src/HOL/TPTP/lib/Tools/tptp_sledgehammer

actually fail on prolog errors -- such as swipl startup failure due to missing shared libraries -- assuming it normally produces clean return code 0;

#!/usr/bin/env bash
#
# Author: Jasmin Blanchette
#
# DESCRIPTION: Sledgehammer for TPTP


PRG="$(basename "$0")"

function usage() {
  echo
  echo "Usage: isabelle $PRG TIMEOUT FILES"
  echo
  echo "  Runs Sledgehammer on TPTP problems."
  echo "  Each problem is allocated at most TIMEOUT seconds."
  echo
  exit 1
}

[ "$#" -eq 0 -o "$1" = "-?" ] && usage

SCRATCH="Scratch_${PRG}_$$_${RANDOM}"

TIMEOUT=$1
shift

for FILE in "$@"
do
  echo "theory $SCRATCH imports \"$TPTP_HOME/ATP_Problem_Import\" begin \
ML {* ATP_Problem_Import.sledgehammer_tptp_file @{theory} ($TIMEOUT) \"$FILE\" *} end;" \
    > /tmp/$SCRATCH.thy
  "$ISABELLE_PROCESS" -e "use_thy \"/tmp/$SCRATCH\"; exit 1;"
done