fond
Model Checking Contest 2026
16th edition, Hamburg, Germany, June 23, 2026
Execution of r136-smll-177955811000228
Last Updated
Jun 17, 2026

About the Execution of ITS-Tools for FlexibleBarrier-PT-10b

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
669.023 18455.00 52152.00 170.80 F 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.r136-smll-177955811000228.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)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is FlexibleBarrier-PT-10b, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r136-smll-177955811000228
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 804K
-rw-r--r-- 1 mcc users 7.6K Mar 7 06:45 CTLCardinality.txt
-rw-r--r-- 1 mcc users 84K Mar 7 06:45 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K Mar 7 06:45 CTLFireability.txt
-rw-r--r-- 1 mcc users 57K Mar 7 06:45 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.5K Mar 15 10:12 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Mar 15 10:12 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:12 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 10:12 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.3K Mar 7 06:45 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 91K Mar 7 06:45 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.4K Mar 7 06:45 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 71K Mar 7 06:45 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:12 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 10:12 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 374K Mar 3 18:30 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 StableMarking

=== Now, execution of the tool begins

BK_START 1779617861316

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=FlexibleBarrier-PT-10b
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
StableMarking PT
Running Version 202604301425
[2026-05-24 10:17:43] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-24 10:17:43] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-24 10:17:44] [INFO ] Load time of PNML (sax parser for PT used): 337 ms
[2026-05-24 10:17:44] [INFO ] Transformed 1402 places.
[2026-05-24 10:17:44] [INFO ] Transformed 1613 transitions.
[2026-05-24 10:17:44] [INFO ] Found NUPN structural information;
[2026-05-24 10:17:44] [INFO ] Parsed PT model containing 1402 places and 1613 transitions and 4025 arcs in 588 ms.
Graph (trivial) has 1370 edges and 1402 vertex of which 62 / 1402 are part of one of the 10 SCC in 25 ms
Free SCC test removed 52 places
Structural test allowed to assert that 384 places are NOT stable. Took 92 ms.
Ensure Unique test removed 53 transitions
Reduce redundant transitions removed 53 transitions.
[2026-05-24 10:17:46] [INFO ] Flatten gal took : 555 ms
[2026-05-24 10:17:46] [INFO ] Flatten gal took : 112 ms
[2026-05-24 10:17:46] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13692777574059951337.gal : 116 ms
[2026-05-24 10:17:46] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12484706288736627703.prop : 11 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/ReachabilityCardinality13692777574059951337.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12484706288736627703.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 ...330
RANDOM walk for 40000 steps (709 resets) in 5634 ms. (7 steps per ms) remains 852/1018 properties
BEST_FIRST walk for 121 steps (8 resets) in 14 ms. (8 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 13 ms. (8 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 12 ms. (9 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 16 ms. (7 steps per ms) remains 852/852 properties
Loading property file /tmp/ReachabilityCardinality12484706288736627703.prop.
BEST_FIRST walk for 123 steps (8 resets) in 15 ms. (7 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 13 ms. (8 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 10 ms. (11 steps per ms) remains 852/852 properties
BEST_FIRST walk for 120 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 11 ms. (10 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 12 ms. (9 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 12 ms. (9 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 11 ms. (10 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 10 ms. (11 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 13 ms. (8 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 124 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 120 steps (8 resets) in 13 ms. (8 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 120 steps (8 resets) in 7 ms. (15 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 7 ms. (15 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 10 ms. (11 steps per ms) remains 852/852 properties
BEST_FIRST walk for 120 steps (8 resets) in 7 ms. (15 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 6 ms. (17 steps per ms) remains 852/852 properties
BEST_FIRST walk for 124 steps (8 resets) in 6 ms. (17 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 6 ms. (17 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 124 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 7 ms. (15 steps per ms) remains 852/852 properties
BEST_FIRST walk for 122 steps (8 resets) in 6 ms. (17 steps per ms) remains 852/852 properties
BEST_FIRST walk for 121 steps (8 resets) in 9 ms. (12 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 7 ms. (15 steps per ms) remains 852/852 properties
BEST_FIRST walk for 124 steps (8 resets) in 6 ms. (17 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 7 ms. (15 steps per ms) remains 852/852 properties
BEST_FIRST walk for 123 steps (8 resets) in 8 ms. (13 steps per ms) remains 852/852 properties
[2026-05-24 10:17:46] [INFO ] Flow matrix only has 1551 transitions (discarded 9 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-3468309527954414983.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-17103439943525213733.kers'
[2026-05-24 10:17:46] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-3468309527954414983.kers, --Pflows, --basisKERS=/tmp/petrispot-output-17103439943525213733.kers]
Normalized transition count is 1550 out of 1551 initially.
Culled 0 columns in 1 ms.
// Phase 1: matrix 1550 rows 1350 cols 3899 entries
Finished phase 1 with 1338 SingleSign rule and 0 generalized
[2026-05-24 10:17:46] [INFO ] Computed 12 invariants in 9 ms
Computed 12 P flows in 10 ms.
Exported basis to /tmp/petrispot-output-17103439943525213733.kers
Total runtime 12 ms.
[2026-05-24 10:17:46] [INFO ] State equation strengthened by 1 read => feed constraints.
SDD proceeding with computation,1018 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1018 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1018 properties remain. new max is 16
SDD size :10 after 29
SDD proceeding with computation,1018 properties remain. new max is 32
SDD size :29 after 33
Error getting values : (error "Timeout of Z3 solver reached")
At refinement iteration 0 (INCLUDED_ONLY) 0/852 variables, 852/852 constraints. Problems are: Problem set: 0 solved, 852 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 852/2901 variables, and 852 constraints, problems are : Problem set: 0 solved, 852 unsolved in 5162 ms.
Refiners :[Domain max(s): 852/1350 constraints, Positive P Invariants (semi-flows): 0/12 constraints, State Equation: 0/1350 constraints, ReadFeed: 0/1 constraints, PredecessorRefiner: 852/852 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 852 unsolved
SDD proceeding with computation,1018 properties remain. new max is 64
SDD size :33 after 539
SDD proceeding with computation,1018 properties remain. new max is 128
SDD size :539 after 24390
At refinement iteration 0 (INCLUDED_ONLY) 0/852 variables, 852/852 constraints. Problems are: Problem set: 0 solved, 852 unsolved
SDD proceeding with computation,1018 properties remain. new max is 256
SDD size :24390 after 1.93472e+07
SDD proceeding with computation,1018 properties remain. new max is 512
SDD size :1.93472e+07 after 4.33131e+13
Error getting values : (error "Timeout of Z3 solver reached")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 852/2901 variables, and 852 constraints, problems are : Problem set: 0 solved, 852 unsolved in 5026 ms.
Refiners :[Domain max(s): 852/1350 constraints, Positive P Invariants (semi-flows): 0/12 constraints, State Equation: 0/1350 constraints, ReadFeed: 0/1 constraints, PredecessorRefiner: 0/852 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10690ms problems are : Problem set: 0 solved, 852 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 852 out of 1350 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 1350/1350 places, 1560/1560 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 104 transitions
Trivial Post-agglo rules discarded 104 transitions
Performed 104 trivial Post agglomeration. Transition count delta: 104
Iterating post reduction 0 with 114 rules applied. Total rules applied 114 place count 1350 transition count 1446
Reduce places removed 104 places and 0 transitions.
Iterating post reduction 1 with 104 rules applied. Total rules applied 218 place count 1246 transition count 1446
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 218 place count 1246 transition count 1445
Deduced a syphon composed of 1 places in 9 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 220 place count 1245 transition count 1445
Discarding 36 places :
Symmetric choice reduction at 2 with 36 rule applications. Total rules 256 place count 1209 transition count 1409
Iterating global reduction 2 with 36 rules applied. Total rules applied 292 place count 1209 transition count 1409
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 297 place count 1204 transition count 1404
Iterating global reduction 2 with 5 rules applied. Total rules applied 302 place count 1204 transition count 1404
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 303 place count 1204 transition count 1403
Performed 47 Post agglomeration using F-continuation condition.Transition count delta: 47
Deduced a syphon composed of 47 places in 3 ms
Reduce places removed 47 places and 0 transitions.
Iterating global reduction 3 with 94 rules applied. Total rules applied 397 place count 1157 transition count 1356
Drop transitions (Empty/Sink Transition effects.) removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 3 with 11 rules applied. Total rules applied 408 place count 1157 transition count 1345
Free-agglomeration rule applied 262 times.
Iterating global reduction 4 with 262 rules applied. Total rules applied 670 place count 1157 transition count 1083
Reduce places removed 262 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 4 with 268 rules applied. Total rules applied 938 place count 895 transition count 1077
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 5 with 1 rules applied. Total rules applied 939 place count 894 transition count 1076
Applied a total of 939 rules in 662 ms. Remains 894 /1350 variables (removed 456) and now considering 1076/1560 (removed 484) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 672 ms. Remains : 894/1350 places, 1076/1560 transitions.
RANDOM walk for 200826 steps (0 resets) in 5201 ms. (38 steps per ms) remains 0/852 properties
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Able to resolve query StableMarking after proving 1020 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK MARKED_SUFFIX_TEST TRIVIAL_UNMARKED_SCC_TEST TOPOLOGICAL
Total runtime 15850 ms.

BK_STOP 1779617879771

--------------------
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
+ [[ StableMarking = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StableMarking -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 StableMarking -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="FlexibleBarrier-PT-10b"
export BK_EXAMINATION="StableMarking"
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 FlexibleBarrier-PT-10b, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r136-smll-177955811000228"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FlexibleBarrier-PT-10b.tgz
mv FlexibleBarrier-PT-10b execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.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 '' StableMarking.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;