fond
Model Checking Contest 2026
16th edition, Hamburg, Germany, June 23, 2026
Execution of r114-smll-177955740400087
Last Updated
Jun 17, 2026

About the Execution of ITS-Tools for DrinkVendingMachine-COL-16

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
227.792 5196.00 11068.00 108.20 TFFTFTTTTFTTFTFF 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.r114-smll-177955740400087.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 DrinkVendingMachine-COL-16, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r114-smll-177955740400087
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 456K
-rw-r--r-- 1 mcc users 6.4K Mar 7 09:48 CTLCardinality.txt
-rw-r--r-- 1 mcc users 57K Mar 7 09:48 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.6K Mar 7 09:48 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K Mar 7 09:48 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.1K Mar 15 09:41 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Mar 15 09:41 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Mar 15 09:41 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 09:41 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.2K Mar 7 09:48 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 68K Mar 7 09:48 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13K Mar 7 09:48 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 101K Mar 7 09:48 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 15 09:41 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Mar 15 09:41 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_pt
-rw-r--r-- 1 mcc users 3 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 25K 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

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-00
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-01
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-02
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-03
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-04
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-05
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-06
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-07
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-08
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-09
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-10
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-11
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-12
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-13
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-14
FORMULA_NAME DrinkVendingMachine-COL-16-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779642014947

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DrinkVendingMachine-COL-16
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is COL
ReachabilityFireability COL
Running Version 202604301425
[2026-05-24 17:00:17] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-24 17:00:17] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-24 17:00:17] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2026-05-24 17:00:18] [WARNING] Using fallBack plugin, rng conformance not checked
[2026-05-24 17:00:18] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 1257 ms
[2026-05-24 17:00:18] [INFO ] Imported 6 HL places and 7 HL transitions for a total of 192 PT places and 4473952.0 transition bindings in 38 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 59 ms.
Reduction of identical properties reduced properties to check from 16 to 15
Working with output stream class java.io.PrintStream
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2026-05-24 17:00:18] [INFO ] Built PT skeleton of HLPN with 6 places and 7 transitions 28 arcs in 9 ms.
[2026-05-24 17:00:18] [INFO ] Skeletonized 13 HLPN properties in 1 ms.
All 13 properties of the HLPN use transition enablings in a way that makes the skeleton too coarse.
Symmetric sort wr.t. initial and guards and successors and join/free detected :Quality
Symmetric sort wr.t. initial detected :Quality
Transition elaborate3 : guard parameter $x(Quality:64) in guard (AND (GT $x 47) (LEQ $x 63))introduces in Quality(64) partition with 2 elements
Transition elaborate2 : guard parameter $x(Quality:64) in guard (AND (GT $x 31) (LEQ $x 47))introduces in Quality(64) partition with 2 elements
Transition elaborate1 : guard parameter $x(Quality:64) in guard (AND (GT $x 15) (LEQ $x 31))introduces in Quality(64) partition with 2 elements
Transition elaborate0 : guard parameter $x(Quality:64) in guard (LEQ $x 15)introduces in Quality(64) partition with 2 elements
Sort wr.t. initial and guards Quality has partition 4
Applying symmetric unfolding of partitioned symmetric sort :Quality domain size was 64 reducing to 4 values.
For transition elaborate3:(AND (GT $x 47) (LEQ $x 63)) -> (EQ $x 3)
For transition elaborate2:(AND (GT $x 31) (LEQ $x 47)) -> (EQ $x 2)
For transition elaborate1:(AND (GT $x 15) (LEQ $x 31)) -> (EQ $x 1)
For transition elaborate0:(LEQ $x 15) -> (EQ $x 0)
Symmetric sort wr.t. initial and guards and successors and join/free detected :Options
Symmetric sort wr.t. initial detected :Options
Symmetric sort wr.t. initial and guards detected :Options
Applying symmetric unfolding of full symmetric sort :Options domain size was 16
Symmetric sort wr.t. initial and guards and successors and join/free detected :Products
Symmetric sort wr.t. initial detected :Products
Symmetric sort wr.t. initial and guards detected :Products
Applying symmetric unfolding of full symmetric sort :Products domain size was 16
[2026-05-24 17:00:18] [INFO ] Unfolded HLPN to a Petri net with 12 places and 10 transitions 34 arcs in 58 ms.
[2026-05-24 17:00:18] [INFO ] Unfolded 13 HLPN properties in 0 ms.
Initial state reduction rules removed 6 formulas.
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-11 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2026-05-24 17:00:19] [INFO ] Flatten gal took : 85 ms
[2026-05-24 17:00:19] [INFO ] Flatten gal took : 20 ms
RANDOM walk for 40017 steps (8 resets) in 711 ms. (56 steps per ms) remains 1/7 properties
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-15 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-12 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2026-05-24 17:00:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6754915636238267206.gal : 18 ms
[2026-05-24 17:00:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11708220333420278946.prop : 13 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/ReachabilityCardinality6754915636238267206.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11708220333420278946.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/ReachabilityCardinality11708220333420278946.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :3 after 11
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :11 after 27
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :27 after 90
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :90 after 259
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :259 after 76483
BEST_FIRST walk for 40004 steps (8 resets) in 1568 ms. (25 steps per ms) remains 1/1 properties
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-3516665365449533562.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-2697409233422281009.kers'
[2026-05-24 17:00:19] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-3516665365449533562.kers, --Pflows, --basisKERS=/tmp/petrispot-output-2697409233422281009.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 10 rows 6 cols 17 entries
Finished phase 1 with 6 SingleSign rule and 0 generalized
[2026-05-24 17:00:19] [INFO ] Computed 6 invariants in 0 ms
Computed 6 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-2697409233422281009.kers
Total runtime 2 ms.
Problem DrinkVendingMachine-COL-16-ReachabilityFireability-2024-10 is UNSAT
FORMULA DrinkVendingMachine-COL-16-ReachabilityFireability-2024-10 TRUE TECHNIQUES SMT_REFINEMENT
After SMT solving in domain Real declared 12/22 variables, and 0 constraints, problems are : Problem set: 1 solved, 0 unsolved in 183 ms.
Refiners :[Positive P Invariants (semi-flows): 0/6 constraints, State Equation: 0/12 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 367ms problems are : Problem set: 1 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.
All properties solved without resorting to model-checking.
Total runtime 2948 ms.

BK_STOP 1779642020143

--------------------
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
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ 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 ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="DrinkVendingMachine-COL-16"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
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 DrinkVendingMachine-COL-16, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r114-smll-177955740400087"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DrinkVendingMachine-COL-16.tgz
mv DrinkVendingMachine-COL-16 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;