  We study the LTL model-checking in possibilistic Kripke structure using
possibility measure. First, the notion of possibilistic Kripke structure and
the related possibility measure are introduced, then model-checking of
reachability and repeated reachability linear-time properties in finite
possibilistic Kripke structure are studied. Standard safety property and
-regular property in possibilistic Kripke structure are introduced, the
verification of regular safety property and -regular property using finite
automata are thoroughly studied. It has been shown that the verification of
regular safety property and -regular property in finite possibilistic Kripke
structure can be transformed into the verification of reachability property and
repeated reachability property in the product possibilistic Kripke structure
introduced in this paper. Several examples are given to illustrate the methods
presented in the paper.
