About the Execution of TAPAAL(SEQ) for S_GlobalResAllocation-PT-03
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
163.040 | 151521.00 | 150899.00 | 320.30 | TFFFTFTTFFTFTTFF | normal |
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 2-2265
Executing tool classicSEQ
Input is S_GlobalResAllocation-PT-03, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 1
Run identifier is r156st-ebro-143319431300295
=====================================================================
--------------------
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 GlobalResAllocation-COL-03-ReachabilityCardinality-0
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-1
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-10
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-11
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-12
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-13
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-14
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-15
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-2
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-3
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-4
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-5
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-6
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-7
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-8
FORMULA_NAME GlobalResAllocation-COL-03-ReachabilityCardinality-9
=== Now, execution of the tool begins
BK_START 1433228059199
---> classicSEQ --- TAPAAL Classic Sequential
**********************************************
TAPAAL classicSEQ verifying ReachabilityCardinality
**********************************************
verifypn -n -r 1 -x 1 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-0: EF ( not(((1 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")) or not((("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6") <= ("pr_released_2" + "pr_released_3" + "pr_released_1"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-0 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
verifypn -n -r 1 -x 2 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-1: EF ( not((not((("pr_released_2" + "pr_released_3" + "pr_released_1") <= ("pr_in_2" + "pr_in_1" + "pr_in_3"))) or ((3 <= ("Processes_1" + "Processes_2" + "Processes_3")) or (1 <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-1 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 3 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-2: not EF not ( not(not(((1 <= ("Processes_1" + "Processes_2" + "Processes_3")) or (1 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-2 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 4 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-3: EF ( (not(((1 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")) or (2 <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6")))) and not((("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6") <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6")))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-3 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 5 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-4: not EF not ( not((not((("pr_in_2" + "pr_in_1" + "pr_in_3") <= ("pr_in_2" + "pr_in_1" + "pr_in_3"))) and (3 <= ("Processes_1" + "Processes_2" + "Processes_3")))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-4 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
verifypn -n -r 1 -x 6 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-5: EF ( not(((("pr_released_2" + "pr_released_3" + "pr_released_1") <= ("pr_released_2" + "pr_released_3" + "pr_released_1")) or (1 <= ("pr_in_2" + "pr_in_1" + "pr_in_3")))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-5 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 7 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-6: not EF not ( (("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6") <= ("pr_in_2" + "pr_in_1" + "pr_in_3")) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-6 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
verifypn -n -r 1 -x 8 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-7: not EF not ( not((not((("pr_in_2" + "pr_in_1" + "pr_in_3") <= ("pr_in_2" + "pr_in_1" + "pr_in_3"))) and ((("Processes_1" + "Processes_2" + "Processes_3") <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6")) and (1 <= ("pr_released_2" + "pr_released_3" + "pr_released_1"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-7 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
verifypn -n -r 1 -x 9 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-8: EF ( not((not((3 <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6"))) or (("Processes_1" + "Processes_2" + "Processes_3") <= ("Processes_1" + "Processes_2" + "Processes_3")))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-8 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 10 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-9: EF ( ((("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6") <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6")) and not(((1 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")) or (3 <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-9 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 11 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-10: EF ( (not(((3 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")) and (("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6") <= ("Processes_1" + "Processes_2" + "Processes_3")))) and (not((("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6") <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6"))) and (1 <= ("pr_in_2" + "pr_in_1" + "pr_in_3")))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-10 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 12 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-11: EF ( (not(((1 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")) and (1 <= ("Processes_1" + "Processes_2" + "Processes_3")))) and not(((1 <= ("pr_released_2" + "pr_released_3" + "pr_released_1")) and (("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6") <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-11 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 13 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-12: not EF not ( not(not(((("pr_released_2" + "pr_released_3" + "pr_released_1") <= ("pr_released_2" + "pr_released_3" + "pr_released_1")) or (3 <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-12 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
verifypn -n -r 1 -x 14 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-13: EF ( ((not((2 <= ("pr_released_2" + "pr_released_3" + "pr_released_1"))) and ((3 <= ("pr_released_2" + "pr_released_3" + "pr_released_1")) or (2 <= ("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6")))) and not(((("pr_in_2" + "pr_in_1" + "pr_in_3") <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")) or (2 <= ("Processes_1" + "Processes_2" + "Processes_3"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-13 FALSE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is NOT satisfied.
verifypn -n -r 1 -x 15 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-14: not EF not ( (((2 <= ("pr_in_2" + "pr_in_1" + "pr_in_3")) or not((("in_critical_s_1_1" + "in_critical_s_2_1" + "in_critical_s_3_1" + "in_critical_s_1_2" + "in_critical_s_3_2" + "in_critical_s_2_2" + "in_critical_s_2_3" + "in_critical_s_1_3" + "in_critical_s_1_4" + "in_critical_s_3_3" + "in_critical_s_3_4" + "in_critical_s_2_4" + "in_critical_s_2_5" + "in_critical_s_1_5" + "in_critical_s_1_6" + "in_critical_s_3_5" + "in_critical_s_3_6" + "in_critical_s_2_6") <= ("Resources_1" + "Resources_2" + "Resources_3" + "Resources_4" + "Resources_5" + "Resources_6")))) or not(((1 <= ("Processes_1" + "Processes_2" + "Processes_3")) and (3 <= ("pr_in_2" + "pr_in_1" + "pr_in_3"))))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-14 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
verifypn -n -r 1 -x 16 model.pnml ReachabilityCardinality.xml
GlobalResAllocation-COL-03-ReachabilityCardinality-15: EF ( not((not((2 <= ("pr_released_2" + "pr_released_3" + "pr_released_1"))) or (1 <= ("Processes_1" + "Processes_2" + "Processes_3")))) )
FORMULA GlobalResAllocation-COL-03-ReachabilityCardinality-15 TRUE TECHNIQUES SEQUENTIAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION
Query is satisfied.
BK_STOP 1433228210720
--------------------
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="S_GlobalResAllocation-PT-03"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="classicSEQ"
export BK_RESULT_DIR="/users/gast00/fkordon/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/S_GlobalResAllocation-PT-03.tgz
mv S_GlobalResAllocation-PT-03 execution
# this is for BenchKit: explicit launching of the test
cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-2265"
echo " Executing tool classicSEQ"
echo " Input is S_GlobalResAllocation-PT-03, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 1"
echo " Run identifier is r156st-ebro-143319431300295"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityCardinality" = "ReachabilityComputeBounds" ] ; 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 '
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 ;