Symbolic Program Analysis in Almost-Linear Time

Symbolic Program Analysis in Almost-Linear Time

Conference Record of the Fifth Annual Acm Symposium on Principles of Programming Language? Abstract Symbolic Program Analysis in Almost Linear Time

SYMBOLIC PROGRAM ANALYSIS IN ALMOST LINEAR TIME John H. Reif Department of Computer Science The University of Rochester A global flow model is assumed; as usual, the flow of control is represented by a digraph called the control flow graph. The objective of our program analysis is the construction of a mapping (a cover) from program text expressions to symbolic expressions for their value holdi...

Building PQR trees in almost-linear time

In 1976, Booth and Leuker invented the PQ trees as a compact way of storing and manipulating all the permutations on n elements that keep consecutive the elements in certain given sets C1, C2, . . . , Cm. Such permutations are called valid. This problem finds applications in DNA physical mapping, interval graph recognition, logic circuit optimization and data retrieval, among others. PQ trees c...

Program Analysis Using Symbolic Ranges

Interval analysis seeks static lower and upper bounds on the values of program variables. These bounds are useful, especially for inferring invariants to prove buffer overflow checks. In practice, however, intervals by themselves are often inadequate as invariants due to the lack of relational information among program variables. In this paper, we present a technique for deriving symbolic bound...

a swot analysis of the english program of a bilingual school in iran

با توجه به جایگاه زبان انگلیسی به عنوان زبانی بین المللی و با در نظر گرفتن این واقعیت که دولت ها و مسئولان آموزش و پرورش در سراسر جهان در حال حاضر احساس نیاز به ایجاد موقعیتی برای کودکان جهت یاد گیری زبان انگلیسی درسنین پایین در مدارس دو زبانه می کنند، تحقیق حاضر با استفاده از مدل swot (قوت ها، ضعف ها، فرصتها و تهدیدها) سعی در ارزیابی مدرسه ای دو زبانه در ایران را دارد. جهت انجام این تحقیق در م...