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.r074-smll-167814400400553.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)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool marciexred
Input is CloudOpsManagement-PT-10240by05120, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r074-smll-167814400400553
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 476K
-rw-r--r-- 1 mcc users 11K Feb 26 01:02 CTLCardinality.txt
-rw-r--r-- 1 mcc users 96K Feb 26 01:02 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Feb 26 00:59 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Feb 26 00:59 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.4K Feb 25 15:46 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 15:46 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Feb 25 15:46 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:46 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Feb 26 01:03 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 92K Feb 26 01:03 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Feb 26 01:02 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 80K Feb 26 01:02 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Feb 25 15:46 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Feb 25 15:46 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 13 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 17K Mar 5 18:22 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 CloudOpsManagement-PT-10240by05120-CTLCardinality-00
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-01
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-02
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-03
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-04
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-05
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-06
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-07
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-08
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-09
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-10
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-11
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-12
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-13
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-14
FORMULA_NAME CloudOpsManagement-PT-10240by05120-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1678537815017

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=marciexred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=CloudOpsManagement-PT-10240by05120
Applying reductions before tool marcie
Invoking reducer
Running Version 202303021504
[2023-03-11 12:30:17] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-11 12:30:17] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-11 12:30:18] [INFO ] Load time of PNML (sax parser for PT used): 35 ms
[2023-03-11 12:30:18] [INFO ] Transformed 27 places.
[2023-03-11 12:30:18] [INFO ] Transformed 29 transitions.
[2023-03-11 12:30:18] [INFO ] Parsed PT model containing 27 places and 29 transitions and 94 arcs in 146 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 25 ms.
Support contains 27 out of 27 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 21 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
// Phase 1: matrix 29 rows 27 cols
[2023-03-11 12:30:18] [INFO ] Computed 11 place invariants in 11 ms
[2023-03-11 12:30:18] [INFO ] Implicit Places using invariants in 228 ms returned []
[2023-03-11 12:30:18] [INFO ] Invariant cache hit.
[2023-03-11 12:30:18] [INFO ] State equation strengthened by 3 read => feed constraints.
[2023-03-11 12:30:18] [INFO ] Implicit Places using invariants and state equation in 74 ms returned []
Implicit Place search using SMT with State Equation took 349 ms to find 0 implicit places.
[2023-03-11 12:30:18] [INFO ] Invariant cache hit.
[2023-03-11 12:30:18] [INFO ] Dead Transitions using invariants and state equation in 70 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 443 ms. Remains : 27/27 places, 29/29 transitions.
Support contains 27 out of 27 places after structural reductions.
[2023-03-11 12:30:18] [INFO ] Flatten gal took : 28 ms
[2023-03-11 12:30:18] [INFO ] Flatten gal took : 12 ms
[2023-03-11 12:30:18] [INFO ] Input system was already deterministic with 29 transitions.
Incomplete random walk after 10243 steps, including 1 resets, run finished after 26 ms. (steps per millisecond=393 ) properties (out of 112) seen :8
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=7 ) properties (out of 104) seen :3
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=11 ) properties (out of 101) seen :3
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=12 ) properties (out of 98) seen :1
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=11 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=11 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=12 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=12 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 97) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 97) seen :1
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 96) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 96) seen :2
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=7 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 100 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=50 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Incomplete Best-First random walk after 101 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 94) seen :0
Running SMT prover for 94 properties.
[2023-03-11 12:30:19] [INFO ] Invariant cache hit.
[2023-03-11 12:30:19] [INFO ] [Real]Absence check using 11 positive place invariants in 5 ms returned sat
[2023-03-11 12:30:19] [INFO ] After 367ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:94
[2023-03-11 12:30:20] [INFO ] [Nat]Absence check using 11 positive place invariants in 4 ms returned sat
[2023-03-11 12:30:20] [INFO ] After 271ms SMT Verify possible using state equation in natural domain returned unsat :39 sat :55
[2023-03-11 12:30:20] [INFO ] State equation strengthened by 3 read => feed constraints.
[2023-03-11 12:30:20] [INFO ] After 239ms SMT Verify possible using 3 Read/Feed constraints in natural domain returned unsat :39 sat :55
[2023-03-11 12:30:21] [INFO ] After 541ms SMT Verify possible using trap constraints in natural domain returned unsat :39 sat :55
Attempting to minimize the solution found.
Minimization took 260 ms.
[2023-03-11 12:30:21] [INFO ] After 1453ms SMT Verify possible using all constraints in natural domain returned unsat :39 sat :55
Fused 94 Parikh solutions to 55 different solutions.
Parikh walk visited 48 properties in 30729 ms.
Support contains 9 out of 27 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 27/27 places, 29/29 transitions.
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 27 transition count 28
Applied a total of 1 rules in 13 ms. Remains 27 /27 variables (removed 0) and now considering 28/29 (removed 1) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 27/27 places, 28/29 transitions.
Incomplete random walk after 10243 steps, including 1 resets, run finished after 7 ms. (steps per millisecond=1463 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 23 ms. (steps per millisecond=434 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=588 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 21 ms. (steps per millisecond=476 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 7) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 7) seen :0
Interrupted probabilistic random walk after 201688 steps, run timeout after 3001 ms. (steps per millisecond=67 ) properties seen :{}
Probabilistic random walk after 201688 steps, saw 157791 distinct states, run finished after 3002 ms. (steps per millisecond=67 ) properties seen :0
Running SMT prover for 7 properties.
// Phase 1: matrix 28 rows 27 cols
[2023-03-11 12:30:55] [INFO ] Computed 11 place invariants in 3 ms
[2023-03-11 12:30:55] [INFO ] [Real]Absence check using 11 positive place invariants in 5 ms returned sat
[2023-03-11 12:30:55] [INFO ] After 113ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:7
[2023-03-11 12:30:55] [INFO ] [Nat]Absence check using 11 positive place invariants in 6 ms returned sat
[2023-03-11 12:30:55] [INFO ] After 46ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :7
[2023-03-11 12:30:55] [INFO ] State equation strengthened by 2 read => feed constraints.
[2023-03-11 12:30:55] [INFO ] After 25ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :7
[2023-03-11 12:30:55] [INFO ] After 58ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :7
Attempting to minimize the solution found.
Minimization took 23 ms.
[2023-03-11 12:30:55] [INFO ] After 195ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :7
Parikh walk visited 6 properties in 4707 ms.
Support contains 3 out of 27 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 27/27 places, 28/28 transitions.
Graph (trivial) has 6 edges and 27 vertex of which 6 / 27 are part of one of the 3 SCC in 3 ms
Free SCC test removed 3 places
Drop transitions removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Discarding 2 places :
Also discarding 1 output transitions
Drop transitions removed 1 transitions
Remove reverse transitions (loop back) rule discarded transition t20 and 2 places that fell out of Prefix Of Interest.
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 3 place count 22 transition count 20
Applied a total of 3 rules in 10 ms. Remains 22 /27 variables (removed 5) and now considering 20/28 (removed 8) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 22/27 places, 20/28 transitions.
Incomplete random walk after 10243 steps, including 1 resets, run finished after 4 ms. (steps per millisecond=2560 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 1900913 steps, run timeout after 3001 ms. (steps per millisecond=633 ) properties seen :{}
Probabilistic random walk after 1900913 steps, saw 1484510 distinct states, run finished after 3001 ms. (steps per millisecond=633 ) properties seen :0
Running SMT prover for 1 properties.
// Phase 1: matrix 20 rows 22 cols
[2023-03-11 12:31:03] [INFO ] Computed 10 place invariants in 1 ms
[2023-03-11 12:31:03] [INFO ] [Real]Absence check using 10 positive place invariants in 3 ms returned sat
[2023-03-11 12:31:03] [INFO ] After 63ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-11 12:31:03] [INFO ] [Nat]Absence check using 10 positive place invariants in 2 ms returned sat
[2023-03-11 12:31:03] [INFO ] After 12ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-11 12:31:03] [INFO ] State equation strengthened by 2 read => feed constraints.
[2023-03-11 12:31:03] [INFO ] After 4ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-11 12:31:03] [INFO ] After 8ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 49 ms.
[2023-03-11 12:31:03] [INFO ] After 100ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Finished Parikh walk after 30666 steps, including 0 resets, run visited all 1 properties in 48 ms. (steps per millisecond=638 )
Parikh walk visited 1 properties in 47 ms.
Successfully simplified 39 atomic propositions for a total of 16 simplifications.
FORMULA CloudOpsManagement-PT-10240by05120-CTLCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-11 12:31:03] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 13 ms
FORMULA CloudOpsManagement-PT-10240by05120-CTLCardinality-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 5 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Support contains 26 out of 27 places (down from 27) after GAL structural reductions.
Computed a total of 0 stabilizing places and 0 stable transitions
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 0 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 2 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 5 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 0 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 2 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 8 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Graph (trivial) has 9 edges and 27 vertex of which 8 / 27 are part of one of the 4 SCC in 0 ms
Free SCC test removed 4 places
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Drop transitions removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 23 transition count 22
Drop transitions 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 7 place count 23 transition count 19
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 13 place count 17 transition count 19
Applied a total of 13 rules in 11 ms. Remains 17 /27 variables (removed 10) and now considering 19/29 (removed 10) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 11 ms. Remains : 17/27 places, 19/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 19 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 2 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Graph (trivial) has 6 edges and 27 vertex of which 6 / 27 are part of one of the 3 SCC in 0 ms
Free SCC test removed 3 places
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Drop transitions removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 0 with 2 rules applied. Total rules applied 3 place count 24 transition count 24
Drop transitions removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 5 place count 24 transition count 22
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 9 place count 20 transition count 22
Applied a total of 9 rules in 9 ms. Remains 20 /27 variables (removed 7) and now considering 22/29 (removed 7) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 11 ms. Remains : 20/27 places, 22/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 22 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Graph (trivial) has 9 edges and 27 vertex of which 8 / 27 are part of one of the 4 SCC in 0 ms
Free SCC test removed 4 places
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Drop transitions removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 23 transition count 22
Drop transitions 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 7 place count 23 transition count 19
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 13 place count 17 transition count 19
Applied a total of 13 rules in 10 ms. Remains 17 /27 variables (removed 10) and now considering 19/29 (removed 10) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 11 ms. Remains : 17/27 places, 19/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 19 transitions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 2 ms. Remains : 27/27 places, 29/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 29 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Graph (trivial) has 7 edges and 27 vertex of which 6 / 27 are part of one of the 3 SCC in 0 ms
Free SCC test removed 3 places
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Drop transitions removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 24 transition count 25
Drop transitions 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 3 place count 24 transition count 24
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 22 transition count 24
Applied a total of 5 rules in 9 ms. Remains 22 /27 variables (removed 5) and now considering 24/29 (removed 5) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 10 ms. Remains : 22/27 places, 24/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 24 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Graph (trivial) has 5 edges and 27 vertex of which 4 / 27 are part of one of the 2 SCC in 0 ms
Free SCC test removed 2 places
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Applied a total of 1 rules in 4 ms. Remains 25 /27 variables (removed 2) and now considering 27/29 (removed 2) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 5 ms. Remains : 25/27 places, 27/29 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 3 ms
[2023-03-11 12:31:03] [INFO ] Input system was already deterministic with 27 transitions.
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 5 ms
[2023-03-11 12:31:03] [INFO ] Flatten gal took : 4 ms
[2023-03-11 12:31:04] [INFO ] Export to MCC of 14 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 3 ms.
[2023-03-11 12:31:04] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 27 places, 29 transitions and 94 arcs took 1 ms.
Total runtime 46177 ms.
There are residual formulas that ITS could not solve within timeout
timeout --kill-after=10s --signal=SIGINT 1m for testing only

Marcie built on Linux at 2019-11-18.
A model checker for Generalized Stochastic Petri nets

authors: Alex Tovchigrechko (IDD package and CTL model checking)

Martin Schwarick (Symbolic numerical analysis and CSL model checking)

Christian Rohr (Simulative and approximative numerical model checking)

marcie@informatik.tu-cottbus.de

called as: /home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin/marcie --net-file=model.pnml --mcc-file=CTLCardinality.xml --memory=6 --mcc-mode

parse successfull
net created successfully

Net: Petri
(NrP: 27 NrTr: 29 NrArc: 94)

parse formulas
formulas created successfully
place and transition orderings generation:0m 0.001sec

net check time: 0m 0.000sec

init dd package: 0m 3.644sec


BK_STOP 1678538490793

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -timeout 360 -rebuildPNML
check for maximal unmarked siphon
ok
check for constant places
ok
check if there are places and transitions
ok
check if there are transitions without pre-places
ok
check if at least one transition is enabled in m0
ok
check if there are transitions that can never fire
ok


initing FirstDep: 0m 0.004sec

/home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin//../BenchKit_head.sh: line 16: 491 Killed ${MARCIE} --net-file=model.pnml --mcc-file=${BK_EXAMINATION}.xml ${MARCIE_CONFIG}

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="CloudOpsManagement-PT-10240by05120"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="marciexred"
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 marciexred"
echo " Input is CloudOpsManagement-PT-10240by05120, 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 r074-smll-167814400400553"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudOpsManagement-PT-10240by05120.tgz
mv CloudOpsManagement-PT-10240by05120 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 ;