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.r024-smll-177946789500017.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 AutonomousCar-PT-02b, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r024-smll-177946789500017
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 508K
-rw-r--r-- 1 mcc users 7.3K Mar 5 16:48 CTLCardinality.txt
-rw-r--r-- 1 mcc users 80K Mar 5 16:48 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.3K Mar 5 16:48 CTLFireability.txt
-rw-r--r-- 1 mcc users 60K Mar 5 16:48 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.8K Mar 15 07:18 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 07:18 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 15 07:18 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 07:18 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Mar 5 16:48 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 118K Mar 5 16:48 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K Mar 5 16:48 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 78K Mar 5 16:48 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 07:18 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 07:18 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 49K 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 QuasiLiveness

=== Now, execution of the tool begins

BK_START 1779472345294

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=AutonomousCar-PT-02b
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202604301425
[2026-05-22 17:52:27] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-22 17:52:27] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-22 17:52:28] [INFO ] Load time of PNML (sax parser for PT used): 148 ms
[2026-05-22 17:52:28] [INFO ] Transformed 155 places.
[2026-05-22 17:52:28] [INFO ] Transformed 194 transitions.
[2026-05-22 17:52:28] [INFO ] Found NUPN structural information;
[2026-05-22 17:52:28] [INFO ] Parsed PT model containing 155 places and 194 transitions and 620 arcs in 371 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 155/155 places, 194/194 transitions.
Graph (trivial) has 147 edges and 155 vertex of which 4 / 155 are part of one of the 2 SCC in 15 ms
Free SCC test removed 2 places
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 75 transitions
Trivial Post-agglo rules discarded 75 transitions
Performed 75 trivial Post agglomeration. Transition count delta: 75
Iterating post reduction 0 with 75 rules applied. Total rules applied 76 place count 153 transition count 117
Reduce places removed 75 places and 0 transitions.
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 9 transitions
Trivial Post-agglo rules discarded 9 transitions
Performed 9 trivial Post agglomeration. Transition count delta: 9
Iterating post reduction 1 with 92 rules applied. Total rules applied 168 place count 78 transition count 100
Reduce places removed 9 places and 0 transitions.
Iterating post reduction 2 with 9 rules applied. Total rules applied 177 place count 69 transition count 100
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 5 Pre rules applied. Total rules applied 177 place count 69 transition count 95
Deduced a syphon composed of 5 places in 2 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 3 with 10 rules applied. Total rules applied 187 place count 64 transition count 95
Performed 32 Post agglomeration using F-continuation condition with reduction of 17 identical transitions.
Deduced a syphon composed of 32 places in 1 ms
Reduce places removed 32 places and 0 transitions.
Iterating global reduction 3 with 64 rules applied. Total rules applied 251 place count 32 transition count 46
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: -13
Deduced a syphon composed of 3 places in 1 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 3 with 6 rules applied. Total rules applied 257 place count 29 transition count 59
Applied a total of 257 rules in 123 ms. Remains 29 /155 variables (removed 126) and now considering 59/194 (removed 135) transitions.
[2026-05-22 17:52:28] [INFO ] Flow matrix only has 58 transitions (discarded 1 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-6559703834390613337.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-8613540577384595064.kers'
[2026-05-22 17:52:28] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-6559703834390613337.kers, --Pflows, --basisKERS=/tmp/petrispot-output-8613540577384595064.kers]
Normalized transition count is 57 out of 58 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 57 rows 28 cols 289 entries
Finished phase 1 with 22 SingleSign rule and 0 generalized
[2026-05-22 17:52:28] [INFO ] Computed 7 invariants in 0 ms
Computed 7 P flows in 3 ms.
Exported basis to /tmp/petrispot-output-8613540577384595064.kers
Total runtime 3 ms.
[2026-05-22 17:52:28] [INFO ] Implicit Places using invariants in 511 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 586 ms to find 1 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 28/155 places, 59/194 transitions.
Applied a total of 0 rules in 3 ms. Remains 28 /28 variables (removed 0) and now considering 59/59 (removed 0) transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 762 ms. Remains : 28/155 places, 59/194 transitions.
Discarding 30 transitions out of 59. Remains 29
Initial state reduction rules removed 1 formulas.
RANDOM walk for 40000 steps (4714 resets) in 1937 ms. (20 steps per ms) remains 1/28 properties
BEST_FIRST walk for 40003 steps (897 resets) in 369 ms. (108 steps per ms) remains 1/1 properties
[2026-05-22 17:52:29] [INFO ] Flatten gal took : 161 ms
[2026-05-22 17:52:29] [INFO ] Flow matrix only has 58 transitions (discarded 1 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-18427260473975550732.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-5346208689732290623.kers'
[2026-05-22 17:52:29] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-18427260473975550732.kers, --Pflows, --basisKERS=/tmp/petrispot-output-5346208689732290623.kers]
Normalized transition count is 57 out of 58 initially.
Culled 0 columns in 0 ms.
// Phase 1: matrix 57 rows 28 cols 289 entries
Finished phase 1 with 22 SingleSign rule and 0 generalized
[2026-05-22 17:52:29] [INFO ] Computed 6 invariants in 0 ms
Computed 6 P flows in 6 ms.
Exported basis to /tmp/petrispot-output-5346208689732290623.kers
Total runtime 6 ms.
[2026-05-22 17:52:29] [INFO ] Flatten gal took : 34 ms
[2026-05-22 17:52:29] [INFO ] State equation strengthened by 11 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
[2026-05-22 17:52:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5727335539262802380.gal : 34 ms
At refinement iteration 1 (INCLUDED_ONLY) 0/2 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 7/9 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/9 variables, 7/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
[2026-05-22 17:52:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18136040843699268709.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5727335539262802380.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18136040843699268709.prop' '--nowitness' '--gen-order' 'FOLLOW'
At refinement iteration 5 (OVERLAPS) 19/28 variables, 4/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved

At refinement iteration 6 (INCLUDED_ONLY) 0/28 variables, 19/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
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/ReachabilityCardinality18136040843699268709.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 17
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :17 after 29
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :29 after 40
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :40 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 439
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,1149,0.071354,4724,2,276,10,2686,7,0,171,2107,0
Total reachable state count : 1149

Verifying 1 reachability properties.
Reachability property qltransition_30 does not hold.
FORMULA QuasiLiveness FALSE TECHNIQUES RANDOM_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING TOPOLOGICAL INITIAL_STATE
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 1/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem qltransition_30 is UNSAT
FORMULA QuasiLiveness FALSE TECHNIQUES RANDOM_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING SMT_REFINEMENT TOPOLOGICAL INITIAL_STATE
SMT process timed out in 386ms, After SMT, problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 2 out of 28 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 28/28 places, 59/59 transitions.
Graph (complete) has 125 edges and 28 vertex of which 26 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.1 ms
Discarding 2 places :
Also discarding 2 output transitions
Drop transitions (Output transitions of discarded places.) removed 2 transitions
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 7 place count 20 transition count 44
Iterating global reduction 0 with 6 rules applied. Total rules applied 13 place count 20 transition count 44
Ensure Unique test removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Iterating post reduction 0 with 9 rules applied. Total rules applied 22 place count 20 transition count 35
Applied a total of 22 rules in 28 ms. Remains 20 /28 variables (removed 8) and now considering 35/59 (removed 24) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28 ms. Remains : 20/28 places, 35/59 transitions.
Total runtime 2436 ms.

BK_STOP 1779472350542

--------------------
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
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -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 QuasiLiveness -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="AutonomousCar-PT-02b"
export BK_EXAMINATION="QuasiLiveness"
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 AutonomousCar-PT-02b, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r024-smll-177946789500017"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AutonomousCar-PT-02b.tgz
mv AutonomousCar-PT-02b execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;