About the Execution of GreatSPN+red for DBSingleClientW-PT-d1m07
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 512.403 | 36815.00 | 54265.00 | 240.70 | FTFTTTFTFTFFTFTF | normal |
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.r091-tall-171624187900515.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)
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=====================================================================
Generated by BenchKit 2-5568
Executing tool greatspnxred
Input is DBSingleClientW-PT-d1m07, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r091-tall-171624187900515
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 920K
-rw-r--r-- 1 mcc users 6.8K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 72K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Apr 22 14:36 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Apr 22 14:36 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K May 19 07:15 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K May 19 18:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 15K Apr 12 12:49 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 163K Apr 12 12:49 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.4K Apr 12 12:48 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 82K Apr 12 12:48 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Apr 22 14:36 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Apr 22 14:36 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 6 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 432K 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 DBSingleClientW-PT-d1m07-LTLCardinality-00
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-01
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-02
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-03
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-04
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-05
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-06
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-07
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-08
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-09
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-10
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-11
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-12
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-13
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-14
FORMULA_NAME DBSingleClientW-PT-d1m07-LTLCardinality-15
=== Now, execution of the tool begins
BK_START 1716292091085
Invoking MCC driver with
BK_TOOL=greatspnxred
BK_EXAMINATION=LTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DBSingleClientW-PT-d1m07
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool greatspn
Invoking reducer
Running Version 202405141337
[2024-05-21 11:48:12] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -timeout, 360, -rebuildPNML]
[2024-05-21 11:48:12] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-21 11:48:12] [INFO ] Load time of PNML (sax parser for PT used): 123 ms
[2024-05-21 11:48:12] [INFO ] Transformed 1440 places.
[2024-05-21 11:48:12] [INFO ] Transformed 672 transitions.
[2024-05-21 11:48:12] [INFO ] Parsed PT model containing 1440 places and 672 transitions and 2688 arcs in 232 ms.
Parsed 16 properties from file /home/mcc/execution/LTLCardinality.xml in 29 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 3 formulas.
Deduced a syphon composed of 1093 places in 5 ms
Reduce places removed 1093 places and 0 transitions.
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-04 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-06 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 3 out of 347 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 347/347 places, 672/672 transitions.
Reduce places removed 20 places and 0 transitions.
Ensure Unique test removed 61 transitions
Reduce isomorphic transitions removed 61 transitions.
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 327 transition count 611
Discarding 94 places :
Symmetric choice reduction at 1 with 94 rule applications. Total rules 175 place count 233 transition count 339
Iterating global reduction 1 with 94 rules applied. Total rules applied 269 place count 233 transition count 339
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 273 place count 233 transition count 335
Discarding 71 places :
Symmetric choice reduction at 2 with 71 rule applications. Total rules 344 place count 162 transition count 264
Iterating global reduction 2 with 71 rules applied. Total rules applied 415 place count 162 transition count 264
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 2 with 6 rules applied. Total rules applied 421 place count 162 transition count 258
Discarding 41 places :
Symmetric choice reduction at 3 with 41 rule applications. Total rules 462 place count 121 transition count 193
Iterating global reduction 3 with 41 rules applied. Total rules applied 503 place count 121 transition count 193
Ensure Unique test removed 24 transitions
Reduce isomorphic transitions removed 24 transitions.
Iterating post reduction 3 with 24 rules applied. Total rules applied 527 place count 121 transition count 169
Discarding 10 places :
Symmetric choice reduction at 4 with 10 rule applications. Total rules 537 place count 111 transition count 151
Iterating global reduction 4 with 10 rules applied. Total rules applied 547 place count 111 transition count 151
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 549 place count 111 transition count 149
Discarding 7 places :
Symmetric choice reduction at 5 with 7 rule applications. Total rules 556 place count 104 transition count 142
Iterating global reduction 5 with 7 rules applied. Total rules applied 563 place count 104 transition count 142
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 5 with 3 rules applied. Total rules applied 566 place count 104 transition count 139
Discarding 5 places :
Symmetric choice reduction at 6 with 5 rule applications. Total rules 571 place count 99 transition count 134
Iterating global reduction 6 with 5 rules applied. Total rules applied 576 place count 99 transition count 134
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 6 with 1 rules applied. Total rules applied 577 place count 99 transition count 133
Discarding 1 places :
Symmetric choice reduction at 7 with 1 rule applications. Total rules 578 place count 98 transition count 127
Iterating global reduction 7 with 1 rules applied. Total rules applied 579 place count 98 transition count 127
Applied a total of 579 rules in 90 ms. Remains 98 /347 variables (removed 249) and now considering 127/672 (removed 545) transitions.
// Phase 1: matrix 127 rows 98 cols
[2024-05-21 11:48:12] [INFO ] Computed 2 invariants in 15 ms
[2024-05-21 11:48:13] [INFO ] Implicit Places using invariants in 224 ms returned []
[2024-05-21 11:48:13] [INFO ] Invariant cache hit.
[2024-05-21 11:48:13] [INFO ] State equation strengthened by 44 read => feed constraints.
[2024-05-21 11:48:13] [INFO ] Implicit Places using invariants and state equation in 180 ms returned []
Implicit Place search using SMT with State Equation took 432 ms to find 0 implicit places.
Running 126 sub problems to find dead transitions.
[2024-05-21 11:48:13] [INFO ] Invariant cache hit.
[2024-05-21 11:48:13] [INFO ] State equation strengthened by 44 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/96 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 1 (OVERLAPS) 1/97 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/97 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/97 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 4 (OVERLAPS) 127/224 variables, 97/99 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/224 variables, 44/143 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/224 variables, 0/143 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 7 (OVERLAPS) 1/225 variables, 1/144 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/225 variables, 0/144 constraints. Problems are: Problem set: 0 solved, 126 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 0/225 variables, 0/144 constraints. Problems are: Problem set: 0 solved, 126 unsolved
No progress, stopping.
After SMT solving in domain Real declared 225/225 variables, and 144 constraints, problems are : Problem set: 0 solved, 126 unsolved in 4551 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 44/44 constraints, PredecessorRefiner: 126/126 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 126 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/96 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 1 (OVERLAPS) 1/97 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/97 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/97 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 4 (OVERLAPS) 127/224 variables, 97/99 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/224 variables, 44/143 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/224 variables, 114/257 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/224 variables, 0/257 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 8 (OVERLAPS) 1/225 variables, 1/258 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/225 variables, 12/270 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/225 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 126 unsolved
At refinement iteration 11 (OVERLAPS) 0/225 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 126 unsolved
No progress, stopping.
After SMT solving in domain Int declared 225/225 variables, and 270 constraints, problems are : Problem set: 0 solved, 126 unsolved in 9777 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 44/44 constraints, PredecessorRefiner: 126/126 constraints, Known Traps: 0/0 constraints]
After SMT, in 14588ms problems are : Problem set: 0 solved, 126 unsolved
Search for dead transitions found 0 dead transitions in 14611ms
Starting structural reductions in LTL mode, iteration 1 : 98/347 places, 127/672 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 15153 ms. Remains : 98/347 places, 127/672 transitions.
Support contains 3 out of 98 places after structural reductions.
[2024-05-21 11:48:28] [INFO ] Flatten gal took : 33 ms
[2024-05-21 11:48:28] [INFO ] Flatten gal took : 14 ms
[2024-05-21 11:48:28] [INFO ] Input system was already deterministic with 127 transitions.
RANDOM walk for 40000 steps (9173 resets) in 1364 ms. (29 steps per ms) remains 1/2 properties
BEST_FIRST walk for 40002 steps (3993 resets) in 137 ms. (289 steps per ms) remains 1/1 properties
[2024-05-21 11:48:28] [INFO ] Invariant cache hit.
[2024-05-21 11:48:28] [INFO ] State equation strengthened by 44 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 20/28 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/28 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 89/117 variables, 13/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/117 variables, 14/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/117 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 32/149 variables, 1/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/149 variables, 32/67 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/149 variables, 0/67 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 22/171 variables, 1/68 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/171 variables, 5/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/171 variables, 0/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 50/221 variables, 39/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/221 variables, 28/140 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/221 variables, 0/140 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/225 variables, 2/142 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/225 variables, 2/144 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/225 variables, 0/144 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/225 variables, 0/144 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 225/225 variables, and 144 constraints, problems are : Problem set: 0 solved, 1 unsolved in 82 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 44/44 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 20/28 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/28 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 89/117 variables, 13/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/117 variables, 14/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/117 variables, 1/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/117 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 32/149 variables, 1/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/149 variables, 32/68 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/149 variables, 0/68 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 22/171 variables, 1/69 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/171 variables, 5/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/171 variables, 0/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 50/221 variables, 39/113 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/221 variables, 28/141 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/221 variables, 0/141 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/225 variables, 2/143 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/225 variables, 2/145 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/225 variables, 0/145 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/225 variables, 0/145 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 225/225 variables, and 145 constraints, problems are : Problem set: 0 solved, 1 unsolved in 116 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 44/44 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 204ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 11 ms.
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 127/127 transitions.
Graph (complete) has 304 edges and 98 vertex of which 96 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.1 ms
Discarding 2 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 2 transitions
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 5 place count 96 transition count 123
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 6 place count 95 transition count 122
Iterating global reduction 1 with 1 rules applied. Total rules applied 7 place count 95 transition count 122
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 9 place count 93 transition count 120
Iterating global reduction 1 with 2 rules applied. Total rules applied 11 place count 93 transition count 120
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 12 place count 92 transition count 117
Iterating global reduction 1 with 1 rules applied. Total rules applied 13 place count 92 transition count 117
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 14 place count 91 transition count 116
Iterating global reduction 1 with 1 rules applied. Total rules applied 15 place count 91 transition count 116
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 16 place count 90 transition count 115
Iterating global reduction 1 with 1 rules applied. Total rules applied 17 place count 90 transition count 115
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 18 place count 89 transition count 114
Iterating global reduction 1 with 1 rules applied. Total rules applied 19 place count 89 transition count 114
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 20 place count 88 transition count 112
Iterating global reduction 1 with 1 rules applied. Total rules applied 21 place count 88 transition count 112
Applied a total of 21 rules in 31 ms. Remains 88 /98 variables (removed 10) and now considering 112/127 (removed 15) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32 ms. Remains : 88/98 places, 112/127 transitions.
RANDOM walk for 40000 steps (9271 resets) in 134 ms. (296 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3896 resets) in 44 ms. (888 steps per ms) remains 1/1 properties
Finished probabilistic random walk after 19074 steps, run visited all 1 properties in 69 ms. (steps per millisecond=276 )
Probabilistic random walk after 19074 steps, saw 9057 distinct states, run finished after 73 ms. (steps per millisecond=261 ) properties seen :1
Computed a total of 5 stabilizing places and 14 stable transitions
Graph (complete) has 331 edges and 98 vertex of which 96 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.5 ms
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F(p0)))'
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 98/98 places, 127/127 transitions.
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 97 transition count 125
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 4 place count 96 transition count 124
Iterating global reduction 1 with 1 rules applied. Total rules applied 5 place count 96 transition count 124
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 7 place count 94 transition count 122
Iterating global reduction 1 with 2 rules applied. Total rules applied 9 place count 94 transition count 122
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 10 place count 93 transition count 119
Iterating global reduction 1 with 1 rules applied. Total rules applied 11 place count 93 transition count 119
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 12 place count 92 transition count 118
Iterating global reduction 1 with 1 rules applied. Total rules applied 13 place count 92 transition count 118
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 14 place count 91 transition count 117
Iterating global reduction 1 with 1 rules applied. Total rules applied 15 place count 91 transition count 117
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 16 place count 90 transition count 116
Iterating global reduction 1 with 1 rules applied. Total rules applied 17 place count 90 transition count 116
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 18 place count 89 transition count 114
Iterating global reduction 1 with 1 rules applied. Total rules applied 19 place count 89 transition count 114
Applied a total of 19 rules in 11 ms. Remains 89 /98 variables (removed 9) and now considering 114/127 (removed 13) transitions.
// Phase 1: matrix 114 rows 89 cols
[2024-05-21 11:48:29] [INFO ] Computed 2 invariants in 2 ms
[2024-05-21 11:48:29] [INFO ] Implicit Places using invariants in 70 ms returned []
[2024-05-21 11:48:29] [INFO ] Invariant cache hit.
[2024-05-21 11:48:29] [INFO ] State equation strengthened by 38 read => feed constraints.
[2024-05-21 11:48:29] [INFO ] Implicit Places using invariants and state equation in 128 ms returned []
Implicit Place search using SMT with State Equation took 201 ms to find 0 implicit places.
Running 113 sub problems to find dead transitions.
[2024-05-21 11:48:29] [INFO ] Invariant cache hit.
[2024-05-21 11:48:29] [INFO ] State equation strengthened by 38 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/88 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 1 (OVERLAPS) 1/89 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/89 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/89 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 4 (OVERLAPS) 114/203 variables, 89/91 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/203 variables, 38/129 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/203 variables, 0/129 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 7 (OVERLAPS) 0/203 variables, 0/129 constraints. Problems are: Problem set: 0 solved, 113 unsolved
No progress, stopping.
After SMT solving in domain Real declared 203/203 variables, and 129 constraints, problems are : Problem set: 0 solved, 113 unsolved in 2518 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 89/89 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 113/113 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 113 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/88 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 1 (OVERLAPS) 1/89 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/89 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/89 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 4 (OVERLAPS) 114/203 variables, 89/91 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/203 variables, 38/129 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/203 variables, 113/242 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 0/242 constraints. Problems are: Problem set: 0 solved, 113 unsolved
At refinement iteration 8 (OVERLAPS) 0/203 variables, 0/242 constraints. Problems are: Problem set: 0 solved, 113 unsolved
No progress, stopping.
After SMT solving in domain Int declared 203/203 variables, and 242 constraints, problems are : Problem set: 0 solved, 113 unsolved in 4332 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 89/89 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 113/113 constraints, Known Traps: 0/0 constraints]
After SMT, in 7031ms problems are : Problem set: 0 solved, 113 unsolved
Search for dead transitions found 0 dead transitions in 7034ms
Starting structural reductions in LTL mode, iteration 1 : 89/98 places, 114/127 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7254 ms. Remains : 89/98 places, 114/127 transitions.
Stuttering acceptance computed with spot in 198 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : DBSingleClientW-PT-d1m07-LTLCardinality-01
Product exploration explored 100000 steps with 50000 reset in 298 ms.
Product exploration explored 100000 steps with 50000 reset in 176 ms.
Computed a total of 5 stabilizing places and 13 stable transitions
Graph (complete) has 302 edges and 89 vertex of which 88 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Computed a total of 5 stabilizing places and 13 stable transitions
Knowledge obtained : [p0, (X p0), (X (X p0))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 3 factoid took 18 ms. Reduced automaton from 2 states, 2 edges and 1 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-01 TRUE TECHNIQUES KNOWLEDGE
Treatment of property DBSingleClientW-PT-d1m07-LTLCardinality-01 finished in 8010 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 2 out of 98 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 98/98 places, 127/127 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 97 transition count 121
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 97 transition count 121
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 96 transition count 120
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 96 transition count 120
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 95 transition count 119
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 95 transition count 119
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 94 transition count 117
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 94 transition count 117
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 93 transition count 116
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 93 transition count 116
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 92 transition count 115
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 92 transition count 115
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 14 place count 92 transition count 113
Applied a total of 14 rules in 13 ms. Remains 92 /98 variables (removed 6) and now considering 113/127 (removed 14) transitions.
// Phase 1: matrix 113 rows 92 cols
[2024-05-21 11:48:37] [INFO ] Computed 2 invariants in 2 ms
[2024-05-21 11:48:37] [INFO ] Implicit Places using invariants in 62 ms returned []
[2024-05-21 11:48:37] [INFO ] Invariant cache hit.
[2024-05-21 11:48:37] [INFO ] State equation strengthened by 36 read => feed constraints.
[2024-05-21 11:48:37] [INFO ] Implicit Places using invariants and state equation in 144 ms returned []
Implicit Place search using SMT with State Equation took 210 ms to find 0 implicit places.
Running 112 sub problems to find dead transitions.
[2024-05-21 11:48:37] [INFO ] Invariant cache hit.
[2024-05-21 11:48:37] [INFO ] State equation strengthened by 36 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/90 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 1 (OVERLAPS) 1/91 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/91 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/91 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 4 (OVERLAPS) 113/204 variables, 91/93 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 36/129 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/129 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 7 (OVERLAPS) 1/205 variables, 1/130 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/205 variables, 0/130 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 9 (OVERLAPS) 0/205 variables, 0/130 constraints. Problems are: Problem set: 0 solved, 112 unsolved
No progress, stopping.
After SMT solving in domain Real declared 205/205 variables, and 130 constraints, problems are : Problem set: 0 solved, 112 unsolved in 3632 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 92/92 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 112/112 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 112 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/90 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 1 (OVERLAPS) 1/91 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/91 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/91 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 4 (OVERLAPS) 113/204 variables, 91/93 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 36/129 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 106/235 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/204 variables, 0/235 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 8 (OVERLAPS) 1/205 variables, 1/236 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/205 variables, 6/242 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/205 variables, 0/242 constraints. Problems are: Problem set: 0 solved, 112 unsolved
At refinement iteration 11 (OVERLAPS) 0/205 variables, 0/242 constraints. Problems are: Problem set: 0 solved, 112 unsolved
No progress, stopping.
After SMT solving in domain Int declared 205/205 variables, and 242 constraints, problems are : Problem set: 0 solved, 112 unsolved in 6795 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 92/92 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 112/112 constraints, Known Traps: 0/0 constraints]
After SMT, in 10522ms problems are : Problem set: 0 solved, 112 unsolved
Search for dead transitions found 0 dead transitions in 10524ms
Starting structural reductions in LTL mode, iteration 1 : 92/98 places, 113/127 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10749 ms. Remains : 92/98 places, 113/127 transitions.
Stuttering acceptance computed with spot in 88 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : DBSingleClientW-PT-d1m07-LTLCardinality-15
Entered a terminal (fully accepting) state of product in 190 steps with 44 reset in 2 ms.
FORMULA DBSingleClientW-PT-d1m07-LTLCardinality-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property DBSingleClientW-PT-d1m07-LTLCardinality-15 finished in 10853 ms.
All properties solved by simple procedures.
Total runtime 35589 ms.
ITS solved all properties within timeout
BK_STOP 1716292127900
--------------------
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 LTLCardinality -timeout 360 -rebuildPNML
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="DBSingleClientW-PT-d1m07"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="greatspnxred"
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 greatspnxred"
echo " Input is DBSingleClientW-PT-d1m07, examination is LTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r091-tall-171624187900515"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DBSingleClientW-PT-d1m07.tgz
mv DBSingleClientW-PT-d1m07 execution
cd execution
if [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "UpperBounds" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] || [ "LTLCardinality" = "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 [ "LTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLCardinality" != "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 "LTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLCardinality.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLCardinality"
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 ;