Shanghai Univ, United Nat Univ Int Inst Software Technol, Natl Nat Sci     Fdn China, China Comp Federat, China Software Ind Assoc, Shanghai Comp     Assoc, E China Normal UnivLTLC is a continuous-time linear temporal logic for the specification     of real-time systems. It can express both the properties and the     implementations of real-time systems. With LTLC, real-time systems can     be described at many levels of abstr