About the Execution of GreatSPN+red for RobotManipulation-PT-02000
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 10204.863 | 3600000.00 | 14308370.00 | 131.00 | ???F?????F?F???? | 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.r333-tall-171679078000233.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 RobotManipulation-PT-02000, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r333-tall-171679078000233
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 428K
-rw-r--r-- 1 mcc users 6.4K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 64K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.3K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.6K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Apr 23 07:49 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Apr 23 07:49 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K May 19 07:29 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K May 19 18:58 LTLFireability.xml
-rw-r--r-- 1 mcc users 7.6K Apr 11 18:37 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 65K Apr 11 18:37 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13K Apr 11 18:36 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 100K Apr 11 18:36 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Apr 23 07:49 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Apr 23 07:49 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 6 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 6.4K May 18 16:43 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 RobotManipulation-PT-02000-CTLCardinality-2024-00
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-01
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-02
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-03
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-04
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-05
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-06
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-07
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-08
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-09
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-10
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2024-11
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2023-12
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2023-13
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2023-14
FORMULA_NAME RobotManipulation-PT-02000-CTLCardinality-2023-15
=== Now, execution of the tool begins
BK_START 1716829893103
Invoking MCC driver with
BK_TOOL=greatspnxred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=RobotManipulation-PT-02000
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool greatspn
Invoking reducer
Running Version 202405141337
[2024-05-27 17:11:34] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2024-05-27 17:11:34] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-27 17:11:34] [INFO ] Load time of PNML (sax parser for PT used): 33 ms
[2024-05-27 17:11:34] [INFO ] Transformed 15 places.
[2024-05-27 17:11:34] [INFO ] Transformed 11 transitions.
[2024-05-27 17:11:34] [INFO ] Parsed PT model containing 15 places and 11 transitions and 34 arcs in 126 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 17 ms.
Support contains 15 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Applied a total of 0 rules in 8 ms. Remains 15 /15 variables (removed 0) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 15 cols
[2024-05-27 17:11:34] [INFO ] Computed 6 invariants in 4 ms
[2024-05-27 17:11:34] [INFO ] Implicit Places using invariants in 124 ms returned []
[2024-05-27 17:11:34] [INFO ] Invariant cache hit.
[2024-05-27 17:11:34] [INFO ] Implicit Places using invariants and state equation in 41 ms returned []
Implicit Place search using SMT with State Equation took 217 ms to find 0 implicit places.
Running 10 sub problems to find dead transitions.
[2024-05-27 17:11:34] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/14 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/14 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 1/15 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 2/6 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 6 (OVERLAPS) 11/26 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/26 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (OVERLAPS) 0/26 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Real declared 26/26 variables, and 21 constraints, problems are : Problem set: 0 solved, 10 unsolved in 166 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 15/15 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 10 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/14 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/14 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 1/15 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 2/6 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 6 (OVERLAPS) 11/26 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/26 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/26 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (OVERLAPS) 0/26 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Int declared 26/26 variables, and 31 constraints, problems are : Problem set: 0 solved, 10 unsolved in 131 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 15/15 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints]
After SMT, in 321ms problems are : Problem set: 0 solved, 10 unsolved
Search for dead transitions found 0 dead transitions in 330ms
Finished structural reductions in LTL mode , in 1 iterations and 578 ms. Remains : 15/15 places, 11/11 transitions.
Support contains 15 out of 15 places after structural reductions.
[2024-05-27 17:11:35] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2024-05-27 17:11:35] [INFO ] Flatten gal took : 15 ms
FORMULA RobotManipulation-PT-02000-CTLCardinality-2024-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2024-05-27 17:11:35] [INFO ] Flatten gal took : 4 ms
[2024-05-27 17:11:35] [INFO ] Input system was already deterministic with 11 transitions.
RANDOM walk for 48032 steps (8 resets) in 117 ms. (407 steps per ms) remains 47/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 161 ms. (24 steps per ms) remains 47/47 properties
BEST_FIRST walk for 4003 steps (8 resets) in 102 ms. (38 steps per ms) remains 47/47 properties
BEST_FIRST walk for 4003 steps (8 resets) in 69 ms. (57 steps per ms) remains 47/47 properties
BEST_FIRST walk for 4003 steps (8 resets) in 39 ms. (100 steps per ms) remains 42/47 properties
BEST_FIRST walk for 4003 steps (8 resets) in 38 ms. (102 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 44 ms. (88 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 30 ms. (129 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 33 ms. (117 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 19 ms. (200 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 21 ms. (181 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 19 ms. (200 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 18 ms. (210 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 46 ms. (85 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 32 ms. (121 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 76 ms. (52 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 44 ms. (88 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 18 ms. (210 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 11 ms. (333 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 18 ms. (210 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 18 ms. (210 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 14 ms. (266 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 14 ms. (266 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 24 ms. (160 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 14 ms. (266 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 13 ms. (285 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 32 ms. (121 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 13 ms. (285 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 14 ms. (266 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 28 ms. (138 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4003 steps (8 resets) in 16 ms. (235 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4004 steps (8 resets) in 13 ms. (286 steps per ms) remains 42/42 properties
BEST_FIRST walk for 4002 steps (8 resets) in 26 ms. (148 steps per ms) remains 42/42 properties
[2024-05-27 17:11:35] [INFO ] Invariant cache hit.
Problem AtomicPropp37 is UNSAT
At refinement iteration 0 (INCLUDED_ONLY) 0/14 variables, 3/3 constraints. Problems are: Problem set: 1 solved, 41 unsolved
Problem AtomicPropp13 is UNSAT
Problem AtomicPropp26 is UNSAT
At refinement iteration 1 (INCLUDED_ONLY) 0/14 variables, 2/5 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 0/5 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 3 (OVERLAPS) 1/15 variables, 1/6 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 5 (OVERLAPS) 11/26 variables, 15/21 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/26 variables, 0/21 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 7 (OVERLAPS) 0/26 variables, 0/21 constraints. Problems are: Problem set: 3 solved, 39 unsolved
No progress, stopping.
After SMT solving in domain Real declared 26/26 variables, and 21 constraints, problems are : Problem set: 3 solved, 39 unsolved in 371 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 15/15 constraints, PredecessorRefiner: 42/42 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 3 solved, 39 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/14 variables, 3/3 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/14 variables, 2/5 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 0/5 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 3 (OVERLAPS) 1/15 variables, 1/6 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 5 (OVERLAPS) 11/26 variables, 15/21 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/26 variables, 39/60 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/26 variables, 0/60 constraints. Problems are: Problem set: 3 solved, 39 unsolved
At refinement iteration 8 (OVERLAPS) 0/26 variables, 0/60 constraints. Problems are: Problem set: 3 solved, 39 unsolved
No progress, stopping.
After SMT solving in domain Int declared 26/26 variables, and 60 constraints, problems are : Problem set: 3 solved, 39 unsolved in 390 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 15/15 constraints, PredecessorRefiner: 39/42 constraints, Known Traps: 0/0 constraints]
After SMT, in 773ms problems are : Problem set: 3 solved, 39 unsolved
Fused 39 Parikh solutions to 38 different solutions.
Parikh walk visited 36 properties in 44077 ms.
Support contains 2 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
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 4 rules applied. Total rules applied 4 place count 13 transition count 9
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 6 place count 11 transition count 9
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 6 place count 11 transition count 8
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 8 place count 10 transition count 8
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 12 place count 8 transition count 6
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 2 with 1 rules applied. Total rules applied 13 place count 8 transition count 5
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 14 place count 7 transition count 5
Applied a total of 14 rules in 21 ms. Remains 7 /15 variables (removed 8) and now considering 5/11 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 7/15 places, 5/11 transitions.
RANDOM walk for 48020 steps (8 resets) in 195 ms. (245 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 158 ms. (251 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 94 ms. (421 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 70 ms. (563 steps per ms) remains 3/3 properties
Interrupted probabilistic random walk after 978223 steps, run timeout after 3001 ms. (steps per millisecond=325 ) properties seen :1 out of 3
Probabilistic random walk after 978223 steps, saw 474486 distinct states, run finished after 3005 ms. (steps per millisecond=325 ) properties seen :1
// Phase 1: matrix 5 rows 7 cols
[2024-05-27 17:12:23] [INFO ] Computed 4 invariants in 1 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 3/7 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 5/12 variables, 7/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/12 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (OVERLAPS) 0/12 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 12/12 variables, and 11 constraints, problems are : Problem set: 0 solved, 2 unsolved in 41 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, State Equation: 7/7 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 3/7 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 5/12 variables, 7/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/12 variables, 2/13 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/12 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 0/12 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 12/12 variables, and 13 constraints, problems are : Problem set: 0 solved, 2 unsolved in 43 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, State Equation: 7/7 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
After SMT, in 105ms problems are : Problem set: 0 solved, 2 unsolved
Finished Parikh walk after 5406 steps, including 0 resets, run visited all 2 properties in 15 ms. (steps per millisecond=360 )
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Parikh walk visited 2 properties in 37 ms.
Successfully simplified 3 atomic propositions for a total of 15 simplifications.
[2024-05-27 17:12:24] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 3 ms
FORMULA RobotManipulation-PT-02000-CTLCardinality-2024-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 2 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Starting structural reductions in SI_CTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
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 3 rules applied. Total rules applied 3 place count 13 transition count 10
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 12 transition count 9
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 6 place count 11 transition count 9
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 2 Pre rules applied. Total rules applied 6 place count 11 transition count 7
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 10 place count 9 transition count 7
Applied a total of 10 rules in 3 ms. Remains 9 /15 variables (removed 6) and now considering 7/11 (removed 4) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 3 ms. Remains : 9/15 places, 7/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 11 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 7 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
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 3 rules applied. Total rules applied 3 place count 13 transition count 10
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 12 transition count 10
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 4 place count 12 transition count 9
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 6 place count 11 transition count 9
Applied a total of 6 rules in 2 ms. Remains 11 /15 variables (removed 4) and now considering 9/11 (removed 2) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 2 ms. Remains : 11/15 places, 9/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 9 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 0 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 0 ms. Remains : 14/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 14/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 14/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 14/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 13 transition count 11
Applied a total of 2 rules in 0 ms. Remains 13 /15 variables (removed 2) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 0 ms. Remains : 13/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 1 ms. Remains : 15/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 5 rules applied. Total rules applied 5 place count 13 transition count 8
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 8 place count 10 transition count 8
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 8 place count 10 transition count 7
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 10 place count 9 transition count 7
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 14 place count 7 transition count 5
Applied a total of 14 rules in 1 ms. Remains 7 /15 variables (removed 8) and now considering 5/11 (removed 6) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 1 ms. Remains : 7/15 places, 5/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 5 transitions.
RANDOM walk for 48020 steps (8 resets) in 29 ms. (1600 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 137 ms. (289 steps per ms) remains 1/1 properties
Finished probabilistic random walk after 44810 steps, run visited all 1 properties in 86 ms. (steps per millisecond=521 )
Probabilistic random walk after 44810 steps, saw 30600 distinct states, run finished after 90 ms. (steps per millisecond=497 ) properties seen :1
FORMULA RobotManipulation-PT-02000-CTLCardinality-2024-09 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
Starting structural reductions in SI_CTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 14 transition count 8
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 7 place count 11 transition count 8
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 2 with 2 rules applied. Total rules applied 9 place count 10 transition count 7
Applied a total of 9 rules in 1 ms. Remains 10 /15 variables (removed 5) and now considering 7/11 (removed 4) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 1 ms. Remains : 10/15 places, 7/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 7 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 0 ms. Remains : 15/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 2 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 14/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 14 transition count 8
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 7 place count 11 transition count 8
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 2 with 2 rules applied. Total rules applied 9 place count 10 transition count 7
Applied a total of 9 rules in 1 ms. Remains 10 /15 variables (removed 5) and now considering 7/11 (removed 4) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 1 ms. Remains : 10/15 places, 7/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 0 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 7 transitions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 14/15 places, 11/11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Input system was already deterministic with 11 transitions.
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 2 ms
[2024-05-27 17:12:24] [INFO ] Flatten gal took : 1 ms
[2024-05-27 17:12:24] [INFO ] Export to MCC of 13 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 2 ms.
[2024-05-27 17:12:24] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 15 places, 11 transitions and 34 arcs took 15 ms.
Total runtime 50177 ms.
There are residual formulas that ITS could not solve within timeout
----------------------------------------------------------------------
GreatSPN-meddly tool, MCC 2023
----------------------------------------------------------------------
Running RobotManipulation-PT-02000
IS_COLORED=
IS_NUPN=
LOADING PETRI NET FILE /home/mcc/execution/421/model.pnml (PNML) ...
PNML VERSION 2009, P/T NET.
COLOR CLASSES: 0
CONSTANTS: 0
PLACES: 15
TRANSITIONS: 11
COLOR VARS: 0
MEASURES: 0
LOADING TIME: [User 0.000s, Sys 0.000s]
SAVING FILE /home/mcc/execution/421/model (.net / .def) ...
EXPORT TIME: [User 0.000s, Sys 0.000s]
----------------------------------------------------------------------
GreatSPN/Meddly.
Copyright (C) 1987-2022, University of Torino, Italy.
website: https://github.com/greatspn/SOURCES
Based on MEDDLY version 0.16.0
Copyright (C) 2009, Iowa State University Research Foundation, Inc.
website: http://meddly.sourceforge.net
Process ID: 566
MODEL NAME: /home/mcc/execution/421/model
15 places, 11 transitions.
Creating all event NSFs..
Creating all event NSFs..
Creating all event NSFs..
Creating all event NSFs..
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
BK_TIME_CONFINEMENT_REACHED
--------------------
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//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -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="RobotManipulation-PT-02000"
export BK_EXAMINATION="CTLCardinality"
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 RobotManipulation-PT-02000, 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 r333-tall-171679078000233"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/RobotManipulation-PT-02000.tgz
mv RobotManipulation-PT-02000 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 '
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 ;