On the Minimization Problem for Sequential Programs

First-order program schemata is one of the simplest models of sequential imperative programs intended for solving verification and optimization problems. We consider the decidable relation of logical-thermal equivalence of these schemata and the problem of their size minimization while preserving lo...

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Main Authors: Vladimir A. Zakharov, Shynar R. Zhailauova
Format: Article
Language:English
Published: Yaroslavl State University 2017-08-01
Series:Моделирование и анализ информационных систем
Subjects:
Online Access:https://www.mais-journal.ru/jour/article/view/532
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author Vladimir A. Zakharov
Shynar R. Zhailauova
author_facet Vladimir A. Zakharov
Shynar R. Zhailauova
author_sort Vladimir A. Zakharov
collection DOAJ
description First-order program schemata is one of the simplest models of sequential imperative programs intended for solving verification and optimization problems. We consider the decidable relation of logical-thermal equivalence of these schemata and the problem of their size minimization while preserving logical-thermal equivalence. We prove that this problem is decidable. Further we show that the first-order program schemata supplied with logical-thermal equivalence and finite state deterministic transducers operating over substitutions are mutually translated into each other. This relationship implies that the equivalence checking problem and the minimization problem for these transducers are also decidable. In addition, on the basis of the discovered relationship, we have found a subclass of firstorder program schemata such that their minimization can be performed in polynomial time by means of known techniques for minimization of finite state transducers operating over semigroups. Finally, we demonstrate that in general case the minimization problem for finite state transducers over semigroups may have several non-isomorphic solutions.
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spelling doaj.art-e0f88eb508854fa59a02e306045141f02023-03-13T08:07:29ZengYaroslavl State UniversityМоделирование и анализ информационных систем1818-10152313-54172017-08-0124441543310.18255/1818-1015-2017-4-415-433378On the Minimization Problem for Sequential ProgramsVladimir A. Zakharov0Shynar R. Zhailauova1Национальный исследовательский университет "Высшая школа экономики"Московский государственный университет им. М.В. ЛомоносоваFirst-order program schemata is one of the simplest models of sequential imperative programs intended for solving verification and optimization problems. We consider the decidable relation of logical-thermal equivalence of these schemata and the problem of their size minimization while preserving logical-thermal equivalence. We prove that this problem is decidable. Further we show that the first-order program schemata supplied with logical-thermal equivalence and finite state deterministic transducers operating over substitutions are mutually translated into each other. This relationship implies that the equivalence checking problem and the minimization problem for these transducers are also decidable. In addition, on the basis of the discovered relationship, we have found a subclass of firstorder program schemata such that their minimization can be performed in polynomial time by means of known techniques for minimization of finite state transducers operating over semigroups. Finally, we demonstrate that in general case the minimization problem for finite state transducers over semigroups may have several non-isomorphic solutions.https://www.mais-journal.ru/jour/article/view/532последовательная программаавтомат-преобразовательминимизацияподстановкаполугруппаэквивалентность
spellingShingle Vladimir A. Zakharov
Shynar R. Zhailauova
On the Minimization Problem for Sequential Programs
Моделирование и анализ информационных систем
последовательная программа
автомат-преобразователь
минимизация
подстановка
полугруппа
эквивалентность
title On the Minimization Problem for Sequential Programs
title_full On the Minimization Problem for Sequential Programs
title_fullStr On the Minimization Problem for Sequential Programs
title_full_unstemmed On the Minimization Problem for Sequential Programs
title_short On the Minimization Problem for Sequential Programs
title_sort on the minimization problem for sequential programs
topic последовательная программа
автомат-преобразователь
минимизация
подстановка
полугруппа
эквивалентность
url https://www.mais-journal.ru/jour/article/view/532
work_keys_str_mv AT vladimirazakharov ontheminimizationproblemforsequentialprograms
AT shynarrzhailauova ontheminimizationproblemforsequentialprograms