Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2025-input.r086-smll-174860102000177.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-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 2-5832
Executing tool itstools
Input is FamilyReunion-COL-L08000M0800C400P400G200, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r086-smll-174860102000177
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.2M
-rw-r--r-- 1 mcc users 9.2K May 29 14:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 107K May 29 14:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.9K May 29 14:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 47K May 29 14:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:32 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 7.0K May 29 14:32 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K May 29 14:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K May 29 14:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.6K May 29 14:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 22K May 29 14:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.3K May 29 14:47 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 90K May 29 14:47 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 15K May 29 14:47 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 101K May 29 14:47 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K May 29 14:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K May 29 14:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 29 14:32 equiv_pt
-rw-r--r-- 1 mcc users 24 May 29 14:32 instance
-rw-r--r-- 1 mcc users 5 May 29 14:32 iscolored
-rw-r--r-- 1 mcc users 661K May 29 14:32 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-00
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-01
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-02
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-03
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-04
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-05
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-06
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-07
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-08
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-09
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-10
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-11
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-12
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-13
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-14
FORMULA_NAME FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-15

=== Now, execution of the tool begins

BK_START 1748784950723

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FamilyReunion-COL-L08000M0800C400P400G200
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is COL
CTLCardinality COL
Running Version 202505121319
[2025-06-01 13:35:53] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2025-06-01 13:35:53] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-01 13:35:53] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2025-06-01 13:35:54] [WARNING] Using fallBack plugin, rng conformance not checked
[2025-06-01 13:35:55] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 1695 ms
[2025-06-01 13:35:58] [INFO ] Detected 5 constant HL places corresponding to 2006 PT places.
[2025-06-01 13:35:58] [INFO ] Imported 104 HL places and 66 HL transitions for a total of 200760109 PT places and 1.9257647E8 transition bindings in 3043 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 32 ms.
[2025-06-01 13:35:58] [INFO ] Built PT skeleton of HLPN with 104 places and 66 transitions 198 arcs in 125 ms.
[2025-06-01 13:35:58] [INFO ] Skeletonized 16 HLPN properties in 4 ms.
Initial state reduction rules removed 5 formulas.
FORMULA FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 104 stabilizing places and 66 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 104 transition count 66
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
AF dead knowledge conclusive for 1 formulas.
FORMULA FamilyReunion-COL-L08000M0800C400P400G200-CTLCardinality-2025-15 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Remains 10 properties that can be checked using skeleton over-approximation.
Reduce places removed 5 places and 0 transitions.
Computed a total of 99 stabilizing places and 66 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 99 transition count 66
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
RANDOM walk for 64024 steps (8 resets) in 262 ms. (243 steps per ms) remains 63/67 properties
BEST_FIRST walk for 4003 steps (8 resets) in 167 ms. (23 steps per ms) remains 58/63 properties
BEST_FIRST walk for 4004 steps (8 resets) in 87 ms. (45 steps per ms) remains 57/58 properties
BEST_FIRST walk for 4003 steps (8 resets) in 81 ms. (48 steps per ms) remains 57/57 properties
BEST_FIRST walk for 4004 steps (8 resets) in 80 ms. (49 steps per ms) remains 57/57 properties
BEST_FIRST walk for 4003 steps (8 resets) in 58 ms. (67 steps per ms) remains 57/57 properties
BEST_FIRST walk for 4004 steps (8 resets) in 40 ms. (97 steps per ms) remains 57/57 properties
BEST_FIRST walk for 4003 steps (8 resets) in 23 ms. (166 steps per ms) remains 56/57 properties
BEST_FIRST walk for 4003 steps (8 resets) in 30 ms. (129 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 42 ms. (93 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 41 ms. (95 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 28 ms. (138 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 57 ms. (69 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 45 ms. (87 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 46 ms. (85 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 39 ms. (100 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 44 ms. (88 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 38 ms. (102 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 47 ms. (83 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 46 ms. (85 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 40 ms. (97 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 35 ms. (111 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 31 ms. (125 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 31 ms. (125 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 34 ms. (114 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 50 ms. (78 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 39 ms. (100 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 42 ms. (93 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 47 ms. (83 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4002 steps (8 resets) in 44 ms. (88 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 47 ms. (83 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 43 ms. (90 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 49 ms. (80 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 46 ms. (85 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 46 ms. (85 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 50 ms. (78 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 21 ms. (181 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 34 ms. (114 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 39 ms. (100 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 21 ms. (181 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 27 ms. (142 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 25 ms. (154 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 30 ms. (129 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 27 ms. (142 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 24 ms. (160 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 18 ms. (210 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 20 ms. (190 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4003 steps (8 resets) in 20 ms. (190 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 24 ms. (160 steps per ms) remains 56/56 properties
BEST_FIRST walk for 4004 steps (8 resets) in 20 ms. (190 steps per ms) remains 56/56 properties
// Phase 1: matrix 66 rows 99 cols
[2025-06-01 13:35:59] [INFO ] Computed 33 invariants in 11 ms
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/58 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 56 unsolved
At refinement iteration 1 (OVERLAPS) 18/76 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 56 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 6/10 constraints. Problems are: Problem set: 0 solved, 56 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/76 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 56 unsolved
Problem AtomicPropp51 is UNSAT
At refinement iteration 4 (OVERLAPS) 23/99 variables, 23/33 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/99 variables, 0/33 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 6 (OVERLAPS) 66/165 variables, 99/132 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/165 variables, 0/132 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 8 (OVERLAPS) 0/165 variables, 0/132 constraints. Problems are: Problem set: 1 solved, 55 unsolved
No progress, stopping.
After SMT solving in domain Real declared 165/165 variables, and 132 constraints, problems are : Problem set: 1 solved, 55 unsolved in 2879 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 99/99 constraints, PredecessorRefiner: 56/56 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 55 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/57 variables, 0/0 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 1 (OVERLAPS) 19/76 variables, 4/4 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 6/10 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/76 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 4 (OVERLAPS) 23/99 variables, 23/33 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/99 variables, 0/33 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 6 (OVERLAPS) 66/165 variables, 99/132 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/165 variables, 55/187 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/165 variables, 0/187 constraints. Problems are: Problem set: 1 solved, 55 unsolved
At refinement iteration 9 (OVERLAPS) 0/165 variables, 0/187 constraints. Problems are: Problem set: 1 solved, 55 unsolved
No progress, stopping.
After SMT solving in domain Int declared 165/165 variables, and 187 constraints, problems are : Problem set: 1 solved, 55 unsolved in 5031 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 99/99 constraints, PredecessorRefiner: 55/56 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 8002ms problems are : Problem set: 1 solved, 55 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 57 out of 99 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 99/99 places, 66/66 transitions.
Graph (complete) has 123 edges and 99 vertex of which 94 are kept as prefixes of interest. Removing 5 places using SCC suffix rule.2 ms
Discarding 5 places :
Also discarding 0 output transitions
Discarding 6 places :
Implicit places reduction removed 6 places
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 0 with 8 rules applied. Total rules applied 9 place count 88 transition count 64
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 11 place count 86 transition count 64
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 11 place count 86 transition count 63
Deduced a syphon composed of 1 places in 2 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 13 place count 85 transition count 63
Applied a total of 13 rules in 84 ms. Remains 85 /99 variables (removed 14) and now considering 63/66 (removed 3) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 98 ms. Remains : 85/99 places, 63/66 transitions.
RANDOM walk for 64024 steps (8 resets) in 88 ms. (719 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 44 ms. (88 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 38 ms. (102 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4002 steps (8 resets) in 37 ms. (105 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4003 steps (8 resets) in 51 ms. (76 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4003 steps (8 resets) in 27 ms. (142 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4002 steps (8 resets) in 23 ms. (166 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 24 ms. (160 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 27 ms. (143 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 31 ms. (125 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4003 steps (8 resets) in 38 ms. (102 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4003 steps (8 resets) in 32 ms. (121 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 30 ms. (129 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4002 steps (8 resets) in 35 ms. (111 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4001 steps (8 resets) in 37 ms. (105 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 27 ms. (143 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 37 ms. (105 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 35 ms. (111 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 34 ms. (114 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4003 steps (8 resets) in 26 ms. (148 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 28 ms. (138 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4001 steps (8 resets) in 29 ms. (133 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 30 ms. (129 steps per ms) remains 55/55 properties
BEST_FIRST walk for 4003 steps (8 resets) in 22 ms. (174 steps per ms) remains 54/55 properties
BEST_FIRST walk for 4004 steps (8 resets) in 32 ms. (121 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 27 ms. (143 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 23 ms. (166 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 30 ms. (129 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4002 steps (8 resets) in 28 ms. (138 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 25 ms. (153 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 26 ms. (148 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 21 ms. (181 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 20 ms. (190 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 25 ms. (153 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 34 ms. (114 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 27 ms. (142 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 16 ms. (235 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 28 ms. (138 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 16 ms. (235 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4001 steps (8 resets) in 17 ms. (222 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4003 steps (8 resets) in 29 ms. (133 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 54/54 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 54/54 properties
Interrupted probabilistic random walk after 104652 steps, run timeout after 3001 ms. (steps per millisecond=34 ) properties seen :8 out of 54
Probabilistic random walk after 104652 steps, saw 78857 distinct states, run finished after 3019 ms. (steps per millisecond=34 ) properties seen :8
// Phase 1: matrix 63 rows 85 cols
[2025-06-01 13:36:11] [INFO ] Computed 22 invariants in 9 ms
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 1 (OVERLAPS) 17/66 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/66 variables, 4/8 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/66 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 4 (OVERLAPS) 19/85 variables, 14/22 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/85 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 6 (OVERLAPS) 63/148 variables, 85/107 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/148 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 8 (OVERLAPS) 0/148 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 46 unsolved
No progress, stopping.
After SMT solving in domain Real declared 148/148 variables, and 107 constraints, problems are : Problem set: 0 solved, 46 unsolved in 1674 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 85/85 constraints, PredecessorRefiner: 46/46 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 46 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 1 (OVERLAPS) 17/66 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/66 variables, 4/8 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/66 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 4 (OVERLAPS) 19/85 variables, 14/22 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/85 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 6 (OVERLAPS) 63/148 variables, 85/107 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/148 variables, 46/153 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/148 variables, 0/153 constraints. Problems are: Problem set: 0 solved, 46 unsolved
At refinement iteration 9 (OVERLAPS) 0/148 variables, 0/153 constraints. Problems are: Problem set: 0 solved, 46 unsolved
No progress, stopping.
After SMT solving in domain Int declared 148/148 variables, and 153 constraints, problems are : Problem set: 0 solved, 46 unsolved in 4134 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 85/85 constraints, PredecessorRefiner: 46/46 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 5842ms problems are : Problem set: 0 solved, 46 unsolved
Fused 46 Parikh solutions to 41 different solutions.
Parikh walk visited 35 properties in 33832 ms.
Support contains 19 out of 85 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 85/85 places, 63/63 transitions.
Graph (complete) has 102 edges and 85 vertex of which 83 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.1 ms
Discarding 2 places :
Also discarding 0 output transitions
Discarding 11 places :
Implicit places reduction removed 11 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 18 transitions
Trivial Post-agglo rules discarded 18 transitions
Performed 18 trivial Post agglomeration. Transition count delta: 18
Iterating post reduction 0 with 29 rules applied. Total rules applied 30 place count 72 transition count 45
Reduce places removed 18 places and 0 transitions.
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Iterating post reduction 1 with 23 rules applied. Total rules applied 53 place count 54 transition count 40
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 2 with 5 rules applied. Total rules applied 58 place count 49 transition count 40
Performed 9 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 9 Pre rules applied. Total rules applied 58 place count 49 transition count 31
Deduced a syphon composed of 9 places in 0 ms
Ensure Unique test removed 2 places
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 3 with 20 rules applied. Total rules applied 78 place count 38 transition count 31
Discarding 4 places :
Implicit places reduction removed 4 places
Iterating post reduction 3 with 4 rules applied. Total rules applied 82 place count 34 transition count 31
Applied a total of 82 rules in 28 ms. Remains 34 /85 variables (removed 51) and now considering 31/63 (removed 32) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28 ms. Remains : 34/85 places, 31/63 transitions.
RANDOM walk for 64024 steps (8 resets) in 19 ms. (3201 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 52 ms. (754 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 54 ms. (727 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 54 ms. (727 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 58 ms. (678 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 65 ms. (606 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 50 ms. (784 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 83 ms. (476 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 68 ms. (579 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 53 ms. (740 steps per ms) remains 11/11 properties
Interrupted probabilistic random walk after 189827 steps, run timeout after 3001 ms. (steps per millisecond=63 ) properties seen :0 out of 11
Probabilistic random walk after 189827 steps, saw 131915 distinct states, run finished after 3001 ms. (steps per millisecond=63 ) properties seen :0
// Phase 1: matrix 31 rows 34 cols
[2025-06-01 13:36:54] [INFO ] Computed 3 invariants in 2 ms
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/19 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 7/26 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/26 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 6/32 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/32 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (OVERLAPS) 31/63 variables, 32/35 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/63 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (OVERLAPS) 2/65 variables, 2/37 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/65 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 9 (OVERLAPS) 0/65 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Real declared 65/65 variables, and 37 constraints, problems are : Problem set: 0 solved, 11 unsolved in 236 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 34/34 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/19 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 7/26 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/26 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 6/32 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/32 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (OVERLAPS) 31/63 variables, 32/35 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/63 variables, 9/44 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/63 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (OVERLAPS) 2/65 variables, 2/46 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/65 variables, 2/48 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/65 variables, 0/48 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (OVERLAPS) 0/65 variables, 0/48 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Int declared 65/65 variables, and 48 constraints, problems are : Problem set: 0 solved, 11 unsolved in 472 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 34/34 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 718ms problems are : Problem set: 0 solved, 11 unsolved
Parikh walk visited 9 properties in 34738 ms.
Support contains 2 out of 34 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 34/34 places, 31/31 transitions.
Graph (complete) has 34 edges and 34 vertex of which 32 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.0 ms
Discarding 2 places :
Also discarding 1 output transitions
Drop transitions (Output transitions of discarded places.) removed 1 transitions
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 23 transitions
Trivial Post-agglo rules discarded 23 transitions
Performed 23 trivial Post agglomeration. Transition count delta: 23
Iterating post reduction 0 with 24 rules applied. Total rules applied 25 place count 31 transition count 7
Reduce places removed 23 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 24 rules applied. Total rules applied 49 place count 8 transition count 6
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 50 place count 7 transition count 6
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 2 Pre rules applied. Total rules applied 50 place count 7 transition count 4
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 54 place count 5 transition count 4
Applied a total of 54 rules in 7 ms. Remains 5 /34 variables (removed 29) and now considering 4/31 (removed 27) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 5/34 places, 4/31 transitions.
RANDOM walk for 64024 steps (8 resets) in 13 ms. (4573 steps per ms) remains 1/2 properties
BEST_FIRST walk for 1763 steps (0 resets) in 6 ms. (251 steps per ms) remains 0/1 properties
Successfully simplified 1 atomic propositions for a total of 10 simplifications.
[2025-06-01 13:37:30] [INFO ] Flatten gal took : 45 ms
[2025-06-01 13:37:30] [INFO ] Flatten gal took : 14 ms
Transition Gate2ANDJoin forces synchronizations/join behavior on parameter l of sort LegalResident
Transition ReceiveLangChoice forces synchronizations/join behavior on parameter m of sort MICSystem
Symmetric sort wr.t. initial and guards and successors and join/free detected :CINFORMI
Symmetric sort wr.t. initial detected :CINFORMI
Symmetric sort wr.t. initial and guards detected :CINFORMI
Applying symmetric unfolding of full symmetric sort :CINFORMI domain size was 401
Transition Gate1ANDJoin forces synchronizations/join behavior on parameter p of sort PublicAdminOffice
Symmetric sort wr.t. initial and guards and successors and join/free detected :GovernmentCommission
Symmetric sort wr.t. initial detected :GovernmentCommission
Symmetric sort wr.t. initial and guards detected :GovernmentCommission
Applying symmetric unfolding of full symmetric sort :GovernmentCommission domain size was 201
Symmetric sort wr.t. initial and guards and successors and join/free detected :Response
Symmetric sort wr.t. initial detected :Response
Transition SendClearanceToRel : guard parameter $r(Response:2) in guard (EQ $r 0)introduces in Response(2) partition with 2 elements
Total runtime 641460 ms.
Its-tools:
An error has occurred. See the log file
/home/mcc/BenchKit/itstools/itstools/configuration/1748784952012.log.

BK_STOP 1748785599261

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

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ CTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution CTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
Its-tools: Cannot open display:

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="FamilyReunion-COL-L08000M0800C400P400G200"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5832"
echo " Executing tool itstools"
echo " Input is FamilyReunion-COL-L08000M0800C400P400G200, 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 r086-smll-174860102000177"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FamilyReunion-COL-L08000M0800C400P400G200.tgz
mv FamilyReunion-COL-L08000M0800C400P400G200 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.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;