fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r487-tall-167912704001145
Last Updated
May 14, 2023

About the Execution of LoLa+red for UtilityControlRoom-PT-Z2T4N08

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
268.287 5085.00 11332.00 232.30 TTFFTFTTTTFFFTTF normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r487-tall-167912704001145.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
......................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is UtilityControlRoom-PT-Z2T4N08, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r487-tall-167912704001145
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.3M
-rw-r--r-- 1 mcc users 28K Feb 26 14:36 CTLCardinality.txt
-rw-r--r-- 1 mcc users 150K Feb 26 14:36 CTLCardinality.xml
-rw-r--r-- 1 mcc users 37K Feb 26 14:34 CTLFireability.txt
-rw-r--r-- 1 mcc users 159K Feb 26 14:34 CTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 25 17:25 LTLCardinality.txt
-rw-r--r-- 1 mcc users 45K Feb 25 17:25 LTLCardinality.xml
-rw-r--r-- 1 mcc users 17K Feb 25 17:25 LTLFireability.txt
-rw-r--r-- 1 mcc users 55K Feb 25 17:25 LTLFireability.xml
-rw-r--r-- 1 mcc users 46K Feb 26 14:41 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 243K Feb 26 14:41 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 66K Feb 26 14:40 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 280K Feb 26 14:40 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 3.0K Feb 25 17:25 UpperBounds.txt
-rw-r--r-- 1 mcc users 6.4K Feb 25 17:25 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 8 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 93K Mar 5 18:23 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-00
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-01
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-02
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-03
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-04
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-05
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-06
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-07
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-08
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-09
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-10
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-11
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-12
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-13
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-14
FORMULA_NAME UtilityControlRoom-PT-Z2T4N08-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1679233583972

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=lolaxred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=UtilityControlRoom-PT-Z2T4N08
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-19 13:46:25] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-19 13:46:25] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-19 13:46:25] [INFO ] Load time of PNML (sax parser for PT used): 42 ms
[2023-03-19 13:46:25] [INFO ] Transformed 140 places.
[2023-03-19 13:46:25] [INFO ] Transformed 216 transitions.
[2023-03-19 13:46:25] [INFO ] Parsed PT model containing 140 places and 216 transitions and 680 arcs in 98 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 15 ms.
Ensure Unique test removed 32 transitions
Reduce redundant transitions removed 32 transitions.
Support contains 140 out of 140 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Applied a total of 0 rules in 7 ms. Remains 140 /140 variables (removed 0) and now considering 184/184 (removed 0) transitions.
// Phase 1: matrix 184 rows 140 cols
[2023-03-19 13:46:25] [INFO ] Computed 19 place invariants in 14 ms
[2023-03-19 13:46:25] [INFO ] Implicit Places using invariants in 171 ms returned []
[2023-03-19 13:46:25] [INFO ] Invariant cache hit.
[2023-03-19 13:46:25] [INFO ] Implicit Places using invariants and state equation in 95 ms returned []
Implicit Place search using SMT with State Equation took 288 ms to find 0 implicit places.
[2023-03-19 13:46:25] [INFO ] Invariant cache hit.
[2023-03-19 13:46:25] [INFO ] Dead Transitions using invariants and state equation in 112 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 408 ms. Remains : 140/140 places, 184/184 transitions.
Support contains 140 out of 140 places after structural reductions.
[2023-03-19 13:46:26] [INFO ] Flatten gal took : 33 ms
[2023-03-19 13:46:26] [INFO ] Flatten gal took : 20 ms
[2023-03-19 13:46:26] [INFO ] Input system was already deterministic with 184 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 487 ms. (steps per millisecond=20 ) properties (out of 80) seen :28
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 52) seen :1
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=58 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=58 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 51) seen :0
Running SMT prover for 51 properties.
[2023-03-19 13:46:27] [INFO ] Invariant cache hit.
[2023-03-19 13:46:27] [INFO ] [Real]Absence check using 19 positive place invariants in 6 ms returned sat
[2023-03-19 13:46:27] [INFO ] After 224ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:50
[2023-03-19 13:46:27] [INFO ] [Nat]Absence check using 19 positive place invariants in 6 ms returned sat
[2023-03-19 13:46:27] [INFO ] After 203ms SMT Verify possible using all constraints in natural domain returned unsat :51 sat :0
Fused 51 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 1 ms.
Successfully simplified 51 atomic propositions for a total of 16 simplifications.
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-19 13:46:27] [INFO ] Initial state reduction rules for CTL removed 4 formulas.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 10 ms
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-05 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-04 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 10 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 184 transitions.
Support contains 48 out of 140 places (down from 139) after GAL structural reductions.
FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 0 stabilizing places and 0 stable transitions
Starting structural reductions in LTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Discarding 16 places :
Symmetric choice reduction at 0 with 16 rule applications. Total rules 16 place count 124 transition count 168
Iterating global reduction 0 with 16 rules applied. Total rules applied 32 place count 124 transition count 168
Applied a total of 32 rules in 10 ms. Remains 124 /140 variables (removed 16) and now considering 168/184 (removed 16) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 124/140 places, 168/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 8 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 11 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 168 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Drop transitions removed 32 transitions
Trivial Post-agglo rules discarded 32 transitions
Performed 32 trivial Post agglomeration. Transition count delta: 32
Iterating post reduction 0 with 32 rules applied. Total rules applied 32 place count 140 transition count 152
Reduce places removed 32 places and 0 transitions.
Ensure Unique test removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 1 with 48 rules applied. Total rules applied 80 place count 108 transition count 136
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 80 place count 108 transition count 120
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 112 place count 92 transition count 120
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 113 place count 91 transition count 104
Iterating global reduction 2 with 1 rules applied. Total rules applied 114 place count 91 transition count 104
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 0 ms
Ensure Unique test removed 1 places
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 2 with 17 rules applied. Total rules applied 131 place count 82 transition count 96
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 0 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 2 with 17 rules applied. Total rules applied 148 place count 73 transition count 88
Applied a total of 148 rules in 21 ms. Remains 73 /140 variables (removed 67) and now considering 88/184 (removed 96) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 22 ms. Remains : 73/140 places, 88/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 4 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 4 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 88 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Drop transitions removed 32 transitions
Trivial Post-agglo rules discarded 32 transitions
Performed 32 trivial Post agglomeration. Transition count delta: 32
Iterating post reduction 0 with 32 rules applied. Total rules applied 32 place count 140 transition count 152
Reduce places removed 32 places and 0 transitions.
Ensure Unique test removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 1 with 48 rules applied. Total rules applied 80 place count 108 transition count 136
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 80 place count 108 transition count 120
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 112 place count 92 transition count 120
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 113 place count 91 transition count 104
Iterating global reduction 2 with 1 rules applied. Total rules applied 114 place count 91 transition count 104
Discarding 8 places :
Symmetric choice reduction at 2 with 8 rule applications. Total rules 122 place count 83 transition count 96
Iterating global reduction 2 with 8 rules applied. Total rules applied 130 place count 83 transition count 96
Discarding 8 places :
Symmetric choice reduction at 2 with 8 rule applications. Total rules 138 place count 75 transition count 80
Iterating global reduction 2 with 8 rules applied. Total rules applied 146 place count 75 transition count 80
Discarding 8 places :
Symmetric choice reduction at 2 with 8 rule applications. Total rules 154 place count 67 transition count 72
Iterating global reduction 2 with 8 rules applied. Total rules applied 162 place count 67 transition count 72
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 2 with 8 rules applied. Total rules applied 170 place count 67 transition count 64
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 0 ms
Ensure Unique test removed 1 places
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 3 with 17 rules applied. Total rules applied 187 place count 58 transition count 56
Applied a total of 187 rules in 16 ms. Remains 58 /140 variables (removed 82) and now considering 56/184 (removed 128) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 16 ms. Remains : 58/140 places, 56/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 3 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 3 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 56 transitions.
Starting structural reductions in LTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Discarding 15 places :
Symmetric choice reduction at 0 with 15 rule applications. Total rules 15 place count 125 transition count 169
Iterating global reduction 0 with 15 rules applied. Total rules applied 30 place count 125 transition count 169
Applied a total of 30 rules in 7 ms. Remains 125 /140 variables (removed 15) and now considering 169/184 (removed 15) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 125/140 places, 169/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 7 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 9 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 169 transitions.
Starting structural reductions in LTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Discarding 16 places :
Symmetric choice reduction at 0 with 16 rule applications. Total rules 16 place count 124 transition count 168
Iterating global reduction 0 with 16 rules applied. Total rules applied 32 place count 124 transition count 168
Applied a total of 32 rules in 5 ms. Remains 124 /140 variables (removed 16) and now considering 168/184 (removed 16) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5 ms. Remains : 124/140 places, 168/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 7 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 8 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 168 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Drop transitions removed 30 transitions
Trivial Post-agglo rules discarded 30 transitions
Performed 30 trivial Post agglomeration. Transition count delta: 30
Iterating post reduction 0 with 30 rules applied. Total rules applied 30 place count 140 transition count 154
Reduce places removed 30 places and 0 transitions.
Ensure Unique test removed 15 transitions
Reduce isomorphic transitions removed 15 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 47 rules applied. Total rules applied 77 place count 110 transition count 137
Reduce places removed 2 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 3 rules applied. Total rules applied 80 place count 108 transition count 136
Performed 15 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 15 Pre rules applied. Total rules applied 80 place count 108 transition count 121
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 3 with 30 rules applied. Total rules applied 110 place count 93 transition count 121
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 111 place count 92 transition count 105
Iterating global reduction 3 with 1 rules applied. Total rules applied 112 place count 92 transition count 105
Discarding 8 places :
Symmetric choice reduction at 3 with 8 rule applications. Total rules 120 place count 84 transition count 97
Iterating global reduction 3 with 8 rules applied. Total rules applied 128 place count 84 transition count 97
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 135 place count 77 transition count 83
Iterating global reduction 3 with 7 rules applied. Total rules applied 142 place count 77 transition count 83
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 148 place count 71 transition count 77
Iterating global reduction 3 with 6 rules applied. Total rules applied 154 place count 71 transition count 77
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 3 with 6 rules applied. Total rules applied 160 place count 71 transition count 71
Performed 6 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 6 Pre rules applied. Total rules applied 160 place count 71 transition count 65
Deduced a syphon composed of 6 places in 0 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 4 with 12 rules applied. Total rules applied 172 place count 65 transition count 65
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 0 ms
Ensure Unique test removed 1 places
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 4 with 17 rules applied. Total rules applied 189 place count 56 transition count 57
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
Deduced a syphon composed of 8 places in 0 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 4 with 17 rules applied. Total rules applied 206 place count 47 transition count 49
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
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 222 place count 39 transition count 41
Applied a total of 222 rules in 16 ms. Remains 39 /140 variables (removed 101) and now considering 41/184 (removed 143) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 16 ms. Remains : 39/140 places, 41/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 1 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 1 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 41 transitions.
Starting structural reductions in LTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Discarding 14 places :
Symmetric choice reduction at 0 with 14 rule applications. Total rules 14 place count 126 transition count 170
Iterating global reduction 0 with 14 rules applied. Total rules applied 28 place count 126 transition count 170
Applied a total of 28 rules in 3 ms. Remains 126 /140 variables (removed 14) and now considering 170/184 (removed 14) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 3 ms. Remains : 126/140 places, 170/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 7 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 7 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 170 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 140/140 places, 184/184 transitions.
Drop transitions removed 30 transitions
Trivial Post-agglo rules discarded 30 transitions
Performed 30 trivial Post agglomeration. Transition count delta: 30
Iterating post reduction 0 with 30 rules applied. Total rules applied 30 place count 140 transition count 154
Reduce places removed 30 places and 0 transitions.
Ensure Unique test removed 15 transitions
Reduce isomorphic transitions removed 15 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 47 rules applied. Total rules applied 77 place count 110 transition count 137
Reduce places removed 2 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 3 rules applied. Total rules applied 80 place count 108 transition count 136
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 16 Pre rules applied. Total rules applied 80 place count 108 transition count 120
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 3 with 32 rules applied. Total rules applied 112 place count 92 transition count 120
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 113 place count 91 transition count 104
Iterating global reduction 3 with 1 rules applied. Total rules applied 114 place count 91 transition count 104
Discarding 8 places :
Symmetric choice reduction at 3 with 8 rule applications. Total rules 122 place count 83 transition count 96
Iterating global reduction 3 with 8 rules applied. Total rules applied 130 place count 83 transition count 96
Discarding 8 places :
Symmetric choice reduction at 3 with 8 rule applications. Total rules 138 place count 75 transition count 80
Iterating global reduction 3 with 8 rules applied. Total rules applied 146 place count 75 transition count 80
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 153 place count 68 transition count 73
Iterating global reduction 3 with 7 rules applied. Total rules applied 160 place count 68 transition count 73
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 167 place count 68 transition count 66
Performed 7 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 7 Pre rules applied. Total rules applied 167 place count 68 transition count 59
Deduced a syphon composed of 7 places in 0 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 4 with 14 rules applied. Total rules applied 181 place count 61 transition count 59
Performed 7 Post agglomeration using F-continuation condition.Transition count delta: 7
Deduced a syphon composed of 7 places in 0 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 4 with 14 rules applied. Total rules applied 195 place count 54 transition count 52
Performed 8 Post agglomeration using F-continuation condition.Transition count delta: 8
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 211 place count 46 transition count 44
Applied a total of 211 rules in 15 ms. Remains 46 /140 variables (removed 94) and now considering 44/184 (removed 140) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 15 ms. Remains : 46/140 places, 44/184 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 2 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 2 ms
[2023-03-19 13:46:27] [INFO ] Input system was already deterministic with 44 transitions.
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 7 ms
[2023-03-19 13:46:27] [INFO ] Flatten gal took : 8 ms
[2023-03-19 13:46:27] [INFO ] Export to MCC of 8 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 1 ms.
[2023-03-19 13:46:27] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 140 places, 184 transitions and 552 arcs took 2 ms.
Total runtime 2614 ms.
There are residual formulas that ITS could not solve within timeout
starting LoLA
BK_INPUT UtilityControlRoom-PT-Z2T4N08
BK_EXAMINATION: CTLCardinality
bin directory: /home/mcc/BenchKit/bin//../reducer/bin//../../lola/bin/
current directory: /home/mcc/execution/374

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-00 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-09 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-10 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-13 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-15 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-12 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-06 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA UtilityControlRoom-PT-Z2T4N08-CTLCardinality-01 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

BK_STOP 1679233589057

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -timeout 360 -rebuildPNML
lola: MEM LIMIT 32
lola: MEM LIMIT 5
lola: NET
lola: input: PNML file (--pnmlnet)
lola: reading net from /home/mcc/execution/374/model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file /home/mcc/execution/374/model.pnml
lola: Reading formula.
lola: Using XML format (--xmlformula)
lola: reading XML formula
lola: reading formula from /home/mcc/execution/374/CTLCardinality.xml
lola: rewrite Frontend/Parser/formula_rewrite.k:98
lola: rewrite Frontend/Parser/formula_rewrite.k:129
lola: rewrite Frontend/Parser/formula_rewrite.k:196
lola: rewrite Frontend/Parser/formula_rewrite.k:147
lola: Created skeleton in 0.000000 secs.
lola: NOTDEADLOCKFREE
lola: Created skeleton in 0.000000 secs.
lola: NOTDEADLOCKFREE
lola: Created skeleton in 0.000000 secs.
lola: Created skeleton in 0.000000 secs.
lola: Rule S: 0 transitions removed,0 places removed
lola: Created skeleton in 0.000000 secs.
lola: Created skeleton in 0.000000 secs.
lola: Created skeleton in 0.000000 secs.
lola: LAUNCH INITIAL
lola: LAUNCH task # 1 (type CNST) for 0 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-00
lola: time limit : 0 sec
lola: memory limit: 0 pages
lola: FINISHED task # 1 (type CNST) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-00
lola: result : true
lola: rewrite Frontend/Parser/formula_rewrite.k:715
lola: LAUNCH task # 10 (type EXCL) for 9 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-09
lola: time limit : 514 sec
lola: memory limit: 32 pages
lola: rewrite Frontend/Parser/formula_rewrite.k:813
lola: rewrite Frontend/Parser/formula_rewrite.k:807
lola: rewrite Frontend/Parser/formula_rewrite.k:806
lola: rewrite Frontend/Parser/formula_rewrite.k:808
lola: rewrite Frontend/Parser/formula_rewrite.k:807
lola: rewrite Frontend/Parser/formula_rewrite.k:808
lola: FINISHED task # 10 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-09
lola: result : true
lola: markings : 46
lola: fired transitions : 46
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 13 (type EXCL) for 12 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-10
lola: time limit : 600 sec
lola: memory limit: 32 pages
lola: rewrite Frontend/Parser/formula_rewrite.k:749
lola: rewrite Frontend/Parser/formula_rewrite.k:787
lola: rewrite Frontend/Parser/formula_rewrite.k:806
lola: rewrite Frontend/Parser/formula_rewrite.k:808
lola: rewrite Frontend/Parser/formula_rewrite.k:813
lola: rewrite Frontend/Parser/formula_rewrite.k:811
lola: FINISHED task # 13 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-10
lola: result : false
lola: markings : 1396
lola: fired transitions : 1610
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 19 (type EXCL) for 18 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-13
lola: time limit : 720 sec
lola: memory limit: 32 pages
lola: FINISHED task # 19 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-13
lola: result : true
lola: markings : 44
lola: fired transitions : 44
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 24 (type EXCL) for 21 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-15
lola: time limit : 900 sec
lola: memory limit: 32 pages
lola: FINISHED task # 24 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-15
lola: result : true
lola: markings : 29
lola: fired transitions : 29
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 16 (type EXCL) for 15 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-12
lola: time limit : 1200 sec
lola: memory limit: 32 pages
lola: FINISHED task # 16 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-12
lola: result : false
lola: markings : 54680
lola: fired transitions : 152279
lola: time used : 1.000000
lola: memory pages used : 1
lola: LAUNCH task # 7 (type EXCL) for 6 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-06
lola: time limit : 1799 sec
lola: memory limit: 32 pages
lola: FINISHED task # 7 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-06
lola: result : true
lola: markings : 32
lola: fired transitions : 77
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 4 (type EXCL) for 3 UtilityControlRoom-PT-Z2T4N08-CTLCardinality-01
lola: time limit : 3599 sec
lola: memory limit: 32 pages
lola: FINISHED task # 4 (type EXCL) for UtilityControlRoom-PT-Z2T4N08-CTLCardinality-01
lola: result : true
lola: markings : 23
lola: fired transitions : 47
lola: time used : 0.000000
lola: memory pages used : 1
lola: Portfolio finished: no open formulas

FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-00: INITIAL true preprocessing
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-01: EGEF true CTL model checker
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-06: EGEF true CTL model checker
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-09: EXEG true state space /EXEG
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-10: CTL false CTL model checker
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-12: AFAG false CTL model checker
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-13: CTL true CTL model checker
UtilityControlRoom-PT-Z2T4N08-CTLCardinality-15: F false state space / EG


Time elapsed: 1 secs. Pages in use: 1

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="UtilityControlRoom-PT-Z2T4N08"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="lolaxred"
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 2-5348"
echo " Executing tool lolaxred"
echo " Input is UtilityControlRoom-PT-Z2T4N08, 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 r487-tall-167912704001145"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/UtilityControlRoom-PT-Z2T4N08.tgz
mv UtilityControlRoom-PT-Z2T4N08 execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh

echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '' 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 ;