Below is an example of {{{run}}} script for the System Competition. The script pipes input towards the DLV solver (you might replace with your own) and outputs data in the competition format. {{{ #!/usr/bin/env bash set -o pipefail # Disable output buffering if [ $# -ne 3 ]; then echo "This script must be invoked with three parameters!" exit fi MAXINT=$1 MAX_NESTING_LEVEL=$2 # NOTE: MAX_NESTING_LEVEL is not used in this version of DLV OUTPUT_PREDICATES=$3 SCRIPTDIR=`dirname $0` BIN=$SCRIPTDIR/dlv.i386-linux-elf-static.bin # Execution with preprocessing and postprocessing: $SCRIPTDIR/preprocess.pl | $BIN -N=$MAXINT -filter=$OUTPUT_PREDICATES -n=1 -silent -- | $SCRIPTDIR/postprocess.pl ECODE=$? if [ $ECODE -ne 0 ]; then echo UNKNOWN; fi exit $ECODE }}} Note that {{{DLV}}} is invoked after a pre-processing perl script. The output of {{{DLV}}} is then processed by a perl post-processing script. Your binary executable might not require a pre-processing script, in which case the following instruction can be used in the script: {{{ # Execution with postprocessing only: $BIN -N=$MAXINT -filter=$OUTPUT_PREDICATES -n=1 -silent -- | $SCRIPTDIR/postprocess.pl }}} Similarly, if your binary executable does not require a post-processing script, the following instruction can be used in the script: {{{ # Execution with preprocessing only: $SCRIPTDIR/preprocess.pl | $BIN -N=$MAXINT -filter=$OUTPUT_PREDICATES -n=1 -silent -- }}}