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.r367-tall-178024404700012.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 LastZero-PT-N10, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r367-tall-178024404700012
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 904K
-rw-r--r-- 1 mcc users 6.1K May 27 10:27 CTLCardinality.txt
-rw-r--r-- 1 mcc users 56K May 27 10:27 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K May 27 10:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 57K May 27 10:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Jun 16 12:27 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Jun 16 12:27 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Jun 16 12:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Jun 16 12:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 26 18:17 NewModel
-rw-r--r-- 1 mcc users 12K May 27 10:27 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 106K May 27 10:27 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.5K May 27 10:27 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 73K May 27 10:27 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Jun 16 12:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Jun 16 12:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 26 18:17 equiv_col
-rw-r--r-- 1 mcc users 4 May 26 18:17 instance
-rw-r--r-- 1 mcc users 6 May 26 18:17 iscolored
-rw-r--r-- 1 mcc users 486K Jun 10 11:58 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 LastZero-PT-N10-UpperBounds-00
FORMULA_NAME LastZero-PT-N10-UpperBounds-01
FORMULA_NAME LastZero-PT-N10-UpperBounds-02
FORMULA_NAME LastZero-PT-N10-UpperBounds-03
FORMULA_NAME LastZero-PT-N10-UpperBounds-04
FORMULA_NAME LastZero-PT-N10-UpperBounds-05
FORMULA_NAME LastZero-PT-N10-UpperBounds-06
FORMULA_NAME LastZero-PT-N10-UpperBounds-07
FORMULA_NAME LastZero-PT-N10-UpperBounds-08
FORMULA_NAME LastZero-PT-N10-UpperBounds-09
FORMULA_NAME LastZero-PT-N10-UpperBounds-10
FORMULA_NAME LastZero-PT-N10-UpperBounds-11
FORMULA_NAME LastZero-PT-N10-UpperBounds-12
FORMULA_NAME LastZero-PT-N10-UpperBounds-13
FORMULA_NAME LastZero-PT-N10-UpperBounds-14
FORMULA_NAME LastZero-PT-N10-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1781614873091

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=LastZero-PT-N10
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-06-16 13:01:14] [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]
[2026-06-16 13:01:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-16 13:01:14] [INFO ] Load time of PNML (sax parser for PT used): 111 ms
[2026-06-16 13:01:14] [INFO ] Transformed 264 places.
[2026-06-16 13:01:14] [INFO ] Transformed 1531 transitions.
[2026-06-16 13:01:14] [INFO ] Parsed PT model containing 264 places and 1531 transitions and 4793 arcs in 210 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Deduced a syphon composed of 122 places in 8 ms
Reduce places removed 122 places and 981 transitions.
Reduce places removed 1 places and 0 transitions.
FORMULA LastZero-PT-N10-UpperBounds-00 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N10-UpperBounds-07 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N10-UpperBounds-10 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N10-UpperBounds-11 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N10-UpperBounds-12 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N10-UpperBounds-14 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 1, 0, 0, 0, 1] 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, 1, 0, 0, 0, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-06-16 13:01:14] [INFO ] Flow matrix only has 505 transitions (discarded 45 similar events)
// Phase 1: matrix 505 rows 141 cols
[2026-06-16 13:01:14] [INFO ] Computed 11 invariants in 21 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 1, 0, 0, 0, 1] Max Struct:[+inf, 1, +inf, 1, 1, +inf, +inf, +inf, 1, 1]
FORMULA LastZero-PT-N10-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 10000 steps (322 resets) in 58 ms. (169 steps per ms)
FORMULA LastZero-PT-N10-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA LastZero-PT-N10-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 70007 steps (394 resets) in 79 ms. (875 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 0, 1, 1, 1, 0, 0] Max Struct:[+inf, 1, +inf, +inf, +inf, +inf, 1]
[2026-06-16 13:01:14] [INFO ] Flow matrix only has 505 transitions (discarded 45 similar events)
[2026-06-16 13:01:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using 11 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using state equation in 121 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using state equation in 88 ms returned sat
[2026-06-16 13:01:15] [INFO ] State equation strengthened by 110 read => feed constraints.
[2026-06-16 13:01:15] [INFO ] [Real]Added 110 Read/Feed constraints in 19 ms returned sat
[2026-06-16 13:01:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:15] [INFO ] [Nat]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Nat]Absence check using state equation in 79 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Nat]Added 110 Read/Feed constraints in 12 ms returned sat
[2026-06-16 13:01:15] [INFO ] Computed and/alt/rep : 307/1848/306 causal constraints (skipped 189 transitions) in 45 ms.
[2026-06-16 13:01:15] [INFO ] Added : 9 causal constraints over 2 iterations in 163 ms. Result :sat
Minimization took 51 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using state equation in 71 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Real]Absence check using state equation in 69 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using state equation in 77 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using state equation in 72 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Added 110 Read/Feed constraints in 12 ms returned sat
[2026-06-16 13:01:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:16] [INFO ] [Nat]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Nat]Absence check using state equation in 65 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Nat]Added 110 Read/Feed constraints in 10 ms returned sat
[2026-06-16 13:01:16] [INFO ] Computed and/alt/rep : 307/1848/306 causal constraints (skipped 189 transitions) in 30 ms.
[2026-06-16 13:01:16] [INFO ] Added : 14 causal constraints over 3 iterations in 140 ms. Result :sat
Minimization took 42 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using state equation in 77 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Added 110 Read/Feed constraints in 15 ms returned sat
[2026-06-16 13:01:16] [INFO ] Computed and/alt/rep : 307/1848/306 causal constraints (skipped 189 transitions) in 32 ms.
[2026-06-16 13:01:16] [INFO ] Added : 13 causal constraints over 3 iterations in 166 ms. Result :sat
Minimization took 58 ms.
[2026-06-16 13:01:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:17] [INFO ] [Nat]Absence check using 11 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:17] [INFO ] [Nat]Absence check using state equation in 77 ms returned sat
[2026-06-16 13:01:17] [INFO ] [Nat]Added 110 Read/Feed constraints in 14 ms returned sat
[2026-06-16 13:01:17] [INFO ] Computed and/alt/rep : 307/1848/306 causal constraints (skipped 189 transitions) in 34 ms.
[2026-06-16 13:01:17] [INFO ] Added : 13 causal constraints over 3 iterations in 155 ms. Result :sat
Minimization took 44 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1, 0, 1, 1, 1, 0, 0] Max Struct:[1, 1, 1, 1, 1, +inf, 1]
FORMULA LastZero-PT-N10-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N10-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N10-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N10-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N10-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 1] Max Struct:[1, +inf]
Support contains 2 out of 141 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 141/141 places, 550/550 transitions.
Graph (complete) has 614 edges and 141 vertex of which 108 are kept as prefixes of interest. Removing 33 places using SCC suffix rule.1 ms
Discarding 33 places :
Also discarding 120 output transitions
Drop transitions (Output transitions of discarded places.) removed 120 transitions
Drop transitions (Empty/Sink Transition effects.) removed 55 transitions
Reduce isomorphic transitions removed 55 transitions.
Iterating post reduction 0 with 55 rules applied. Total rules applied 56 place count 108 transition count 375
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 1 Pre rules applied. Total rules applied 56 place count 108 transition count 374
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 58 place count 107 transition count 374
Applied a total of 58 rules in 33 ms. Remains 107 /141 variables (removed 34) and now considering 374/550 (removed 176) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 41 ms. Remains : 107/141 places, 374/550 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
// Phase 1: matrix 374 rows 107 cols
[2026-06-16 13:01:17] [INFO ] Computed 9 invariants in 5 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1, 1] Max Struct:[1, +inf]
FORMULA LastZero-PT-N10-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000000 steps (55555 resets) in 1456 ms. (686 steps per ms)
BEST_FIRST walk for 1000001 steps (8634 resets) in 498 ms. (2004 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-06-16 13:01:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:01:19] [INFO ] [Real]Absence check using 9 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:19] [INFO ] [Real]Absence check using state equation in 56 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[1]
FORMULA LastZero-PT-N10-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided 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 )
[2026-06-16 13:01:19] [INFO ] Flatten gal took : 60 ms
[2026-06-16 13:01:19] [INFO ] Flatten gal took : 25 ms
[2026-06-16 13:01:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1389370889457634171.gal : 19 ms
[2026-06-16 13:01:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3632467628750993849.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/ReachabilityCardinality1389370889457634171.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3632467628750993849.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 5534 ms.

BK_STOP 1781614879922

--------------------
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="LastZero-PT-N10"
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 LastZero-PT-N10, 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 r367-tall-178024404700012"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/LastZero-PT-N10.tgz
mv LastZero-PT-N10 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 ;