fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r523-tall-167987248000429
Last Updated
May 14, 2023

About the Execution of Smart+red for PGCD-COL-D05N025

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
16225.831 173578.00 64805.00 35523.50 156 156 156 154 154 156 156 156 154 156 156 156 156 156 156 ? 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.r523-tall-167987248000429.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 smartxred
Input is PGCD-COL-D05N025, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r523-tall-167987248000429
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 412K
-rw-r--r-- 1 mcc users 7.7K Mar 23 15:23 CTLCardinality.txt
-rw-r--r-- 1 mcc users 87K Mar 23 15:23 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.9K Mar 23 15:20 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Mar 23 15:20 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Apr 7 12:02 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Apr 7 12:02 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Apr 7 12:02 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 7 12:02 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Mar 26 22:42 NewModel
-rw-r--r-- 1 mcc users 8.8K Mar 23 15:25 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 91K Mar 23 15:25 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.3K Mar 23 15:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 54K Mar 23 15:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 7 12:02 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 7 12:02 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 equiv_pt
-rw-r--r-- 1 mcc users 8 Mar 26 22:42 instance
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 iscolored
-rw-r--r-- 1 mcc users 11K Mar 31 16:48 model.pnml

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

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

The expected result is a vector of positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-00
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-01
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-02
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-03
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-04
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-05
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-06
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-07
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-08
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-09
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-10
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-11
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-12
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-13
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-14
FORMULA_NAME PGCD-COL-D05N025-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1680937934047

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=smartxred
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=PGCD-COL-D05N025
Applying reductions before tool smart
Invoking reducer
Running Version 202304061127
[2023-04-08 07:12:15] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -timeout, 360, -rebuildPNML]
[2023-04-08 07:12:15] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-04-08 07:12:15] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-04-08 07:12:15] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-04-08 07:12:16] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 580 ms
[2023-04-08 07:12:16] [INFO ] Imported 3 HL places and 3 HL transitions for a total of 18 PT places and 18.0 transition bindings in 16 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 6 ms.
[2023-04-08 07:12:16] [INFO ] Built PT skeleton of HLPN with 3 places and 3 transitions 14 arcs in 4 ms.
[2023-04-08 07:12:16] [INFO ] Skeletonized 16 HLPN properties in 0 ms.
// Phase 1: matrix 3 rows 3 cols
[2023-04-08 07:12:16] [INFO ] Computed 2 invariants in 5 ms
[2023-04-08 07:12:16] [INFO ] Invariant cache hit.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 4 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 4 ms. Result :sat
Minimization took 6 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 2 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 3 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:16] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 1 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 4 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 3 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 3 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:16] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 3 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 3 ms. Result :sat
Minimization took 1 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 2 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 3 ms. Result :sat
Minimization took 3 ms.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2023-04-08 07:12:16] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:16] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:16] [INFO ] [Nat]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:16] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:16] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 2 ms.
Current structural bounds on expressions (after SMT) : [156, 156, 156, 156, 156, 156, 156, 156, 156, 156, 156, 156, 156, 156, 156, 156]
Arc [2:1*[(MOD (ADD $x 1) 6)]] contains successor/predecessor on variables of sort CD
[2023-04-08 07:12:16] [INFO ] Unfolded HLPN to a Petri net with 18 places and 18 transitions 84 arcs in 6 ms.
[2023-04-08 07:12:16] [INFO ] Unfolded 16 HLPN properties in 0 ms.
Incomplete random walk after 10023 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=385 ) properties (out of 16) seen :1324
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=714 ) properties (out of 16) seen :2472
FORMULA PGCD-COL-D05N025-UpperBounds-14 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-13 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-12 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-11 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-10 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-09 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-07 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-06 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-05 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-02 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-01 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA PGCD-COL-D05N025-UpperBounds-00 156 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=769 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=833 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=1000 ) properties (out of 4) seen :616
// Phase 1: matrix 18 rows 18 cols
[2023-04-08 07:12:17] [INFO ] Computed 7 invariants in 6 ms
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2023-04-08 07:12:17] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-04-08 07:12:17] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:17] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:17] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 8 ms.
[2023-04-08 07:12:17] [INFO ] Added : 1 causal constraints over 1 iterations in 16 ms. Result :sat
Minimization took 8 ms.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using state equation in 15 ms returned sat
[2023-04-08 07:12:17] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using state equation in 12 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 3 ms.
[2023-04-08 07:12:17] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 6 ms.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2023-04-08 07:12:17] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 6 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:17] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 9 ms.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 0 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2023-04-08 07:12:17] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:17] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2023-04-08 07:12:17] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:17] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 4 ms.
[2023-04-08 07:12:17] [INFO ] Added : 1 causal constraints over 1 iterations in 19 ms. Result :sat
Minimization took 6 ms.
Current structural bounds on expressions (after SMT) : [156, 156, 156, 156] Max seen :[154, 154, 154, 154]
Support contains 6 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 18/18 transitions.
Applied a total of 0 rules in 8 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:17] [INFO ] Invariant cache hit.
[2023-04-08 07:12:17] [INFO ] Dead Transitions using invariants and state equation in 38 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 48 ms. Remains : 18/18 places, 18/18 transitions.
[2023-04-08 07:12:17] [INFO ] Invariant cache hit.
Incomplete random walk after 1000028 steps, including 2 resets, run finished after 280 ms. (steps per millisecond=3571 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 404 ms. (steps per millisecond=2475 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000000 steps, including 2 resets, run finished after 403 ms. (steps per millisecond=2481 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 360 ms. (steps per millisecond=2777 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 359 ms. (steps per millisecond=2785 ) properties (out of 4) seen :616
[2023-04-08 07:12:19] [INFO ] Invariant cache hit.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using state equation in 14 ms returned sat
[2023-04-08 07:12:19] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 7 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-04-08 07:12:19] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:19] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 4 ms.
[2023-04-08 07:12:19] [INFO ] Added : 1 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 5 ms.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:19] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:19] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:19] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 2 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:19] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using 2 positive and 5 generalized place invariants in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2023-04-08 07:12:19] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using 2 positive and 5 generalized place invariants in 0 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:19] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:19] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:19] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:19] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : [156, 156, 156, 156] Max seen :[154, 154, 154, 154]
Support contains 6 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 18/18 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:19] [INFO ] Invariant cache hit.
[2023-04-08 07:12:19] [INFO ] Implicit Places using invariants in 36 ms returned [12, 13, 14, 15, 16, 17]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 39 ms to find 6 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 12/18 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 41 ms. Remains : 12/18 places, 18/18 transitions.
// Phase 1: matrix 18 rows 12 cols
[2023-04-08 07:12:19] [INFO ] Computed 1 invariants in 1 ms
Incomplete random walk after 1000003 steps, including 2 resets, run finished after 196 ms. (steps per millisecond=5102 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000000 steps, including 2 resets, run finished after 331 ms. (steps per millisecond=3021 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 350 ms. (steps per millisecond=2857 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 350 ms. (steps per millisecond=2857 ) properties (out of 4) seen :616
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 346 ms. (steps per millisecond=2890 ) properties (out of 4) seen :616
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using 1 positive place invariants in 14 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2023-04-08 07:12:21] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:21] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:21] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:21] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 6 ms.
[2023-04-08 07:12:21] [INFO ] Added : 1 causal constraints over 1 iterations in 17 ms. Result :sat
Minimization took 5 ms.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:21] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Added 6 Read/Feed constraints in 0 ms returned sat
[2023-04-08 07:12:21] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 0 ms.
[2023-04-08 07:12:21] [INFO ] Added : 1 causal constraints over 1 iterations in 15 ms. Result :sat
Minimization took 6 ms.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:21] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Added 6 Read/Feed constraints in 7 ms returned sat
[2023-04-08 07:12:21] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 2 ms.
[2023-04-08 07:12:21] [INFO ] Added : 1 causal constraints over 1 iterations in 14 ms. Result :sat
Minimization took 6 ms.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2023-04-08 07:12:21] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:21] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:21] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 7 ms.
Current structural bounds on expressions (after SMT) : [156, 156, 156, 156] Max seen :[154, 154, 154, 154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 12/12 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
[2023-04-08 07:12:21] [INFO ] Implicit Places using invariants in 17 ms returned []
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
[2023-04-08 07:12:21] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:21] [INFO ] Implicit Places using invariants and state equation in 23 ms returned []
Implicit Place search using SMT with State Equation took 41 ms to find 0 implicit places.
[2023-04-08 07:12:21] [INFO ] Redundant transitions in 0 ms returned []
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
[2023-04-08 07:12:21] [INFO ] Dead Transitions using invariants and state equation in 41 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 92 ms. Remains : 12/12 places, 18/18 transitions.
Starting property specific reduction for PGCD-COL-D05N025-UpperBounds-03
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
Incomplete random walk after 10015 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2503 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :154
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:21] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:21] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:21] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:21] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:21] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:21] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:21] [INFO ] Added : 1 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
[2023-04-08 07:12:21] [INFO ] Dead Transitions using invariants and state equation in 44 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 48 ms. Remains : 12/12 places, 18/18 transitions.
[2023-04-08 07:12:21] [INFO ] Invariant cache hit.
Incomplete random walk after 1000002 steps, including 2 resets, run finished after 180 ms. (steps per millisecond=5555 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 1000000 steps, including 2 resets, run finished after 298 ms. (steps per millisecond=3355 ) properties (out of 1) seen :154
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
[2023-04-08 07:12:22] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:22] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:22] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:22] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:22] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:22] [INFO ] [Nat]Absence check using state equation in 17 ms returned sat
[2023-04-08 07:12:22] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:22] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:22] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 2 ms.
[2023-04-08 07:12:22] [INFO ] Added : 1 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 6 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 12/12 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
[2023-04-08 07:12:22] [INFO ] Implicit Places using invariants in 21 ms returned []
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
[2023-04-08 07:12:22] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:22] [INFO ] Implicit Places using invariants and state equation in 21 ms returned []
Implicit Place search using SMT with State Equation took 56 ms to find 0 implicit places.
[2023-04-08 07:12:22] [INFO ] Redundant transitions in 0 ms returned []
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
[2023-04-08 07:12:22] [INFO ] Dead Transitions using invariants and state equation in 24 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 86 ms. Remains : 12/12 places, 18/18 transitions.
Ending property specific reduction for PGCD-COL-D05N025-UpperBounds-03 in 797 ms.
Starting property specific reduction for PGCD-COL-D05N025-UpperBounds-04
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
Incomplete random walk after 10014 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=3338 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :154
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
[2023-04-08 07:12:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:22] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:22] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2023-04-08 07:12:22] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:22] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:22] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2023-04-08 07:12:22] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:22] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:22] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:22] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 6 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
[2023-04-08 07:12:22] [INFO ] Dead Transitions using invariants and state equation in 22 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23 ms. Remains : 12/12 places, 18/18 transitions.
[2023-04-08 07:12:22] [INFO ] Invariant cache hit.
Incomplete random walk after 1000018 steps, including 2 resets, run finished after 174 ms. (steps per millisecond=5747 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 300 ms. (steps per millisecond=3333 ) properties (out of 1) seen :154
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:23] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:23] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:23] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:23] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:23] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:23] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:23] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:23] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 2 ms.
[2023-04-08 07:12:23] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 12/12 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] Implicit Places using invariants in 23 ms returned []
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:23] [INFO ] Implicit Places using invariants and state equation in 20 ms returned []
Implicit Place search using SMT with State Equation took 48 ms to find 0 implicit places.
[2023-04-08 07:12:23] [INFO ] Redundant transitions in 0 ms returned []
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] Dead Transitions using invariants and state equation in 19 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 81 ms. Remains : 12/12 places, 18/18 transitions.
Ending property specific reduction for PGCD-COL-D05N025-UpperBounds-04 in 749 ms.
Starting property specific reduction for PGCD-COL-D05N025-UpperBounds-08
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
Incomplete random walk after 10006 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2501 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :154
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:23] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:23] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:23] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:23] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:23] [INFO ] [Nat]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:23] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:23] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:23] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:23] [INFO ] Added : 1 causal constraints over 1 iterations in 39 ms. Result :sat
Minimization took 6 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] Dead Transitions using invariants and state equation in 23 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29 ms. Remains : 12/12 places, 18/18 transitions.
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
Incomplete random walk after 1000009 steps, including 2 resets, run finished after 181 ms. (steps per millisecond=5524 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 282 ms. (steps per millisecond=3546 ) properties (out of 1) seen :154
[2023-04-08 07:12:23] [INFO ] Invariant cache hit.
[2023-04-08 07:12:23] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:23] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:23] [INFO ] [Real]Absence check using state equation in 15 ms returned sat
[2023-04-08 07:12:23] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:23] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:23] [INFO ] [Nat]Absence check using state equation in 3 ms returned sat
[2023-04-08 07:12:23] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:23] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2023-04-08 07:12:24] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 9 ms.
[2023-04-08 07:12:24] [INFO ] Added : 1 causal constraints over 1 iterations in 17 ms. Result :sat
Minimization took 37 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 12/12 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] Implicit Places using invariants in 16 ms returned []
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:24] [INFO ] Implicit Places using invariants and state equation in 26 ms returned []
Implicit Place search using SMT with State Equation took 43 ms to find 0 implicit places.
[2023-04-08 07:12:24] [INFO ] Redundant transitions in 0 ms returned []
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] Dead Transitions using invariants and state equation in 42 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 95 ms. Remains : 12/12 places, 18/18 transitions.
Ending property specific reduction for PGCD-COL-D05N025-UpperBounds-08 in 856 ms.
Starting property specific reduction for PGCD-COL-D05N025-UpperBounds-15
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
Incomplete random walk after 10004 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=3334 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :154
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-08 07:12:24] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:24] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2023-04-08 07:12:24] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:24] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:24] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:24] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:24] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2023-04-08 07:12:24] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:24] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] Dead Transitions using invariants and state equation in 20 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 12/12 places, 18/18 transitions.
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
Incomplete random walk after 1000001 steps, including 2 resets, run finished after 182 ms. (steps per millisecond=5494 ) properties (out of 1) seen :154
Incomplete Best-First random walk after 1000000 steps, including 2 resets, run finished after 291 ms. (steps per millisecond=3436 ) properties (out of 1) seen :154
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:24] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:24] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-04-08 07:12:24] [INFO ] Solution in real domain found non-integer solution.
[2023-04-08 07:12:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-04-08 07:12:24] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-04-08 07:12:24] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2023-04-08 07:12:24] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:24] [INFO ] [Nat]Added 6 Read/Feed constraints in 0 ms returned sat
[2023-04-08 07:12:24] [INFO ] Computed and/alt/rep : 6/12/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-04-08 07:12:24] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : [936] Max seen :[154]
Support contains 6 out of 12 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 12/12 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12/12 places, 18/18 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] Implicit Places using invariants in 15 ms returned []
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] State equation strengthened by 6 read => feed constraints.
[2023-04-08 07:12:24] [INFO ] Implicit Places using invariants and state equation in 21 ms returned []
Implicit Place search using SMT with State Equation took 44 ms to find 0 implicit places.
[2023-04-08 07:12:24] [INFO ] Redundant transitions in 0 ms returned []
[2023-04-08 07:12:24] [INFO ] Invariant cache hit.
[2023-04-08 07:12:24] [INFO ] Dead Transitions using invariants and state equation in 19 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 75 ms. Remains : 12/12 places, 18/18 transitions.
Ending property specific reduction for PGCD-COL-D05N025-UpperBounds-15 in 841 ms.
[2023-04-08 07:12:25] [INFO ] Flatten gal took : 13 ms
[2023-04-08 07:12:25] [INFO ] Export to MCC of 4 properties in file /home/mcc/execution/UpperBounds.sr.xml took 2 ms.
[2023-04-08 07:12:25] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 12 places, 18 transitions and 60 arcs took 0 ms.
Total runtime 9566 ms.
There are residual formulas that ITS could not solve within timeout
======================================================
========== this is Smart for the MCC'2018 ============
======================================================
Running PGCD (COL), instance D05N025
Examination UpperBounds
Parser /home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//parser/UpperBoundParse.jar
Model checker /home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//upper_bound//smart

PNML FILE: model.pnml
Petri model created: 12 places, 18 transitions, 60 arcs.
Final Score: 50.056
Took : 1 seconds
Bounds file is: UpperBounds.xml
FORMULA PGCD-COL-D05N025-UpperBounds-03 154 TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA PGCD-COL-D05N025-UpperBounds-04 154 TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS
FORMULA PGCD-COL-D05N025-UpperBounds-08 154 TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS

BK_STOP 1680938107625

--------------------
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_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -timeout 360 -rebuildPNML
/home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//smart.sh: line 116: 784 Killed ${SMART}/smart ${INPUT_SM}

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="PGCD-COL-D05N025"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="smartxred"
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 smartxred"
echo " Input is PGCD-COL-D05N025, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r523-tall-167987248000429"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PGCD-COL-D05N025.tgz
mv PGCD-COL-D05N025 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;