Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r484-smll-171624275100002.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
......................
=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is DLCflexbar-PT-2a, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r484-smll-171624275100002
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.1M
-rw-r--r-- 1 mcc users 7.8K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 91K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K May 18 16:42 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.5K Apr 22 14:37 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Apr 22 14:37 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Apr 22 14:37 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 22 14:37 LTLFireability.xml
-rw-r--r-- 1 mcc users 14K Apr 12 19:43 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 158K Apr 12 19:43 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K Apr 12 18:05 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 76K Apr 12 18:05 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 22 14:37 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 22 14:37 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 3 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 545K May 18 16:42 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 DLCflexbar-PT-2a-CTLFireability-2024-00
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-01
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-02
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-03
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-04
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-05
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-06
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-07
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-08
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-09
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-10
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2024-11
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2023-12
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2023-13
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2023-14
FORMULA_NAME DLCflexbar-PT-2a-CTLFireability-2023-15

=== Now, execution of the tool begins

BK_START 1717192915443

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=CTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DLCflexbar-PT-2a
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-05-31 22:01:57] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLFireability, -timeout, 360, -rebuildPNML]
[2024-05-31 22:01:57] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-31 22:01:58] [INFO ] Load time of PNML (sax parser for PT used): 437 ms
[2024-05-31 22:01:58] [INFO ] Transformed 353 places.
[2024-05-31 22:01:58] [INFO ] Transformed 2169 transitions.
[2024-05-31 22:01:58] [INFO ] Found NUPN structural information;
[2024-05-31 22:01:58] [INFO ] Parsed PT model containing 353 places and 2169 transitions and 8205 arcs in 692 ms.
Parsed 16 properties from file /home/mcc/execution/CTLFireability.xml in 30 ms.
Ensure Unique test removed 264 transitions
Reduce redundant transitions removed 264 transitions.
Support contains 156 out of 353 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 353/353 places, 1905/1905 transitions.
Discarding 18 places :
Symmetric choice reduction at 0 with 18 rule applications. Total rules 18 place count 335 transition count 1815
Iterating global reduction 0 with 18 rules applied. Total rules applied 36 place count 335 transition count 1815
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 0 with 7 rules applied. Total rules applied 43 place count 335 transition count 1808
Drop transitions (Redundant composition of simpler transitions.) removed 620 transitions
Redundant transition composition rules discarded 620 transitions
Iterating global reduction 1 with 620 rules applied. Total rules applied 663 place count 335 transition count 1188
Applied a total of 663 rules in 222 ms. Remains 335 /353 variables (removed 18) and now considering 1188/1905 (removed 717) transitions.
[2024-05-31 22:01:58] [INFO ] Flow matrix only has 241 transitions (discarded 947 similar events)
// Phase 1: matrix 241 rows 335 cols
[2024-05-31 22:01:58] [INFO ] Computed 196 invariants in 48 ms
[2024-05-31 22:02:00] [INFO ] Implicit Places using invariants in 1365 ms returned [165, 166, 168, 174, 177, 179, 181, 182, 184, 185, 187, 188, 189, 190, 194, 195, 196, 197, 199, 200, 202, 205, 206, 207, 209, 214, 215, 217, 219, 220, 222, 224, 226, 227, 231, 233, 235, 238, 239, 241, 243, 244, 249, 250, 251, 252, 253, 255, 257, 258, 259, 264, 265, 267, 268, 271, 272, 275, 279, 282, 283, 285, 286, 287, 288, 290, 291, 292, 295, 296, 297, 298, 301, 302, 303, 305, 306, 307, 310, 313, 314, 315, 317, 319, 321, 322, 327, 331]
Discarding 88 places :
Ensure Unique test removed 355 transitions
Reduce isomorphic transitions removed 355 transitions.
Implicit Place search using SMT only with invariants took 1434 ms to find 88 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 247/353 places, 833/1905 transitions.
Drop transitions (Redundant composition of simpler transitions.) removed 507 transitions
Redundant transition composition rules discarded 507 transitions
Iterating global reduction 0 with 507 rules applied. Total rules applied 507 place count 247 transition count 326
Applied a total of 507 rules in 30 ms. Remains 247 /247 variables (removed 0) and now considering 326/833 (removed 507) transitions.
[2024-05-31 22:02:00] [INFO ] Flow matrix only has 241 transitions (discarded 85 similar events)
// Phase 1: matrix 241 rows 247 cols
[2024-05-31 22:02:00] [INFO ] Computed 108 invariants in 4 ms
[2024-05-31 22:02:00] [INFO ] Implicit Places using invariants in 168 ms returned []
[2024-05-31 22:02:00] [INFO ] Flow matrix only has 241 transitions (discarded 85 similar events)
[2024-05-31 22:02:00] [INFO ] Invariant cache hit.
[2024-05-31 22:02:00] [INFO ] State equation strengthened by 1 read => feed constraints.
[2024-05-31 22:02:00] [INFO ] Implicit Places using invariants and state equation in 306 ms returned []
Implicit Place search using SMT with State Equation took 478 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 247/353 places, 326/1905 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 2200 ms. Remains : 247/353 places, 326/1905 transitions.
Support contains 156 out of 247 places after structural reductions.
[2024-05-31 22:02:01] [INFO ] Flatten gal took : 104 ms
[2024-05-31 22:02:01] [INFO ] Flatten gal took : 45 ms
[2024-05-31 22:02:01] [INFO ] Input system was already deterministic with 326 transitions.
RANDOM walk for 34772 steps (7 resets) in 2475 ms. (14 steps per ms) remains 0/77 properties
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 22 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 24 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 326 transitions.
Computed a total of 85 stabilizing places and 1 stable transitions
Graph (complete) has 433 edges and 247 vertex of which 163 are kept as prefixes of interest. Removing 84 places using SCC suffix rule.5 ms
Starting structural reductions in SI_CTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Graph (trivial) has 319 edges and 247 vertex of which 158 / 247 are part of one of the 24 SCC in 4 ms
Free SCC test removed 134 places
Ensure Unique test removed 292 transitions
Reduce isomorphic transitions removed 292 transitions.
Graph (complete) has 141 edges and 113 vertex of which 31 are kept as prefixes of interest. Removing 82 places using SCC suffix rule.1 ms
Discarding 82 places :
Also discarding 0 output transitions
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 31 transition count 33
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 30 transition count 33
Discarding 21 places :
Symmetric choice reduction at 2 with 21 rule applications. Total rules 25 place count 9 transition count 12
Iterating global reduction 2 with 21 rules applied. Total rules applied 46 place count 9 transition count 12
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 2 with 1 rules applied. Total rules applied 47 place count 9 transition count 11
Applied a total of 47 rules in 34 ms. Remains 9 /247 variables (removed 238) and now considering 11/326 (removed 315) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 34 ms. Remains : 9/247 places, 11/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 2 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 1 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 11 transitions.
RANDOM walk for 31 steps (0 resets) in 4 ms. (6 steps per ms) remains 0/1 properties
FORMULA DLCflexbar-PT-2a-CTLFireability-2024-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 61 places and 0 transitions.
Iterating post reduction 0 with 61 rules applied. Total rules applied 61 place count 186 transition count 326
Discarding 21 places :
Symmetric choice reduction at 1 with 21 rule applications. Total rules 82 place count 165 transition count 284
Iterating global reduction 1 with 21 rules applied. Total rules applied 103 place count 165 transition count 284
Ensure Unique test removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 1 with 10 rules applied. Total rules applied 113 place count 165 transition count 274
Applied a total of 113 rules in 9 ms. Remains 165 /247 variables (removed 82) and now considering 274/326 (removed 52) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 165/247 places, 274/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 21 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 22 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 274 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 81 places and 0 transitions.
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 166 transition count 326
Discarding 30 places :
Symmetric choice reduction at 1 with 30 rule applications. Total rules 111 place count 136 transition count 266
Iterating global reduction 1 with 30 rules applied. Total rules applied 141 place count 136 transition count 266
Ensure Unique test removed 13 transitions
Reduce isomorphic transitions removed 13 transitions.
Iterating post reduction 1 with 13 rules applied. Total rules applied 154 place count 136 transition count 253
Applied a total of 154 rules in 10 ms. Remains 136 /247 variables (removed 111) and now considering 253/326 (removed 73) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 136/247 places, 253/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 18 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 18 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 253 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 81 places and 0 transitions.
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 166 transition count 326
Discarding 27 places :
Symmetric choice reduction at 1 with 27 rule applications. Total rules 108 place count 139 transition count 272
Iterating global reduction 1 with 27 rules applied. Total rules applied 135 place count 139 transition count 272
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 1 with 12 rules applied. Total rules applied 147 place count 139 transition count 260
Applied a total of 147 rules in 9 ms. Remains 139 /247 variables (removed 108) and now considering 260/326 (removed 66) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 11 ms. Remains : 139/247 places, 260/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 16 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 17 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 260 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Graph (trivial) has 278 edges and 247 vertex of which 132 / 247 are part of one of the 24 SCC in 2 ms
Free SCC test removed 108 places
Ensure Unique test removed 228 transitions
Reduce isomorphic transitions removed 228 transitions.
Graph (complete) has 205 edges and 139 vertex of which 65 are kept as prefixes of interest. Removing 74 places using SCC suffix rule.2 ms
Discarding 74 places :
Also discarding 0 output transitions
Drop transitions (Trivial Post-Agglo cleanup.) removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 4 place count 65 transition count 96
Reduce places removed 2 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 3 rules applied. Total rules applied 7 place count 63 transition count 95
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 8 place count 62 transition count 95
Discarding 17 places :
Symmetric choice reduction at 3 with 17 rule applications. Total rules 25 place count 45 transition count 76
Iterating global reduction 3 with 17 rules applied. Total rules applied 42 place count 45 transition count 76
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 3 with 2 rules applied. Total rules applied 44 place count 45 transition count 74
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 46 place count 44 transition count 73
Drop transitions (Redundant composition of simpler transitions.) removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 5 with 3 rules applied. Total rules applied 49 place count 44 transition count 70
Partial Post-agglomeration rule applied 1 times.
Drop transitions (Partial Post agglomeration) removed 1 transitions
Iterating global reduction 5 with 1 rules applied. Total rules applied 50 place count 44 transition count 70
Discarding 1 places :
Symmetric choice reduction at 5 with 1 rule applications. Total rules 51 place count 43 transition count 69
Iterating global reduction 5 with 1 rules applied. Total rules applied 52 place count 43 transition count 69
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 53 place count 43 transition count 68
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 6 with 1 rules applied. Total rules applied 54 place count 43 transition count 67
Applied a total of 54 rules in 31 ms. Remains 43 /247 variables (removed 204) and now considering 67/326 (removed 259) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 31 ms. Remains : 43/247 places, 67/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 4 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 5 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 67 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Graph (trivial) has 308 edges and 247 vertex of which 152 / 247 are part of one of the 23 SCC in 2 ms
Free SCC test removed 129 places
Ensure Unique test removed 279 transitions
Reduce isomorphic transitions removed 279 transitions.
Graph (complete) has 154 edges and 118 vertex of which 36 are kept as prefixes of interest. Removing 82 places using SCC suffix rule.1 ms
Discarding 82 places :
Also discarding 0 output transitions
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 36 transition count 46
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 35 transition count 46
Discarding 21 places :
Symmetric choice reduction at 2 with 21 rule applications. Total rules 25 place count 14 transition count 23
Iterating global reduction 2 with 21 rules applied. Total rules applied 46 place count 14 transition count 23
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 2 with 2 rules applied. Total rules applied 48 place count 14 transition count 21
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 50 place count 13 transition count 20
Applied a total of 50 rules in 9 ms. Remains 13 /247 variables (removed 234) and now considering 20/326 (removed 306) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 9 ms. Remains : 13/247 places, 20/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 2 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 1 ms
[2024-05-31 22:02:02] [INFO ] Input system was already deterministic with 20 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 76 places and 0 transitions.
Iterating post reduction 0 with 76 rules applied. Total rules applied 76 place count 171 transition count 326
Discarding 26 places :
Symmetric choice reduction at 1 with 26 rule applications. Total rules 102 place count 145 transition count 274
Iterating global reduction 1 with 26 rules applied. Total rules applied 128 place count 145 transition count 274
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 1 with 12 rules applied. Total rules applied 140 place count 145 transition count 262
Applied a total of 140 rules in 8 ms. Remains 145 /247 variables (removed 102) and now considering 262/326 (removed 64) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 8 ms. Remains : 145/247 places, 262/326 transitions.
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 15 ms
[2024-05-31 22:02:02] [INFO ] Flatten gal took : 15 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 262 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Graph (trivial) has 300 edges and 247 vertex of which 141 / 247 are part of one of the 22 SCC in 1 ms
Free SCC test removed 119 places
Ensure Unique test removed 258 transitions
Reduce isomorphic transitions removed 258 transitions.
Graph (complete) has 175 edges and 128 vertex of which 47 are kept as prefixes of interest. Removing 81 places using SCC suffix rule.0 ms
Discarding 81 places :
Also discarding 0 output transitions
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 47 transition count 67
Reduce places removed 1 places and 0 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 3 rules applied. Total rules applied 6 place count 46 transition count 65
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 8 place count 44 transition count 65
Discarding 24 places :
Symmetric choice reduction at 3 with 24 rule applications. Total rules 32 place count 20 transition count 37
Iterating global reduction 3 with 24 rules applied. Total rules applied 56 place count 20 transition count 37
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 3 with 4 rules applied. Total rules applied 60 place count 20 transition count 33
Reduce places removed 2 places and 0 transitions.
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 4 with 4 rules applied. Total rules applied 64 place count 18 transition count 31
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 5 with 1 rules applied. Total rules applied 65 place count 18 transition count 30
Partial Post-agglomeration rule applied 1 times.
Drop transitions (Partial Post agglomeration) removed 1 transitions
Iterating global reduction 5 with 1 rules applied. Total rules applied 66 place count 18 transition count 30
Discarding 1 places :
Symmetric choice reduction at 5 with 1 rule applications. Total rules 67 place count 17 transition count 29
Iterating global reduction 5 with 1 rules applied. Total rules applied 68 place count 17 transition count 29
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 69 place count 17 transition count 28
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 6 with 1 rules applied. Total rules applied 70 place count 17 transition count 27
Applied a total of 70 rules in 20 ms. Remains 17 /247 variables (removed 230) and now considering 27/326 (removed 299) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 20 ms. Remains : 17/247 places, 27/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 2 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 2 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 27 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 73 places and 0 transitions.
Iterating post reduction 0 with 73 rules applied. Total rules applied 73 place count 174 transition count 326
Discarding 27 places :
Symmetric choice reduction at 1 with 27 rule applications. Total rules 100 place count 147 transition count 272
Iterating global reduction 1 with 27 rules applied. Total rules applied 127 place count 147 transition count 272
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 1 with 12 rules applied. Total rules applied 139 place count 147 transition count 260
Applied a total of 139 rules in 7 ms. Remains 147 /247 variables (removed 100) and now considering 260/326 (removed 66) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 8 ms. Remains : 147/247 places, 260/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 10 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 10 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 260 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 70 places and 0 transitions.
Iterating post reduction 0 with 70 rules applied. Total rules applied 70 place count 177 transition count 326
Discarding 27 places :
Symmetric choice reduction at 1 with 27 rule applications. Total rules 97 place count 150 transition count 272
Iterating global reduction 1 with 27 rules applied. Total rules applied 124 place count 150 transition count 272
Ensure Unique test removed 13 transitions
Reduce isomorphic transitions removed 13 transitions.
Iterating post reduction 1 with 13 rules applied. Total rules applied 137 place count 150 transition count 259
Applied a total of 137 rules in 5 ms. Remains 150 /247 variables (removed 97) and now considering 259/326 (removed 67) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5 ms. Remains : 150/247 places, 259/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 10 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 11 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 259 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Graph (trivial) has 305 edges and 247 vertex of which 147 / 247 are part of one of the 23 SCC in 0 ms
Free SCC test removed 124 places
Ensure Unique test removed 268 transitions
Reduce isomorphic transitions removed 268 transitions.
Graph (complete) has 165 edges and 123 vertex of which 43 are kept as prefixes of interest. Removing 80 places using SCC suffix rule.1 ms
Discarding 80 places :
Also discarding 0 output transitions
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 43 transition count 57
Reduce places removed 1 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 42 transition count 56
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 6 place count 41 transition count 56
Discarding 22 places :
Symmetric choice reduction at 3 with 22 rule applications. Total rules 28 place count 19 transition count 32
Iterating global reduction 3 with 22 rules applied. Total rules applied 50 place count 19 transition count 32
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 3 with 2 rules applied. Total rules applied 52 place count 19 transition count 30
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 54 place count 18 transition count 29
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 5 with 1 rules applied. Total rules applied 55 place count 18 transition count 28
Partial Post-agglomeration rule applied 1 times.
Drop transitions (Partial Post agglomeration) removed 1 transitions
Iterating global reduction 5 with 1 rules applied. Total rules applied 56 place count 18 transition count 28
Discarding 1 places :
Symmetric choice reduction at 5 with 1 rule applications. Total rules 57 place count 17 transition count 27
Iterating global reduction 5 with 1 rules applied. Total rules applied 58 place count 17 transition count 27
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 59 place count 17 transition count 26
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 6 with 1 rules applied. Total rules applied 60 place count 17 transition count 25
Applied a total of 60 rules in 10 ms. Remains 17 /247 variables (removed 230) and now considering 25/326 (removed 301) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 11 ms. Remains : 17/247 places, 25/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 1 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 1 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 25 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Graph (trivial) has 317 edges and 247 vertex of which 155 / 247 are part of one of the 23 SCC in 0 ms
Free SCC test removed 132 places
Ensure Unique test removed 288 transitions
Reduce isomorphic transitions removed 288 transitions.
Graph (complete) has 145 edges and 115 vertex of which 32 are kept as prefixes of interest. Removing 83 places using SCC suffix rule.1 ms
Discarding 83 places :
Also discarding 0 output transitions
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 32 transition count 37
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 31 transition count 37
Discarding 24 places :
Symmetric choice reduction at 2 with 24 rule applications. Total rules 28 place count 7 transition count 11
Iterating global reduction 2 with 24 rules applied. Total rules applied 52 place count 7 transition count 11
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 2 with 2 rules applied. Total rules applied 54 place count 7 transition count 9
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 56 place count 6 transition count 8
Applied a total of 56 rules in 5 ms. Remains 6 /247 variables (removed 241) and now considering 8/326 (removed 318) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 5 ms. Remains : 6/247 places, 8/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 0 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 0 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 8 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 82 places and 0 transitions.
Iterating post reduction 0 with 82 rules applied. Total rules applied 82 place count 165 transition count 326
Discarding 29 places :
Symmetric choice reduction at 1 with 29 rule applications. Total rules 111 place count 136 transition count 268
Iterating global reduction 1 with 29 rules applied. Total rules applied 140 place count 136 transition count 268
Ensure Unique test removed 13 transitions
Reduce isomorphic transitions removed 13 transitions.
Iterating post reduction 1 with 13 rules applied. Total rules applied 153 place count 136 transition count 255
Applied a total of 153 rules in 6 ms. Remains 136 /247 variables (removed 111) and now considering 255/326 (removed 71) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6 ms. Remains : 136/247 places, 255/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 11 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 17 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 255 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 73 places and 0 transitions.
Iterating post reduction 0 with 73 rules applied. Total rules applied 73 place count 174 transition count 326
Discarding 23 places :
Symmetric choice reduction at 1 with 23 rule applications. Total rules 96 place count 151 transition count 280
Iterating global reduction 1 with 23 rules applied. Total rules applied 119 place count 151 transition count 280
Ensure Unique test removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 1 with 10 rules applied. Total rules applied 129 place count 151 transition count 270
Applied a total of 129 rules in 5 ms. Remains 151 /247 variables (removed 96) and now considering 270/326 (removed 56) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5 ms. Remains : 151/247 places, 270/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 12 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 10 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 270 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 83 places and 0 transitions.
Iterating post reduction 0 with 83 rules applied. Total rules applied 83 place count 164 transition count 326
Discarding 30 places :
Symmetric choice reduction at 1 with 30 rule applications. Total rules 113 place count 134 transition count 266
Iterating global reduction 1 with 30 rules applied. Total rules applied 143 place count 134 transition count 266
Ensure Unique test removed 13 transitions
Reduce isomorphic transitions removed 13 transitions.
Iterating post reduction 1 with 13 rules applied. Total rules applied 156 place count 134 transition count 253
Applied a total of 156 rules in 5 ms. Remains 134 /247 variables (removed 113) and now considering 253/326 (removed 73) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5 ms. Remains : 134/247 places, 253/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 9 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 8 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 253 transitions.
Starting structural reductions in LTL mode, iteration 0 : 247/247 places, 326/326 transitions.
Reduce places removed 78 places and 0 transitions.
Iterating post reduction 0 with 78 rules applied. Total rules applied 78 place count 169 transition count 326
Discarding 26 places :
Symmetric choice reduction at 1 with 26 rule applications. Total rules 104 place count 143 transition count 274
Iterating global reduction 1 with 26 rules applied. Total rules applied 130 place count 143 transition count 274
Ensure Unique test removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 1 with 11 rules applied. Total rules applied 141 place count 143 transition count 263
Applied a total of 141 rules in 5 ms. Remains 143 /247 variables (removed 104) and now considering 263/326 (removed 63) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5 ms. Remains : 143/247 places, 263/326 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 8 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 8 ms
[2024-05-31 22:02:03] [INFO ] Input system was already deterministic with 263 transitions.
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 13 ms
[2024-05-31 22:02:03] [INFO ] Flatten gal took : 12 ms
[2024-05-31 22:02:03] [INFO ] Export to MCC of 15 properties in file /home/mcc/execution/CTLFireability.sr.xml took 7 ms.
[2024-05-31 22:02:03] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 247 places, 326 transitions and 759 arcs took 7 ms.
Total runtime 5785 ms.
There are residual formulas that ITS could not solve within timeout
Usage: pnml2lts-sym [-gvqh] [--order=]
[--mu-opt] [--saturation=]
[--sat-granularity=] [--save-sat-levels]
[--guidance=] [-d|--deadlock]
[--action=] [-i|--invariant=STRING] [-n|--no-exit]
[--trace=] [--type=]
[--mu=.mu] [--ctl-star=.ctl]
[--ctl=.ctl] [--ltl=.ltl] [--dot=STRING]
[--save-levels=STRING] [--pg-solve] [--attr=]
[--saturating-attractor] [--write-strategy=.spg]
[--check-strategy] [--interactive-play] [--player]
[--pg-write=.spg] [--no-matrix] [--noack=<1|2>]
[--edge-label=] [--labels] [-m|--matrix]
[--mucalc=.mcf|] [-c|--cache]
[--allow-undefined-edges] [--allow-undefined-values]
[-p|--por= (default: heur)]
[--weak=[valmari] (default: uses stronger left-commutativity)]
[--leap] [-r|--regroup=<(T,)+>] [--sloan-w1=] [--sloan-w2=]
[--cw-max-cols=] [--cw-max-rows=] [--col-ins=<(C.C',)+>]
[--mh-timeout=] [--row-perm=<(R,)+>] [--col-perm=<(C,)+>]
[--graph-metrics] [--regroup-exit] [--regroup-time]
[-g|--pins-guards] [--vset=] [--ldd32-step=]
[--ldd32-cache=] [--ldd-step=] [--ldd-cache=]
[--cache-ratio=] [--max-increase=]
[--min-free-nodes=] [--fdd-bits=]
[--fdd-reorder=]
[--vset-cache-diff=] [--no-soundness-check] [--precise]
[--next-union] [--peak-nodes] [--maxsum=]
[--block-size=] [--cluster-size=] [-v] [-q]
[--debug=] [--stats] [--where] [--when]
[--timeout=INT] [--version] [-h|--help] [--usage]
[OPTIONS] []
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-01
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-02
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-03
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-04
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-05
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-06
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-07
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-08
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-09
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-10
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2024-11
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2023-12
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2023-13
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2023-14
Could not compute solution for formula : DLCflexbar-PT-2a-CTLFireability-2023-15

BK_STOP 1717192923961

--------------------
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_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLFireability -timeout 360 -rebuildPNML
mcc2024
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-01
ctl formula formula --ctl=/tmp/503/ctl_0_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-02
ctl formula formula --ctl=/tmp/503/ctl_1_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-03
ctl formula formula --ctl=/tmp/503/ctl_2_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-04
ctl formula formula --ctl=/tmp/503/ctl_3_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-05
ctl formula formula --ctl=/tmp/503/ctl_4_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-06
ctl formula formula --ctl=/tmp/503/ctl_5_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-07
ctl formula formula --ctl=/tmp/503/ctl_6_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-08
ctl formula formula --ctl=/tmp/503/ctl_7_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-09
ctl formula formula --ctl=/tmp/503/ctl_8_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-10
ctl formula formula --ctl=/tmp/503/ctl_9_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2024-11
ctl formula formula --ctl=/tmp/503/ctl_10_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2023-12
ctl formula formula --ctl=/tmp/503/ctl_11_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2023-13
ctl formula formula --ctl=/tmp/503/ctl_12_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2023-14
ctl formula formula --ctl=/tmp/503/ctl_13_
ctl formula name DLCflexbar-PT-2a-CTLFireability-2023-15
ctl formula formula --ctl=/tmp/503/ctl_14_
pnml2lts-sym, ** error **: unknown vector set implementation lddmc

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="DLCflexbar-PT-2a"
export BK_EXAMINATION="CTLFireability"
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 2-5568"
echo " Executing tool ltsminxred"
echo " Input is DLCflexbar-PT-2a, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r484-smll-171624275100002"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

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