Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2021-input.r045-oct2-162038291800305.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2021-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool itstools
Input is CloudDeployment-PT-4b, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r045-oct2-162038291800305
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 952K
-rw-r--r-- 1 mcc users 15K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 136K May 10 09:42 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.9K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 64K May 10 09:42 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Mar 28 15:52 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Mar 28 15:52 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Mar 28 15:52 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Mar 28 15:52 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Mar 23 03:08 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K Mar 23 03:08 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Mar 22 12:36 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 14K Mar 22 12:36 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 22 09:10 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 22 09:10 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 3 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 591K May 5 16:51 model.pnml

--------------------
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 CloudDeployment-PT-4b-CTLCardinality-00
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-01
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-02
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-03
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-04
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-05
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-06
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-07
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-08
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-09
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-10
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-11
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-12
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-13
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-14
FORMULA_NAME CloudDeployment-PT-4b-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1620806767531

Running Version 0
[2021-05-12 08:06:10] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2021-05-12 08:06:10] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-12 08:06:10] [INFO ] Load time of PNML (sax parser for PT used): 119 ms
[2021-05-12 08:06:10] [INFO ] Transformed 1182 places.
[2021-05-12 08:06:10] [INFO ] Transformed 1824 transitions.
[2021-05-12 08:06:10] [INFO ] Found NUPN structural information;
[2021-05-12 08:06:10] [INFO ] Parsed PT model containing 1182 places and 1824 transitions in 162 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 16 ms.
Support contains 665 out of 1182 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 1182/1182 places, 1824/1824 transitions.
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 1179 transition count 1824
Discarding 96 places :
Symmetric choice reduction at 1 with 96 rule applications. Total rules 99 place count 1083 transition count 1728
Iterating global reduction 1 with 96 rules applied. Total rules applied 195 place count 1083 transition count 1728
Discarding 9 places :
Symmetric choice reduction at 1 with 9 rule applications. Total rules 204 place count 1074 transition count 1719
Iterating global reduction 1 with 9 rules applied. Total rules applied 213 place count 1074 transition count 1719
Applied a total of 213 rules in 130 ms. Remains 1074 /1182 variables (removed 108) and now considering 1719/1824 (removed 105) transitions.
// Phase 1: matrix 1719 rows 1074 cols
[2021-05-12 08:06:11] [INFO ] Computed 14 place invariants in 61 ms
[2021-05-12 08:06:11] [INFO ] Implicit Places using invariants in 640 ms returned []
// Phase 1: matrix 1719 rows 1074 cols
[2021-05-12 08:06:11] [INFO ] Computed 14 place invariants in 29 ms
[2021-05-12 08:06:12] [INFO ] Implicit Places using invariants and state equation in 1033 ms returned []
Implicit Place search using SMT with State Equation took 1704 ms to find 0 implicit places.
// Phase 1: matrix 1719 rows 1074 cols
[2021-05-12 08:06:12] [INFO ] Computed 14 place invariants in 12 ms
[2021-05-12 08:06:13] [INFO ] Dead Transitions using invariants and state equation in 572 ms returned []
Finished structural reductions, in 1 iterations. Remains : 1074/1182 places, 1719/1824 transitions.
[2021-05-12 08:06:13] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2021-05-12 08:06:13] [INFO ] Flatten gal took : 226 ms
FORMULA CloudDeployment-PT-4b-CTLCardinality-15 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2021-05-12 08:06:14] [INFO ] Flatten gal took : 185 ms
[2021-05-12 08:06:14] [INFO ] Input system was already deterministic with 1719 transitions.
Incomplete random walk after 100000 steps, including 771 resets, run finished after 845 ms. (steps per millisecond=118 ) properties (out of 77) seen :29
Running SMT prover for 48 properties.
// Phase 1: matrix 1719 rows 1074 cols
[2021-05-12 08:06:15] [INFO ] Computed 14 place invariants in 9 ms
[2021-05-12 08:06:16] [INFO ] [Real]Absence check using 0 positive and 14 generalized place invariants in 7 ms returned sat
[2021-05-12 08:06:16] [INFO ] SMT Verify possible in real domain returnedunsat :0 sat :0 real:48
[2021-05-12 08:06:17] [INFO ] [Nat]Absence check using 0 positive and 14 generalized place invariants in 8 ms returned sat
[2021-05-12 08:06:18] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-12 08:06:19] [INFO ] [Nat]Absence check using state equation in 1271 ms returned unsat :44 sat :4
Attempting to minimize the solution found.
Minimization took 207 ms.
[2021-05-12 08:06:19] [INFO ] SMT Verify possible in nat domain returned unsat :44 sat :4
Successfully simplified 44 atomic propositions for a total of 15 simplifications.
[2021-05-12 08:06:19] [INFO ] Initial state test concluded for 2 properties.
FORMULA CloudDeployment-PT-4b-CTLCardinality-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudDeployment-PT-4b-CTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Graph (trivial) has 1077 edges and 1074 vertex of which 311 / 1074 are part of one of the 30 SCC in 9 ms
Free SCC test removed 281 places
Ensure Unique test removed 315 transitions
Reduce isomorphic transitions removed 315 transitions.
Graph (complete) has 2282 edges and 793 vertex of which 792 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.7 ms
Discarding 1 places :
Also discarding 0 output transitions
Ensure Unique test removed 1 places
Reduce places removed 2 places and 1 transitions.
Drop transitions removed 351 transitions
Trivial Post-agglo rules discarded 351 transitions
Performed 351 trivial Post agglomeration. Transition count delta: 351
Iterating post reduction 0 with 351 rules applied. Total rules applied 353 place count 790 transition count 1052
Reduce places removed 351 places and 0 transitions.
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Iterating post reduction 1 with 354 rules applied. Total rules applied 707 place count 439 transition count 1049
Reduce places removed 3 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 711 place count 436 transition count 1048
Performed 21 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 21 Pre rules applied. Total rules applied 711 place count 436 transition count 1027
Deduced a syphon composed of 21 places in 1 ms
Reduce places removed 21 places and 0 transitions.
Iterating global reduction 3 with 42 rules applied. Total rules applied 753 place count 415 transition count 1027
Discarding 127 places :
Symmetric choice reduction at 3 with 127 rule applications. Total rules 880 place count 288 transition count 653
Iterating global reduction 3 with 127 rules applied. Total rules applied 1007 place count 288 transition count 653
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 3 with 4 rules applied. Total rules applied 1011 place count 288 transition count 649
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 5 Pre rules applied. Total rules applied 1011 place count 288 transition count 644
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 4 with 10 rules applied. Total rules applied 1021 place count 283 transition count 644
Discarding 3 places :
Symmetric choice reduction at 4 with 3 rule applications. Total rules 1024 place count 280 transition count 641
Iterating global reduction 4 with 3 rules applied. Total rules applied 1027 place count 280 transition count 641
Performed 88 Post agglomeration using F-continuation condition with reduction of 2 identical transitions.
Deduced a syphon composed of 88 places in 1 ms
Reduce places removed 88 places and 0 transitions.
Iterating global reduction 4 with 176 rules applied. Total rules applied 1203 place count 192 transition count 551
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 4 with 5 rules applied. Total rules applied 1208 place count 192 transition count 546
Performed 25 Post agglomeration using F-continuation condition with reduction of 50 identical transitions.
Deduced a syphon composed of 25 places in 0 ms
Reduce places removed 25 places and 0 transitions.
Iterating global reduction 5 with 50 rules applied. Total rules applied 1258 place count 167 transition count 648
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 5 with 6 rules applied. Total rules applied 1264 place count 167 transition count 642
Drop transitions removed 73 transitions
Redundant transition composition rules discarded 73 transitions
Iterating global reduction 6 with 73 rules applied. Total rules applied 1337 place count 167 transition count 569
Partial Post-agglomeration rule applied 4 times.
Drop transitions removed 4 transitions
Iterating global reduction 6 with 4 rules applied. Total rules applied 1341 place count 167 transition count 569
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 6 with 1 rules applied. Total rules applied 1342 place count 166 transition count 568
Applied a total of 1342 rules in 397 ms. Remains 166 /1074 variables (removed 908) and now considering 568/1719 (removed 1151) transitions.
[2021-05-12 08:06:20] [INFO ] Flatten gal took : 33 ms
[2021-05-12 08:06:20] [INFO ] Flatten gal took : 35 ms
[2021-05-12 08:06:20] [INFO ] Input system was already deterministic with 568 transitions.
[2021-05-12 08:06:20] [INFO ] Flatten gal took : 29 ms
[2021-05-12 08:06:20] [INFO ] Flatten gal took : 28 ms
[2021-05-12 08:06:20] [INFO ] Time to serialize gal into /tmp/CTLCardinality8460418380671620581.gal : 9 ms
[2021-05-12 08:06:20] [INFO ] Time to serialize properties into /tmp/CTLCardinality14277103173907296820.ctl : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLCardinality8460418380671620581.gal, -t, CGAL, -ctl, /tmp/CTLCardinality14277103173907296820.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLCardinality8460418380671620581.gal -t CGAL -ctl /tmp/CTLCardinality14277103173907296820.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,8.28241e+12,2.85132,93936,2,18958,5,441390,6,0,1200,319377,0


Converting to forward existential form...Done !
original formula: AG(AF(((((p881+p1098)+p427)+p206)<=3)))
=> equivalent forward existential formula: [FwdG(FwdU(Init,TRUE),!(((((p881+p1098)+p427)+p206)<=3)))] = FALSE
Hit Full ! (commute/partial/dont) 556/0/12
(forward)formula 0,0,13.1639,346432,1,0,8,2.03253e+06,20,2,9159,859788,8
FORMULA CloudDeployment-PT-4b-CTLCardinality-05 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !

***************************************

Graph (trivial) has 1058 edges and 1074 vertex of which 303 / 1074 are part of one of the 29 SCC in 2 ms
Free SCC test removed 274 places
Ensure Unique test removed 308 transitions
Reduce isomorphic transitions removed 308 transitions.
Graph (complete) has 2289 edges and 800 vertex of which 799 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.3 ms
Discarding 1 places :
Also discarding 0 output transitions
Ensure Unique test removed 1 places
Reduce places removed 2 places and 1 transitions.
Drop transitions removed 342 transitions
Trivial Post-agglo rules discarded 342 transitions
Performed 342 trivial Post agglomeration. Transition count delta: 342
Iterating post reduction 0 with 342 rules applied. Total rules applied 344 place count 797 transition count 1068
Reduce places removed 342 places and 0 transitions.
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Iterating post reduction 1 with 354 rules applied. Total rules applied 698 place count 455 transition count 1056
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 2 with 12 rules applied. Total rules applied 710 place count 443 transition count 1056
Performed 22 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 22 Pre rules applied. Total rules applied 710 place count 443 transition count 1034
Deduced a syphon composed of 22 places in 1 ms
Reduce places removed 22 places and 0 transitions.
Iterating global reduction 3 with 44 rules applied. Total rules applied 754 place count 421 transition count 1034
Discarding 123 places :
Symmetric choice reduction at 3 with 123 rule applications. Total rules 877 place count 298 transition count 664
Iterating global reduction 3 with 123 rules applied. Total rules applied 1000 place count 298 transition count 664
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 1002 place count 298 transition count 662
Performed 4 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 4 Pre rules applied. Total rules applied 1002 place count 298 transition count 658
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 4 with 8 rules applied. Total rules applied 1010 place count 294 transition count 658
Discarding 3 places :
Symmetric choice reduction at 4 with 3 rule applications. Total rules 1013 place count 291 transition count 655
Iterating global reduction 4 with 3 rules applied. Total rules applied 1016 place count 291 transition count 655
Performed 87 Post agglomeration using F-continuation condition with reduction of 2 identical transitions.
Deduced a syphon composed of 87 places in 1 ms
Reduce places removed 87 places and 0 transitions.
Iterating global reduction 4 with 174 rules applied. Total rules applied 1190 place count 204 transition count 566
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 4 with 5 rules applied. Total rules applied 1195 place count 204 transition count 561
Performed 25 Post agglomeration using F-continuation condition with reduction of 44 identical transitions.
Deduced a syphon composed of 25 places in 0 ms
Reduce places removed 25 places and 0 transitions.
Iterating global reduction 5 with 50 rules applied. Total rules applied 1245 place count 179 transition count 665
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 5 with 6 rules applied. Total rules applied 1251 place count 179 transition count 659
Drop transitions removed 51 transitions
Redundant transition composition rules discarded 51 transitions
Iterating global reduction 6 with 51 rules applied. Total rules applied 1302 place count 179 transition count 608
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 6 with 1 rules applied. Total rules applied 1303 place count 178 transition count 607
Applied a total of 1303 rules in 199 ms. Remains 178 /1074 variables (removed 896) and now considering 607/1719 (removed 1112) transitions.
[2021-05-12 08:06:34] [INFO ] Flatten gal took : 41 ms
[2021-05-12 08:06:34] [INFO ] Flatten gal took : 36 ms
[2021-05-12 08:06:34] [INFO ] Input system was already deterministic with 607 transitions.
[2021-05-12 08:06:34] [INFO ] Flatten gal took : 31 ms
[2021-05-12 08:06:34] [INFO ] Flatten gal took : 27 ms
[2021-05-12 08:06:34] [INFO ] Time to serialize gal into /tmp/CTLCardinality2143385846196523592.gal : 4 ms
[2021-05-12 08:06:34] [INFO ] Time to serialize properties into /tmp/CTLCardinality7267689643027298766.ctl : 0 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLCardinality2143385846196523592.gal, -t, CGAL, -ctl, /tmp/CTLCardinality7267689643027298766.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLCardinality2143385846196523592.gal -t CGAL -ctl /tmp/CTLCardinality7267689643027298766.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Detected timeout of ITS tools.
[2021-05-12 08:07:04] [INFO ] Flatten gal took : 61 ms
[2021-05-12 08:07:04] [INFO ] Applying decomposition
[2021-05-12 08:07:04] [INFO ] Flatten gal took : 45 ms
Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202104292328/bin/convert-linux64, -i, /tmp/graph7484424855510317814.txt, -o, /tmp/graph7484424855510317814.bin, -w, /tmp/graph7484424855510317814.weights], workingDir=null]
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202104292328/bin/louvain-linux64, /tmp/graph7484424855510317814.bin, -l, -1, -v, -w, /tmp/graph7484424855510317814.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-12 08:07:04] [INFO ] Decomposing Gal with order
[2021-05-12 08:07:04] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-12 08:07:04] [INFO ] Removed a total of 968 redundant transitions.
[2021-05-12 08:07:04] [INFO ] Flatten gal took : 134 ms
[2021-05-12 08:07:04] [INFO ] Fuse similar labels procedure discarded/fused a total of 65 labels/synchronizations in 16 ms.
[2021-05-12 08:07:05] [INFO ] Time to serialize gal into /tmp/CTLCardinality3467527772676758892.gal : 7 ms
[2021-05-12 08:07:05] [INFO ] Time to serialize properties into /tmp/CTLCardinality10420442798417054227.ctl : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLCardinality3467527772676758892.gal, -t, CGAL, -ctl, /tmp/CTLCardinality10420442798417054227.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLCardinality3467527772676758892.gal -t CGAL -ctl /tmp/CTLCardinality10420442798417054227.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,1.86007e+13,2.53997,71436,2,8858,5,322009,6,0,1112,232543,0


Converting to forward existential form...Done !
original formula: AG((gu19.p966<=(gu19.p1065+gu19.p717)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !((gu19.p966<=(gu19.p1065+gu19.p717))))] = FALSE
(forward)formula 0,0,2.54137,71436,1,0,7,322009,9,2,1128,232543,1
FORMULA CloudDeployment-PT-4b-CTLCardinality-07 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

Graph (trivial) has 1026 edges and 1074 vertex of which 250 / 1074 are part of one of the 26 SCC in 2 ms
Free SCC test removed 224 places
Ensure Unique test removed 250 transitions
Reduce isomorphic transitions removed 250 transitions.
Graph (complete) has 2347 edges and 850 vertex of which 849 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.2 ms
Discarding 1 places :
Also discarding 0 output transitions
Ensure Unique test removed 1 places
Reduce places removed 2 places and 1 transitions.
Drop transitions removed 355 transitions
Trivial Post-agglo rules discarded 355 transitions
Performed 355 trivial Post agglomeration. Transition count delta: 355
Iterating post reduction 0 with 355 rules applied. Total rules applied 357 place count 847 transition count 1113
Reduce places removed 355 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 1 with 357 rules applied. Total rules applied 714 place count 492 transition count 1111
Reduce places removed 1 places and 0 transitions.
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Iterating post reduction 2 with 16 rules applied. Total rules applied 730 place count 491 transition count 1096
Reduce places removed 15 places and 0 transitions.
Iterating post reduction 3 with 15 rules applied. Total rules applied 745 place count 476 transition count 1096
Performed 24 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 24 Pre rules applied. Total rules applied 745 place count 476 transition count 1072
Deduced a syphon composed of 24 places in 1 ms
Reduce places removed 24 places and 0 transitions.
Iterating global reduction 4 with 48 rules applied. Total rules applied 793 place count 452 transition count 1072
Discarding 131 places :
Symmetric choice reduction at 4 with 131 rule applications. Total rules 924 place count 321 transition count 694
Iterating global reduction 4 with 131 rules applied. Total rules applied 1055 place count 321 transition count 694
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 4 with 3 rules applied. Total rules applied 1058 place count 321 transition count 691
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 1059 place count 320 transition count 691
Performed 6 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 6 with 6 Pre rules applied. Total rules applied 1059 place count 320 transition count 685
Deduced a syphon composed of 6 places in 1 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 6 with 12 rules applied. Total rules applied 1071 place count 314 transition count 685
Discarding 4 places :
Symmetric choice reduction at 6 with 4 rule applications. Total rules 1075 place count 310 transition count 681
Iterating global reduction 6 with 4 rules applied. Total rules applied 1079 place count 310 transition count 681
Performed 85 Post agglomeration using F-continuation condition with reduction of 4 identical transitions.
Deduced a syphon composed of 85 places in 0 ms
Reduce places removed 85 places and 0 transitions.
Iterating global reduction 6 with 170 rules applied. Total rules applied 1249 place count 225 transition count 592
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 6 with 6 rules applied. Total rules applied 1255 place count 225 transition count 586
Performed 27 Post agglomeration using F-continuation condition with reduction of 51 identical transitions.
Deduced a syphon composed of 27 places in 0 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 7 with 54 rules applied. Total rules applied 1309 place count 198 transition count 680
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 7 with 3 rules applied. Total rules applied 1312 place count 198 transition count 677
Drop transitions removed 34 transitions
Redundant transition composition rules discarded 34 transitions
Iterating global reduction 8 with 34 rules applied. Total rules applied 1346 place count 198 transition count 643
Partial Post-agglomeration rule applied 12 times.
Drop transitions removed 12 transitions
Iterating global reduction 8 with 12 rules applied. Total rules applied 1358 place count 198 transition count 643
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 8 with 1 rules applied. Total rules applied 1359 place count 197 transition count 642
Applied a total of 1359 rules in 122 ms. Remains 197 /1074 variables (removed 877) and now considering 642/1719 (removed 1077) transitions.
[2021-05-12 08:07:07] [INFO ] Flatten gal took : 37 ms
[2021-05-12 08:07:07] [INFO ] Flatten gal took : 28 ms
[2021-05-12 08:07:07] [INFO ] Input system was already deterministic with 642 transitions.
Finished random walk after 251 steps, including 8 resets, run visited all 1 properties in 3 ms. (steps per millisecond=83 )
FORMULA CloudDeployment-PT-4b-CTLCardinality-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Graph (trivial) has 980 edges and 1074 vertex of which 226 / 1074 are part of one of the 26 SCC in 0 ms
Free SCC test removed 200 places
Ensure Unique test removed 220 transitions
Reduce isomorphic transitions removed 220 transitions.
Graph (complete) has 2377 edges and 874 vertex of which 873 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.44 ms
Discarding 1 places :
Also discarding 0 output transitions
Ensure Unique test removed 1 places
Reduce places removed 2 places and 1 transitions.
Drop transitions removed 328 transitions
Trivial Post-agglo rules discarded 328 transitions
Performed 328 trivial Post agglomeration. Transition count delta: 328
Iterating post reduction 0 with 328 rules applied. Total rules applied 330 place count 871 transition count 1170
Reduce places removed 328 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 1 with 330 rules applied. Total rules applied 660 place count 543 transition count 1168
Reduce places removed 1 places and 0 transitions.
Performed 29 Post agglomeration using F-continuation condition.Transition count delta: 29
Iterating post reduction 2 with 30 rules applied. Total rules applied 690 place count 542 transition count 1139
Reduce places removed 29 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 30 rules applied. Total rules applied 720 place count 513 transition count 1138
Performed 27 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 27 Pre rules applied. Total rules applied 720 place count 513 transition count 1111
Deduced a syphon composed of 27 places in 0 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 4 with 54 rules applied. Total rules applied 774 place count 486 transition count 1111
Discarding 122 places :
Symmetric choice reduction at 4 with 122 rule applications. Total rules 896 place count 364 transition count 742
Iterating global reduction 4 with 122 rules applied. Total rules applied 1018 place count 364 transition count 742
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 4 with 1 rules applied. Total rules applied 1019 place count 364 transition count 741
Performed 7 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 7 Pre rules applied. Total rules applied 1019 place count 364 transition count 734
Deduced a syphon composed of 7 places in 0 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 5 with 14 rules applied. Total rules applied 1033 place count 357 transition count 734
Discarding 2 places :
Symmetric choice reduction at 5 with 2 rule applications. Total rules 1035 place count 355 transition count 732
Iterating global reduction 5 with 2 rules applied. Total rules applied 1037 place count 355 transition count 732
Performed 91 Post agglomeration using F-continuation condition with reduction of 2 identical transitions.
Deduced a syphon composed of 91 places in 4 ms
Reduce places removed 91 places and 0 transitions.
Iterating global reduction 5 with 182 rules applied. Total rules applied 1219 place count 264 transition count 639
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 5 with 6 rules applied. Total rules applied 1225 place count 264 transition count 633
Performed 25 Post agglomeration using F-continuation condition with reduction of 32 identical transitions.
Deduced a syphon composed of 25 places in 0 ms
Reduce places removed 25 places and 0 transitions.
Iterating global reduction 6 with 50 rules applied. Total rules applied 1275 place count 239 transition count 713
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 6 with 3 rules applied. Total rules applied 1278 place count 239 transition count 710
Drop transitions removed 19 transitions
Redundant transition composition rules discarded 19 transitions
Iterating global reduction 7 with 19 rules applied. Total rules applied 1297 place count 239 transition count 691
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 7 with 1 rules applied. Total rules applied 1298 place count 238 transition count 690
Applied a total of 1298 rules in 140 ms. Remains 238 /1074 variables (removed 836) and now considering 690/1719 (removed 1029) transitions.
[2021-05-12 08:07:08] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2021-05-12 08:07:08] [INFO ] Flatten gal took : 27 ms
FORMULA CloudDeployment-PT-4b-CTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2021-05-12 08:07:08] [INFO ] Flatten gal took : 27 ms
[2021-05-12 08:07:08] [INFO ] Input system was already deterministic with 690 transitions.
[2021-05-12 08:07:08] [INFO ] Initial state reduction rules for CTL removed 3 formulas.
[2021-05-12 08:07:08] [INFO ] Flatten gal took : 131 ms
[2021-05-12 08:07:08] [INFO ] Initial state reduction rules for CTL removed 2 formulas.
FORMULA CloudDeployment-PT-4b-CTLCardinality-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudDeployment-PT-4b-CTLCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudDeployment-PT-4b-CTLCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudDeployment-PT-4b-CTLCardinality-06 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudDeployment-PT-4b-CTLCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2021-05-12 08:07:08] [INFO ] Flatten gal took : 75 ms
[2021-05-12 08:07:08] [INFO ] Applying decomposition
[2021-05-12 08:07:08] [INFO ] Flatten gal took : 77 ms
Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202104292328/bin/convert-linux64, -i, /tmp/graph2261831961121583624.txt, -o, /tmp/graph2261831961121583624.bin, -w, /tmp/graph2261831961121583624.weights], workingDir=null]
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202104292328/bin/louvain-linux64, /tmp/graph2261831961121583624.bin, -l, -1, -v, -w, /tmp/graph2261831961121583624.weights, -q, 0, -e, 0.001], workingDir=null]
[2021-05-12 08:07:08] [INFO ] Decomposing Gal with order
[2021-05-12 08:07:08] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-12 08:07:09] [INFO ] Removed a total of 3376 redundant transitions.
[2021-05-12 08:07:09] [INFO ] Flatten gal took : 211 ms
[2021-05-12 08:07:09] [INFO ] Fuse similar labels procedure discarded/fused a total of 942 labels/synchronizations in 81 ms.
[2021-05-12 08:07:09] [INFO ] Time to serialize gal into /tmp/CTLCardinality8602000959848500285.gal : 11 ms
[2021-05-12 08:07:09] [INFO ] Time to serialize properties into /tmp/CTLCardinality18218376654776072070.ctl : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLCardinality8602000959848500285.gal, -t, CGAL, -ctl, /tmp/CTLCardinality18218376654776072070.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLCardinality8602000959848500285.gal -t CGAL -ctl /tmp/CTLCardinality18218376654776072070.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 4 CTL formulae.
Detected timeout of ITS tools.
[2021-05-12 08:27:36] [INFO ] Applying decomposition
[2021-05-12 08:27:37] [INFO ] Flatten gal took : 720 ms
[2021-05-12 08:27:37] [INFO ] Decomposing Gal with order
[2021-05-12 08:27:37] [INFO ] Rewriting arrays to variables to allow decomposition.
[2021-05-12 08:27:39] [INFO ] Removed a total of 4682 redundant transitions.
[2021-05-12 08:27:40] [INFO ] Flatten gal took : 1045 ms
[2021-05-12 08:27:40] [INFO ] Fuse similar labels procedure discarded/fused a total of 533 labels/synchronizations in 422 ms.
[2021-05-12 08:27:40] [INFO ] Time to serialize gal into /tmp/CTLCardinality16158280138579422323.gal : 33 ms
[2021-05-12 08:27:40] [INFO ] Time to serialize properties into /tmp/CTLCardinality7295651827831870866.ctl : 4 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLCardinality16158280138579422323.gal, -t, CGAL, -ctl, /tmp/CTLCardinality7295651827831870866.ctl, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLCardinality16158280138579422323.gal -t CGAL -ctl /tmp/CTLCardinality7295651827831870866.ctl --gen-order FOLLOW
No direction supplied, using forward translation only.
Parsed 4 CTL formulae.
Detected timeout of ITS tools.
[2021-05-12 08:48:01] [INFO ] Flatten gal took : 600 ms
[2021-05-12 08:48:02] [INFO ] Input system was already deterministic with 1719 transitions.
[2021-05-12 08:48:02] [INFO ] Transformed 1074 places.
[2021-05-12 08:48:02] [INFO ] Transformed 1719 transitions.
Running greatSPN : CommandLine [args=[/home/mcc/BenchKit/bin//..//greatspn//bin/pinvar, /home/mcc/execution/gspn], workingDir=/home/mcc/execution]
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Running greatSPN : CommandLine [args=[/home/mcc/BenchKit/bin//..//greatspn//bin/RGMEDD2, /home/mcc/execution/gspn, -META, -varord-only], workingDir=/home/mcc/execution]
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Using order generated by GreatSPN with heuristic : META
[2021-05-12 08:48:03] [INFO ] Time to serialize gal into /tmp/CTLCardinality2287659489291731598.gal : 10 ms
[2021-05-12 08:48:03] [INFO ] Time to serialize properties into /tmp/CTLCardinality18322955495499387120.ctl : 4 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/CTLCardinality2287659489291731598.gal, -t, CGAL, -ctl, /tmp/CTLCardinality18322955495499387120.ctl, --load-order, /home/mcc/execution/model.ord, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /tmp/CTLCardinality2287659489291731598.gal -t CGAL -ctl /tmp/CTLCardinality18322955495499387120.ctl --load-order /home/mcc/execution/model.ord --gen-order FOLLOW
Successfully loaded order from file /home/mcc/execution/model.ord
No direction supplied, using forward translation only.
Parsed 4 CTL formulae.

BK_TIME_CONFINEMENT_REACHED

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

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ CTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution CTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ cut -d . -f 9
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202104292328.jar
+ VERSION=0
+ echo 'Running Version 0'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination CTLCardinality -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m

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="CloudDeployment-PT-4b"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
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 2-4028"
echo " Executing tool itstools"
echo " Input is CloudDeployment-PT-4b, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r045-oct2-162038291800305"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudDeployment-PT-4b.tgz
mv CloudDeployment-PT-4b execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;