#! /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
ENCODING=$SCRIPTDIR/my_encoding.dl

# Execution with preprocessing and postprocessing:
$SCRIPTDIR/preprocess.pl | $BIN -N=$MAXINT -filter=$OUTPUT_PREDICATES -n=1 -silent $ENCODING -- | $SCRIPTDIR/postprocess.pl

ECODE=$?
if [ $ECODE -ne 0 ]; then
    echo UNKNOWN;
fi
exit $ECODE

Note that, in the above script, DLV is invoked after a pre-processing perl script. The output of DLV is 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 $ENCODING -- | $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 $ENCODING --