fond
Model Checking Contest 2026
16th edition, Hamburg, Germany, June 23, 2026
Execution of r032-smll-177946790700028
Last Updated
Jun 17, 2026

About the Execution of 2025-gold for AutonomousCar-PT-03b

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
361.123 7305.00 19768.00 158.70 T normal

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.r032-smll-177946790700028.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 AutonomousCar-PT-03b, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r032-smll-177946790700028
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 512K
-rw-r--r-- 1 mcc users 5.9K Mar 5 16:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 61K Mar 5 16:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.8K Mar 5 16:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K Mar 5 16:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 15 07:18 LTLCardinality.txt
-rw-r--r-- 1 mcc users 30K 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 18K Mar 15 07:18 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Mar 5 16:47 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 113K Mar 5 16:47 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.7K Mar 5 16:47 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 76K Mar 5 16:47 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 75K 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 StableMarking

=== Now, execution of the tool begins

BK_START 1779472477931

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=AutonomousCar-PT-03b
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
StableMarking PT
Running Version 202505121319
[2026-05-22 17:54:40] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-22 17:54:40] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-22 17:54:40] [INFO ] Load time of PNML (sax parser for PT used): 151 ms
[2026-05-22 17:54:40] [INFO ] Transformed 190 places.
[2026-05-22 17:54:40] [INFO ] Transformed 273 transitions.
[2026-05-22 17:54:40] [INFO ] Found NUPN structural information;
[2026-05-22 17:54:40] [INFO ] Parsed PT model containing 190 places and 273 transitions and 1051 arcs in 386 ms.
Graph (trivial) has 181 edges and 190 vertex of which 4 / 190 are part of one of the 2 SCC in 5 ms
Free SCC test removed 2 places
Structural test allowed to assert that 52 places are NOT stable. Took 27 ms.
Ensure Unique test removed 2 transitions
Reduce redundant transitions removed 2 transitions.
[2026-05-22 17:54:41] [INFO ] Flatten gal took : 164 ms
[2026-05-22 17:54:41] [INFO ] Flatten gal took : 77 ms
RANDOM walk for 40000 steps (462 resets) in 2667 ms. (14 steps per ms) remains 1/138 properties
[2026-05-22 17:54:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6236378632337157380.gal : 46 ms
[2026-05-22 17:54:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14588932615486254813.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/ReachabilityCardinality6236378632337157380.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14588932615486254813.prop' '--nowitness' '--gen-order' 'FOLLOW'

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 ...329
BEST_FIRST walk for 40004 steps (111 resets) in 514 ms. (77 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality14588932615486254813.prop.
[2026-05-22 17:54:41] [INFO ] Flow matrix only has 270 transitions (discarded 1 similar events)
// Phase 1: matrix 270 rows 188 cols
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 4
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :4 after 5
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :5 after 6
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :6 after 23
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :23 after 48
[2026-05-22 17:54:41] [INFO ] Computed 8 invariants in 16 ms
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :48 after 76
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :76 after 1654
[2026-05-22 17:54:42] [INFO ] State equation strengthened by 1 read => feed constraints.
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1654 after 12743
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :12743 after 49797
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/1 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 28/29 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/29 variables, 28/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/29 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :49797 after 256186
At refinement iteration 5 (OVERLAPS) 159/188 variables, 7/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/188 variables, 159/196 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/188 variables, 0/196 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :256186 after 579451
At refinement iteration 8 (OVERLAPS) 269/457 variables, 188/384 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/457 variables, 0/384 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 1/458 variables, 1/385 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/458 variables, 0/385 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/458 variables, 0/385 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 458/458 variables, and 385 constraints, problems are : Problem set: 0 solved, 1 unsolved in 827 ms.
Refiners :[Domain max(s): 188/188 constraints, Positive P Invariants (semi-flows): 8/8 constraints, State Equation: 188/188 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/1 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 28/29 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/29 variables, 28/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/29 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 159/188 variables, 7/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/188 variables, 159/196 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 17:54:43] [INFO ] Deduced a trap composed of 9 places in 271 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :579451 after 3.21518e+07
[2026-05-22 17:54:43] [INFO ] Deduced a trap composed of 22 places in 242 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 17:54:43] [INFO ] Deduced a trap composed of 24 places in 305 ms of which 83 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 17:54:44] [INFO ] Deduced a trap composed of 12 places in 161 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 17:54:44] [INFO ] Deduced a trap composed of 21 places in 160 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 17:54:44] [INFO ] Deduced a trap composed of 22 places in 130 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
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,1.38653e+08,2.67689,66136,2,8517,17,208948,7,0,1020,260869,0
Total reachable state count : 138652743

Verifying 1 reachability properties.
Invariant property smplace_184 is true.
FORMULA StableMarking TRUE TECHNIQUES RANDOM_WALK MARKED_SUFFIX_TEST DECISION_DIAGRAMS TRIVIAL_UNMARKED_SCC_TEST COLLATERAL_PROCESSING TOPOLOGICAL
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-22 17:54:44] [INFO ] Deduced a trap composed of 22 places in 141 ms of which 9 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/188 variables, 7/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/188 variables, 0/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem smplace_184 is UNSAT
FORMULA StableMarking TRUE TECHNIQUES RANDOM_WALK MARKED_SUFFIX_TEST DECISION_DIAGRAMS TRIVIAL_UNMARKED_SCC_TEST COLLATERAL_PROCESSING SMT_REFINEMENT TOPOLOGICAL
SMT process timed out in 2780ms, After SMT, problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 1 out of 188 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 188/188 places, 271/271 transitions.
Graph (complete) has 436 edges and 188 vertex of which 181 are kept as prefixes of interest. Removing 7 places using SCC suffix rule.2 ms
Discarding 7 places :
Also discarding 7 output transitions
Drop transitions (Output transitions of discarded places.) removed 7 transitions
Drop transitions (Empty/Sink Transition effects.) removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 87 transitions
Trivial Post-agglo rules discarded 87 transitions
Performed 87 trivial Post agglomeration. Transition count delta: 87
Iterating post reduction 0 with 89 rules applied. Total rules applied 90 place count 181 transition count 175
Reduce places removed 87 places and 0 transitions.
Ensure Unique test removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 13 transitions
Trivial Post-agglo rules discarded 13 transitions
Performed 13 trivial Post agglomeration. Transition count delta: 13
Iterating post reduction 1 with 111 rules applied. Total rules applied 201 place count 94 transition count 151
Reduce places removed 13 places and 0 transitions.
Iterating post reduction 2 with 13 rules applied. Total rules applied 214 place count 81 transition count 151
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 5 Pre rules applied. Total rules applied 214 place count 81 transition count 146
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 3 with 10 rules applied. Total rules applied 224 place count 76 transition count 146
Discarding 16 places :
Symmetric choice reduction at 3 with 16 rule applications. Total rules 240 place count 60 transition count 130
Iterating global reduction 3 with 16 rules applied. Total rules applied 256 place count 60 transition count 130
Ensure Unique test removed 36 transitions
Reduce isomorphic transitions removed 36 transitions.
Iterating post reduction 3 with 36 rules applied. Total rules applied 292 place count 60 transition count 94
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 2 Pre rules applied. Total rules applied 292 place count 60 transition count 92
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 4 with 4 rules applied. Total rules applied 296 place count 58 transition count 92
Discarding 4 places :
Symmetric choice reduction at 4 with 4 rule applications. Total rules 300 place count 54 transition count 82
Iterating global reduction 4 with 4 rules applied. Total rules applied 304 place count 54 transition count 82
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 4 with 6 rules applied. Total rules applied 310 place count 54 transition count 76
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 5 with 3 rules applied. Total rules applied 313 place count 51 transition count 76
Performed 18 Post agglomeration using F-continuation condition.Transition count delta: 18
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 6 with 36 rules applied. Total rules applied 349 place count 33 transition count 58
Discarding 3 places :
Symmetric choice reduction at 6 with 3 rule applications. Total rules 352 place count 30 transition count 46
Iterating global reduction 6 with 3 rules applied. Total rules applied 355 place count 30 transition count 46
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -18
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 6 with 4 rules applied. Total rules applied 359 place count 28 transition count 64
Free-agglomeration rule applied 1 times.
Iterating global reduction 6 with 1 rules applied. Total rules applied 360 place count 28 transition count 63
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 6 with 1 rules applied. Total rules applied 361 place count 27 transition count 63
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 7 with 1 rules applied. Total rules applied 362 place count 27 transition count 63
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 7 with 1 rules applied. Total rules applied 363 place count 26 transition count 62
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 7 with 1 rules applied. Total rules applied 364 place count 25 transition count 62
Applied a total of 364 rules in 94 ms. Remains 25 /188 variables (removed 163) and now considering 62/271 (removed 209) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 106 ms. Remains : 25/188 places, 62/271 transitions.
Total runtime 4460 ms.

BK_STOP 1779472485236

--------------------
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
+ [[ StableMarking = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StableMarking -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 StableMarking -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-03b"
export BK_EXAMINATION="StableMarking"
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 AutonomousCar-PT-03b, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r032-smll-177946790700028"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AutonomousCar-PT-03b.tgz
mv AutonomousCar-PT-03b execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.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 '' StableMarking.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;