Execution Chart

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

Trace from the execution

Waiting for the VM to be ready (probing ssh)
...............
=====================================================================
Generated by BenchKit 2-2979
Executing tool lola
Input is CircadianClock-PT-000001, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r014kn-qhx2-146347846100009
=====================================================================

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-0
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-1
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-10
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-11
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-12
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-13
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-14
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-15
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-2
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-3
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-4
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-5
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-6
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-7
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-8
FORMULA_NAME CircadianClock-PT-000001-ReachabilityFireability-9

=== Now, execution of the tool begins

BK_START 1463479908551

bkconf 3600
make: Nothing to be done for 'prepare'.
in benchkit_head lolaszeit 3540
ReachabilityFireability @ CircadianClock-PT-000001
FORMULA CircadianClock-PT-000001-ReachabilityFireability-0 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-1 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-2 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-3 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-4 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-5 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-6 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-7 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-8 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-9 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-10 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-11 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-12 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-13 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-14 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA CircadianClock-PT-000001-ReachabilityFireability-15 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
lola: LoLA will run for 3540 seconds at most (--timelimit)
lola: NET
lola: reading net from model.pnml.lola
lola: finished parsing
lola: closed net file model.pnml.lola
lola: 30/65536 symbol table entries, 0 collisions
lola: preprocessing...
lola: finding significant places
lola: 14 places, 16 transitions, 7 significant places
lola: computing forward-conflicting sets
lola: computing back-conflicting sets
lola: 26 transition conflict sets
lola: TASK
lola: reading formula from CircadianClock-PT-000001-ReachabilityFireability.task
lola: read: EF (FIREABLE(transl_a)) : AG (FIREABLE(deg_r)) : AG (FIREABLE(rel_a)) : AG (FIREABLE(transc_da_a)) : AG (!((!((FIREABLE(transl_a) OR FIREABLE(bind_r))) OR ((FIREABLE(rel_a) OR FIREABLE(deg_mr)) AND FIREABLE(bind_a))))) : AG (((FIREABLE(rel_a) OR !(FIREABLE(transc_dr_a))) AND FIREABLE(rel_a))) : EF (FIREABLE(deg_c)) : EF ((FIREABLE(rel_a) OR !((FIREABLE(rel_a) OR FIREABLE(transl_r))))) : EF (FIREAB... (shortened)
lola: formula length: 1264
lola: computing a collection of formulas
lola: RUNNING
lola: subprocess 0 will run for 221 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF (FIREABLE(transl_a))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 2 literals
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 1 will run for 236 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (FIREABLE(deg_r))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 1 literals
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 2 will run for 252 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (FIREABLE(rel_a))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: SUBRESULT
lola: result: no
lola: Transformation into DNF: expect 2 literals
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 3 will run for 272 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (FIREABLE(transc_da_a))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 2 literals
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 4 will run for 295 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (((FIREABLE(transl_a) OR FIREABLE(bind_r)) AND ((! FIREABLE(rel_a) AND ! FIREABLE(deg_mr)) OR ! FIREABLE(bind_a))))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: Transformation into DNF: expect 15 literals
lola: ========================================
lola: subprocess 5 will run for 321 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (((FIREABLE(rel_a) OR ! FIREABLE(transc_dr_a)) AND FIREABLE(rel_a)))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: Transformation into DNF: expect 8 literals
lola: ========================================
lola: subprocess 6 will run for 354 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF (FIREABLE(deg_c))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 2 literals
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 7 will run for 393 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF ((FIREABLE(rel_a) OR (! FIREABLE(rel_a) AND ! FIREABLE(transl_r))))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: SUBRESULT
lola: result: yes
lola: Transformation into DNF: expect 10 literals
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 8 will run for 442 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF (FIREABLE(deactive))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 3 literals
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 9 will run for 505 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF (((FIREABLE(deg_c) OR FIREABLE(deg_a)) AND (FIREABLE(transc_da_a) AND FIREABLE(deg_c))))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 11 literals
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 10 will run for 590 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (((! FIREABLE(transl_r) AND ! FIREABLE(transc_dr_a)) OR FIREABLE(deg_mr)))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 6 literals
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 11 will run for 708 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (((FIREABLE(bind_r) AND (FIREABLE(deactive) AND (FIREABLE(transc_dr) AND FIREABLE(deg_c)))) OR (FIREABLE(deg_c) OR ! FIREABLE(deg_a))))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 54 literals
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 12 will run for 885 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF (FIREABLE(deg_r))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 1 literals
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 13 will run for 1180 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF ((FIREABLE(transc_dr_a) AND (FIREABLE(deactive) AND (FIREABLE(deg_c) AND (FIREABLE(bind_a) AND (FIREABLE(transc_da) AND ((FIREABLE(transc_da) AND FIREABLE(transc_dr_a)) OR (FIREABLE(deg_a) AND FIREABLE(deg_c)))))))))
lola: ========================================
lola: SUBTASK
lola: checking reachability
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: Transformation into DNF: expect 29 literals
lola: SUBRESULT
lola: result: no
lola: The predicate is unreachable.
lola: ========================================
lola: subprocess 14 will run for 1770 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (((FIREABLE(bind_r) AND (! FIREABLE(transc_dr) OR ! FIREABLE(transl_a))) OR FIREABLE(deg_ma)))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: Transformation into DNF: expect 9 literals
lola: ========================================
lola: subprocess 15 will run for 3540 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG ((! FIREABLE(deg_r) AND (((FIREABLE(transl_a) AND FIREABLE(deg_r)) OR FIREABLE(transc_dr_a)) AND (FIREABLE(deg_r) OR (FIREABLE(transc_dr) OR FIREABLE(transc_da))))))
lola: ========================================
lola: SUBTASK
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: STORE
lola: using a bit-perfect encoder (--encoder=bit)
lola: using 28 bytes per marking, with 0 unused bits
lola: using a prefix tree store (--store=prefix)
lola: SEARCH
lola: using reachability graph (--search=depth)
lola: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: SUBRESULT
lola: result: no
lola: Transformation into DNF: expect 24 literals
lola: The predicate is not invariant.
lola: ========================================
lola: RESULT
lola: summary: yes no no no no no yes yes yes yes no no yes no no no

BK_STOP 1463479908816

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

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="CircadianClock-PT-000001"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="lola"
export BK_RESULT_DIR="/home/fko/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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

tar xzf /home/mcc/BenchKit/INPUTS/CircadianClock-PT-000001.tgz
mv CircadianClock-PT-000001 execution

# this is for BenchKit: explicit launching of the test

cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-2979"
echo " Executing tool lola"
echo " Input is CircadianClock-PT-000001, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r014kn-qhx2-146347846100009"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
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 ;