Towards a systematic method for proving termination of graph transformation systems
We describe a method for proving the termination of graph transformation systems. The method is based on the fact that infinite reductions must include infinite 'creation chains', that is chains of edges in different graphs the reduction sequence, such that each edge is involved in creating the next edge. In our approach, the length of such creation chains is recorded by associating with each edge label a creation depth, which denotes the minimal length of a creation chain from an edge in the initial graph to that edge. We develop an algorithm which can prove the absence of such infinite chains (and therefore termination), analyse problems of the approach and propose possible solutions.
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