The TPTP Problem Library

by  Geoff Sutcliffe geoff@cs.miami.edu  and  Christian Suttner christian@suttner.info 
The TPTP (Thousands of Problems for Theorem Provers) is a library of test problems for automated theorem proving (ATP) systems. The TPTP supplies the ATP community with:
The principal motivation for the TPTP is to support the testing and evaluation of ATP systems, to help ensure that performance results accurately reflect capabilities of the ATP systems being considered. A common library of problems is necessary for meaningful system evaluations, meaningful system comparisons, repeatability of testing, and the production of statistically significant results. The TPTP is such a library.
If you're new to all this, you might want to start at the TPTP and TSTP Quick Guide. 
The TPTP Needs Money  If your work benefits from use of the TPTP and related projects, consider making an annual cash donation of 100 units of a reasonable currency, to support the TPTP. A donation can be made as an unrestricted gift (tax deductable) to the University of Miami, explicitly to support the TPTP and related projects. Read about the benefits and process of making a donation. You can donate right now, online with a credit card. A premium support contract is also available. 
The current release of the TPTP Library is TPTPv6.2.0 (Tue Jul 14 10:21:30 EDT 2015)  
Download package, 563MB, expands to 6.2GB.
(Contains the problems, axiom sets, documents, and utilities.) Also available from Fink, thanks to Jesse Alama.  
Online access to:  
Basic information.  
Individual problems.  
Individual axiom sets.  
All the TPTP documents  
History of changes to the TPTP and the archive of previous versions.  
Online access to the tptp2T utility.  
 
Current information, available only online:  
Bugged problems list (Bugs found in the current version)  
Details about the TPTP. Read this whenever you have a question about the TPTP.  
The very latest hyperlinked BNF for the TPTP language.  
 
TPTP subprojects:  
Services for solving problems and recommending systems.  
The TSTP (Thousands of Solutions from Theorem Provers) Solution Library is a library of solutions to test problems for automated theorem proving (ATP) systems. In particular, it contains solutions to TPTP problems.  
The TMTP (Thousands of Models for Theorem Provers) Model Library is a library of models of axiomatizations for automated theorem proving (ATP) systems. In particular, it contains models for TPTP axiomatizations.  
The TPTP is used to supply problems for the CADE ATP System Competition.  
 We are working on new features for the TPTP, as explained in the following proposals. Comments from potential users will be appreciated. 
 
 Many people have written software for processing TPTP format data.
These links point to software I know of (please send your link
if you have some software to add to the list).

 If you would like to cite the TPTP, please use:
@Article{SS98, Author = "Sutcliffe, G.", Year = "2009", Title = "{The TPTP Problem Library and Associated Infrastructure: The FOF and CNF Parts, v3.5.0}", Journal = "Journal of Automated Reasoning", Volume = "43", Number = "4", Pages = "337362" }We are collecting references for papers that cite the TPTP. If you have cited the TPTP in any of your work that is not yet included, we'd like to add your reference.

This approximatelyannual meeting is used to to discuss the TPTP and related issues.  
 
Other people are doing similar things for other types of ATP problems:  
Benchmark verification tasks in software verification, as used in SVCOMP.  
This website features a series of notebooks presenting some of Larry Wos’s most recent and hitherto unpublished research in automated reasoning (also in 1st order logic).  
The major goal of SMTLIB is to establish a library of benchmarks for Satisfiability Modulo Theories, that is, satisfiability of formulas with respect to background theories for which specialized decision procedures exist.  
The Quantified Modal Logics Theorem Proving (QMLTP) library provides a platform for testing and benchmarking automated theorem proving (ATP) systems for firstorder modal logics.  
The Dozens of Problems for Partial Deduction (DPPD) Library of Benchmarks aims at being a standard suite of benchmarks for partial deduction.  
An environment for submitting and archiving benchmarking AnswerSet Programming (ASP) problems and instances, in which ASP systems can be run under equal and reproducible conditions, leading to independent results.  
The Intuitionistic Logic Theorem Proving (ILTP) library provides a platform for testing and benchmarking automated theorem proving (ATP) systems for firstorder and propositional intuitionistic logic.  
The Termination Problems Database is a library of test problems for termination provers. Currently, it includes termination problems for term rewrite systems and logic programs.  
A benchmark library of problems for the constraints community. The main motivation for CSPLib is to focus research in constraints away from purely random problems and onto more structured problems.  
A collection of test data sets for a variety of Operations Research (OR) problems.  
The Project Scheduling Problem Library.  
The graph matching library, developed mainly to test the VF graph matching algorithm, and to compare it with other known algorithms.  
A collection of induction challenge problems.  
A collection of benchmark problems, solvers, and tools for SAT related research.  
Experiments and execution traces of SAT solvers, on all benchmarks that are provided.  
QBFLIB is a collection of benchmark problems, solvers, and tools related to Quantified Boolean Formula (QBF) satisfiability. 