Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r009-oct2-167813597900465.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...........................
=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is AutoFlight-PT-12a, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r009-oct2-167813597900465
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 516K
-rw-r--r-- 1 mcc users 6.9K Feb 25 18:08 CTLCardinality.txt
-rw-r--r-- 1 mcc users 72K Feb 25 18:08 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.4K Feb 25 18:03 CTLFireability.txt
-rw-r--r-- 1 mcc users 62K Feb 25 18:03 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.6K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.3K Feb 25 15:32 LTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Feb 25 15:32 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 15:32 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 15:32 LTLFireability.xml
-rw-r--r-- 1 mcc users 7.9K Feb 25 18:18 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 77K Feb 25 18:18 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.9K Feb 25 18:12 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 91K Feb 25 18:12 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 15:32 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:32 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 85K Mar 5 18:22 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 AutoFlight-PT-12a-CTLCardinality-00
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-01
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-02
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-03
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-04
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-05
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-06
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-07
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-08
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-09
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-10
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-11
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-12
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-13
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-14
FORMULA_NAME AutoFlight-PT-12a-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1678630267330

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=AutoFlight-PT-12a
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-12 14:11:10] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-12 14:11:10] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 14:11:10] [INFO ] Load time of PNML (sax parser for PT used): 67 ms
[2023-03-12 14:11:10] [INFO ] Transformed 307 places.
[2023-03-12 14:11:10] [INFO ] Transformed 305 transitions.
[2023-03-12 14:11:10] [INFO ] Found NUPN structural information;
[2023-03-12 14:11:10] [INFO ] Parsed PT model containing 307 places and 305 transitions and 980 arcs in 176 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 10 ms.
Ensure Unique test removed 60 transitions
Reduce redundant transitions removed 60 transitions.
Support contains 116 out of 307 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 307/307 places, 245/245 transitions.
Applied a total of 0 rules in 53 ms. Remains 307 /307 variables (removed 0) and now considering 245/245 (removed 0) transitions.
// Phase 1: matrix 245 rows 307 cols
[2023-03-12 14:11:10] [INFO ] Computed 76 place invariants in 11 ms
[2023-03-12 14:11:11] [INFO ] Implicit Places using invariants in 612 ms returned [7, 14, 21, 35, 42, 56, 70, 84, 87, 90, 93, 96, 102, 108, 111, 114, 117, 182, 244, 250, 256, 262, 268, 274, 280, 292, 298, 304, 306]
Discarding 29 places :
Implicit Place search using SMT only with invariants took 657 ms to find 29 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 278/307 places, 245/245 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 274 transition count 241
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 274 transition count 241
Applied a total of 8 rules in 21 ms. Remains 274 /278 variables (removed 4) and now considering 241/245 (removed 4) transitions.
// Phase 1: matrix 241 rows 274 cols
[2023-03-12 14:11:11] [INFO ] Computed 47 place invariants in 4 ms
[2023-03-12 14:11:11] [INFO ] Implicit Places using invariants in 174 ms returned []
[2023-03-12 14:11:11] [INFO ] Invariant cache hit.
[2023-03-12 14:11:11] [INFO ] State equation strengthened by 19 read => feed constraints.
[2023-03-12 14:11:11] [INFO ] Implicit Places using invariants and state equation in 356 ms returned []
Implicit Place search using SMT with State Equation took 545 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 274/307 places, 241/245 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 1277 ms. Remains : 274/307 places, 241/245 transitions.
Support contains 116 out of 274 places after structural reductions.
[2023-03-12 14:11:12] [INFO ] Flatten gal took : 92 ms
[2023-03-12 14:11:12] [INFO ] Flatten gal took : 18 ms
[2023-03-12 14:11:12] [INFO ] Input system was already deterministic with 241 transitions.
Incomplete random walk after 10000 steps, including 190 resets, run finished after 524 ms. (steps per millisecond=19 ) properties (out of 74) seen :60
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 19 ms. (steps per millisecond=526 ) properties (out of 14) seen :1
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 51 ms. (steps per millisecond=196 ) properties (out of 13) seen :0
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 13) seen :1
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 10000 steps, including 3 resets, run finished after 85 ms. (steps per millisecond=117 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 10001 steps, including 12 resets, run finished after 34 ms. (steps per millisecond=294 ) properties (out of 12) seen :2
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 10 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 10) seen :1
Running SMT prover for 9 properties.
[2023-03-12 14:11:13] [INFO ] Invariant cache hit.
[2023-03-12 14:11:13] [INFO ] After 222ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:9
[2023-03-12 14:11:13] [INFO ] [Nat]Absence check using 47 positive place invariants in 16 ms returned sat
[2023-03-12 14:11:14] [INFO ] After 203ms SMT Verify possible using state equation in natural domain returned unsat :2 sat :7
[2023-03-12 14:11:14] [INFO ] State equation strengthened by 19 read => feed constraints.
[2023-03-12 14:11:14] [INFO ] After 180ms SMT Verify possible using 19 Read/Feed constraints in natural domain returned unsat :2 sat :7
[2023-03-12 14:11:14] [INFO ] Deduced a trap composed of 117 places in 337 ms of which 6 ms to minimize.
[2023-03-12 14:11:15] [INFO ] Deduced a trap composed of 119 places in 260 ms of which 6 ms to minimize.
[2023-03-12 14:11:15] [INFO ] Deduced a trap composed of 112 places in 90 ms of which 1 ms to minimize.
[2023-03-12 14:11:15] [INFO ] Deduced a trap composed of 111 places in 161 ms of which 17 ms to minimize.
[2023-03-12 14:11:15] [INFO ] Trap strengthening (SAT) tested/added 5/4 trap constraints in 999 ms
[2023-03-12 14:11:15] [INFO ] After 1527ms SMT Verify possible using trap constraints in natural domain returned unsat :2 sat :7
Attempting to minimize the solution found.
Minimization took 183 ms.
[2023-03-12 14:11:15] [INFO ] After 2184ms SMT Verify possible using all constraints in natural domain returned unsat :2 sat :7
Fused 9 Parikh solutions to 7 different solutions.
Parikh walk visited 4 properties in 47 ms.
Support contains 5 out of 274 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 274/274 places, 241/241 transitions.
Drop transitions removed 57 transitions
Trivial Post-agglo rules discarded 57 transitions
Performed 57 trivial Post agglomeration. Transition count delta: 57
Iterating post reduction 0 with 57 rules applied. Total rules applied 57 place count 274 transition count 184
Reduce places removed 57 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 58 rules applied. Total rules applied 115 place count 217 transition count 183
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 116 place count 216 transition count 183
Performed 27 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 27 Pre rules applied. Total rules applied 116 place count 216 transition count 156
Deduced a syphon composed of 27 places in 0 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 3 with 54 rules applied. Total rules applied 170 place count 189 transition count 156
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 174 place count 185 transition count 152
Iterating global reduction 3 with 4 rules applied. Total rules applied 178 place count 185 transition count 152
Performed 29 Post agglomeration using F-continuation condition.Transition count delta: 29
Deduced a syphon composed of 29 places in 1 ms
Reduce places removed 29 places and 0 transitions.
Iterating global reduction 3 with 58 rules applied. Total rules applied 236 place count 156 transition count 123
Free-agglomeration rule applied 35 times.
Iterating global reduction 3 with 35 rules applied. Total rules applied 271 place count 156 transition count 88
Reduce places removed 35 places and 0 transitions.
Iterating post reduction 3 with 35 rules applied. Total rules applied 306 place count 121 transition count 88
Free-agglomeration rule (complex) applied 3 times.
Iterating global reduction 4 with 3 rules applied. Total rules applied 309 place count 121 transition count 85
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 4 with 3 rules applied. Total rules applied 312 place count 118 transition count 85
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 5 with 1 rules applied. Total rules applied 313 place count 117 transition count 84
Reduce places removed 42 places and 0 transitions.
Graph (trivial) has 68 edges and 75 vertex of which 16 / 75 are part of one of the 1 SCC in 2 ms
Free SCC test removed 15 places
Drop transitions removed 44 transitions
Trivial Post-agglo rules discarded 44 transitions
Performed 44 trivial Post agglomeration. Transition count delta: 44
Iterating post reduction 5 with 87 rules applied. Total rules applied 400 place count 60 transition count 40
Reduce places removed 47 places and 0 transitions.
Drop transitions removed 24 transitions
Reduce isomorphic transitions removed 24 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 6 with 72 rules applied. Total rules applied 472 place count 13 transition count 15
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 7 with 1 rules applied. Total rules applied 473 place count 12 transition count 15
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 8 with 2 rules applied. Total rules applied 475 place count 11 transition count 14
Free-agglomeration rule applied 4 times.
Iterating global reduction 8 with 4 rules applied. Total rules applied 479 place count 11 transition count 10
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 8 with 4 rules applied. Total rules applied 483 place count 7 transition count 10
Applied a total of 483 rules in 43 ms. Remains 7 /274 variables (removed 267) and now considering 10/241 (removed 231) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 43 ms. Remains : 7/274 places, 10/241 transitions.
Finished random walk after 35 steps, including 0 resets, run visited all 3 properties in 1 ms. (steps per millisecond=35 )
Successfully simplified 2 atomic propositions for a total of 16 simplifications.
FORMULA AutoFlight-PT-12a-CTLCardinality-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-12 14:11:15] [INFO ] Flatten gal took : 13 ms
[2023-03-12 14:11:15] [INFO ] Flatten gal took : 12 ms
[2023-03-12 14:11:15] [INFO ] Input system was already deterministic with 241 transitions.
Computed a total of 8 stabilizing places and 1 stable transitions
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Drop transitions removed 57 transitions
Trivial Post-agglo rules discarded 57 transitions
Performed 57 trivial Post agglomeration. Transition count delta: 57
Iterating post reduction 0 with 57 rules applied. Total rules applied 57 place count 274 transition count 184
Reduce places removed 57 places and 0 transitions.
Iterating post reduction 1 with 57 rules applied. Total rules applied 114 place count 217 transition count 184
Performed 28 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 28 Pre rules applied. Total rules applied 114 place count 217 transition count 156
Deduced a syphon composed of 28 places in 0 ms
Reduce places removed 28 places and 0 transitions.
Iterating global reduction 2 with 56 rules applied. Total rules applied 170 place count 189 transition count 156
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 176 place count 183 transition count 150
Iterating global reduction 2 with 6 rules applied. Total rules applied 182 place count 183 transition count 150
Performed 28 Post agglomeration using F-continuation condition.Transition count delta: 28
Deduced a syphon composed of 28 places in 0 ms
Reduce places removed 28 places and 0 transitions.
Iterating global reduction 2 with 56 rules applied. Total rules applied 238 place count 155 transition count 122
Applied a total of 238 rules in 20 ms. Remains 155 /274 variables (removed 119) and now considering 122/241 (removed 119) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 21 ms. Remains : 155/274 places, 122/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 6 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 6 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 122 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 11 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 11 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 32 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 10 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Reduce places removed 1 places and 1 transitions.
Reduce places removed 7 places and 0 transitions.
Drop transitions removed 90 transitions
Trivial Post-agglo rules discarded 90 transitions
Performed 90 trivial Post agglomeration. Transition count delta: 90
Iterating post reduction 0 with 97 rules applied. Total rules applied 97 place count 266 transition count 150
Reduce places removed 90 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 91 rules applied. Total rules applied 188 place count 176 transition count 149
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 189 place count 175 transition count 149
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 13 Pre rules applied. Total rules applied 189 place count 175 transition count 136
Deduced a syphon composed of 13 places in 0 ms
Reduce places removed 25 places and 0 transitions.
Iterating global reduction 3 with 38 rules applied. Total rules applied 227 place count 150 transition count 136
Drop transitions removed 12 transitions
Trivial Post-agglo rules discarded 12 transitions
Performed 12 trivial Post agglomeration. Transition count delta: 12
Iterating post reduction 3 with 12 rules applied. Total rules applied 239 place count 150 transition count 124
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 4 with 12 rules applied. Total rules applied 251 place count 138 transition count 124
Discarding 6 places :
Symmetric choice reduction at 5 with 6 rule applications. Total rules 257 place count 132 transition count 118
Iterating global reduction 5 with 6 rules applied. Total rules applied 263 place count 132 transition count 118
Performed 28 Post agglomeration using F-continuation condition.Transition count delta: 28
Deduced a syphon composed of 28 places in 1 ms
Reduce places removed 28 places and 0 transitions.
Iterating global reduction 5 with 56 rules applied. Total rules applied 319 place count 104 transition count 90
Applied a total of 319 rules in 17 ms. Remains 104 /274 variables (removed 170) and now considering 90/241 (removed 151) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 18 ms. Remains : 104/274 places, 90/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 4 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 4 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 90 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 7 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 270 transition count 237
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 270 transition count 237
Applied a total of 8 rules in 8 ms. Remains 270 /274 variables (removed 4) and now considering 237/241 (removed 4) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 20 ms. Remains : 270/274 places, 237/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 237 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Drop transitions removed 58 transitions
Trivial Post-agglo rules discarded 58 transitions
Performed 58 trivial Post agglomeration. Transition count delta: 58
Iterating post reduction 0 with 58 rules applied. Total rules applied 58 place count 274 transition count 183
Reduce places removed 58 places and 0 transitions.
Iterating post reduction 1 with 58 rules applied. Total rules applied 116 place count 216 transition count 183
Performed 25 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 25 Pre rules applied. Total rules applied 116 place count 216 transition count 158
Deduced a syphon composed of 25 places in 0 ms
Reduce places removed 25 places and 0 transitions.
Iterating global reduction 2 with 50 rules applied. Total rules applied 166 place count 191 transition count 158
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 172 place count 185 transition count 152
Iterating global reduction 2 with 6 rules applied. Total rules applied 178 place count 185 transition count 152
Performed 27 Post agglomeration using F-continuation condition.Transition count delta: 27
Deduced a syphon composed of 27 places in 0 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 2 with 54 rules applied. Total rules applied 232 place count 158 transition count 125
Applied a total of 232 rules in 16 ms. Remains 158 /274 variables (removed 116) and now considering 125/241 (removed 116) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 16 ms. Remains : 158/274 places, 125/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 5 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 5 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 125 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 7 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Reduce places removed 1 places and 1 transitions.
Reduce places removed 7 places and 0 transitions.
Drop transitions removed 89 transitions
Trivial Post-agglo rules discarded 89 transitions
Performed 89 trivial Post agglomeration. Transition count delta: 89
Iterating post reduction 0 with 96 rules applied. Total rules applied 96 place count 266 transition count 151
Reduce places removed 89 places and 0 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 91 rules applied. Total rules applied 187 place count 177 transition count 149
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 189 place count 175 transition count 149
Performed 14 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 14 Pre rules applied. Total rules applied 189 place count 175 transition count 135
Deduced a syphon composed of 14 places in 0 ms
Reduce places removed 26 places and 0 transitions.
Iterating global reduction 3 with 40 rules applied. Total rules applied 229 place count 149 transition count 135
Drop transitions removed 12 transitions
Trivial Post-agglo rules discarded 12 transitions
Performed 12 trivial Post agglomeration. Transition count delta: 12
Iterating post reduction 3 with 12 rules applied. Total rules applied 241 place count 149 transition count 123
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 4 with 12 rules applied. Total rules applied 253 place count 137 transition count 123
Discarding 6 places :
Symmetric choice reduction at 5 with 6 rule applications. Total rules 259 place count 131 transition count 117
Iterating global reduction 5 with 6 rules applied. Total rules applied 265 place count 131 transition count 117
Performed 27 Post agglomeration using F-continuation condition.Transition count delta: 27
Deduced a syphon composed of 27 places in 0 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 5 with 54 rules applied. Total rules applied 319 place count 104 transition count 90
Applied a total of 319 rules in 15 ms. Remains 104 /274 variables (removed 170) and now considering 90/241 (removed 151) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 15 ms. Remains : 104/274 places, 90/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 3 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 4 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 90 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 7 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 8 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 8 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 8 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 8 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 9 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 8 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Reduce places removed 1 places and 1 transitions.
Reduce places removed 7 places and 0 transitions.
Drop transitions removed 86 transitions
Trivial Post-agglo rules discarded 86 transitions
Performed 86 trivial Post agglomeration. Transition count delta: 86
Iterating post reduction 0 with 93 rules applied. Total rules applied 93 place count 266 transition count 154
Reduce places removed 86 places and 0 transitions.
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Iterating post reduction 1 with 89 rules applied. Total rules applied 182 place count 180 transition count 151
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 2 with 3 rules applied. Total rules applied 185 place count 177 transition count 151
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 13 Pre rules applied. Total rules applied 185 place count 177 transition count 138
Deduced a syphon composed of 13 places in 1 ms
Reduce places removed 25 places and 0 transitions.
Iterating global reduction 3 with 38 rules applied. Total rules applied 223 place count 152 transition count 138
Drop transitions removed 12 transitions
Trivial Post-agglo rules discarded 12 transitions
Performed 12 trivial Post agglomeration. Transition count delta: 12
Iterating post reduction 3 with 12 rules applied. Total rules applied 235 place count 152 transition count 126
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 4 with 12 rules applied. Total rules applied 247 place count 140 transition count 126
Discarding 6 places :
Symmetric choice reduction at 5 with 6 rule applications. Total rules 253 place count 134 transition count 120
Iterating global reduction 5 with 6 rules applied. Total rules applied 259 place count 134 transition count 120
Performed 27 Post agglomeration using F-continuation condition.Transition count delta: 27
Deduced a syphon composed of 27 places in 0 ms
Reduce places removed 27 places and 0 transitions.
Iterating global reduction 5 with 54 rules applied. Total rules applied 313 place count 107 transition count 93
Applied a total of 313 rules in 14 ms. Remains 107 /274 variables (removed 167) and now considering 93/241 (removed 148) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 14 ms. Remains : 107/274 places, 93/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 3 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 3 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 93 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 270 transition count 237
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 270 transition count 237
Applied a total of 8 rules in 7 ms. Remains 270 /274 variables (removed 4) and now considering 237/241 (removed 4) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 270/274 places, 237/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 8 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 237 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 269 transition count 236
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 269 transition count 236
Applied a total of 10 rules in 6 ms. Remains 269 /274 variables (removed 5) and now considering 236/241 (removed 5) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6 ms. Remains : 269/274 places, 236/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 236 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 7 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 8 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 241/241 transitions.
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 268 transition count 235
Iterating global reduction 0 with 6 rules applied. Total rules applied 12 place count 268 transition count 235
Applied a total of 12 rules in 6 ms. Remains 268 /274 variables (removed 6) and now considering 235/241 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6 ms. Remains : 268/274 places, 235/241 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 8 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Input system was already deterministic with 235 transitions.
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Flatten gal took : 7 ms
[2023-03-12 14:11:16] [INFO ] Export to MCC of 15 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 3 ms.
[2023-03-12 14:11:16] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 274 places, 241 transitions and 692 arcs took 1 ms.
Total runtime 6351 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --ctl=/tmp/491/ctl_0_ --ctl=/tmp/491/ctl_1_ --ctl=/tmp/491/ctl_2_ --ctl=/tmp/491/ctl_3_ --ctl=/tmp/491/ctl_4_ --ctl=/tmp/491/ctl_5_ --ctl=/tmp/491/ctl_6_ --ctl=/tmp/491/ctl_7_ --ctl=/tmp/491/ctl_8_ --ctl=/tmp/491/ctl_9_ --ctl=/tmp/491/ctl_10_ --ctl=/tmp/491/ctl_11_ --ctl=/tmp/491/ctl_12_ --ctl=/tmp/491/ctl_13_ --ctl=/tmp/491/ctl_14_ --mu-par --mu-opt
TIME LIMIT: Killed by timeout after 3570 seconds
MemTotal: 16393220 kB
MemFree: 16014156 kB
After kill :
MemTotal: 16393220 kB
MemFree: 16096632 kB
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-00
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-01
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-02
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-03
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-04
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-05
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-06
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-07
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-09
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-10
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-11
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-12
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-13
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-14
Could not compute solution for formula : AutoFlight-PT-12a-CTLCardinality-15

BK_STOP 1678633848550

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -timeout 360 -rebuildPNML
mcc2023
ctl formula name AutoFlight-PT-12a-CTLCardinality-00
ctl formula formula --ctl=/tmp/491/ctl_0_
ctl formula name AutoFlight-PT-12a-CTLCardinality-01
ctl formula formula --ctl=/tmp/491/ctl_1_
ctl formula name AutoFlight-PT-12a-CTLCardinality-02
ctl formula formula --ctl=/tmp/491/ctl_2_
ctl formula name AutoFlight-PT-12a-CTLCardinality-03
ctl formula formula --ctl=/tmp/491/ctl_3_
ctl formula name AutoFlight-PT-12a-CTLCardinality-04
ctl formula formula --ctl=/tmp/491/ctl_4_
ctl formula name AutoFlight-PT-12a-CTLCardinality-05
ctl formula formula --ctl=/tmp/491/ctl_5_
ctl formula name AutoFlight-PT-12a-CTLCardinality-06
ctl formula formula --ctl=/tmp/491/ctl_6_
ctl formula name AutoFlight-PT-12a-CTLCardinality-07
ctl formula formula --ctl=/tmp/491/ctl_7_
ctl formula name AutoFlight-PT-12a-CTLCardinality-09
ctl formula formula --ctl=/tmp/491/ctl_8_
ctl formula name AutoFlight-PT-12a-CTLCardinality-10
ctl formula formula --ctl=/tmp/491/ctl_9_
ctl formula name AutoFlight-PT-12a-CTLCardinality-11
ctl formula formula --ctl=/tmp/491/ctl_10_
ctl formula name AutoFlight-PT-12a-CTLCardinality-12
ctl formula formula --ctl=/tmp/491/ctl_11_
ctl formula name AutoFlight-PT-12a-CTLCardinality-13
ctl formula formula --ctl=/tmp/491/ctl_12_
ctl formula name AutoFlight-PT-12a-CTLCardinality-14
ctl formula formula --ctl=/tmp/491/ctl_13_
ctl formula name AutoFlight-PT-12a-CTLCardinality-15
ctl formula formula --ctl=/tmp/491/ctl_14_
pnml2lts-sym: Exploration order is bfs-prev
pnml2lts-sym: Saturation strategy is sat
pnml2lts-sym: Guided search strategy is unguided
pnml2lts-sym: Attractor strategy is default
pnml2lts-sym: opening model.pnml
pnml2lts-sym: Edge label is id
Warning: program compiled against libxml 210 using older 209
pnml2lts-sym: Petri net has 274 places, 241 transitions and 692 arcs
pnml2lts-sym: Petri net Petri analyzed
pnml2lts-sym: There are no safe places
pnml2lts-sym: Loading Petri net took 0.010 real 0.000 user 0.000 sys
pnml2lts-sym: Initializing regrouping layer
pnml2lts-sym: Regroup specification: bs,w2W,ru,hf
pnml2lts-sym: Regroup Boost's Sloan
pnml2lts-sym: Regroup over-approximate must-write to may-write
pnml2lts-sym: Regroup Row sUbsume
pnml2lts-sym: Reqroup Horizontal Flip
pnml2lts-sym: Regrouping: 241->181 groups
pnml2lts-sym: Regrouping took 0.050 real 0.050 user 0.000 sys
pnml2lts-sym: state vector length is 274; there are 181 groups
pnml2lts-sym: Creating a multi-core ListDD domain.
pnml2lts-sym: Sylvan allocates 15.000 GB virtual memory for nodes table and operation cache.
pnml2lts-sym: Initial nodes table and operation cache requires 60.00 MB.
pnml2lts-sym: Using GBgetTransitionsShortR2W as next-state function
pnml2lts-sym: got initial state
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
Killing (15) : 497
Killing (9) : 497

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="AutoFlight-PT-12a"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="ltsminxred"
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 2-5348"
echo " Executing tool ltsminxred"
echo " Input is AutoFlight-PT-12a, 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 r009-oct2-167813597900465"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AutoFlight-PT-12a.tgz
mv AutoFlight-PT-12a 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 ;