fond
Model Checking Contest 2026
16th edition, Hamburg, Germany, June 23, 2026
Execution of r338-smll-178021499200299
Last Updated
Jun 17, 2026

About the Execution of ITS-Tools for ErlangenMainframeV2-PT-bP12C04

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
1205.915 116419.00 167456.00 1018.90 FTFFFFFTTTFTTTTT normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r338-smll-178021499200299.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-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 2-5973
Executing tool itstools
Input is ErlangenMainframeV2-PT-bP12C04, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r338-smll-178021499200299
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 92M
-rw-r--r-- 1 mcc users 7.0K May 27 10:11 CTLCardinality.txt
-rw-r--r-- 1 mcc users 73K May 27 10:11 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.1K May 27 10:09 CTLFireability.txt
-rw-r--r-- 1 mcc users 65K May 27 10:09 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 27 10:45 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K May 27 10:45 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K May 27 10:45 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 27 10:45 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 26 18:17 NewModel
-rw-r--r-- 1 mcc users 12K May 27 10:14 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 128K May 27 10:14 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.9K May 27 10:13 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 49K May 27 10:13 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 27 10:45 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K May 27 10:45 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 26 18:17 equiv_col
-rw-r--r-- 1 mcc users 8 May 26 18:17 instance
-rw-r--r-- 1 mcc users 6 May 26 18:17 iscolored
-rw-r--r-- 1 mcc users 91M May 26 18:17 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 ErlangenMainframeV2-PT-bP12C04-LTLCardinality-00
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-01
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-02
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-03
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-04
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-05
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-06
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-07
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-08
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-09
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-10
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-11
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-12
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-13
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-14
FORMULA_NAME ErlangenMainframeV2-PT-bP12C04-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1780422500704

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ErlangenMainframeV2-PT-bP12C04
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
LTLCardinality PT
Running Version 202604301425
[2026-06-02 17:48:22] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-06-02 17:48:22] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-02 17:48:27] [INFO ] Load time of PNML (sax parser for PT used): 4879 ms
[2026-06-02 17:48:28] [INFO ] Transformed 343 places.
[2026-06-02 17:48:28] [INFO ] Transformed 62564 transitions.
[2026-06-02 17:48:28] [INFO ] Found NUPN structural information;
[2026-06-02 17:48:28] [INFO ] Parsed PT model containing 343 places and 62564 transitions and 1825698 arcs in 5767 ms.
Parsed 16 properties from file /home/mcc/execution/LTLCardinality.xml in 19 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 4 formulas.
Initial state reduction rules removed 3 formulas.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-05 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-06 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 22 out of 343 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 343/343 places, 62564/62564 transitions.
Discarding 62 places :
Symmetric choice reduction at 0 with 62 rule applications. Total rules 62 place count 281 transition count 62502
Iterating global reduction 0 with 62 rules applied. Total rules applied 124 place count 281 transition count 62502
Discarding 36 places :
Symmetric choice reduction at 0 with 36 rule applications. Total rules 160 place count 245 transition count 62466
Iterating global reduction 0 with 36 rules applied. Total rules applied 196 place count 245 transition count 62466
Discarding 14 places :
Symmetric choice reduction at 0 with 14 rule applications. Total rules 210 place count 231 transition count 41759
Ensure Unique test removed 7 places
Iterating global reduction 0 with 21 rules applied. Total rules applied 231 place count 224 transition count 41759
Discarding 13 places :
Symmetric choice reduction at 0 with 13 rule applications. Total rules 244 place count 211 transition count 396
Iterating global reduction 0 with 13 rules applied. Total rules applied 257 place count 211 transition count 396
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 261 place count 207 transition count 391
Iterating global reduction 0 with 4 rules applied. Total rules applied 265 place count 207 transition count 391
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 268 place count 204 transition count 388
Iterating global reduction 0 with 3 rules applied. Total rules applied 271 place count 204 transition count 388
Applied a total of 271 rules in 25666 ms. Remains 204 /343 variables (removed 139) and now considering 388/62564 (removed 62176) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-16411193554340628295.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-7583599519144714678.kers'
[2026-06-02 17:48:55] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-16411193554340628295.kers, --Pflows, --basisKERS=/tmp/petrispot-output-7583599519144714678.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 388 rows 204 cols 4214 entries
Finished phase 1 with 177 SingleSign rule and 2 generalized
[2026-06-02 17:48:55] [INFO ] Computed 25 invariants in 4 ms
Computed 25 P flows in 5 ms.
Exported basis to /tmp/petrispot-output-7583599519144714678.kers
Total runtime 6 ms.
[2026-06-02 17:48:56] [INFO ] Implicit Places using invariants in 770 ms returned [87]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 832 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 203/343 places, 388/62564 transitions.
Applied a total of 0 rules in 5 ms. Remains 203 /203 variables (removed 0) and now considering 388/388 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 26535 ms. Remains : 203/343 places, 388/62564 transitions.
Starting structural reductions in LTL mode, iteration 0 : 203/203 places, 388/388 transitions.
Applied a total of 0 rules in 6 ms. Remains 203 /203 variables (removed 0) and now considering 388/388 (removed 0) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-5442267410872909900.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9663029795984331683.kers'
[2026-06-02 17:48:56] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-5442267410872909900.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9663029795984331683.kers]
Culled 0 columns in 1 ms.
// Phase 1: matrix 388 rows 203 cols 4054 entries
Finished phase 1 with 177 SingleSign rule and 2 generalized
[2026-06-02 17:48:56] [INFO ] Computed 24 invariants in 5 ms
Computed 24 P flows in 6 ms.
Exported basis to /tmp/petrispot-output-9663029795984331683.kers
Total runtime 7 ms.
[2026-06-02 17:48:56] [INFO ] Implicit Places using invariants in 487 ms returned []
[2026-06-02 17:48:56] [INFO ] Invariant cache hit.
[2026-06-02 17:48:57] [INFO ] Implicit Places using invariants and state equation in 774 ms returned []
Implicit Place search using SMT with State Equation took 1281 ms to find 0 implicit places.
Running 387 sub problems to find dead transitions.
[2026-06-02 17:48:57] [INFO ] Invariant cache hit.
Excessive predecessor constraint size, skipping predecessor.
At refinement iteration 0 (INCLUDED_ONLY) 0/202 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/202 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 2 (OVERLAPS) 1/203 variables, 11/24 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/203 variables, 9/33 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/203 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 5 (OVERLAPS) 388/591 variables, 203/236 constraints. Problems are: Problem set: 0 solved, 387 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Broken pipe")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 591/591 variables, and 236 constraints, problems are : Problem set: 0 solved, 387 unsolved in 30032 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, Generalized P Invariants (flows): 13/13 constraints, State Equation: 203/203 constraints, PredecessorRefiner: 387/259 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 387 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/202 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/202 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 2 (OVERLAPS) 1/203 variables, 11/24 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/203 variables, 9/33 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/203 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 5 (OVERLAPS) 388/591 variables, 203/236 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/591 variables, 259/495 constraints. Problems are: Problem set: 0 solved, 387 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/591 variables, 9/504 constraints. Problems are: Problem set: 0 solved, 387 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 591/591 variables, and 504 constraints, problems are : Problem set: 0 solved, 387 unsolved in 30024 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, Generalized P Invariants (flows): 13/13 constraints, State Equation: 203/203 constraints, PredecessorRefiner: 387/259 constraints, Known Traps: 18/18 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 60940ms problems are : Problem set: 0 solved, 387 unsolved
Search for dead transitions found 0 dead transitions in 60977ms
Finished structural reductions in LTL mode , in 1 iterations and 62311 ms. Remains : 203/203 places, 388/388 transitions.
Support contains 22 out of 203 places after structural reductions.
[2026-06-02 17:49:59] [INFO ] Flatten gal took : 320 ms
[2026-06-02 17:49:59] [INFO ] Flatten gal took : 137 ms
[2026-06-02 17:49:59] [INFO ] Input system was already deterministic with 388 transitions.
Support contains 19 out of 203 places (down from 22) after GAL structural reductions.
RANDOM walk for 40000 steps (8 resets) in 3019 ms. (13 steps per ms) remains 6/12 properties
BEST_FIRST walk for 40001 steps (8 resets) in 305 ms. (130 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40000 steps (8 resets) in 322 ms. (123 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40001 steps (8 resets) in 135 ms. (294 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40000 steps (8 resets) in 418 ms. (95 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40001 steps (8 resets) in 267 ms. (149 steps per ms) remains 5/6 properties
BEST_FIRST walk for 40000 steps (8 resets) in 283 ms. (140 steps per ms) remains 4/5 properties
[2026-06-02 17:50:01] [INFO ] Invariant cache hit.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (OVERLAPS) 21/27 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/27 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 83/110 variables, 9/11 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/110 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 93/203 variables, 13/24 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/203 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (OVERLAPS) 388/591 variables, 203/227 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/591 variables, 0/227 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 9 (OVERLAPS) 0/591 variables, 0/227 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 591/591 variables, and 227 constraints, problems are : Problem set: 0 solved, 4 unsolved in 476 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, Generalized P Invariants (flows): 13/13 constraints, State Equation: 203/203 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (OVERLAPS) 21/27 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/27 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 83/110 variables, 9/11 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/110 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 93/203 variables, 13/24 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/203 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (OVERLAPS) 388/591 variables, 203/227 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/591 variables, 4/231 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/591 variables, 7/238 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/591 variables, 1/239 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/591 variables, 0/239 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 12 (OVERLAPS) 0/591 variables, 0/239 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Int declared 591/591 variables, and 239 constraints, problems are : Problem set: 0 solved, 4 unsolved in 3136 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, Generalized P Invariants (flows): 13/13 constraints, State Equation: 203/203 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 8/8 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 3626ms problems are : Problem set: 0 solved, 4 unsolved
Finished Parikh walk after 62374 steps, including 603 resets, run visited all 1 properties in 146 ms. (steps per millisecond=427 )
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Parikh walk visited 4 properties in 981 ms.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-04 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 24 stabilizing places and 24 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((!p0 U (X(X(!p1))||G(p2))))'
Support contains 5 out of 203 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 203/203 places, 388/388 transitions.
Discarding 11 places :
Symmetric choice reduction at 0 with 11 rule applications. Total rules 11 place count 192 transition count 314
Iterating global reduction 0 with 11 rules applied. Total rules applied 22 place count 192 transition count 314
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 28 place count 186 transition count 293
Iterating global reduction 0 with 6 rules applied. Total rules applied 34 place count 186 transition count 293
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 38 place count 182 transition count 247
Ensure Unique test removed 2 places
Iterating global reduction 0 with 6 rules applied. Total rules applied 44 place count 180 transition count 247
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 47 place count 177 transition count 221
Iterating global reduction 0 with 3 rules applied. Total rules applied 50 place count 177 transition count 221
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 51 place count 176 transition count 219
Iterating global reduction 0 with 1 rules applied. Total rules applied 52 place count 176 transition count 219
Applied a total of 52 rules in 17 ms. Remains 176 /203 variables (removed 27) and now considering 219/388 (removed 169) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-11671178433600218948.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-8172313873368486440.kers'
[2026-06-02 17:50:06] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-11671178433600218948.kers, --Pflows, --basisKERS=/tmp/petrispot-output-8172313873368486440.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 219 rows 176 cols 788 entries
Finished phase 1 with 152 SingleSign rule and 2 generalized
[2026-06-02 17:50:06] [INFO ] Computed 22 invariants in 1 ms
Computed 22 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-8172313873368486440.kers
Total runtime 2 ms.
[2026-06-02 17:50:06] [INFO ] Implicit Places using invariants in 137 ms returned [76]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 147 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 175/203 places, 219/388 transitions.
Applied a total of 0 rules in 2 ms. Remains 175 /175 variables (removed 0) and now considering 219/219 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 167 ms. Remains : 175/203 places, 219/388 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((!p0 U (X(X(!p1))||G(p2))))'
Stuttering acceptance computed with spot in 710 ms :[(AND p1 (NOT p2)), p1, (AND p1 (NOT p2)), (AND p1 (NOT p2)), p1, true, (AND p1 (NOT p2)), p1, (AND p1 (NOT p2)), (AND (NOT p2) p1), (NOT p2)]
Running random walk in product with property : ErlangenMainframeV2-PT-bP12C04-LTLCardinality-00
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 2 ms.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property ErlangenMainframeV2-PT-bP12C04-LTLCardinality-00 finished in 1000 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((p0 U X(p1))&&X(X(F(p2)))))'
Support contains 5 out of 203 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 203/203 places, 388/388 transitions.
Discarding 11 places :
Symmetric choice reduction at 0 with 11 rule applications. Total rules 11 place count 192 transition count 299
Iterating global reduction 0 with 11 rules applied. Total rules applied 22 place count 192 transition count 299
Discarding 6 places :
Symmetric choice reduction at 0 with 6 rule applications. Total rules 28 place count 186 transition count 255
Ensure Unique test removed 1 places
Iterating global reduction 0 with 7 rules applied. Total rules applied 35 place count 185 transition count 255
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 38 place count 182 transition count 233
Ensure Unique test removed 1 places
Iterating global reduction 0 with 4 rules applied. Total rules applied 42 place count 181 transition count 233
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 44 place count 179 transition count 223
Iterating global reduction 0 with 2 rules applied. Total rules applied 46 place count 179 transition count 223
Applied a total of 46 rules in 19 ms. Remains 179 /203 variables (removed 24) and now considering 223/388 (removed 165) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-18045956557213202107.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-13521815177216077475.kers'
[2026-06-02 17:50:07] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-18045956557213202107.kers, --Pflows, --basisKERS=/tmp/petrispot-output-13521815177216077475.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 223 rows 179 cols 796 entries
Finished phase 1 with 155 SingleSign rule and 2 generalized
[2026-06-02 17:50:07] [INFO ] Computed 22 invariants in 14 ms
Computed 22 P flows in 24 ms.
Exported basis to /tmp/petrispot-output-13521815177216077475.kers
Total runtime 24 ms.
[2026-06-02 17:50:07] [INFO ] Implicit Places using invariants in 392 ms returned [89]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 403 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 178/203 places, 223/388 transitions.
Applied a total of 0 rules in 2 ms. Remains 178 /178 variables (removed 0) and now considering 223/223 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 424 ms. Remains : 178/203 places, 223/388 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((p0 U X(p1))&&X(X(F(p2)))))'
Stuttering acceptance computed with spot in 233 ms :[(OR (NOT p1) (NOT p2)), (NOT p1), (NOT p2), (NOT p1), true, (NOT p2)]
Running random walk in product with property : ErlangenMainframeV2-PT-bP12C04-LTLCardinality-01
Product exploration explored 100000 steps with 40022 reset in 329 ms.
Product exploration explored 100000 steps with 40011 reset in 201 ms.
Computed a total of 24 stabilizing places and 24 stable transitions
Computed a total of 24 stabilizing places and 24 stable transitions
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 10 factoid took 23 ms. Proved property starting from automaton with 6 states, 9 edges and 3 AP (stutter sensitive
Knowledge-based reduction took 34 ms.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-01 TRUE TECHNIQUES KNOWLEDGE
Treatment of property ErlangenMainframeV2-PT-bP12C04-LTLCardinality-01 finished in 1287 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 2 out of 203 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 203/203 places, 388/388 transitions.
Graph (trivial) has 179 edges and 203 vertex of which 11 / 203 are part of one of the 5 SCC in 2 ms
Free SCC test removed 6 places
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Reduce places removed 1 places and 1 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 42 transitions
Trivial Post-agglo rules discarded 42 transitions
Performed 42 trivial Post agglomeration. Transition count delta: 42
Iterating post reduction 0 with 42 rules applied. Total rules applied 43 place count 196 transition count 338
Reduce places removed 42 places and 0 transitions.
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 5 transitions
Trivial Post-agglo rules discarded 5 transitions
Performed 5 trivial Post agglomeration. Transition count delta: 5
Iterating post reduction 1 with 50 rules applied. Total rules applied 93 place count 154 transition count 330
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 2 with 5 rules applied. Total rules applied 98 place count 149 transition count 330
Performed 11 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 11 Pre rules applied. Total rules applied 98 place count 149 transition count 319
Deduced a syphon composed of 11 places in 1 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 3 with 22 rules applied. Total rules applied 120 place count 138 transition count 319
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 126 place count 132 transition count 298
Ensure Unique test removed 1 places
Iterating global reduction 3 with 7 rules applied. Total rules applied 133 place count 131 transition count 298
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 138 place count 126 transition count 219
Ensure Unique test removed 4 places
Iterating global reduction 3 with 9 rules applied. Total rules applied 147 place count 122 transition count 219
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 151 place count 118 transition count 159
Iterating global reduction 3 with 4 rules applied. Total rules applied 155 place count 118 transition count 159
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 156 place count 117 transition count 157
Iterating global reduction 3 with 1 rules applied. Total rules applied 157 place count 117 transition count 157
Performed 54 Post agglomeration using F-continuation condition.Transition count delta: 54
Deduced a syphon composed of 54 places in 0 ms
Reduce places removed 54 places and 0 transitions.
Iterating global reduction 3 with 108 rules applied. Total rules applied 265 place count 63 transition count 103
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 3 with 6 rules applied. Total rules applied 271 place count 63 transition count 97
Discarding 3 places :
Symmetric choice reduction at 4 with 3 rule applications. Total rules 274 place count 60 transition count 90
Iterating global reduction 4 with 3 rules applied. Total rules applied 277 place count 60 transition count 90
Performed 8 Post agglomeration using F-continuation condition with reduction of 12 identical transitions.
Deduced a syphon composed of 8 places in 0 ms
Reduce places removed 8 places and 0 transitions.
Iterating global reduction 4 with 16 rules applied. Total rules applied 293 place count 52 transition count 108
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 4 with 12 rules applied. Total rules applied 305 place count 52 transition count 96
Discarding 2 places :
Symmetric choice reduction at 5 with 2 rule applications. Total rules 307 place count 50 transition count 92
Iterating global reduction 5 with 2 rules applied. Total rules applied 309 place count 50 transition count 92
Ensure Unique test removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 5 with 10 rules applied. Total rules applied 319 place count 50 transition count 82
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -13
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 6 with 2 rules applied. Total rules applied 321 place count 49 transition count 95
Drop transitions (Redundant composition of simpler transitions.) removed 23 transitions
Redundant transition composition rules discarded 23 transitions
Iterating global reduction 6 with 23 rules applied. Total rules applied 344 place count 49 transition count 72
Partial Post-agglomeration rule applied 1 times.
Drop transitions (Partial Post agglomeration) removed 1 transitions
Iterating global reduction 6 with 1 rules applied. Total rules applied 345 place count 49 transition count 72
Applied a total of 345 rules in 160 ms. Remains 49 /203 variables (removed 154) and now considering 72/388 (removed 316) transitions.
[2026-06-02 17:50:08] [INFO ] Flow matrix only has 54 transitions (discarded 18 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-18001747960910952623.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-6168466101996058325.kers'
[2026-06-02 17:50:08] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-18001747960910952623.kers, --Pflows, --basisKERS=/tmp/petrispot-output-6168466101996058325.kers]
Normalized transition count is 53 out of 54 initially.
Culling duplicate invariants (modulo rational): removing 2 columns.
Culled 2 columns in 0 ms.
// Phase 1: matrix 53 rows 47 cols 298 entries
Finished phase 1 with 30 SingleSign rule and 0 generalized
[2026-06-02 17:50:08] [INFO ] Computed 19 invariants in 0 ms
Computed 19 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-6168466101996058325.kers
Total runtime 1 ms.
[2026-06-02 17:50:08] [INFO ] Implicit Places using invariants in 78 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 79 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 48/203 places, 72/388 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -16
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 4 rules applied. Total rules applied 4 place count 46 transition count 88
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 0 with 8 rules applied. Total rules applied 12 place count 46 transition count 80
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 13 place count 45 transition count 76
Iterating global reduction 1 with 1 rules applied. Total rules applied 14 place count 45 transition count 76
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 22 place count 45 transition count 68
Drop transitions (Redundant composition of simpler transitions.) removed 7 transitions
Redundant transition composition rules discarded 7 transitions
Iterating global reduction 2 with 7 rules applied. Total rules applied 29 place count 45 transition count 61
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 2 with 1 rules applied. Total rules applied 30 place count 44 transition count 60
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 31 place count 43 transition count 60
Drop transitions (Redundant composition of simpler transitions.) removed 5 transitions
Redundant transition composition rules discarded 5 transitions
Iterating global reduction 3 with 5 rules applied. Total rules applied 36 place count 43 transition count 55
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 3 with 2 rules applied. Total rules applied 38 place count 43 transition count 53
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 40 place count 41 transition count 53
Applied a total of 40 rules in 24 ms. Remains 41 /48 variables (removed 7) and now considering 53/72 (removed 19) transitions.
[2026-06-02 17:50:08] [INFO ] Flow matrix only has 39 transitions (discarded 14 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-1641880608590851044.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-1049583466686793817.kers'
[2026-06-02 17:50:08] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-1641880608590851044.kers, --Pflows, --basisKERS=/tmp/petrispot-output-1049583466686793817.kers]
Normalized transition count is 38 out of 39 initially.
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 38 rows 35 cols 163 entries
Finished phase 1 with 24 SingleSign rule and 0 generalized
[2026-06-02 17:50:08] [INFO ] Computed 17 invariants in 0 ms
Computed 17 P flows in 4 ms.
Exported basis to /tmp/petrispot-output-1049583466686793817.kers
Total runtime 5 ms.
[2026-06-02 17:50:09] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-06-02 17:50:09] [INFO ] Flow matrix only has 39 transitions (discarded 14 similar events)
[2026-06-02 17:50:09] [INFO ] Invariant cache hit.
[2026-06-02 17:50:09] [INFO ] State equation strengthened by 4 read => feed constraints.
[2026-06-02 17:50:09] [INFO ] Implicit Places using invariants and state equation in 89 ms returned []
Implicit Place search using SMT with State Equation took 158 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 41/203 places, 53/388 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 423 ms. Remains : 41/203 places, 53/388 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Stuttering acceptance computed with spot in 79 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : ErlangenMainframeV2-PT-bP12C04-LTLCardinality-02
Product exploration explored 100000 steps with 0 reset in 275 ms.
Product exploration explored 100000 steps with 0 reset in 198 ms.
Computed a total of 2 stabilizing places and 2 stable transitions
Knowledge based reduction with 3 factoid took 68 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
RANDOM walk for 820 steps (16 resets) in 14 ms. (54 steps per ms) remains 0/1 properties
Knowledge based reduction with 3 factoid took 104 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 93 ms :[(NOT p0), (NOT p0)]
Knowledge-based reduction took 281 ms.
Stuttering acceptance computed with spot in 89 ms :[(NOT p0), (NOT p0)]
Support contains 2 out of 41 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 41/41 places, 53/53 transitions.
Applied a total of 0 rules in 3 ms. Remains 41 /41 variables (removed 0) and now considering 53/53 (removed 0) transitions.
[2026-06-02 17:50:10] [INFO ] Flow matrix only has 39 transitions (discarded 14 similar events)
[2026-06-02 17:50:10] [INFO ] Invariant cache hit.
[2026-06-02 17:50:10] [INFO ] Implicit Places using invariants in 101 ms returned []
[2026-06-02 17:50:10] [INFO ] Flow matrix only has 39 transitions (discarded 14 similar events)
[2026-06-02 17:50:10] [INFO ] Invariant cache hit.
[2026-06-02 17:50:10] [INFO ] State equation strengthened by 4 read => feed constraints.
[2026-06-02 17:50:10] [INFO ] Implicit Places using invariants and state equation in 113 ms returned []
Implicit Place search using SMT with State Equation took 217 ms to find 0 implicit places.
[2026-06-02 17:50:10] [INFO ] Redundant transitions in 1 ms returned []
Running 36 sub problems to find dead transitions.
[2026-06-02 17:50:10] [INFO ] Flow matrix only has 39 transitions (discarded 14 similar events)
[2026-06-02 17:50:10] [INFO ] Invariant cache hit.
[2026-06-02 17:50:10] [INFO ] State equation strengthened by 4 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/35 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/35 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 2 (OVERLAPS) 6/41 variables, 14/17 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/41 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 4 (OVERLAPS) 38/79 variables, 41/58 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/79 variables, 4/62 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/79 variables, 0/62 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 7 (OVERLAPS) 0/79 variables, 0/62 constraints. Problems are: Problem set: 0 solved, 36 unsolved
No progress, stopping.
After SMT solving in domain Real declared 79/80 variables, and 62 constraints, problems are : Problem set: 0 solved, 36 unsolved in 1462 ms.
Refiners :[Positive P Invariants (semi-flows): 17/17 constraints, State Equation: 41/41 constraints, ReadFeed: 4/4 constraints, PredecessorRefiner: 36/36 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 36 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/35 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/35 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 2 (OVERLAPS) 6/41 variables, 14/17 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/41 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 4 (OVERLAPS) 38/79 variables, 41/58 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/79 variables, 4/62 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/79 variables, 36/98 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/79 variables, 1/99 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/79 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 36 unsolved
At refinement iteration 9 (OVERLAPS) 0/79 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 36 unsolved
No progress, stopping.
After SMT solving in domain Int declared 79/80 variables, and 99 constraints, problems are : Problem set: 0 solved, 36 unsolved in 1775 ms.
Refiners :[Positive P Invariants (semi-flows): 17/17 constraints, State Equation: 41/41 constraints, ReadFeed: 4/4 constraints, PredecessorRefiner: 36/36 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 3248ms problems are : Problem set: 0 solved, 36 unsolved
Search for dead transitions found 0 dead transitions in 3248ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 3477 ms. Remains : 41/41 places, 53/53 transitions.
Computed a total of 2 stabilizing places and 2 stable transitions
Knowledge based reduction with 3 factoid took 60 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
RANDOM walk for 234 steps (4 resets) in 6 ms. (33 steps per ms) remains 0/1 properties
Knowledge based reduction with 3 factoid took 83 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 104 ms :[(NOT p0), (NOT p0)]
Knowledge-based reduction took 255 ms.
Stuttering acceptance computed with spot in 98 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 84 ms :[(NOT p0), (NOT p0)]
Product exploration explored 100000 steps with 0 reset in 69 ms.
Product exploration explored 100000 steps with 0 reset in 104 ms.
Built C files in :
/tmp/ltsmin7820695356128682795
[2026-06-02 17:50:14] [INFO ] Computing symmetric may disable matrix : 53 transitions.
[2026-06-02 17:50:14] [INFO ] Computation of Complete disable matrix. took 2 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2026-06-02 17:50:14] [INFO ] Computing symmetric may enable matrix : 53 transitions.
[2026-06-02 17:50:14] [INFO ] Computation of Complete enable matrix. took 1 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2026-06-02 17:50:14] [INFO ] Computing Do-Not-Accords matrix : 53 transitions.
[2026-06-02 17:50:14] [INFO ] Computation of Completed DNA matrix. took 1 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2026-06-02 17:50:14] [INFO ] Built C files in 39ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin7820695356128682795
Running compilation step : cd /tmp/ltsmin7820695356128682795;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202604301425/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202604301425/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c'
Compilation finished in 734 ms.
Running link step : cd /tmp/ltsmin7820695356128682795;'gcc' '-shared' '-o' 'gal.so' 'model.o'
Link finished in 75 ms.
Running LTSmin : cd /tmp/ltsmin7820695356128682795;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202604301425/bin/pins2lts-seq-linux64' './gal.so' '-p' '--pins-guards' '--when' '--hoa' '/tmp/stateBased10489492795585592888.hoa' '--buchi-type=spotba'
LTSmin run took 281 ms.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-02 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Treatment of property ErlangenMainframeV2-PT-bP12C04-LTLCardinality-02 finished in 6684 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Support contains 2 out of 203 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 203/203 places, 388/388 transitions.
Graph (trivial) has 174 edges and 203 vertex of which 9 / 203 are part of one of the 4 SCC in 3 ms
Free SCC test removed 5 places
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Reduce places removed 1 places and 1 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 39 transitions
Trivial Post-agglo rules discarded 39 transitions
Performed 39 trivial Post agglomeration. Transition count delta: 39
Iterating post reduction 0 with 39 rules applied. Total rules applied 40 place count 197 transition count 342
Reduce places removed 39 places and 0 transitions.
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 5 transitions
Trivial Post-agglo rules discarded 5 transitions
Performed 5 trivial Post agglomeration. Transition count delta: 5
Iterating post reduction 1 with 47 rules applied. Total rules applied 87 place count 158 transition count 334
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 2 with 5 rules applied. Total rules applied 92 place count 153 transition count 334
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 13 Pre rules applied. Total rules applied 92 place count 153 transition count 321
Deduced a syphon composed of 13 places in 2 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 3 with 26 rules applied. Total rules applied 118 place count 140 transition count 321
Discarding 9 places :
Symmetric choice reduction at 3 with 9 rule applications. Total rules 127 place count 131 transition count 234
Ensure Unique test removed 1 places
Iterating global reduction 3 with 10 rules applied. Total rules applied 137 place count 130 transition count 234
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 143 place count 124 transition count 185
Ensure Unique test removed 4 places
Iterating global reduction 3 with 10 rules applied. Total rules applied 153 place count 120 transition count 185
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 157 place count 116 transition count 155
Iterating global reduction 3 with 4 rules applied. Total rules applied 161 place count 116 transition count 155
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 162 place count 115 transition count 153
Iterating global reduction 3 with 1 rules applied. Total rules applied 163 place count 115 transition count 153
Performed 51 Post agglomeration using F-continuation condition.Transition count delta: 51
Deduced a syphon composed of 51 places in 1 ms
Reduce places removed 51 places and 0 transitions.
Iterating global reduction 3 with 102 rules applied. Total rules applied 265 place count 64 transition count 102
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 3 with 6 rules applied. Total rules applied 271 place count 64 transition count 96
Discarding 3 places :
Symmetric choice reduction at 4 with 3 rule applications. Total rules 274 place count 61 transition count 89
Iterating global reduction 4 with 3 rules applied. Total rules applied 277 place count 61 transition count 89
Performed 9 Post agglomeration using F-continuation condition with reduction of 12 identical transitions.
Deduced a syphon composed of 9 places in 0 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 4 with 18 rules applied. Total rules applied 295 place count 52 transition count 107
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 4 with 12 rules applied. Total rules applied 307 place count 52 transition count 95
Discarding 2 places :
Symmetric choice reduction at 5 with 2 rule applications. Total rules 309 place count 50 transition count 91
Iterating global reduction 5 with 2 rules applied. Total rules applied 311 place count 50 transition count 91
Ensure Unique test removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 5 with 10 rules applied. Total rules applied 321 place count 50 transition count 81
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -13
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 6 with 2 rules applied. Total rules applied 323 place count 49 transition count 94
Drop transitions (Redundant composition of simpler transitions.) removed 22 transitions
Redundant transition composition rules discarded 22 transitions
Iterating global reduction 6 with 22 rules applied. Total rules applied 345 place count 49 transition count 72
Applied a total of 345 rules in 97 ms. Remains 49 /203 variables (removed 154) and now considering 72/388 (removed 316) transitions.
[2026-06-02 17:50:15] [INFO ] Flow matrix only has 57 transitions (discarded 15 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-6491341434583667084.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9625883632071159737.kers'
[2026-06-02 17:50:15] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-6491341434583667084.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9625883632071159737.kers]
Normalized transition count is 56 out of 57 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 56 rows 48 cols 263 entries
Finished phase 1 with 30 SingleSign rule and 0 generalized
[2026-06-02 17:50:15] [INFO ] Computed 19 invariants in 0 ms
Computed 19 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-9625883632071159737.kers
Total runtime 1 ms.
[2026-06-02 17:50:15] [INFO ] Implicit Places using invariants in 106 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 108 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 48/203 places, 72/388 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -14
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 4 rules applied. Total rules applied 4 place count 46 transition count 86
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 0 with 8 rules applied. Total rules applied 12 place count 46 transition count 78
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 13 place count 45 transition count 76
Iterating global reduction 1 with 1 rules applied. Total rules applied 14 place count 45 transition count 76
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 22 place count 45 transition count 68
Drop transitions (Redundant composition of simpler transitions.) removed 7 transitions
Redundant transition composition rules discarded 7 transitions
Iterating global reduction 2 with 7 rules applied. Total rules applied 29 place count 45 transition count 61
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 2 with 1 rules applied. Total rules applied 30 place count 44 transition count 60
Applied a total of 30 rules in 20 ms. Remains 44 /48 variables (removed 4) and now considering 60/72 (removed 12) transitions.
[2026-06-02 17:50:15] [INFO ] Flow matrix only has 44 transitions (discarded 16 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-1562248819098553257.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-5312745782251501037.kers'
[2026-06-02 17:50:15] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-1562248819098553257.kers, --Pflows, --basisKERS=/tmp/petrispot-output-5312745782251501037.kers]
Normalized transition count is 43 out of 44 initially.
Culling duplicate invariants (modulo rational): removing 3 columns.
Culled 3 columns in 0 ms.
// Phase 1: matrix 43 rows 41 cols 182 entries
Finished phase 1 with 26 SingleSign rule and 0 generalized
[2026-06-02 17:50:15] [INFO ] Computed 18 invariants in 0 ms
Computed 18 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-5312745782251501037.kers
Total runtime 1 ms.
[2026-06-02 17:50:15] [INFO ] Implicit Places using invariants in 95 ms returned []
[2026-06-02 17:50:15] [INFO ] Flow matrix only has 44 transitions (discarded 16 similar events)
[2026-06-02 17:50:15] [INFO ] Invariant cache hit.
[2026-06-02 17:50:15] [INFO ] State equation strengthened by 5 read => feed constraints.
[2026-06-02 17:50:15] [INFO ] Implicit Places using invariants and state equation in 108 ms returned []
Implicit Place search using SMT with State Equation took 206 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 44/203 places, 60/388 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 431 ms. Remains : 44/203 places, 60/388 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Stuttering acceptance computed with spot in 53 ms :[(NOT p0)]
Running random walk in product with property : ErlangenMainframeV2-PT-bP12C04-LTLCardinality-10
Product exploration explored 100000 steps with 0 reset in 153 ms.
Stack based approach found an accepted trace after 37 steps with 0 reset with depth 38 and stack size 36 in 1 ms.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-10 FALSE TECHNIQUES STACK_TEST
Treatment of property ErlangenMainframeV2-PT-bP12C04-LTLCardinality-10 finished in 682 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(p0) U X(p1)))'
Support contains 3 out of 203 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 203/203 places, 388/388 transitions.
Discarding 13 places :
Symmetric choice reduction at 0 with 13 rule applications. Total rules 13 place count 190 transition count 297
Iterating global reduction 0 with 13 rules applied. Total rules applied 26 place count 190 transition count 297
Discarding 7 places :
Symmetric choice reduction at 0 with 7 rule applications. Total rules 33 place count 183 transition count 259
Iterating global reduction 0 with 7 rules applied. Total rules applied 40 place count 183 transition count 259
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 43 place count 180 transition count 245
Ensure Unique test removed 3 places
Iterating global reduction 0 with 6 rules applied. Total rules applied 49 place count 177 transition count 245
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 52 place count 174 transition count 217
Iterating global reduction 0 with 3 rules applied. Total rules applied 55 place count 174 transition count 217
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 56 place count 173 transition count 215
Iterating global reduction 0 with 1 rules applied. Total rules applied 57 place count 173 transition count 215
Applied a total of 57 rules in 18 ms. Remains 173 /203 variables (removed 30) and now considering 215/388 (removed 173) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-5967271503177861221.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-2258578214406720793.kers'
[2026-06-02 17:50:16] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-5967271503177861221.kers, --Pflows, --basisKERS=/tmp/petrispot-output-2258578214406720793.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 215 rows 173 cols 670 entries
Finished phase 1 with 150 SingleSign rule and 2 generalized
[2026-06-02 17:50:16] [INFO ] Computed 21 invariants in 1 ms
Computed 21 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-2258578214406720793.kers
Total runtime 3 ms.
[2026-06-02 17:50:16] [INFO ] Implicit Places using invariants in 167 ms returned [81]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 169 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 172/203 places, 215/388 transitions.
Applied a total of 0 rules in 3 ms. Remains 172 /172 variables (removed 0) and now considering 215/215 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 191 ms. Remains : 172/203 places, 215/388 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(p0) U X(p1)))'
Stuttering acceptance computed with spot in 239 ms :[(NOT p1), (NOT p1), (NOT p1), true, (NOT p0)]
Running random walk in product with property : ErlangenMainframeV2-PT-bP12C04-LTLCardinality-11
Product exploration explored 100000 steps with 50000 reset in 250 ms.
Product exploration explored 100000 steps with 50000 reset in 231 ms.
Computed a total of 24 stabilizing places and 24 stable transitions
Computed a total of 24 stabilizing places and 24 stable transitions
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 9 factoid took 16 ms. Proved property starting from automaton with 5 states, 9 edges and 2 AP (stutter sensitive
Knowledge-based reduction took 23 ms.
FORMULA ErlangenMainframeV2-PT-bP12C04-LTLCardinality-11 TRUE TECHNIQUES KNOWLEDGE
Treatment of property ErlangenMainframeV2-PT-bP12C04-LTLCardinality-11 finished in 980 ms.
All properties solved by simple procedures.
Total runtime 114181 ms.

BK_STOP 1780422617123

--------------------
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
+ [[ LTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLCardinality -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
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="ErlangenMainframeV2-PT-bP12C04"
export BK_EXAMINATION="LTLCardinality"
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 2-5973"
echo " Executing tool itstools"
echo " Input is ErlangenMainframeV2-PT-bP12C04, 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 r338-smll-178021499200299"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ErlangenMainframeV2-PT-bP12C04.tgz
mv ErlangenMainframeV2-PT-bP12C04 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.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 '' LTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
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 ;