Lucas Alba, Salvador; Meseguer, José(Springer Verlag (Germany), 2014-11)
The notion of *operational termination* captures nonterminating computations due to subsidiary processes that are necessary to issue a *single* `main' step but which often remain `hidden' when the main computation sequence ...
Lucas Alba, Salvador; Gutiérrez Gil, Raúl(Springer-Verlag, 2018)
[EN] In program analysis, the synthesis of models of logical theories representing the program semantics is often useful to prove program properties. We use order-sorted first- order logic as an appropriate framework to ...
Restrictions of rewriting may turn normal forms of some terms unreachable, leading to
incomplete computations. Context-sensitive rewriting (csr) is the restriction of rewriting that
only permits reductions on arguments ...
Lucas Alba, Salvador(Association for Computing Machinery, 2020-09)
[EN] The appropriate selection of the arguments of functions that can be evaluated in function calls is often useful to improve efficiency, speed, termination behavior, and so on. This is essential, e.g., in the conditional ...
Lucas Alba, Salvador; Meseguer, José(Elsevier, 2017-01)
[EN] The notion of operational termination provides a logic-based definition of termination of computational systems as the absence of infinite inferences in the computational logic describing the operational semantics of ...
Gutiérrez Gil, Raúl; Lucas Alba, Salvador(Universitat Politècnica de València, 2015-05-26)
Context-sensitive rewriting (CSR) is a variant of rewriting where only selected arguments of function symbols can be rewritten. Consequently, the subterm positions of a term are classified as either active, i.e., positions ...
Fresneda González, Sergio(Universitat Politècnica de València, 2017-10-27)
Personal mobile devices like smartwatches, smartphones, tablets, etc., are just small computers with a computing performance which is similar to last-decade desktop computers. In sharp contrast, though, mobile devices ...
Alarcón Jiménez, Beatriz(Universitat Politècnica de València, 2011-11-28)
Innermost context-sensitive rewriting (CSR) has been proved useful for modeling the computational behavior of programs of algebraic languages like Maude. We adapt the Dependency Pairs Framework to innermost CSR since, up ...
Reinoso Mendoza, Efren Patricio(Universitat Politècnica de València, 2016-12-07)
[EN]
In Computer Science and Software Engineering, even at this time, when huge hardware and software resources are available, the problem of checking correctness of an speciﬁc piece of software is a very complicated one. ...
Lucas Alba, Salvador; Meseguer, José(Springer Verlag (Germany), 2014)
Reasoning about termination of declarative programs, which are described by means of a computational logic, requires the definition of appropriate abstractions as semantic models of the logic, and also handling the conditional ...
Lucas Alba, Salvador; Meseguer, Jose(Elsevier, 2016-01)
We present several new concepts and results on conditional term rewriting within the general framework of order-sorted rewrite theories (OSRTs), which support types, subtypes and rewriting modulo axioms, and contains the ...
Lucas Alba, Salvador; Meseguer, José(ACM, 2014-09)
A declarative program P is a *theory* in a given computational logic L, so that *computation* with such a program is efficiently implemented as *deduction* in L. That is why *inference systems* are crucial: they both (i) ...
[EN] The semantics of computational systems (e.g., relational and knowledge data bases, query-answering systems, programming languages, etc.) can often be expressed as (the specification of) a logical theory Th. Queries, ...
Polynomial constraint solving plays a prominent role in several areas of hardware and software analysis and verification, e.g.; termination proving, program invariant generation and hybrid system verification, to name a ...
Navarro Marset, Rafael Andrés(Universitat Politècnica de València, 2011-11-28)
A termination problem can be transformed into a set of polynomial constraints. Up to now, several approaches have been studied to deal with these constraints as constraint solving problems. In this thesis, we study in depth ...
Lucas Alba, Salvador; Meseguer, José(Springer Verlag (Germany), 2014-11)
This paper presents several new results on conditional term rewriting within the general framework of order-sorted rewrite theories (OSRTs) which contains the more restricted framework of conditional term rewriting systems ...
[EN] Recent developments in termination analysis for declarative programs emphasize the use of appropriate models for the logical theory representing the program at stake as a generic approach to prove termination of ...
Arnal Julián, Salvador(Universitat Politècnica de València, 2014-11-18)
[EN] This thesis presents the implementation of a framework to work with term rewriting
systems. Term rewriting systems provide a complete computational model which is very
close to functional programming. Its formulation ...
[EN] Termination of programs, i.e., the absence of infinite computations, ensures the existence of normal forms for all initial expressions, thus providing an essential ingredient for the definition of a normalization ...