About the Execution of ITS-Tools for SupplyChain-PT-00020
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 481.184 | 7143.00 | 19649.00 | 60.00 | T | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).

Trace from the execution
Formatting '/data/fkordon/mcc2026-input.r360-tall-178024403900120.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
..............
=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is SupplyChain-PT-00020, examination is OneSafe
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r360-tall-178024403900120
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 540K
-rw-r--r-- 1 mcc users 6.6K May 27 07:36 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K May 27 07:36 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K May 27 07:36 CTLFireability.txt
-rw-r--r-- 1 mcc users 47K May 27 07:36 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K May 27 10:57 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K May 27 10:57 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 27 10:57 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 27 10:57 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 26 18:17 NewModel
-rw-r--r-- 1 mcc users 11K May 27 07:36 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 109K May 27 07:36 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K May 27 07:36 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 102K May 27 07:36 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K May 27 10:57 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 27 10:57 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 26 18:17 equiv_col
-rw-r--r-- 1 mcc users 6 May 26 18:17 instance
-rw-r--r-- 1 mcc users 6 May 26 18:17 iscolored
-rw-r--r-- 1 mcc users 81K May 26 18:17 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of booleans
BOOL_VECTOR
FORMULA_NAME OneSafe
=== Now, execution of the tool begins
BK_START 1780293511677
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=OneSafe
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=SupplyChain-PT-00020
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
OneSafe PT
Running Version 202604301425
[2026-06-01 05:58:32] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, OneSafe, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-06-01 05:58:32] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-01 05:58:32] [INFO ] Load time of PNML (sax parser for PT used): 76 ms
[2026-06-01 05:58:32] [INFO ] Transformed 264 places.
[2026-06-01 05:58:32] [INFO ] Transformed 163 transitions.
[2026-06-01 05:58:33] [INFO ] Parsed PT model containing 264 places and 163 transitions and 726 arcs in 162 ms.
Structural unfed/single firing approximation deduced that 102/264 places are one safe.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-2474053534798322774.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-1589199883079877832.kers'
[2026-06-01 05:58:33] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-2474053534798322774.kers, --Pflows, --basisKERS=/tmp/petrispot-output-1589199883079877832.kers]
Normalized transition count is 162 out of 163 initially.
Culling duplicate invariants (modulo rational): removing 80 columns.
Culled 80 columns in 0 ms.
// Phase 1: matrix 162 rows 184 cols 524 entries
Finished phase 1 with 102 SingleSign rule and 20 generalized
[2026-06-01 05:58:33] [INFO ] Computed 142 invariants in 1 ms
Computed 142 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-1589199883079877832.kers
Total runtime 2 ms.
[2026-06-01 05:58:33] [INFO ] Rough structural analysis with invariants proved 62 places are one safe in 47 ms (including invariant computation).
[2026-06-01 05:58:33] [INFO ] [Real]Absence check using 42 positive place invariants in 167 ms proved 0 places are One-Safe.
[2026-06-01 05:58:33] [INFO ] [Real]Absence check using 42 positive and 100 generalized place invariants in 99 ms proved 0 places are One-Safe.
[2026-06-01 05:58:33] [INFO ] [Real] State equation constraints in 153 ms proved 201 places are One-Safe.
[2026-06-01 05:58:34] [INFO ] Flatten gal took : 112 ms
[2026-06-01 05:58:34] [INFO ] Flatten gal took : 60 ms
[2026-06-01 05:58:34] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11170313420812805607.gal : 26 ms
[2026-06-01 05:58:34] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7825879175569163300.prop : 10 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality11170313420812805607.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7825879175569163300.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality7825879175569163300.prop.
SDD proceeding with computation,100 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,100 properties remain. new max is 8
SDD size :3 after 18
SDD proceeding with computation,100 properties remain. new max is 16
SDD size :18 after 243
SDD proceeding with computation,100 properties remain. new max is 32
SDD size :243 after 59049
RANDOM walk for 40000 steps (387 resets) in 2346 ms. (17 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 10 ms. (36 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 12 ms. (31 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 4 ms. (80 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 4 ms. (80 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 10 ms. (36 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 4 ms. (80 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 100/100 properties
BEST_FIRST walk for 404 steps (8 resets) in 4 ms. (80 steps per ms) remains 100/100 properties
Probabilistic random walk after 100001 steps, saw 18602 distinct states, run finished after 714 ms. (steps per millisecond=140 ) properties seen :0
[2026-06-01 05:58:35] [INFO ] Invariant cache hit.
[2026-06-01 05:58:35] [INFO ] State equation strengthened by 1 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 40/40 constraints. Problems are: Problem set: 0 solved, 100 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 100 unsolved
At refinement iteration 2 (OVERLAPS) 102/202 variables, 40/80 constraints. Problems are: Problem set: 0 solved, 100 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/202 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 100 unsolved
At refinement iteration 4 (OVERLAPS) 2/204 variables, 2/82 constraints. Problems are: Problem set: 0 solved, 100 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 100 unsolved
At refinement iteration 6 (OVERLAPS) 60/264 variables, 60/142 constraints. Problems are: Problem set: 0 solved, 100 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/264 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 100 unsolved
Problem osplace_0 is UNSAT
Problem osplace_1 is UNSAT
Problem osplace_2 is UNSAT
Problem osplace_3 is UNSAT
Problem osplace_4 is UNSAT
Problem osplace_5 is UNSAT
Problem osplace_6 is UNSAT
Problem osplace_7 is UNSAT
Problem osplace_8 is UNSAT
Problem osplace_9 is UNSAT
Problem osplace_10 is UNSAT
Problem osplace_11 is UNSAT
Problem osplace_12 is UNSAT
Problem osplace_13 is UNSAT
Problem osplace_14 is UNSAT
Problem osplace_15 is UNSAT
Problem osplace_16 is UNSAT
Problem osplace_17 is UNSAT
Problem osplace_18 is UNSAT
Problem osplace_19 is UNSAT
Problem osplace_20 is UNSAT
Problem osplace_21 is UNSAT
Problem osplace_22 is UNSAT
Problem osplace_23 is UNSAT
Problem osplace_24 is UNSAT
Problem osplace_25 is UNSAT
Problem osplace_34 is UNSAT
Problem osplace_45 is UNSAT
Problem osplace_49 is UNSAT
Problem osplace_50 is UNSAT
Problem osplace_51 is UNSAT
Problem osplace_52 is UNSAT
Problem osplace_53 is UNSAT
Problem osplace_54 is UNSAT
Problem osplace_55 is UNSAT
Problem osplace_56 is UNSAT
Problem osplace_57 is UNSAT
Problem osplace_58 is UNSAT
Problem osplace_59 is UNSAT
Problem osplace_60 is UNSAT
Problem osplace_61 is UNSAT
Problem osplace_62 is UNSAT
Problem osplace_63 is UNSAT
Problem osplace_64 is UNSAT
Problem osplace_65 is UNSAT
Problem osplace_66 is UNSAT
Problem osplace_67 is UNSAT
Problem osplace_68 is UNSAT
Problem osplace_69 is UNSAT
Problem osplace_70 is UNSAT
Problem osplace_78 is UNSAT
Problem osplace_89 is UNSAT
Problem osplace_100 is UNSAT
Problem osplace_111 is UNSAT
Problem osplace_112 is UNSAT
Problem osplace_162 is UNSAT
Problem osplace_163 is UNSAT
Problem osplace_164 is UNSAT
Problem osplace_165 is UNSAT
Problem osplace_166 is UNSAT
Problem osplace_168 is UNSAT
Problem osplace_169 is UNSAT
Problem osplace_170 is UNSAT
Problem osplace_171 is UNSAT
Problem osplace_172 is UNSAT
Problem osplace_173 is UNSAT
Problem osplace_174 is UNSAT
Problem osplace_175 is UNSAT
Problem osplace_176 is UNSAT
Problem osplace_177 is UNSAT
Problem osplace_179 is UNSAT
Problem osplace_180 is UNSAT
Problem osplace_181 is UNSAT
Problem osplace_182 is UNSAT
Problem osplace_183 is UNSAT
Problem osplace_187 is UNSAT
Problem osplace_198 is UNSAT
Problem osplace_209 is UNSAT
Problem osplace_220 is UNSAT
Problem osplace_231 is UNSAT
Problem osplace_242 is UNSAT
Problem osplace_245 is UNSAT
Problem osplace_246 is UNSAT
Problem osplace_247 is UNSAT
Problem osplace_248 is UNSAT
Problem osplace_249 is UNSAT
Problem osplace_250 is UNSAT
Problem osplace_251 is UNSAT
Problem osplace_252 is UNSAT
Problem osplace_253 is UNSAT
Problem osplace_254 is UNSAT
Problem osplace_255 is UNSAT
Problem osplace_256 is UNSAT
Problem osplace_257 is UNSAT
Problem osplace_258 is UNSAT
Problem osplace_259 is UNSAT
Problem osplace_260 is UNSAT
Problem osplace_261 is UNSAT
Problem osplace_262 is UNSAT
Problem osplace_263 is UNSAT
After SMT solving in domain Real declared 426/427 variables, and 406 constraints, problems are : Problem set: 100 solved, 0 unsolved in 3490 ms.
Refiners :[Positive P Invariants (semi-flows): 42/42 constraints, Generalized P Invariants (flows): 100/100 constraints, State Equation: 264/264 constraints, ReadFeed: 0/1 constraints, PredecessorRefiner: 100/100 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 3526ms problems are : Problem set: 100 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Able to resolve query OneSafe after proving 363 properties.
FORMULA OneSafe TRUE TECHNIQUES INVARIANTS SMT_REFINEMENT SAT_SMT STRUCTURAL
Total runtime 5958 ms.
BK_STOP 1780293518820
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ OneSafe = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution OneSafe -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination OneSafe -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="SupplyChain-PT-00020"
export BK_EXAMINATION="OneSafe"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool itstools"
echo " Input is SupplyChain-PT-00020, examination is OneSafe"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r360-tall-178024403900120"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/SupplyChain-PT-00020.tgz
mv SupplyChain-PT-00020 execution
cd execution
if [ "OneSafe" = "ReachabilityDeadlock" ] || [ "OneSafe" = "UpperBounds" ] || [ "OneSafe" = "QuasiLiveness" ] || [ "OneSafe" = "StableMarking" ] || [ "OneSafe" = "Liveness" ] || [ "OneSafe" = "OneSafe" ] || [ "OneSafe" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "OneSafe" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "OneSafe" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "OneSafe.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "OneSafe" = "ReachabilityDeadlock" ] || [ "OneSafe" = "QuasiLiveness" ] || [ "OneSafe" = "StableMarking" ] || [ "OneSafe" = "Liveness" ] || [ "OneSafe" = "OneSafe" ] ; then
echo "FORMULA_NAME OneSafe"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;
