---
name: "clasp"
section: "1"
platform: "linux"
package: "clasp"
version: "3.3.5-4.2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/clasp"
---

# clasp(1)

a conflict-driven nogood learning answer set solver

## NAME

clasp - a conflict-driven nogood learning answer set solver

## SYNOPSIS

**clasp** \[*number*\] \[*options*\]

## DESCRIPTION

This manual page documents briefly the **clasp** command.

**clasp** is an answer set solver for (extended) normal logic programs. It combines the high-level modeling capacities of answer set programming (ASP) with state-of-the-art techniques from the area of Boolean constraint solving. The primary clasp algorithm relies on conflict-driven nogood learning, a technique that proved very successful for satisfiability checking (SAT). Unlike other learning ASP solvers, clasp does not rely on legacy software, such as a SAT solver or any other existing ASP solver. Rather, clasp has been genuinely developed for answer set solving based on conflict-driven nogood learning. clasp can be applied as an ASP solver (on LPARSE output format), as a SAT solver (on simplified DIMACS/CNF format), or as a PB solver (on OPB format).

## OPTIONS

These programs follow the usual GNU command line syntax, with long options starting with two dashes (\`-'). A summary of options is included below. For a complete description, see \<http://www.potassco.org/clasp/\>.

- **-h, --help**

  Show summary of options.

- **-v, --version**

  Show version of program.

## SEE ALSO

[**gringo**(1)](/gringo/1.md).\

## AUTHOR

clasp was written by Benjamin Kaufmann \<kaufmann@cs.uni-potsdam.de\>.

This manual page was written by Thomas Krennwallner \<tkren@kr.tuwien.ac.at\>, for the Debian project (and may be used by others).