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-178024404700014.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-N14, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r367-tall-178024404700014
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.6M
-rw-r--r-- 1 mcc users 5.6K May 27 10:27 CTLCardinality.txt
-rw-r--r-- 1 mcc users 47K May 27 10:27 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K May 27 10:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K May 27 10:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Jun 16 12:27 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Jun 16 12:27 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Jun 16 12:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Jun 16 12:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 26 18:17 NewModel
-rw-r--r-- 1 mcc users 7.7K May 27 10:27 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 64K May 27 10:27 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K May 27 10:27 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 78K 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 1.2M 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-N14-UpperBounds-00
FORMULA_NAME LastZero-PT-N14-UpperBounds-01
FORMULA_NAME LastZero-PT-N14-UpperBounds-02
FORMULA_NAME LastZero-PT-N14-UpperBounds-03
FORMULA_NAME LastZero-PT-N14-UpperBounds-04
FORMULA_NAME LastZero-PT-N14-UpperBounds-05
FORMULA_NAME LastZero-PT-N14-UpperBounds-06
FORMULA_NAME LastZero-PT-N14-UpperBounds-07
FORMULA_NAME LastZero-PT-N14-UpperBounds-08
FORMULA_NAME LastZero-PT-N14-UpperBounds-09
FORMULA_NAME LastZero-PT-N14-UpperBounds-10
FORMULA_NAME LastZero-PT-N14-UpperBounds-11
FORMULA_NAME LastZero-PT-N14-UpperBounds-12
FORMULA_NAME LastZero-PT-N14-UpperBounds-13
FORMULA_NAME LastZero-PT-N14-UpperBounds-14
FORMULA_NAME LastZero-PT-N14-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1781614872524

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=LastZero-PT-N14
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-06-16 13:01:13] [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 13:01:13] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-16 13:01:13] [INFO ] Load time of PNML (sax parser for PT used): 188 ms
[2026-06-16 13:01:14] [INFO ] Transformed 480 places.
[2026-06-16 13:01:14] [INFO ] Transformed 3767 transitions.
[2026-06-16 13:01:14] [INFO ] Parsed PT model containing 480 places and 3767 transitions and 11693 arcs in 306 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 8 ms.
Deduced a syphon composed of 226 places in 27 ms
Reduce places removed 226 places and 2437 transitions.
Reduce places removed 1 places and 0 transitions.
FORMULA LastZero-PT-N14-UpperBounds-01 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N14-UpperBounds-02 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N14-UpperBounds-03 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N14-UpperBounds-04 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N14-UpperBounds-05 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N14-UpperBounds-07 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N14-UpperBounds-15 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 1, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 1, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-06-16 13:01:14] [INFO ] Flow matrix only has 1239 transitions (discarded 91 similar events)
// Phase 1: matrix 1239 rows 253 cols
[2026-06-16 13:01:14] [INFO ] Computed 15 invariants in 32 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 1, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, +inf, +inf, 1, 1, 1, +inf, +inf, +inf]
RANDOM walk for 10000 steps (232 resets) in 80 ms. (123 steps per ms)
FORMULA LastZero-PT-N14-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA LastZero-PT-N14-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA LastZero-PT-N14-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 60005 steps (187 resets) in 86 ms. (689 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 1, 0, 0, 0, 1] Max Struct:[1, +inf, +inf, +inf, +inf, +inf]
[2026-06-16 13:01:14] [INFO ] Flow matrix only has 1239 transitions (discarded 91 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 13:01:14] [INFO ] [Real]Absence check using 15 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:14] [INFO ] [Real]Absence check using state equation in 248 ms returned sat
[2026-06-16 13:01:14] [INFO ] State equation strengthened by 210 read => feed constraints.
[2026-06-16 13:01:14] [INFO ] [Real]Added 210 Read/Feed constraints in 32 ms returned sat
[2026-06-16 13:01:14] [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 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Nat]Absence check using state equation in 215 ms returned sat
[2026-06-16 13:01:15] [INFO ] [Nat]Added 210 Read/Feed constraints in 40 ms returned sat
[2026-06-16 13:01:15] [INFO ] Computed and/alt/rep : 357/1898/356 causal constraints (skipped 869 transitions) in 95 ms.
[2026-06-16 13:01:15] [INFO ] Added : 17 causal constraints over 4 iterations in 434 ms. Result :sat
Minimization took 114 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 15 positive place invariants in 5 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using state equation in 181 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 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Absence check using state equation in 189 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Real]Added 210 Read/Feed constraints in 27 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 15 positive place invariants in 5 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Nat]Absence check using state equation in 179 ms returned sat
[2026-06-16 13:01:16] [INFO ] [Nat]Added 210 Read/Feed constraints in 28 ms returned sat
[2026-06-16 13:01:16] [INFO ] Computed and/alt/rep : 357/1898/356 causal constraints (skipped 869 transitions) in 76 ms.
[2026-06-16 13:01:17] [INFO ] Added : 16 causal constraints over 4 iterations in 382 ms. Result :sat
Minimization took 107 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:17] [INFO ] [Real]Absence check using 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:17] [INFO ] [Real]Absence check using state equation in 196 ms returned sat
[2026-06-16 13:01:17] [INFO ] [Real]Added 210 Read/Feed constraints in 23 ms returned sat
[2026-06-16 13:01:17] [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 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:17] [INFO ] [Nat]Absence check using state equation in 184 ms returned sat
[2026-06-16 13:01:17] [INFO ] [Nat]Added 210 Read/Feed constraints in 30 ms returned sat
[2026-06-16 13:01:18] [INFO ] Computed and/alt/rep : 357/1898/356 causal constraints (skipped 869 transitions) in 77 ms.
[2026-06-16 13:01:18] [INFO ] Added : 6 causal constraints over 2 iterations in 246 ms. Result :sat
Minimization took 100 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:18] [INFO ] [Real]Absence check using 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:18] [INFO ] [Real]Absence check using state equation in 172 ms returned sat
[2026-06-16 13:01:18] [INFO ] [Real]Added 210 Read/Feed constraints in 25 ms returned sat
[2026-06-16 13:01:18] [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 13:01:18] [INFO ] [Nat]Absence check using 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:18] [INFO ] [Nat]Absence check using state equation in 163 ms returned sat
[2026-06-16 13:01:18] [INFO ] [Nat]Added 210 Read/Feed constraints in 26 ms returned sat
[2026-06-16 13:01:18] [INFO ] Computed and/alt/rep : 357/1898/356 causal constraints (skipped 869 transitions) in 71 ms.
[2026-06-16 13:01:19] [INFO ] Added : 14 causal constraints over 3 iterations in 285 ms. Result :sat
Minimization took 107 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:19] [INFO ] [Real]Absence check using 15 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:19] [INFO ] [Real]Absence check using state equation in 154 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[0, 1, 0, 0, 0, 1] Max Struct:[1, 1, +inf, +inf, +inf, 1]
FORMULA LastZero-PT-N14-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N14-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N14-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 1, 1] Max Struct:[+inf, +inf, +inf]
Support contains 3 out of 253 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 253/253 places, 1330/1330 transitions.
Graph (complete) has 1448 edges and 253 vertex of which 238 are kept as prefixes of interest. Removing 15 places using SCC suffix rule.5 ms
Discarding 15 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 105 transitions
Reduce isomorphic transitions removed 105 transitions.
Iterating post reduction 0 with 105 rules applied. Total rules applied 106 place count 238 transition count 1225
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 1 Pre rules applied. Total rules applied 106 place count 238 transition count 1224
Deduced a syphon composed of 1 places in 2 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 108 place count 237 transition count 1224
Applied a total of 108 rules in 84 ms. Remains 237 /253 variables (removed 16) and now considering 1224/1330 (removed 106) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 98 ms. Remains : 237/253 places, 1224/1330 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 1224 rows 237 cols
[2026-06-16 13:01:19] [INFO ] Computed 14 invariants in 6 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1, 1, 1] Max Struct:[+inf, +inf, +inf]
RANDOM walk for 1000000 steps (35714 resets) in 2266 ms. (441 steps per ms)
BEST_FIRST walk for 3000003 steps (11180 resets) in 1912 ms. (1568 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 1, 1] Max Struct:[+inf, +inf, +inf]
[2026-06-16 13:01:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:01:24] [INFO ] [Real]Absence check using 14 positive place invariants in 4 ms returned sat
[2026-06-16 13:01:24] [INFO ] [Real]Absence check using state equation in 142 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:01:24] [INFO ] [Real]Absence check using 14 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:24] [INFO ] [Real]Absence check using state equation in 153 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:01:24] [INFO ] [Real]Absence check using 14 positive place invariants in 3 ms returned sat
[2026-06-16 13:01:24] [INFO ] [Real]Absence check using state equation in 151 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[1, 1, 1] Max Struct:[1, 1, 1]
FORMULA LastZero-PT-N14-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N14-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N14-UpperBounds-08 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 13:01:25] [INFO ] Flatten gal took : 192 ms
[2026-06-16 13:01:25] [INFO ] Flatten gal took : 95 ms
[2026-06-16 13:01:25] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4795833710334845433.gal : 36 ms
[2026-06-16 13:01:25] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14151575144728337569.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/ReachabilityCardinality4795833710334845433.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14151575144728337569.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 11597 ms.

BK_STOP 1781614885338

--------------------
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-N14"
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-N14, 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-178024404700014"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/LastZero-PT-N14.tgz
mv LastZero-PT-N14 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 ;