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The New WALDMEISTER Loop at Work

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons44621

Hillenbrand,  Thomas
International Max Planck Research School, MPI for Informatics, Max Planck Society;
Automation of Logic, MPI for Informatics, Max Planck Society;
Programming Logics, MPI for Informatics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons44934

Löchner,  Bernd
Programming Logics, MPI for Informatics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons44050

Baader,  Franz
Programming Logics, MPI for Informatics, Max Planck Society;

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Zitation

Gaillourdet, J.-M., Hillenbrand, T., Löchner, B., & Spies, H. (2003). The New WALDMEISTER Loop at Work. In Automated deduction, CADE-19: 19th International Conference on Automated Deduction (pp. 317-321). Berlin, Germany: Springer.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-2E5A-7
Zusammenfassung
We present recent developments within the theorem prover \textsc{Waldmeister}. They rely on a novel organization of the underlying saturation-based proof procedure into a system architecture. As is known, the saturation process tends to quickly fill the memory available unless preventive measures are employed. To overcome this problem, our new ``\textsc{Waldmeister} loop'' features a highly compact representation of the search state, exploiting its inherent structure. The implementation just being available, the cost and the benefits of the concept now can exactly be measured. Indeed are our expectations met concerning the drastic cut-down of memory usage with only moderate overhead of time. In addition it has turned out that the revealed structure of the search state paves the way to an easily implemented parallelization of the prover with modest communication requirements and rewarding speed-ups. In order to minimize communication-related latencies, we discuss some variations of the loop to maximally profit from multiple processors.