The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2013
Filed:
Nov. 19, 2010
Takaaki Tateishi, Kanagawa-ken, JP;
Marco Pistoia, Hawthorne, NY (US);
Omer Tripp, Herzelyia, IL;
Ryan Berg, Littleton, MA (US);
Robert Wiener, Littleton, MA (US);
Takaaki Tateishi, Kanagawa-ken, JP;
Marco Pistoia, Hawthorne, NY (US);
Omer Tripp, Herzelyia, IL;
Ryan Berg, Littleton, MA (US);
Robert Wiener, Littleton, MA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An illegal pattern and a computer program having a method are received. The method has one or more return statements, and a number of basic blocks. The method is normalized so that each return statement of the target method relating to the illegal pattern returns a constant Boolean value. A first path condition and a second path condition for one or more corresponding paths is determined such that one or more corresponding basic blocks return a constant Boolean value of true for the first path condition and a constant Boolean value of false for the second path condition. An unsatisfiability of each path condition is determined using a monadic second-order logic (M2L) technique. Where the unsatisfiability of either path condition is false, the method is reported as not being a validator. Where the unsatisfiability of either path condition is true, the method is reported as being a validator.