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TRS Stand 20472 pair #381709900
details
property
value
status
complete
benchmark
enger-nonloop-swap_decr.xml
ran by
Akihisa Yamada
cpu timeout
1200 seconds
wallclock timeout
300 seconds
memory limit
137438953472 bytes
execution host
n052.star.cs.uiowa.edu
space
EEG_IJCAR_12
run statistics
property
value
solver
Wanda
configuration
FirstOrder
runtime (wallclock)
0.212550878525 seconds
cpu usage
0.203912085
max memory
7213056.0
stage attributes
key
value
output-size
1430
starexec-result
MAYBE
output
/export/starexec/sandbox2/solver/bin/starexec_run_FirstOrder /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- MAYBE We consider the system theBenchmark. We are asked to determine termination of the following first-order TRS. 0 : [] --> o decr : [o] --> o f : [o * o] --> o s : [o] --> o swap : [o * o] --> o tt : [] --> o f(tt, X) => f(swap(X, 0), s(X)) swap(s(X), Y) => swap(X, s(Y)) swap(0, s(X)) => decr(s(X)) decr(s(X)) => decr(X) decr(0) => tt As the system is orthogonal, it is terminating if it is innermost terminating by [Gra95]. Then, by [FuhGieParSchSwi11], it suffices to prove (innermost) termination of the typed system, with sort annotations chosen to respect the rules, as follows: 0 : [] --> pa decr : [pa] --> va f : [va * pa] --> t s : [pa] --> pa swap : [pa * pa] --> va tt : [] --> va +++ Citations +++ [FuhGieParSchSwi11] C. Fuhs, J. Giesl, M. Parting, P. Schneider-Kamp, and S. Swiderski. Proving Termination by Dependency Pairs and Inductive Theorem Proving. In volume 47(2) of Journal of Automated Reasoning. 133--160, 2011. [Gra95] B. Gramlich. Abstract Relations Between Restricted Termination and Confluence Properties of Rewrite Systems. In volume 24(1-2) of Fundamentae Informaticae. 3--23, 1995.
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