analysed:
ge, minus, div

They will be analysed ascendingly in the following order:
ge < div
minus < div

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(7) RewriteLemmaProof (LOWER BOUND(ID))
Proved the following rewrite lemma:
ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) -> true, rt in Omega(1 + n5_0)

Induction Base:
ge(gen_0':s:div_by_zero3_0(0), gen_0':s:div_by_zero3_0(0)) ->_R^Omega(1)
true

Induction Step:
ge(gen_0':s:div_by_zero3_0(+(n5_0, 1)), gen_0':s:div_by_zero3_0(+(n5_0, 1))) ->_R^Omega(1)
ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) ->_IH
true

We have rt in Omega(n^1) and sz in O(n). Thus, we have irc_R in Omega(n).
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(8)
Complex Obligation (BEST)

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(9)
Obligation:
Proved the lower bound n^1 for the following obligation:

TRS:
Rules:
ge(x, 0') -> true
ge(0', s(y)) -> false
ge(s(x), s(y)) -> ge(x, y)
minus(x, 0') -> x
minus(0', y) -> 0'
minus(s(x), s(y)) -> minus(x, y)
id_inc(x) -> x
id_inc(x) -> s(x)
div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y)
if(false, b, x, y) -> div_by_zero
if(true, false, x, y) -> 0'
if(true, true, x, y) -> id_inc(div(minus(x, y), y))

Types:
ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false
0' :: 0':s:div_by_zero
true :: true:false
s :: 0':s:div_by_zero -> 0':s:div_by_zero
false :: true:false
minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero
div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
div_by_zero :: 0':s:div_by_zero
hole_true:false1_0 :: true:false
hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero
gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero


Generator Equations:
gen_0':s:div_by_zero3_0(0) <=> 0'
gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x))


The following defined symbols remain to be analysed:
ge, minus, div

They will be analysed ascendingly in the following order:
ge < div
minus < div

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(10) LowerBoundPropagationProof (FINISHED)
Propagated lower bound.
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(11)
BOUNDS(n^1, INF)

----------------------------------------

(12)
Obligation:
TRS:
Rules:
ge(x, 0') -> true
ge(0', s(y)) -> false
ge(s(x), s(y)) -> ge(x, y)
minus(x, 0') -> x
minus(0', y) -> 0'
minus(s(x), s(y)) -> minus(x, y)
id_inc(x) -> x
id_inc(x) -> s(x)
div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y)
if(false, b, x, y) -> div_by_zero
if(true, false, x, y) -> 0'
if(true, true, x, y) -> id_inc(div(minus(x, y), y))

Types:
ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false
0' :: 0':s:div_by_zero
true :: true:false
s :: 0':s:div_by_zero -> 0':s:div_by_zero
false :: true:false
minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero
div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
div_by_zero :: 0':s:div_by_zero
hole_true:false1_0 :: true:false
hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero
gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero


Lemmas:
ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) -> true, rt in Omega(1 + n5_0)


Generator Equations:
gen_0':s:div_by_zero3_0(0) <=> 0'
gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x))


The following defined symbols remain to be analysed:
minus, div

They will be analysed ascendingly in the following order:
minus < div

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(13) RewriteLemmaProof (LOWER BOUND(ID))
Proved the following rewrite lemma:
minus(gen_0':s:div_by_zero3_0(n263_0), gen_0':s:div_by_zero3_0(n263_0)) -> gen_0':s:div_by_zero3_0(0), rt in Omega(1 + n263_0)

Induction Base:
minus(gen_0':s:div_by_zero3_0(0), gen_0':s:div_by_zero3_0(0)) ->_R^Omega(1)
gen_0':s:div_by_zero3_0(0)

Induction Step:
minus(gen_0':s:div_by_zero3_0(+(n263_0, 1)), gen_0':s:div_by_zero3_0(+(n263_0, 1))) ->_R^Omega(1)
minus(gen_0':s:div_by_zero3_0(n263_0), gen_0':s:div_by_zero3_0(n263_0)) ->_IH
gen_0':s:div_by_zero3_0(0)

We have rt in Omega(n^1) and sz in O(n). Thus, we have irc_R in Omega(n).
----------------------------------------

(14)
Obligation:
TRS:
Rules:
ge(x, 0') -> true
ge(0', s(y)) -> false
ge(s(x), s(y)) -> ge(x, y)
minus(x, 0') -> x
minus(0', y) -> 0'
minus(s(x), s(y)) -> minus(x, y)
id_inc(x) -> x
id_inc(x) -> s(x)
div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y)
if(false, b, x, y) -> div_by_zero
if(true, false, x, y) -> 0'
if(true, true, x, y) -> id_inc(div(minus(x, y), y))

Types:
ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false
0' :: 0':s:div_by_zero
true :: true:false
s :: 0':s:div_by_zero -> 0':s:div_by_zero
false :: true:false
minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero
div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero
div_by_zero :: 0':s:div_by_zero
hole_true:false1_0 :: true:false
hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero
gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero


Lemmas:
ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) -> true, rt in Omega(1 + n5_0)
minus(gen_0':s:div_by_zero3_0(n263_0), gen_0':s:div_by_zero3_0(n263_0)) -> gen_0':s:div_by_zero3_0(0), rt in Omega(1 + n263_0)


Generator Equations:
gen_0':s:div_by_zero3_0(0) <=> 0'
gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x))


The following defined symbols remain to be analysed:
div