Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2023-input.r437-tajo-167905985200237.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2023-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
.........................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is SieveSingleMsgMbox-PT-d0m36, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r437-tajo-167905985200237
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 564K
-rw-r--r-- 1 mcc users 7.3K Feb 26 10:29 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Feb 26 10:29 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K Feb 26 10:28 CTLFireability.txt
-rw-r--r-- 1 mcc users 49K Feb 26 10:28 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Feb 25 17:05 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 17:05 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 17:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 17:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 17K Feb 26 10:30 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 188K Feb 26 10:30 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.1K Feb 26 10:30 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 59K Feb 26 10:30 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 17:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 17:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 57K Mar 5 18:23 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 1679517200408

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=lolaxred
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=SieveSingleMsgMbox-PT-d0m36
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-22 20:33:21] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -timeout, 180, -rebuildPNML]
[2023-03-22 20:33:21] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-22 20:33:22] [INFO ] Load time of PNML (sax parser for PT used): 40 ms
[2023-03-22 20:33:22] [INFO ] Transformed 262 places.
[2023-03-22 20:33:22] [INFO ] Transformed 73 transitions.
[2023-03-22 20:33:22] [INFO ] Parsed PT model containing 262 places and 73 transitions and 292 arcs in 98 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 262/262 places, 73/73 transitions.
Reduce places removed 192 places and 0 transitions.
Iterating post reduction 0 with 192 rules applied. Total rules applied 192 place count 70 transition count 73
Applied a total of 192 rules in 10 ms. Remains 70 /262 variables (removed 192) and now considering 73/73 (removed 0) transitions.
// Phase 1: matrix 73 rows 70 cols
[2023-03-22 20:33:22] [INFO ] Computed 5 place invariants in 7 ms
[2023-03-22 20:33:22] [INFO ] Implicit Places using invariants in 179 ms returned []
[2023-03-22 20:33:22] [INFO ] Invariant cache hit.
[2023-03-22 20:33:22] [INFO ] State equation strengthened by 31 read => feed constraints.
[2023-03-22 20:33:22] [INFO ] Implicit Places using invariants and state equation in 124 ms returned []
Implicit Place search using SMT with State Equation took 329 ms to find 0 implicit places.
[2023-03-22 20:33:22] [INFO ] Invariant cache hit.
[2023-03-22 20:33:22] [INFO ] Dead Transitions using invariants and state equation in 50 ms found 0 transitions.
Starting structural reductions in LIVENESS mode, iteration 1 : 70/262 places, 73/73 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 392 ms. Remains : 70/262 places, 73/73 transitions.
Discarding 10 transitions out of 73. Remains 63
Initial state reduction rules removed 1 formulas.
Incomplete random walk after 10000 steps, including 2252 resets, run finished after 307 ms. (steps per millisecond=32 ) properties (out of 62) seen :23
Incomplete Best-First random walk after 1000 steps, including 43 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 39) seen :1
Incomplete Best-First random walk after 1001 steps, including 47 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1000 steps, including 46 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 42 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1000 steps, including 53 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 49 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 41 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 49 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 51 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 45 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 49 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 54 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 38) seen :0
Incomplete Best-First random walk after 1001 steps, including 41 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 38) seen :1
Incomplete Best-First random walk after 1000 steps, including 48 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 37) seen :0
Incomplete Best-First random walk after 1000 steps, including 42 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 37) seen :0
Incomplete Best-First random walk after 1001 steps, including 52 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 37) seen :5
Incomplete Best-First random walk after 1000 steps, including 52 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 52 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 51 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 52 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 45 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 41 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 200 resets, run finished after 16 ms. (steps per millisecond=62 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 122 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 90 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 104 resets, run finished after 15 ms. (steps per millisecond=66 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 109 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 92 resets, run finished after 11 ms. (steps per millisecond=90 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1000 steps, including 115 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 98 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 108 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 96 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 92 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 100 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 106 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 32) seen :0
Incomplete Best-First random walk after 1001 steps, including 104 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 32) seen :0
Running SMT prover for 32 properties.
[2023-03-22 20:33:23] [INFO ] Invariant cache hit.
[2023-03-22 20:33:23] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 20:33:23] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2023-03-22 20:33:23] [INFO ] After 197ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1 real:31
[2023-03-22 20:33:23] [INFO ] State equation strengthened by 31 read => feed constraints.
[2023-03-22 20:33:23] [INFO ] After 8ms SMT Verify possible using 31 Read/Feed constraints in real domain returned unsat :0 sat :0 real:32
[2023-03-22 20:33:23] [INFO ] After 355ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:32
[2023-03-22 20:33:23] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-03-22 20:33:23] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2023-03-22 20:33:23] [INFO ] After 163ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :32
[2023-03-22 20:33:24] [INFO ] After 212ms SMT Verify possible using 31 Read/Feed constraints in natural domain returned unsat :0 sat :32
[2023-03-22 20:33:24] [INFO ] Deduced a trap composed of 38 places in 34 ms of which 3 ms to minimize.
[2023-03-22 20:33:24] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 44 ms
[2023-03-22 20:33:24] [INFO ] Deduced a trap composed of 28 places in 37 ms of which 1 ms to minimize.
[2023-03-22 20:33:24] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 45 ms
[2023-03-22 20:33:24] [INFO ] After 603ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :32
Attempting to minimize the solution found.
Minimization took 230 ms.
[2023-03-22 20:33:24] [INFO ] After 1124ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :32
Parikh walk visited 1 properties in 3247 ms.
Support contains 38 out of 70 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 70/70 places, 73/73 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 67 transition count 70
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 67 transition count 70
Applied a total of 6 rules in 14 ms. Remains 67 /70 variables (removed 3) and now considering 70/73 (removed 3) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 67/70 places, 70/73 transitions.
Incomplete random walk after 1000000 steps, including 223651 resets, run finished after 22856 ms. (steps per millisecond=43 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100001 steps, including 4818 resets, run finished after 837 ms. (steps per millisecond=119 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100000 steps, including 4756 resets, run finished after 796 ms. (steps per millisecond=125 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100001 steps, including 4793 resets, run finished after 807 ms. (steps per millisecond=123 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100001 steps, including 4861 resets, run finished after 522 ms. (steps per millisecond=191 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100000 steps, including 4794 resets, run finished after 763 ms. (steps per millisecond=131 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100000 steps, including 4868 resets, run finished after 785 ms. (steps per millisecond=127 ) properties (out of 31) seen :0
Incomplete Best-First random walk after 100001 steps, including 4926 resets, run finished after 868 ms. (steps per millisecond=115 ) properties (out of 31) seen :1
Incomplete Best-First random walk after 100001 steps, including 4906 resets, run finished after 714 ms. (steps per millisecond=140 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4836 resets, run finished after 861 ms. (steps per millisecond=116 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4754 resets, run finished after 584 ms. (steps per millisecond=171 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 4840 resets, run finished after 642 ms. (steps per millisecond=155 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 4734 resets, run finished after 793 ms. (steps per millisecond=126 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4851 resets, run finished after 822 ms. (steps per millisecond=121 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4870 resets, run finished after 819 ms. (steps per millisecond=122 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 4803 resets, run finished after 825 ms. (steps per millisecond=121 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4756 resets, run finished after 815 ms. (steps per millisecond=122 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4746 resets, run finished after 516 ms. (steps per millisecond=193 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 4677 resets, run finished after 650 ms. (steps per millisecond=153 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 20000 resets, run finished after 1358 ms. (steps per millisecond=73 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10414 resets, run finished after 1078 ms. (steps per millisecond=92 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10309 resets, run finished after 1039 ms. (steps per millisecond=96 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 10298 resets, run finished after 1062 ms. (steps per millisecond=94 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 10347 resets, run finished after 1080 ms. (steps per millisecond=92 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10395 resets, run finished after 1023 ms. (steps per millisecond=97 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10329 resets, run finished after 1058 ms. (steps per millisecond=94 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 10275 resets, run finished after 1054 ms. (steps per millisecond=94 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10213 resets, run finished after 1068 ms. (steps per millisecond=93 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10420 resets, run finished after 1096 ms. (steps per millisecond=91 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100001 steps, including 10121 resets, run finished after 1083 ms. (steps per millisecond=92 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10222 resets, run finished after 1091 ms. (steps per millisecond=91 ) properties (out of 30) seen :0
Incomplete Best-First random walk after 100000 steps, including 10381 resets, run finished after 1109 ms. (steps per millisecond=90 ) properties (out of 30) seen :0
Finished probabilistic random walk after 618670 steps, run visited all 30 properties in 2621 ms. (steps per millisecond=236 )
Probabilistic random walk after 618670 steps, saw 319107 distinct states, run finished after 2621 ms. (steps per millisecond=236 ) properties seen :30
Able to resolve query QuasiLiveness after proving 63 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PARIKH_WALK PROBABILISTIC_WALK BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 59030 ms.
ITS solved all properties within timeout

BK_STOP 1679517261125

--------------------
content from stderr:

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -timeout 180 -rebuildPNML

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="SieveSingleMsgMbox-PT-d0m36"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="lolaxred"
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 2-5348"
echo " Executing tool lolaxred"
echo " Input is SieveSingleMsgMbox-PT-d0m36, 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 r437-tajo-167905985200237"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SieveSingleMsgMbox-PT-d0m36.tgz
mv SieveSingleMsgMbox-PT-d0m36 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.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -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 ;