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HRS union beta 16688 pair #381734313
details
property
value
status
complete
benchmark
curry1.xml
ran by
Akihisa Yamada
cpu timeout
1200 seconds
wallclock timeout
300 seconds
memory limit
137438953472 bytes
execution host
n036.star.cs.uiowa.edu
space
Mixed_HO_10
run statistics
property
value
solver
Wanda
configuration
HigherOrder
runtime (wallclock)
0.0156741142273 seconds
cpu usage
0.011869421
max memory
1073152.0
stage attributes
key
value
output-size
1439
starexec-result
YES
output
/export/starexec/sandbox2/solver/bin/starexec_run_HigherOrder /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES We consider the system theBenchmark. Alphabet: f : [] --> a -> b -> c f1 : [a] --> b -> c f2 : [a * b] --> c Rules: f1(x) => f x f2(x, y) => f1(x) y This AFS is converted to an AFSM simply by replacing all free variables by meta-variables (with arity 0). We use rule removal, following [Kop12, Theorem 2.23]. This gives the following requirements (possibly using Theorems 2.25 and 2.26 in [Kop12]): f1(X) >? f(X) f2(X, Y) >? f1(X) Y We orient these requirements with a polynomial interpretation in the natural numbers. The following interpretation satisfies the requirements: f = \y0y1.y0 f1 = \y0y1.1 + y0 f2 = \y0y1.3 + 3y0 + 3y1 Using this interpretation, the requirements translate to: [[f1(_x0)]] = \y0.1 + x0 > \y0.x0 = [[f(_x0)]] [[f2(_x0, _x1)]] = 3 + 3x0 + 3x1 > 1 + x0 + x1 = [[f1(_x0) _x1]] We can thus remove the following rules: f1(X) => f(X) f2(X, Y) => f1(X) Y All rules were succesfully removed. Thus, termination of the original system has been reduced to termination of the beta-rule, which is well-known to hold. +++ Citations +++ [Kop12] C. Kop. Higher Order Termination. PhD Thesis, 2012.
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