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 Kanban-PT-0020, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r062kn-blw3-146358896800124
=====================================================================

--------------------
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 Kanban-PT-0020-ReachabilityCardinality-0
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-1
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-10
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-11
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-12
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-13
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-14
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-15
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-2
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-3
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-4
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-5
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-6
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-7
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-8
FORMULA_NAME Kanban-PT-0020-ReachabilityCardinality-9

=== Now, execution of the tool begins

BK_START 1463594891381

bkconf 3600
make: Nothing to be done for 'prepare'.
in benchkit_head lolaszeit 3540
ReachabilityCardinality @ Kanban-PT-0020
FORMULA Kanban-PT-0020-ReachabilityCardinality-0 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-1 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-2 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-3 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-4 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-5 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-6 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-7 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-8 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-9 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-10 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-11 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-12 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-13 FALSE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-14 TRUE TECHNIQUES PARALLEL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS TOPOLOGICAL
FORMULA Kanban-PT-0020-ReachabilityCardinality-15 TRUE 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: 32/65536 symbol table entries, 0 collisions
lola: preprocessing...
lola: finding significant places
lola: 16 places, 16 transitions, 11 significant places
lola: computing forward-conflicting sets
lola: computing back-conflicting sets
lola: 14 transition conflict sets
lola: TASK
lola: reading formula from Kanban-PT-0020-ReachabilityCardinality.task
lola: read: EF (P3 <= Pout1) : AG (!((P3 <= Pout4 OR !(Pback3 <= Pback3)))) : EF ((((2 <= P4 OR 2 <= P2) AND (3 <= Pout3 AND Pm1 <= Pback3)) AND !(!(P4 <= P4)))) : AG (2 <= P4) : AG ((((1 <= Pout3 OR 1 <= Pm4) OR (3 <= Pback3 OR 2 <= P4)) AND ((Pout2 <= Pm2 OR 1 <= Pout2) OR (3 <= Pm4 OR 2 <= Pback3)))) : AG (Pout2 <= P1) : AG (((!(Pback3 <= Pback3) AND !(Pback3 <= Pout3)) OR Pm1 <= P2)) : EF ((((3 <= P3 AND ... (shortened)
lola: formula length: 908
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 (P3 + -Pout1 <= 0)
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 44 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 1 will run for 236 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (P3 + -Pout4 > 0)
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 44 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: EF (((-P4 <= -2 OR -P2 <= -2) AND (-Pout3 <= -3 AND -Pback3 + Pm1 <= 0)))
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 44 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: yes
lola: The predicate is reachable.
lola: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-2.sara
lola: ========================================
lola: subprocess 3 will run for 272 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (-P4 <= -2)
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 44 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 4 will run for 295 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (((-Pout3 <= -1 OR (-Pm4 <= -1 OR (-Pback3 <= -3 OR -P4 <= -2))) AND (-Pm2 + Pout2 <= 0 OR (-Pout2 <= -1 OR (-Pm4 <= -3 OR -Pback3 <= -2)))))
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 44 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 8 literals
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 5 will run for 321 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (Pout2 + -P1 <= 0)
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 44 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: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-5.sara
lola: ========================================
lola: subprocess 6 will run for 354 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (Pm1 + -P2 <= 0)
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 44 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: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-6.sara
lola: ========================================
lola: subprocess 7 will run for 393 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF ((-P3 <= -3 AND (-Pm2 <= -3 AND (Pback2 + -Pout1 <= 0 AND (P4 + -P2 > 0 AND Pback2 + -Pm1 > 0)))))
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 44 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 5 literals
lola: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-7.sara
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 8 will run for 442 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG ((-Pm2 + Pout3 > 0 OR (-Pm4 + P2 > 0 OR (-Pback1 + Pm2 > 0 OR -Pback1 + P3 > 0))))
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 44 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 4 literals
lola: SUBRESULT
lola: result: no
lola: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-8.sara
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 9 will run for 505 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG ((Pm4 + -P2 <= 0 OR -Pout4 > -2))
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 44 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: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-9.sara
lola: lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 10 will run for 590 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF ((-Pout1 <= -1 AND (Pback2 + -Pout3 <= 0 AND (Pm3 + -Pout3 <= 0 AND -Pout3 + Pout2 > 0))))
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 44 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 4 literals
lola: SUBRESULT
lola: result: yes
lola: The predicate is reachable.
lola: ========================================
lola: subprocess 11 will run for 708 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF ((-Pback4 + Pback2 <= 0 AND (-Pback2 + P1 <= 0 AND (-Pout4 <= -1 OR -Pback4 <= -2))))
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 44 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: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-11.sara
lola: SUBRESULT
lola: result: yes
lola: lola: calling and running sara
The predicate is reachable.
lola: ========================================
lola: subprocess 12 will run for 885 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: AG (-P1 <= -1)
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 44 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: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-12.sara
lola: calling and running sara
lola: SUBRESULT
lola: result: no
lola: The predicate is not invariant.
lola: ========================================
lola: subprocess 13 will run for 1180 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: FALSE
lola: ========================================
lola: SUBTASK
lola: checking initial satisfaction
lola: processed formula with 0 atomic propositions
lola: closed formula file Kanban-PT-0020-ReachabilityCardinality.task
lola: RUNNING
lola: SUBRESULT
lola: result: no
lola: The net violates the given property already in its initial state.
lola: ========================================
lola: subprocess 14 will run for 1770 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: TRUE
lola: ========================================
lola: SUBTASK
lola: checking initial satisfaction
lola: processed formula with 0 atomic propositions
lola: closed formula file Kanban-PT-0020-ReachabilityCardinality.task
lola: RUNNING
lola: SUBRESULT
lola: result: yes
lola: The net satisfies the property already in its initial state.
lola: ========================================
lola: subprocess 15 will run for 3540 seconds at most (--localtimelimit=0)
lola: ========================================
lola: ...considering subproblem: EF ((-Pback3 > -2 AND (P3 + -Pout1 <= 0 AND -Pm2 + Pout4 <= 0)))
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 44 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: write sara problem file to Kanban-PT-0020-ReachabilityCardinality-15.sara
lola: The predicate is reachable.
lola: RESULT
lola: summary: yes no yes no no no no yes no no yes yes no no yes yes
lola: ========================================
sara: try reading problem file Kanban-PT-0020-ReachabilityCardinality-11.sara.
sara: place or transition ordering is non-deterministic


BK_STOP 1463594891478

--------------------
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="Kanban-PT-0020"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="lola"
export BK_RESULT_DIR="/home/hulinhub/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/Kanban-PT-0020.tgz
mv Kanban-PT-0020 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 Kanban-PT-0020, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r062kn-blw3-146358896800124"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.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 ;