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.r064-smll-177946904300139.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 gold2025
Input is CircularTrains-PT-012, examination is Liveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r064-smll-177946904300139
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 508K
-rw-r--r-- 1 mcc users 7.6K Mar 5 14:29 CTLCardinality.txt
-rw-r--r-- 1 mcc users 80K Mar 5 14:29 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Mar 5 14:29 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Mar 5 14:29 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.0K Mar 15 08:05 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Mar 15 08:05 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 08:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 15 08:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Mar 5 14:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 118K Mar 5 14:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 14K Mar 5 14:29 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 115K Mar 5 14:29 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 08:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 08:05 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 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 booleans
BOOL_VECTOR

FORMULA_NAME Liveness

=== Now, execution of the tool begins

BK_START 1779482253970

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=Liveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=CircularTrains-PT-012
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
Liveness PT
Running Version 202505121319
[2026-05-22 20:37:36] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, Liveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-22 20:37:36] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-22 20:37:36] [INFO ] Load time of PNML (sax parser for PT used): 66 ms
[2026-05-22 20:37:36] [INFO ] Transformed 24 places.
[2026-05-22 20:37:36] [INFO ] Transformed 12 transitions.
[2026-05-22 20:37:36] [INFO ] Parsed PT model containing 24 places and 12 transitions and 48 arcs in 273 ms.
Built sparse matrix representations for Structural reductions in 10 ms.14108KB memory used
Starting structural reductions in DEADLOCK mode, iteration 0 : 24/24 places, 12/12 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 21 ms. Remains 24 /24 variables (removed 0) and now considering 12/12 (removed 0) transitions.
Finished structural reductions in DEADLOCK mode , in 1 iterations and 48 ms. Remains : 24/24 places, 12/12 transitions.
Starting structural reductions in DEADLOCK mode, iteration 0 : 24/24 places, 12/12 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 3 ms. Remains 24 /24 variables (removed 0) and now considering 12/12 (removed 0) transitions.
// Phase 1: matrix 12 rows 24 cols
[2026-05-22 20:37:37] [INFO ] Computed 13 invariants in 9 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:37] [INFO ] Implicit Places using invariants in 279 ms returned []
[2026-05-22 20:37:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:37] [INFO ] Implicit Places using invariants and state equation in 83 ms returned []
Implicit Place search using SMT with State Equation took 436 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-22 20:37:37] [INFO ] Redundant transitions in 1 ms returned []
Running 8 sub problems to find dead transitions.
[2026-05-22 20:37:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 2 (OVERLAPS) 5/21 variables, 5/7 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/21 variables, 2/9 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/21 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 5 (OVERLAPS) 3/24 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/24 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 7 (OVERLAPS) 12/36 variables, 24/37 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 8 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 37 constraints, problems are : Problem set: 0 solved, 8 unsolved in 515 ms.
Refiners :[Positive P Invariants (semi-flows): 5/5 constraints, Generalized P Invariants (flows): 8/8 constraints, State Equation: 24/24 constraints, PredecessorRefiner: 8/8 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 8 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 2 (OVERLAPS) 5/21 variables, 5/7 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/21 variables, 2/9 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/21 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 5 (OVERLAPS) 3/24 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/24 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 7 (OVERLAPS) 12/36 variables, 24/37 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 8/45 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/36 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 10 (OVERLAPS) 0/36 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 8 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 45 constraints, problems are : Problem set: 0 solved, 8 unsolved in 401 ms.
Refiners :[Positive P Invariants (semi-flows): 5/5 constraints, Generalized P Invariants (flows): 8/8 constraints, State Equation: 24/24 constraints, PredecessorRefiner: 8/8 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 952ms problems are : Problem set: 0 solved, 8 unsolved
Search for dead transitions found 0 dead transitions in 962ms
Finished structural reductions in DEADLOCK mode , in 1 iterations and 1423 ms. Remains : 24/24 places, 12/12 transitions.
Random walk for 1250000 steps, including 0 resets, run took 1440 ms (no deadlock found). (steps per millisecond=868 )
Random directed walk for 1250002 steps, including 0 resets, run took 873 ms (no deadlock found). (steps per millisecond=1431 )
[2026-05-22 20:37:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 300.0 s and query timeout 30000.0 ms
[2026-05-22 20:37:40] [INFO ] [Real]Absence check using 5 positive place invariants in 3 ms returned sat
[2026-05-22 20:37:40] [INFO ] [Real]Absence check using 5 positive and 8 generalized place invariants in 6 ms returned unsat
Starting structural reductions in LIVENESS mode, iteration 0 : 24/24 places, 12/12 transitions.
Applied a total of 0 rules in 3 ms. Remains 24 /24 variables (removed 0) and now considering 12/12 (removed 0) transitions.
[2026-05-22 20:37:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:40] [INFO ] Implicit Places using invariants in 106 ms returned [5, 15, 20, 21]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 112 ms to find 4 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 20/24 places, 12/12 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 20 transition count 8
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 8 place count 16 transition count 8
Applied a total of 8 rules in 16 ms. Remains 16 /20 variables (removed 4) and now considering 8/12 (removed 4) transitions.
// Phase 1: matrix 8 rows 16 cols
[2026-05-22 20:37:40] [INFO ] Computed 9 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:40] [INFO ] Implicit Places using invariants in 56 ms returned []
[2026-05-22 20:37:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:41] [INFO ] Implicit Places using invariants and state equation in 61 ms returned []
Implicit Place search using SMT with State Equation took 119 ms to find 0 implicit places.
Starting structural reductions in LIVENESS mode, iteration 2 : 16/24 places, 8/12 transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 250 ms. Remains : 16/24 places, 8/12 transitions.
Initial state reduction rules removed 4 formulas.
RANDOM walk for 26 steps (0 resets) in 22 ms. (1 steps per ms) remains 0/4 properties
[2026-05-22 20:37:41] [INFO ] Flatten gal took : 38 ms
[2026-05-22 20:37:41] [INFO ] Flatten gal took : 7 ms
[2026-05-22 20:37:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5252477056510769314.gal : 8 ms
[2026-05-22 20:37:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2387212061839360658.prop : 0 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/ReachabilityCardinality5252477056510769314.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2387212061839360658.prop' '--nowitness' '--gen-order' 'FOLLOW'

ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Able to resolve query QuasiLiveness after proving 8 properties.
Starting structural reductions in LIVENESS mode, iteration 0 : 24/24 places, 12/12 transitions.
Applied a total of 0 rules in 1 ms. Remains 24 /24 variables (removed 0) and now considering 12/12 (removed 0) transitions.
// Phase 1: matrix 12 rows 24 cols
[2026-05-22 20:37:41] [INFO ] Computed 13 invariants in 2 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:41] [INFO ] Implicit Places using invariants in 84 ms returned [5, 15, 20, 21]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 86 ms to find 4 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 20/24 places, 12/12 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 20 transition count 8
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 8 place count 16 transition count 8
Applied a total of 8 rules in 2 ms. Remains 16 /20 variables (removed 4) and now considering 8/12 (removed 4) transitions.
// Phase 1: matrix 8 rows 16 cols
[2026-05-22 20:37:41] [INFO ] Computed 9 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:41] [INFO ] Implicit Places using invariants in 56 ms returned []
[2026-05-22 20:37:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 20:37:41] [INFO ] Implicit Places using invariants and state equation in 60 ms returned []
Implicit Place search using SMT with State Equation took 118 ms to find 0 implicit places.
Starting structural reductions in LIVENESS mode, iteration 2 : 16/24 places, 8/12 transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 211 ms. Remains : 16/24 places, 8/12 transitions.
Net is quasi-live, checking if it is reversible to establish liveness.
Net is conservative; using simplified expression for initial state.
[2026-05-22 20:37:41] [INFO ] Flatten gal took : 5 ms
[2026-05-22 20:37:41] [INFO ] Flatten gal took : 5 ms
[2026-05-22 20:37:41] [INFO ] Time to serialize gal into /tmp/CTLFireability3736817973366072350.gal : 2 ms
[2026-05-22 20:37:41] [INFO ] Time to serialize properties into /tmp/CTLFireability13059701099287609151.ctl : 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLFireability3736817973366072350.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLFireability13059701099287609151.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...284
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,70,0.022856,3744,2,65,5,335,6,0,75,284,0


Converting to forward existential form...Done !
original formula: AG(EF(((((F7==1)&&(Section_9==1))&&((Section_6==1)&&(Section_12==1)))&&(((F1==1)&&(Section_3==1))&&((F10==1)&&(F4==1))))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U ((((F7==1)&&(Section_9==1))&&((Section_6==1)&&(Section_12==1)))&&(((F1==1)&&(Sect...200
Reverse transition relation is exact ! Faster fixpoint algorithm enabled.
(forward)formula 0,1,0.03114,4000,1,0,5,750,14,0,350,375,5
Formula is TRUE !

***************************************

Able to resolve query Liveness after proving 1 properties.
FORMULA Liveness TRUE TECHNIQUES RANDOM_WALK DECISION_DIAGRAMS TOPOLOGICAL QUASI_LIVE_REVERSIBLE INITIAL_STATE
Total runtime 5258 ms.

BK_STOP 1779482261805

--------------------
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
+ [[ Liveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution Liveness -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_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination Liveness -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="CircularTrains-PT-012"
export BK_EXAMINATION="Liveness"
export BK_TOOL="gold2025"
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 gold2025"
echo " Input is CircularTrains-PT-012, examination is Liveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r064-smll-177946904300139"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CircularTrains-PT-012.tgz
mv CircularTrains-PT-012 execution
cd execution
if [ "Liveness" = "ReachabilityDeadlock" ] || [ "Liveness" = "UpperBounds" ] || [ "Liveness" = "QuasiLiveness" ] || [ "Liveness" = "StableMarking" ] || [ "Liveness" = "Liveness" ] || [ "Liveness" = "OneSafe" ] || [ "Liveness" = "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 [ "Liveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "Liveness" != "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 "Liveness.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 '' Liveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "Liveness" = "ReachabilityDeadlock" ] || [ "Liveness" = "QuasiLiveness" ] || [ "Liveness" = "StableMarking" ] || [ "Liveness" = "Liveness" ] || [ "Liveness" = "OneSafe" ] ; then
echo "FORMULA_NAME Liveness"
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 ;