fond
Model Checking Contest 2026
16th edition, Hamburg, Germany, June 23, 2026
Execution of r063-smll-177946904200048
Last Updated
Jun 17, 2026

About the Execution of 2025-gold for ClientsAndServers-PT-N0050P0

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
349.271 7125.00 12868.00 155.80 100 100 400 100 100 100 400 200 100 100 100 100 400 400 100 100 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.r063-smll-177946904200048.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 gold2025
Input is ClientsAndServers-PT-N0050P0, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r063-smll-177946904200048
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 404K
-rw-r--r-- 1 mcc users 7.3K Mar 6 10:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Mar 6 10:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K Mar 6 10:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 49K Mar 6 10:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.7K Mar 15 08:11 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Mar 15 08:11 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 15 08:11 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 15 08:11 LTLFireability.xml
-rw-r--r-- 1 mcc users 6.6K Mar 6 10:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 59K Mar 6 10:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K Mar 6 10:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 79K Mar 6 10:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 15 08:11 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 08:11 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 8 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 9.2K 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 positive values
NUM_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-00
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-01
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-02
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-03
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-04
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-05
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-06
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-07
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-08
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-09
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-10
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-11
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-12
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-13
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-14
FORMULA_NAME ClientsAndServers-PT-N0050P0-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779479989225

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ClientsAndServers-PT-N0050P0
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-22 19:59:51] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-22 19:59:51] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-22 19:59:52] [INFO ] Load time of PNML (sax parser for PT used): 68 ms
[2026-05-22 19:59:52] [INFO ] Transformed 25 places.
[2026-05-22 19:59:52] [INFO ] Transformed 18 transitions.
[2026-05-22 19:59:52] [INFO ] Parsed PT model containing 25 places and 18 transitions and 54 arcs in 267 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 17 ms.
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 400, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 400, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
// Phase 1: matrix 18 rows 25 cols
[2026-05-22 19:59:52] [INFO ] Computed 8 invariants in 13 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 400, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100] Max Struct:[100, 100, 400, 100, 100, 100, 400, 200, 100, 100, 100, 100, 400, 400, 100, 100]
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-15 100 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-02 400 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 10091 steps (3 resets) in 20 ms. (480 steps per ms)
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-14 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-11 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-10 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-09 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-08 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-07 200 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-06 400 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-05 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-04 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-03 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-01 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-00 100 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 20002 steps (4 resets) in 46 ms. (425 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[100, 200] Max Struct:[400, 400]
[2026-05-22 19:59:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-22 19:59:52] [INFO ] [Real]Absence check using 5 positive place invariants in 10 ms returned sat
[2026-05-22 19:59:52] [INFO ] [Real]Absence check using 5 positive and 3 generalized place invariants in 4 ms returned sat
[2026-05-22 19:59:52] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-22 19:59:52] [INFO ] Computed and/alt/rep : 17/21/17 causal constraints (skipped 0 transitions) in 14 ms.
[2026-05-22 19:59:52] [INFO ] Added : 16 causal constraints over 4 iterations in 89 ms. Result :sat
Minimization took 22 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-22 19:59:52] [INFO ] [Real]Absence check using 5 positive place invariants in 4 ms returned sat
[2026-05-22 19:59:52] [INFO ] [Real]Absence check using 5 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-22 19:59:52] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-22 19:59:52] [INFO ] Computed and/alt/rep : 17/21/17 causal constraints (skipped 0 transitions) in 6 ms.
[2026-05-22 19:59:53] [INFO ] Added : 16 causal constraints over 4 iterations in 45 ms. Result :sat
Minimization took 15 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[100, 200] Max Struct:[400, 400]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[400, 400] Max Struct:[400, 400]
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 18/18 transitions.
Discarding 3 places :
Implicit places reduction removed 3 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 5 transitions
Trivial Post-agglo rules discarded 5 transitions
Performed 5 trivial Post agglomeration. Transition count delta: 5
Iterating post reduction 0 with 8 rules applied. Total rules applied 8 place count 22 transition count 13
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 1 with 5 rules applied. Total rules applied 13 place count 17 transition count 13
Performed 3 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 3 Pre rules applied. Total rules applied 13 place count 17 transition count 10
Deduced a syphon composed of 3 places in 0 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 2 with 6 rules applied. Total rules applied 19 place count 14 transition count 10
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 23 place count 12 transition count 8
Free-agglomeration rule (complex) applied 3 times.
Iterating global reduction 2 with 3 rules applied. Total rules applied 26 place count 12 transition count 5
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 30 place count 8 transition count 5
Applied a total of 30 rules in 48 ms. Remains 8 /25 variables (removed 17) and now considering 5/18 (removed 13) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 62 ms. Remains : 8/25 places, 5/18 transitions.
// Phase 1: matrix 5 rows 8 cols
[2026-05-22 19:59:55] [INFO ] Computed 4 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[400, 400] Max Struct:[400, 400]
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-13 400 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ClientsAndServers-PT-N0050P0-UpperBounds-12 400 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000019 steps (2 resets) in 350 ms. (2849 steps per ms)
BEST_FIRST walk for 0 steps (0 resets) in 0 ms. (0 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2026-05-22 19:59:56] [INFO ] Flatten gal took : 36 ms
[2026-05-22 19:59:56] [INFO ] Flatten gal took : 5 ms
[2026-05-22 19:59:56] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6627675633141624365.gal : 8 ms
[2026-05-22 19:59:56] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3979950936185592730.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality6627675633141624365.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3979950936185592730.prop' '--nowitness' '--gen-order' 'FOLLOW'

ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 4495 ms.

BK_STOP 1779479996350

--------------------
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
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -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_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -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="ClientsAndServers-PT-N0050P0"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2025"
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 gold2025"
echo " Input is ClientsAndServers-PT-N0050P0, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r063-smll-177946904200048"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ClientsAndServers-PT-N0050P0.tgz
mv ClientsAndServers-PT-N0050P0 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;