发明授权
US06728665B1 SAT-based image computation with application in reachability analysis 有权
基于SAT的图像计算应用于可达性分析

  • 专利标题: SAT-based image computation with application in reachability analysis
  • 专利标题(中): 基于SAT的图像计算应用于可达性分析
  • 申请号: US09693979
    申请日: 2000-10-23
  • 公开(公告)号: US06728665B1
    公开(公告)日: 2004-04-27
  • 发明人: Aarti GuptaZijiang YangPranav Ashar
  • 申请人: Aarti GuptaZijiang YangPranav Ashar
  • 主分类号: G06F710
  • IPC分类号: G06F710
SAT-based image computation with application in reachability analysis
摘要:
A method of performing image or pre-image computation for a system is disclosed. The method comprises representing the system by a finite state model; representing state sets using Binary Decision Diagrams (BDDs); performing a satisfiabilty checking (SAT) based backtrack search algorithm, wherein, the SAT decomposes the search over an entire solution space into multiple sub-problems, and wherein a BDD-based image computation is used to solve each sub-problem by enumerating multiple solutions from the solution space. Further, a method for pruning a search space in a SAT procedure is disclosed. The method comprises using BDD Bounding against an implicit disjunction or conjunction of a given set of BDDs; continuing search if a partial assignment of variables satisfies the implicit disjunction or conjunction, and backtracking if a partial assignment of variables does not satisfy the implicit disjunction or conjunction.
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