Merging behavior specifications

This paper describes a method for merging behavior specifications modeled by transition systems. Given two behavior specificationsB1 andB2, Merge (B1,B2) defines a new behavior specification that extendsB1 andB2. Moreover, provided that a necessary and sufficient condition holds, Merge(B1,B2) is a cyclic extension ofB1 andB2. In other words, Merge (B1,B2) extendsB1 andB2, and any cyclic trace inB1 orB2 remains a cyclic in Merge(B1,B2). Therefore, in the case of cyclic traces ofB1 orB2, Merge(B1,B2) transforms into Merge(B1,B2), and may exhibit, in a recursive manner, behaviors ofB1 andB2. If Merge(B1,B2) is a cyclic extension ofB1 andB2, then Merge(B1,B2) represents the least common cyclic extension ofB1 andB2. This approach is useful for the extension and integration of system specifications.

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