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:
Dec. 09, 2014
Filed:
Aug. 02, 2011
Alexander Ivrii, Haifa, IL;
Arie Matsliah, Haifa, IL;
Alexander Ivrii, Haifa, IL;
Arie Matsliah, Haifa, IL;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Candidate invariants are selected from a proof of a property. In some exemplary embodiments, a proof of a property with respect to a bounded model having a bounded number of cycles may be obtained. The bounded model may comprise an initial axiom and a transition relation axiom. The proof of the property is a Directed Acyclic Graph (DAG). Each non-leaf node of the DAG is deducible from its child nodes. A root of the DAG is the property. Leaves of the DAG are associated with an axiom of the bounded model. A set of candidate invariants may be selected from the DAG. A subset of the set of candidates may be determined such that the subset comprises invariants which are held during each cycle of an unbounded model, wherein the unbounded model is an unbounded version of the bounded model. The invariants may be utilized for model checking of the unbounded model.