src/HOL/TPTP/lib/Tools/tptp_refute

 SCRATCH="Scratch_${PRG}_$$_${RANDOM}"
 
 TIMEOUT=$1
 shift
 
-isabelle build -b HOL-TPTP
+isabelle build -b HOL-TPTP 2>&1 | grep --line-buffered -v "elapsed time$"
 
 for FILE in "$@"
 do
   echo "theory $SCRATCH imports \"$TPTP_HOME/ATP_Problem_Import\" begin \
 ML {* ATP_Problem_Import.refute_tptp_file @{theory} ($TIMEOUT) \"$FILE\" *} end" \
     > /tmp/$SCRATCH.thy
-  isabelle process -e "use_thy \"/tmp/$SCRATCH\"; exit 1;" -l HOL-TPTP | grep --line-buffered -v "^###\|^PROOF FAILED for depth\|^Failure node\|inferences so far.  Searching to depth\|^val \|^Loading theory\|^Warning-The type of\|^   monotype.$"
+  isabelle process -e "use_thy \"/tmp/$SCRATCH\"; exit 1;" -l HOL-TPTP | grep --line-buffered -v "^###\|^PROOF FAILED for depth\|^Failure node\|inferences so far.  Searching to depth\|^val \|^Loading theory\|^poly.*warning: The type of\|^   monotype.$"
 done