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.r127-smll-177955743800002.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 DoubleLock-PT-p1s2, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r127-smll-177955743800002
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 3.7M
-rw-r--r-- 1 mcc users 4.9K Mar 6 18:10 CTLCardinality.txt
-rw-r--r-- 1 mcc users 46K Mar 6 18:10 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.3K Mar 6 18:10 CTLFireability.txt
-rw-r--r-- 1 mcc users 44K Mar 6 18:10 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.5K Mar 15 09:38 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Mar 15 09:38 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Mar 15 09:38 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 15 09:38 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.8K Mar 6 18:10 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 91K Mar 6 18:10 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.6K Mar 6 18:10 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 61K Mar 6 18:10 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 15 09:38 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 09:38 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 3.4M 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 DoubleLock-PT-p1s2-UpperBounds-00
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-01
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-02
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-03
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-04
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-05
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-06
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-07
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-08
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-09
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-10
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-11
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-12
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-13
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-14
FORMULA_NAME DoubleLock-PT-p1s2-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779558008665

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DoubleLock-PT-p1s2
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-23 17:40:10] [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]
[2026-05-23 17:40:10] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 17:40:11] [INFO ] Load time of PNML (sax parser for PT used): 845 ms
[2026-05-23 17:40:11] [INFO ] Transformed 570 places.
[2026-05-23 17:40:11] [INFO ] Transformed 7600 transitions.
[2026-05-23 17:40:11] [INFO ] Parsed PT model containing 570 places and 7600 transitions and 30784 arcs in 1065 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 14 ms.
Deduced a syphon composed of 132 places in 34 ms
Reduce places removed 132 places and 256 transitions.
FORMULA DoubleLock-PT-p1s2-UpperBounds-02 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DoubleLock-PT-p1s2-UpperBounds-05 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DoubleLock-PT-p1s2-UpperBounds-08 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DoubleLock-PT-p1s2-UpperBounds-09 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DoubleLock-PT-p1s2-UpperBounds-11 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DoubleLock-PT-p1s2-UpperBounds-15 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-23 17:40:11] [INFO ] Flow matrix only has 5003 transitions (discarded 2341 similar events)
// Phase 1: matrix 5003 rows 438 cols
[2026-05-23 17:40:12] [INFO ] Computed 4 invariants in 144 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
RANDOM walk for 10006 steps (90 resets) in 187 ms. (53 steps per ms)
FORMULA DoubleLock-PT-p1s2-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p1s2-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 30003 steps (43 resets) in 208 ms. (143 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 0] Max Struct:[1, 1]
[2026-05-23 17:40:12] [INFO ] Flow matrix only has 5003 transitions (discarded 2341 similar events)
[2026-05-23 17:40:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 17:40:12] [INFO ] [Real]Absence check using 3 positive place invariants in 17 ms returned sat
[2026-05-23 17:40:12] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 17:40:14] [INFO ] [Real]Absence check using state equation in 1635 ms returned sat
[2026-05-23 17:40:14] [INFO ] State equation strengthened by 400 read => feed constraints.
[2026-05-23 17:40:15] [INFO ] [Real]Added 400 Read/Feed constraints in 233 ms returned sat
[2026-05-23 17:40:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 17:40:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 12 ms returned sat
[2026-05-23 17:40:15] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 17:40:16] [INFO ] [Nat]Absence check using state equation in 1399 ms returned sat
[2026-05-23 17:40:17] [INFO ] SMT solver returned unknown. Retrying;
[2026-05-23 17:40:17] [INFO ] [Nat]Added 400 Read/Feed constraints in 1072 ms returned sat
[2026-05-23 17:40:19] [INFO ] Computed and/alt/rep : 644/5124/644 causal constraints (skipped 4357 transitions) in 1714 ms.
[2026-05-23 17:40:20] [INFO ] Added : 0 causal constraints over 0 iterations in 2215 ms. Result :unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 17:40:20] [INFO ] [Real]Absence check using 3 positive place invariants in 11 ms returned sat
[2026-05-23 17:40:20] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 17:40:22] [INFO ] [Real]Absence check using state equation in 1712 ms returned sat
[2026-05-23 17:40:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 17:40:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 11 ms returned sat
[2026-05-23 17:40:22] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-23 17:40:24] [INFO ] [Nat]Absence check using state equation in 1819 ms returned sat
[2026-05-23 17:40:24] [INFO ] SMT solver returned unknown. Retrying;
[2026-05-23 17:40:25] [INFO ] [Nat]Added 400 Read/Feed constraints in 1214 ms returned unknown
Current structural bounds on expressions (after SMT) : Max Seen:[0, 0] Max Struct:[1, 1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0, 0] Max Struct:[1, 1]
Support contains 2 out of 438 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 438/438 places, 7344/7344 transitions.
Graph (complete) has 12357 edges and 438 vertex of which 434 are kept as prefixes of interest. Removing 4 places using SCC suffix rule.25 ms
Discarding 4 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 128 transitions
Reduce isomorphic transitions removed 128 transitions.
Iterating post reduction 0 with 128 rules applied. Total rules applied 129 place count 434 transition count 7216
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 130 place count 433 transition count 7088
Iterating global reduction 1 with 1 rules applied. Total rules applied 131 place count 433 transition count 7088
Applied a total of 131 rules in 632 ms. Remains 433 /438 variables (removed 5) and now considering 7088/7344 (removed 256) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 647 ms. Remains : 433/438 places, 7088/7344 transitions.
[2026-05-23 17:40:26] [INFO ] Flow matrix only has 4747 transitions (discarded 2341 similar events)
// Phase 1: matrix 4747 rows 433 cols
[2026-05-23 17:40:26] [INFO ] Computed 3 invariants in 75 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0] Max Struct:[1, 1]
RANDOM walk for 1000001 steps (8650 resets) in 5099 ms. (196 steps per ms)
FORMULA DoubleLock-PT-p1s2-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 1000001 steps (1376 resets) in 1479 ms. (675 steps per ms)
FORMULA DoubleLock-PT-p1s2-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 5 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 )
[2026-05-23 17:40:34] [INFO ] Flatten gal took : 648 ms
[2026-05-23 17:40:34] [INFO ] Flatten gal took : 345 ms
[2026-05-23 17:40:34] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1718856853251256723.gal : 137 ms
[2026-05-23 17:40:34] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4343007898679929436.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/ReachabilityCardinality1718856853251256723.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4343007898679929436.prop' '--nowitness' '--gen-order' 'FOLLOW'

ITS runner timed out or was interrupted.
its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
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 24217 ms.

BK_STOP 1779558034882

--------------------
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="DoubleLock-PT-p1s2"
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 DoubleLock-PT-p1s2, 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 r127-smll-177955743800002"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DoubleLock-PT-p1s2.tgz
mv DoubleLock-PT-p1s2 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 ;