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This paper provides a detailed description of the CNF part of the TPTP Problem Library for automated theorem-proving systems. The library is available via the Internet and forms a common basis for development and experimentation with automated theorem provers. This paper explains the motivations and reasoning behind the development of the TPTP (thus(More)
This paper describes the First-Order Form (FOF) and Clause Normal Form (CNF) parts of the TPTP problem library, and the associated infrastructure. TPTP v3.5.0 was the last release containing only FOF and CNF problems, and thus serves as the exemplar. This paper summarizes the history and development of the TPTP, describes the structure and contents of the(More)
Researchers who make theoretical advances also need some way to demonstrate that an advance really does have general, overall positive consequences for system performance. For this it is necessary to evaluate the system on a set of problems that is sufficiently large and diverse to be somehow representative of the intended application area as a whole. It is(More)
We present results of our work on using first order theorem proving to reason over a large ontology (the Suggested Upper Merged Ontology – SUMO), and methods for making SUMO suitable for first order theorem proving. We describe the methods for translating into standard first order format, as well as optimizations that are intended to improve inference(More)
We introduce StarExec, a public web-based service built to facilitate the experimental evaluation of logic solvers, broadly understood as automated tools based on formal reasoning. Examples of such tools include theorem provers, SAT and SMT solvers, constraint solvers, model checkers, and software verifiers. The service, running on a compute cluster with(More)
The CADE ATP System Competition (CASC) is an annual evaluation of fully automatic, first order Automated Theorem Proving systems – the world championship for such systems. This paper captures the state of CASC after CASC-20, the tenth CASC, held in 2005. It provides a summarized history of CASC, details of the current design of the competition, observations(More)
A key concern of ATP research is the development of more powerful systems, capable of solving more difficult problems within the same resource limits. In order to build more powerful systems, it is important to understand which systems, and hence which techniques, work well for what types of problems. This paper deals with the empirical evaluation of(More)