Reasoning about Termination of Pure Prolog Programs

Reasoning about Termination of Pure Prolog Programs (1993)

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by Krzysztof R. Apt , Dino Pedreschi

Venue:	Information and Computation
Citations:	117 - 14 self

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Datum	Value	Source
TITLE	Reasoning about Termination of Pure Prolog Programs	user correction - Legacy Corrections
AUTHOR NAME	Krzysztof R. Apt	SVM HeaderParse 0.2
AUTHOR AFFIL	; Centre for Mathematics and Computer Science; and; Faculty of Mathematics and Computer Science; University of	SVM HeaderParse 0.2
AUTHOR ADDR	; Kruislaan 413, 1098 SJ Amsterdam, The Netherlands; Amsterdam, Plantage Muidergracht 24; 1018 TV Amsterdam, The Netherlands	SVM HeaderParse 0.2
AUTHOR NAME	Dino Pedreschi	SVM HeaderParse 0.2
AUTHOR AFFIL	Dipartimento di Informatica, Universit`a di Pisa	SVM HeaderParse 0.2
AUTHOR ADDR	Corso Italia 40, 56125 Pisa, Italy	SVM HeaderParse 0.2
ABSTRACT	We provide a theoretical basis for studying termination of (general) logic programs with the Prolog selection rule. To this end we study the class of left terminating programs. These are logic programs that terminate with the Prolog selection rule for all ground goals. We offer a characterization of left terminating positive programs by means of the notion of an acceptable program that provides us with a practical method of proving termination. The method is illustrated by giving a simple proof of termination of the quicksort program for the desired class of goals. Then we extend this approach to the class of general logic programs by modifying the concept of acceptability. We prove that acceptable general programs are left terminating. The converse implication does not hold but we show that under the assumption of nonfloundering from ground goals every left terminating general program is acceptable. Finally, we prove that various ways of defining semantics coincide for acceptable gen...	user correction - Legacy Corrections
YEAR	1993	INFERENCE
VENUE	Information and Computation	INFERENCE
VENUE TYPE	JOURNAL	INFERENCE
PAGES	109--157	INFERENCE
VOLUME	106	INFERENCE
CITATIONS	28 found	ParsCit 1.0