Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r520-tall-171662338700497.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...........................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is Railroad-PT-050, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r520-tall-171662338700497
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.8M
-rw-r--r-- 1 mcc users 8.9K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 89K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.0K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 57K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.4K Apr 23 07:46 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Apr 23 07:46 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K May 19 07:29 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 19 18:55 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Apr 12 14:03 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 94K Apr 12 14:03 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.9K Apr 12 13:58 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 75K Apr 12 13:58 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Apr 23 07:46 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Apr 23 07:46 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 4 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 1.4M May 18 16:43 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-00
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-01
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-02
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-03
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-04
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-05
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-06
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-07
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-08
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-09
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-10
FORMULA_NAME Railroad-PT-050-CTLCardinality-2024-11
FORMULA_NAME Railroad-PT-050-CTLCardinality-2023-12
FORMULA_NAME Railroad-PT-050-CTLCardinality-2023-13
FORMULA_NAME Railroad-PT-050-CTLCardinality-2023-14
FORMULA_NAME Railroad-PT-050-CTLCardinality-2023-15

=== Now, execution of the tool begins

BK_START 1717261129174

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Railroad-PT-050
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-06-01 16:58:50] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2024-06-01 16:58:50] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-01 16:58:50] [INFO ] Load time of PNML (sax parser for PT used): 179 ms
[2024-06-01 16:58:50] [INFO ] Transformed 518 places.
[2024-06-01 16:58:50] [INFO ] Transformed 2756 transitions.
[2024-06-01 16:58:50] [INFO ] Found NUPN structural information;
[2024-06-01 16:58:50] [INFO ] Parsed PT model containing 518 places and 2756 transitions and 16378 arcs in 288 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 14 ms.
Deduced a syphon composed of 151 places in 30 ms
Reduce places removed 151 places and 50 transitions.
Support contains 84 out of 367 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 367/367 places, 2706/2706 transitions.
Ensure Unique test removed 48 places
Iterating post reduction 0 with 48 rules applied. Total rules applied 48 place count 319 transition count 2706
Applied a total of 48 rules in 68 ms. Remains 319 /367 variables (removed 48) and now considering 2706/2706 (removed 0) transitions.
// Phase 1: matrix 2706 rows 319 cols
[2024-06-01 16:58:50] [INFO ] Invariants computation overflowed in 29 ms
[2024-06-01 16:58:51] [INFO ] Implicit Places using invariants in 525 ms returned []
// Phase 1: matrix 2706 rows 319 cols
[2024-06-01 16:58:51] [INFO ] Invariants computation overflowed in 15 ms
[2024-06-01 16:58:54] [INFO ] Implicit Places using invariants and state equation in 3044 ms returned [2, 10, 12, 15, 21, 22, 24, 30, 31, 32, 41, 143, 144, 149, 150, 151, 154, 155, 157, 162, 163, 165, 170, 171, 174, 177, 179, 236, 239, 243, 253, 254, 256, 260, 272, 277, 279, 281, 282, 284, 285, 288, 298, 308, 309]
Discarding 45 places :
Implicit Place search using SMT with State Equation took 3612 ms to find 45 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 274/367 places, 2706/2706 transitions.
Applied a total of 0 rules in 24 ms. Remains 274 /274 variables (removed 0) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 3719 ms. Remains : 274/367 places, 2706/2706 transitions.
Support contains 84 out of 274 places after structural reductions.
[2024-06-01 16:58:54] [INFO ] Flatten gal took : 225 ms
[2024-06-01 16:58:54] [INFO ] Flatten gal took : 150 ms
[2024-06-01 16:58:55] [INFO ] Input system was already deterministic with 2706 transitions.
Support contains 83 out of 274 places (down from 84) after GAL structural reductions.
Reduction of identical properties reduced properties to check from 60 to 58
RANDOM walk for 40000 steps (8 resets) in 2450 ms. (16 steps per ms) remains 4/58 properties
BEST_FIRST walk for 40004 steps (8 resets) in 146 ms. (272 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 133 ms. (298 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 164 ms. (242 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 160 ms. (248 steps per ms) remains 4/4 properties
// Phase 1: matrix 2706 rows 274 cols
[2024-06-01 16:58:56] [INFO ] Invariants computation overflowed in 10 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/6 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 403/409 variables, 6/12 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/409 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (OVERLAPS) 2405/2814 variables, 153/165 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2814 variables, 153/318 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/2814 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (OVERLAPS) 164/2978 variables, 113/431 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/2978 variables, 113/544 constraints. Problems are: Problem set: 0 solved, 4 unsolved
[2024-06-01 16:58:57] [INFO ] Deduced a trap composed of 3 places in 367 ms of which 11 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/2978 variables, 1/545 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/2978 variables, 0/545 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 11 (OVERLAPS) 2/2980 variables, 2/547 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/2980 variables, 2/549 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/2980 variables, 0/549 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 14 (OVERLAPS) 0/2980 variables, 0/549 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 2980/2980 variables, and 549 constraints, problems are : Problem set: 0 solved, 4 unsolved in 2488 ms.
Refiners :[Domain max(s): 274/274 constraints, State Equation: 274/274 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 1/1 constraints]
Escalating to Integer solving :Problem set: 0 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/6 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 403/409 variables, 6/12 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/409 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (OVERLAPS) 2405/2814 variables, 153/165 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2814 variables, 153/318 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/2814 variables, 4/322 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/2814 variables, 1/323 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/2814 variables, 0/323 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 9 (OVERLAPS) 164/2978 variables, 113/436 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/2978 variables, 113/549 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/2978 variables, 0/549 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 12 (OVERLAPS) 2/2980 variables, 2/551 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/2980 variables, 2/553 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/2980 variables, 0/553 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 15 (OVERLAPS) 0/2980 variables, 0/553 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Int declared 2980/2980 variables, and 553 constraints, problems are : Problem set: 0 solved, 4 unsolved in 2262 ms.
Refiners :[Domain max(s): 274/274 constraints, State Equation: 274/274 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 1/1 constraints]
After SMT, in 4843ms problems are : Problem set: 0 solved, 4 unsolved
Finished Parikh walk after 302 steps, including 1 resets, run visited all 4 properties in 8 ms. (steps per millisecond=37 )
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 2 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 )
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 16 ms.
[2024-06-01 16:59:01] [INFO ] Flatten gal took : 112 ms
[2024-06-01 16:59:01] [INFO ] Flatten gal took : 117 ms
[2024-06-01 16:59:01] [INFO ] Input system was already deterministic with 2706 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 18 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 19 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:01] [INFO ] Flatten gal took : 94 ms
[2024-06-01 16:59:01] [INFO ] Flatten gal took : 111 ms
[2024-06-01 16:59:02] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 15 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 15 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:02] [INFO ] Flatten gal took : 88 ms
[2024-06-01 16:59:02] [INFO ] Flatten gal took : 97 ms
[2024-06-01 16:59:02] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 14 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 14 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:02] [INFO ] Flatten gal took : 89 ms
[2024-06-01 16:59:02] [INFO ] Flatten gal took : 99 ms
[2024-06-01 16:59:03] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 11 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 12 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:03] [INFO ] Flatten gal took : 95 ms
[2024-06-01 16:59:03] [INFO ] Flatten gal took : 88 ms
[2024-06-01 16:59:03] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 270 transition count 2703
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 6 place count 267 transition count 2703
Performed 38 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 38 Pre rules applied. Total rules applied 6 place count 267 transition count 2665
Deduced a syphon composed of 38 places in 3 ms
Reduce places removed 38 places and 0 transitions.
Iterating global reduction 2 with 76 rules applied. Total rules applied 82 place count 229 transition count 2665
Performed 10 Post agglomeration using F-continuation condition.Transition count delta: 10
Deduced a syphon composed of 10 places in 3 ms
Reduce places removed 10 places and 0 transitions.
Iterating global reduction 2 with 20 rules applied. Total rules applied 102 place count 219 transition count 2655
Applied a total of 102 rules in 643 ms. Remains 219 /274 variables (removed 55) and now considering 2655/2706 (removed 51) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 643 ms. Remains : 219/274 places, 2655/2706 transitions.
[2024-06-01 16:59:04] [INFO ] Flatten gal took : 59 ms
[2024-06-01 16:59:04] [INFO ] Flatten gal took : 67 ms
[2024-06-01 16:59:04] [INFO ] Input system was already deterministic with 2655 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 12 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 12 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:04] [INFO ] Flatten gal took : 79 ms
[2024-06-01 16:59:04] [INFO ] Flatten gal took : 86 ms
[2024-06-01 16:59:04] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 12 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 12 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:04] [INFO ] Flatten gal took : 84 ms
[2024-06-01 16:59:04] [INFO ] Flatten gal took : 96 ms
[2024-06-01 16:59:05] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 270 transition count 2705
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 269 transition count 2705
Performed 37 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 37 Pre rules applied. Total rules applied 2 place count 269 transition count 2668
Deduced a syphon composed of 37 places in 4 ms
Reduce places removed 37 places and 0 transitions.
Iterating global reduction 2 with 74 rules applied. Total rules applied 76 place count 232 transition count 2668
Performed 7 Post agglomeration using F-continuation condition.Transition count delta: 7
Deduced a syphon composed of 7 places in 3 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 2 with 14 rules applied. Total rules applied 90 place count 225 transition count 2661
Applied a total of 90 rules in 570 ms. Remains 225 /274 variables (removed 49) and now considering 2661/2706 (removed 45) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 570 ms. Remains : 225/274 places, 2661/2706 transitions.
[2024-06-01 16:59:05] [INFO ] Flatten gal took : 78 ms
[2024-06-01 16:59:05] [INFO ] Flatten gal took : 87 ms
[2024-06-01 16:59:06] [INFO ] Input system was already deterministic with 2661 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 10 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:06] [INFO ] Flatten gal took : 81 ms
[2024-06-01 16:59:06] [INFO ] Flatten gal took : 87 ms
[2024-06-01 16:59:06] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 10 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:06] [INFO ] Flatten gal took : 78 ms
[2024-06-01 16:59:06] [INFO ] Flatten gal took : 87 ms
[2024-06-01 16:59:06] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 270 transition count 2703
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 6 place count 267 transition count 2703
Performed 39 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 39 Pre rules applied. Total rules applied 6 place count 267 transition count 2664
Deduced a syphon composed of 39 places in 3 ms
Reduce places removed 39 places and 0 transitions.
Iterating global reduction 2 with 78 rules applied. Total rules applied 84 place count 228 transition count 2664
Performed 11 Post agglomeration using F-continuation condition.Transition count delta: 11
Deduced a syphon composed of 11 places in 3 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 2 with 22 rules applied. Total rules applied 106 place count 217 transition count 2653
Applied a total of 106 rules in 506 ms. Remains 217 /274 variables (removed 57) and now considering 2653/2706 (removed 53) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 506 ms. Remains : 217/274 places, 2653/2706 transitions.
[2024-06-01 16:59:07] [INFO ] Flatten gal took : 58 ms
[2024-06-01 16:59:07] [INFO ] Flatten gal took : 65 ms
[2024-06-01 16:59:07] [INFO ] Input system was already deterministic with 2653 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 270 transition count 2703
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 6 place count 267 transition count 2703
Performed 41 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 41 Pre rules applied. Total rules applied 6 place count 267 transition count 2662
Deduced a syphon composed of 41 places in 3 ms
Reduce places removed 41 places and 0 transitions.
Iterating global reduction 2 with 82 rules applied. Total rules applied 88 place count 226 transition count 2662
Performed 11 Post agglomeration using F-continuation condition.Transition count delta: 11
Deduced a syphon composed of 11 places in 3 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 2 with 22 rules applied. Total rules applied 110 place count 215 transition count 2651
Applied a total of 110 rules in 535 ms. Remains 215 /274 variables (removed 59) and now considering 2651/2706 (removed 55) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 535 ms. Remains : 215/274 places, 2651/2706 transitions.
[2024-06-01 16:59:08] [INFO ] Flatten gal took : 59 ms
[2024-06-01 16:59:08] [INFO ] Flatten gal took : 78 ms
[2024-06-01 16:59:08] [INFO ] Input system was already deterministic with 2651 transitions.
RANDOM walk for 40000 steps (8 resets) in 659 ms. (60 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 119 ms. (333 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 646033 steps, run timeout after 3001 ms. (steps per millisecond=215 ) properties seen :0 out of 1
Probabilistic random walk after 646033 steps, saw 555393 distinct states, run finished after 3004 ms. (steps per millisecond=215 ) properties seen :0
// Phase 1: matrix 2651 rows 215 cols
[2024-06-01 16:59:11] [INFO ] Invariants computation overflowed in 13 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/1 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 102/103 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/103 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 2653/2756 variables, 104/106 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2756 variables, 104/210 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/2756 variables, 0/210 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 110/2866 variables, 110/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/2866 variables, 110/430 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/2866 variables, 0/430 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/2866 variables, 0/430 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 2866/2866 variables, and 430 constraints, problems are : Problem set: 0 solved, 1 unsolved in 489 ms.
Refiners :[Domain max(s): 215/215 constraints, State Equation: 215/215 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/1 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 102/103 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/103 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 2653/2756 variables, 104/106 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2756 variables, 104/210 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/2756 variables, 0/210 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 110/2866 variables, 110/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/2866 variables, 110/430 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/2866 variables, 1/431 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/2866 variables, 0/431 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/2866 variables, 0/431 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 2866/2866 variables, and 431 constraints, problems are : Problem set: 0 solved, 1 unsolved in 812 ms.
Refiners :[Domain max(s): 215/215 constraints, State Equation: 215/215 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 1338ms problems are : Problem set: 0 solved, 1 unsolved
Finished Parikh walk after 92 steps, including 0 resets, run visited all 1 properties in 6 ms. (steps per millisecond=15 )
FORMULA Railroad-PT-050-CTLCardinality-2024-11 TRUE TECHNIQUES PARIKH_WALK
Parikh walk visited 1 properties in 7 ms.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 22 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 22 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:13] [INFO ] Flatten gal took : 86 ms
[2024-06-01 16:59:13] [INFO ] Flatten gal took : 99 ms
[2024-06-01 16:59:13] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in LTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 270 transition count 2706
Applied a total of 4 rules in 10 ms. Remains 270 /274 variables (removed 4) and now considering 2706/2706 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 270/274 places, 2706/2706 transitions.
[2024-06-01 16:59:13] [INFO ] Flatten gal took : 80 ms
[2024-06-01 16:59:13] [INFO ] Flatten gal took : 90 ms
[2024-06-01 16:59:13] [INFO ] Input system was already deterministic with 2706 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 270 transition count 2703
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 6 place count 267 transition count 2703
Performed 39 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 39 Pre rules applied. Total rules applied 6 place count 267 transition count 2664
Deduced a syphon composed of 39 places in 3 ms
Reduce places removed 39 places and 0 transitions.
Iterating global reduction 2 with 78 rules applied. Total rules applied 84 place count 228 transition count 2664
Performed 10 Post agglomeration using F-continuation condition.Transition count delta: 10
Deduced a syphon composed of 10 places in 3 ms
Reduce places removed 10 places and 0 transitions.
Iterating global reduction 2 with 20 rules applied. Total rules applied 104 place count 218 transition count 2654
Applied a total of 104 rules in 510 ms. Remains 218 /274 variables (removed 56) and now considering 2654/2706 (removed 52) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 511 ms. Remains : 218/274 places, 2654/2706 transitions.
[2024-06-01 16:59:14] [INFO ] Flatten gal took : 76 ms
[2024-06-01 16:59:14] [INFO ] Flatten gal took : 66 ms
[2024-06-01 16:59:14] [INFO ] Input system was already deterministic with 2654 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 274/274 places, 2706/2706 transitions.
Ensure Unique test removed 4 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 270 transition count 2703
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 1 with 3 rules applied. Total rules applied 6 place count 267 transition count 2703
Performed 40 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 40 Pre rules applied. Total rules applied 6 place count 267 transition count 2663
Deduced a syphon composed of 40 places in 3 ms
Reduce places removed 40 places and 0 transitions.
Iterating global reduction 2 with 80 rules applied. Total rules applied 86 place count 227 transition count 2663
Performed 11 Post agglomeration using F-continuation condition.Transition count delta: 11
Deduced a syphon composed of 11 places in 3 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 2 with 22 rules applied. Total rules applied 108 place count 216 transition count 2652
Applied a total of 108 rules in 519 ms. Remains 216 /274 variables (removed 58) and now considering 2652/2706 (removed 54) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 519 ms. Remains : 216/274 places, 2652/2706 transitions.
[2024-06-01 16:59:15] [INFO ] Flatten gal took : 60 ms
[2024-06-01 16:59:15] [INFO ] Flatten gal took : 70 ms
[2024-06-01 16:59:15] [INFO ] Input system was already deterministic with 2652 transitions.
[2024-06-01 16:59:15] [INFO ] Flatten gal took : 95 ms
[2024-06-01 16:59:15] [INFO ] Flatten gal took : 92 ms
[2024-06-01 16:59:15] [INFO ] Export to MCC of 15 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 3 ms.
[2024-06-01 16:59:15] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 274 places, 2706 transitions and 15840 arcs took 14 ms.
Total runtime 25434 ms.
There are residual formulas that ITS could not solve within timeout
Usage: pnml2lts-sym [-gvqh] [--order=]
[--mu-opt] [--saturation=]
[--sat-granularity=] [--save-sat-levels]
[--guidance=] [-d|--deadlock]
[--action=] [-i|--invariant=STRING] [-n|--no-exit]
[--trace=] [--type=]
[--mu=.mu] [--ctl-star=.ctl]
[--ctl=.ctl] [--ltl=.ltl] [--dot=STRING]
[--save-levels=STRING] [--pg-solve] [--attr=]
[--saturating-attractor] [--write-strategy=.spg]
[--check-strategy] [--interactive-play] [--player]
[--pg-write=.spg] [--no-matrix] [--noack=<1|2>]
[--edge-label=] [--labels] [-m|--matrix]
[--mucalc=.mcf|] [-c|--cache]
[--allow-undefined-edges] [--allow-undefined-values]
[-p|--por= (default: heur)]
[--weak=[valmari] (default: uses stronger left-commutativity)]
[--leap] [-r|--regroup=<(T,)+>] [--sloan-w1=] [--sloan-w2=]
[--cw-max-cols=] [--cw-max-rows=] [--col-ins=<(C.C',)+>]
[--mh-timeout=] [--row-perm=<(R,)+>] [--col-perm=<(C,)+>]
[--graph-metrics] [--regroup-exit] [--regroup-time]
[-g|--pins-guards] [--vset=] [--ldd32-step=]
[--ldd32-cache=] [--ldd-step=] [--ldd-cache=]
[--cache-ratio=] [--max-increase=]
[--min-free-nodes=] [--fdd-bits=]
[--fdd-reorder=]
[--vset-cache-diff=] [--no-soundness-check] [--precise]
[--next-union] [--peak-nodes] [--maxsum=]
[--block-size=] [--cluster-size=] [-v] [-q]
[--debug=] [--stats] [--where] [--when]
[--timeout=INT] [--version] [-h|--help] [--usage]
[OPTIONS] []
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-00
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-01
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-02
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-03
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-04
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-05
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-06
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-07
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-08
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-09
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2024-10
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2023-12
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2023-13
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2023-14
Could not compute solution for formula : Railroad-PT-050-CTLCardinality-2023-15

BK_STOP 1717261156051

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -timeout 360 -rebuildPNML
mcc2024
ctl formula name Railroad-PT-050-CTLCardinality-2024-00
ctl formula formula --ctl=/tmp/533/ctl_0_
ctl formula name Railroad-PT-050-CTLCardinality-2024-01
ctl formula formula --ctl=/tmp/533/ctl_1_
ctl formula name Railroad-PT-050-CTLCardinality-2024-02
ctl formula formula --ctl=/tmp/533/ctl_2_
ctl formula name Railroad-PT-050-CTLCardinality-2024-03
ctl formula formula --ctl=/tmp/533/ctl_3_
ctl formula name Railroad-PT-050-CTLCardinality-2024-04
ctl formula formula --ctl=/tmp/533/ctl_4_
ctl formula name Railroad-PT-050-CTLCardinality-2024-05
ctl formula formula --ctl=/tmp/533/ctl_5_
ctl formula name Railroad-PT-050-CTLCardinality-2024-06
ctl formula formula --ctl=/tmp/533/ctl_6_
ctl formula name Railroad-PT-050-CTLCardinality-2024-07
ctl formula formula --ctl=/tmp/533/ctl_7_
ctl formula name Railroad-PT-050-CTLCardinality-2024-08
ctl formula formula --ctl=/tmp/533/ctl_8_
ctl formula name Railroad-PT-050-CTLCardinality-2024-09
ctl formula formula --ctl=/tmp/533/ctl_9_
ctl formula name Railroad-PT-050-CTLCardinality-2024-10
ctl formula formula --ctl=/tmp/533/ctl_10_
ctl formula name Railroad-PT-050-CTLCardinality-2023-12
ctl formula formula --ctl=/tmp/533/ctl_11_
ctl formula name Railroad-PT-050-CTLCardinality-2023-13
ctl formula formula --ctl=/tmp/533/ctl_12_
ctl formula name Railroad-PT-050-CTLCardinality-2023-14
ctl formula formula --ctl=/tmp/533/ctl_13_
ctl formula name Railroad-PT-050-CTLCardinality-2023-15
ctl formula formula --ctl=/tmp/533/ctl_14_
pnml2lts-sym, ** error **: unknown vector set implementation lddmc

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="Railroad-PT-050"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="ltsminxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5568"
echo " Executing tool ltsminxred"
echo " Input is Railroad-PT-050, 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 r520-tall-171662338700497"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Railroad-PT-050.tgz
mv Railroad-PT-050 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 ;