Nineteenth Annual IEEE Symposium on

Logic in Computer Science (LICS 2004)

Paper: Transition Invariants (at LICS 2004)

Authors: Andreas Podelski Andrey Rybalchenko


Proof rules for program verification rely on auxiliary assertions. We propose a (sound and relatively complete) proof rule whose auxiliary assertions are transition invariants. A transition invariant of a program is a binary relation over program states that contains the transitive closure of the transition relation of the program. A relation is disjunctively well-founded if it is a finite union of well-founded relations. We characterize the validity of termination or another liveness property by the existence of a disjunctively well-founded transition invariant. The main contribution of our proof rule lies in its potential for automation via abstract interpretation.


    author = 	 {Andreas Podelski and Andrey Rybalchenko},
    title = 	 {Transition Invariants},
    booktitle =  {Proceedings of the Nineteenth Annual IEEE Symp. on Logic in Computer Science, {LICS} 2004},
    year =	 2004,
    editor =	 {Harald Ganzinger},
    month =	 {July}, 
    pages =      {32--41},
    location =   {Turku, Finland}, 
    publisher =	 {IEEE Computer Society Press}