Provided by: depqbf_5.01-3_amd64

**NAME**

depqbf - a solver for quantified boolean formulae

**SYNOPSIS**

depqbf[options...] [NUM] [FILE]

**DESCRIPTION**

depqbfis a search-based solver for quantified boolean formulae (QBF) in prenex conjunctive normal form. It is based on the DPLL algorithm for QBF with conflict-driven clause and solution-driven cube learning. By analyzing the structure of a formula, DepQBF tries to identify independent variables. In addition to other benefits, this often increases freedom for decision making. See also the JSAT system description of DepQBF 0.1 from QBFEVAL'10 for references and a brief outline of the idea.depqbfreads QBF formulas in QDIMACS format. IfFILEis not given, it reads its input from stdin. It complies with input/output standards as required by QBFEVAL'10.

**OPTIONS**

depqbfaccepts the following options:-h,--helpPrint usage information.--versionPrint version.--pretty-printOnly parse and print formula.-vIncrease verbosity incrementally.NUMOptional: time-out after NUM seconds.FILEOptional: read input from FILE.

**EXIT** **STATUS**

The exit status is 10 if the QBF formula given as input is satisfiable, and 20 if it is unsatisfiable; any other exit code indicates that the formula was not solved.

**SEE** **ALSO**

picosat(1),minisat(1),clasp(1).

**AUTHOR**

depqbf was written by Florian Lonsing <florian.lonsing@jku.at>. This manual page was written by Thomas Krennwallner <tkren@kr.tuwien.ac.at>, August 26, 2011 DEPQBF(1)