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pd4 - An Extension of d4 for Projected d-DNNF Compilation

How to Compile

Dependencies

This repository includes several sub-repositories. So, make sure to clone the repository with:

$ git clone --recurse-submodules <GIT-URL>

In addition, all of the listed dependencies are required to compile pd4.

  • Build system
    • cmake (Version >= 3.1)
    • ninja
    • gcc/g++
  • Libraries
    • zlib
    • m4
    • gmp
    • boost (static)
    • hwloc
    • lzma
    • bzip2
    • libstd
    • tbb

Building

To build the project execute the build script which also handles building the submodules.

$ ./build.sh

The executable is called d4 and is in the build repository.

Running

Input Format

The input format for projected d-DNNF compilation is DIMACS with an established extension for projected variables. With the extension, the second line indicates the variable to keep during the projection. Invoking pd4 with the listed input will provide a projected d-DNNF only with the variables 1 2 3.

p cnf 4 3
c p show 1 2 3 0
3 1 2 0
−2 1 3 0
2 −3 2 4 0

Command

This command produces a projected d-DNNF for the input file input.cnf and stores it in output.nnf

./build/d4 -i input.cnf -m proj-ddnnf-compiler --dump-ddnnf output.nnf

Display overview on commands and available options

$ ./build/d4 -h