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.r009-oct2-167813597700329.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.......................
=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is Angiogenesis-PT-10, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r009-oct2-167813597700329
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 456K
-rw-r--r-- 1 mcc users 6.6K Feb 26 14:55 CTLCardinality.txt
-rw-r--r-- 1 mcc users 63K Feb 26 14:55 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.2K Feb 26 14:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 33K Feb 26 14:54 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 4.1K Feb 25 15:31 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 15:31 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 15:31 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 15:31 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Feb 26 14:56 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 114K Feb 26 14:56 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.7K Feb 26 14:55 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 67K Feb 26 14:55 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:31 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:31 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 33K 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 Angiogenesis-PT-10-CTLCardinality-00
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-01
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-02
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-03
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-04
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-05
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-06
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-07
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-08
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-09
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-10
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-11
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-12
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-13
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-14
FORMULA_NAME Angiogenesis-PT-10-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1678622459584

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=ltsminxred
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Angiogenesis-PT-10
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-12 12:01:02] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-12 12:01:02] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 12:01:02] [INFO ] Load time of PNML (sax parser for PT used): 35 ms
[2023-03-12 12:01:02] [INFO ] Transformed 39 places.
[2023-03-12 12:01:02] [INFO ] Transformed 64 transitions.
[2023-03-12 12:01:02] [INFO ] Parsed PT model containing 39 places and 64 transitions and 185 arcs in 94 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 10 ms.
Support contains 37 out of 39 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Applied a total of 0 rules in 16 ms. Remains 39 /39 variables (removed 0) and now considering 64/64 (removed 0) transitions.
// Phase 1: matrix 64 rows 39 cols
[2023-03-12 12:01:02] [INFO ] Computed 8 place invariants in 8 ms
[2023-03-12 12:01:02] [INFO ] Implicit Places using invariants in 193 ms returned []
[2023-03-12 12:01:02] [INFO ] Invariant cache hit.
[2023-03-12 12:01:02] [INFO ] Implicit Places using invariants and state equation in 124 ms returned []
Implicit Place search using SMT with State Equation took 347 ms to find 0 implicit places.
[2023-03-12 12:01:02] [INFO ] Invariant cache hit.
[2023-03-12 12:01:02] [INFO ] Dead Transitions using invariants and state equation in 153 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 521 ms. Remains : 39/39 places, 64/64 transitions.
Support contains 37 out of 39 places after structural reductions.
[2023-03-12 12:01:03] [INFO ] Flatten gal took : 27 ms
[2023-03-12 12:01:03] [INFO ] Flatten gal took : 12 ms
[2023-03-12 12:01:03] [INFO ] Input system was already deterministic with 64 transitions.
Support contains 36 out of 39 places (down from 37) after GAL structural reductions.
Incomplete random walk after 10004 steps, including 3 resets, run finished after 250 ms. (steps per millisecond=40 ) properties (out of 62) seen :52
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 71 ms. (steps per millisecond=140 ) properties (out of 10) 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 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 10) seen :1
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 9) seen :1
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 8) 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 8) seen :1
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 7) seen :1
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 6) seen :1
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 5) seen :0
Running SMT prover for 5 properties.
[2023-03-12 12:01:03] [INFO ] Invariant cache hit.
[2023-03-12 12:01:03] [INFO ] [Real]Absence check using 8 positive place invariants in 2 ms returned sat
[2023-03-12 12:01:03] [INFO ] After 77ms SMT Verify possible using all constraints in real domain returned unsat :3 sat :0 real:2
[2023-03-12 12:01:03] [INFO ] [Nat]Absence check using 8 positive place invariants in 2 ms returned sat
[2023-03-12 12:01:04] [INFO ] After 29ms SMT Verify possible using state equation in natural domain returned unsat :3 sat :2
[2023-03-12 12:01:04] [INFO ] After 43ms SMT Verify possible using trap constraints in natural domain returned unsat :3 sat :2
Attempting to minimize the solution found.
Minimization took 9 ms.
[2023-03-12 12:01:04] [INFO ] After 131ms SMT Verify possible using all constraints in natural domain returned unsat :3 sat :2
Fused 5 Parikh solutions to 2 different solutions.
Parikh walk visited 0 properties in 5 ms.
Support contains 3 out of 39 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 39/39 places, 64/64 transitions.
Graph (complete) has 117 edges and 39 vertex of which 38 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 0 output transitions
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 1 place count 38 transition count 63
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 36 transition count 63
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 5 place count 36 transition count 62
Performed 9 Post agglomeration using F-continuation condition.Transition count delta: 9
Deduced a syphon composed of 9 places in 0 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 1 with 18 rules applied. Total rules applied 23 place count 27 transition count 53
Drop transitions removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Graph (complete) has 82 edges and 27 vertex of which 26 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output transitions
Iterating post reduction 1 with 9 rules applied. Total rules applied 32 place count 26 transition count 45
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 33 place count 26 transition count 44
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -3
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 35 place count 25 transition count 47
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 37 place count 25 transition count 45
Drop transitions removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 4 with 3 rules applied. Total rules applied 40 place count 25 transition count 42
Free-agglomeration rule applied 4 times.
Iterating global reduction 4 with 4 rules applied. Total rules applied 44 place count 25 transition count 38
Reduce places removed 4 places and 0 transitions.
Drop transitions removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 4 with 7 rules applied. Total rules applied 51 place count 21 transition count 35
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 5 with 2 rules applied. Total rules applied 53 place count 21 transition count 33
Reduce places removed 2 places and 0 transitions.
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 5 with 3 rules applied. Total rules applied 56 place count 19 transition count 32
Applied a total of 56 rules in 24 ms. Remains 19 /39 variables (removed 20) and now considering 32/64 (removed 32) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 24 ms. Remains : 19/39 places, 32/64 transitions.
Incomplete random walk after 10005 steps, including 2 resets, run finished after 21 ms. (steps per millisecond=476 ) properties (out of 2) seen :1
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
Running SMT prover for 1 properties.
[2023-03-12 12:01:04] [INFO ] Flow matrix only has 31 transitions (discarded 1 similar events)
// Phase 1: matrix 31 rows 19 cols
[2023-03-12 12:01:04] [INFO ] Computed 6 place invariants in 1 ms
[2023-03-12 12:01:04] [INFO ] [Real]Absence check using 6 positive place invariants in 1 ms returned sat
[2023-03-12 12:01:04] [INFO ] After 40ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 12:01:04] [INFO ] [Nat]Absence check using 6 positive place invariants in 1 ms returned sat
[2023-03-12 12:01:04] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 12:01:04] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-12 12:01:04] [INFO ] After 2ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-12 12:01:04] [INFO ] After 6ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 3 ms.
[2023-03-12 12:01:04] [INFO ] After 45ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 19 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 19/19 places, 32/32 transitions.
Discarding 1 places :
Also discarding 1 output transitions
Drop transitions removed 1 transitions
Remove reverse transitions (loop back) rule discarded transition t32 and 1 places that fell out of Prefix Of Interest.
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
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 3 rules applied. Total rules applied 3 place count 18 transition count 29
Reduce places removed 1 places and 0 transitions.
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 17 transition count 28
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 7 place count 16 transition count 28
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 9 place count 16 transition count 26
Applied a total of 9 rules in 3 ms. Remains 16 /19 variables (removed 3) and now considering 26/32 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 16/19 places, 26/32 transitions.
Incomplete random walk after 10001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=2000 ) properties (out of 1) seen :0
Finished Best-First random walk after 378 steps, including 0 resets, run visited all 1 properties in 1 ms. (steps per millisecond=378 )
Successfully simplified 3 atomic propositions for a total of 16 simplifications.
[2023-03-12 12:01:04] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 7 ms
FORMULA Angiogenesis-PT-10-CTLCardinality-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 6 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Graph (complete) has 117 edges and 39 vertex of which 38 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Starting structural reductions in SI_CTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Partial Post-agglomeration rule applied 2 times.
Drop transitions removed 2 transitions
Iterating global reduction 0 with 2 rules applied. Total rules applied 2 place count 39 transition count 64
Applied a total of 2 rules in 4 ms. Remains 39 /39 variables (removed 0) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 4 ms. Remains : 39/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 38 transition count 64
Applied a total of 1 rules in 1 ms. Remains 38 /39 variables (removed 1) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 38/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 38 transition count 64
Applied a total of 1 rules in 1 ms. Remains 38 /39 variables (removed 1) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 38/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Graph (complete) has 117 edges and 39 vertex of which 38 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output transitions
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 1 place count 38 transition count 63
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 36 transition count 63
Applied a total of 4 rules in 3 ms. Remains 36 /39 variables (removed 3) and now considering 63/64 (removed 1) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 3 ms. Remains : 36/39 places, 63/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 63 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 0 place count 39 transition count 63
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 3 rules applied. Total rules applied 3 place count 37 transition count 63
Partial Post-agglomeration rule applied 3 times.
Drop transitions removed 3 transitions
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 37 transition count 63
Applied a total of 6 rules in 4 ms. Remains 37 /39 variables (removed 2) and now considering 63/64 (removed 1) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 4 ms. Remains : 37/39 places, 63/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 63 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 38 transition count 64
Applied a total of 1 rules in 1 ms. Remains 38 /39 variables (removed 1) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 38/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Applied a total of 0 rules in 1 ms. Remains 39 /39 variables (removed 0) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 39/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 4 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Graph (complete) has 117 edges and 39 vertex of which 38 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output transitions
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 1 place count 38 transition count 63
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 36 transition count 63
Partial Post-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 5 place count 36 transition count 63
Applied a total of 5 rules in 3 ms. Remains 36 /39 variables (removed 3) and now considering 63/64 (removed 1) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 3 ms. Remains : 36/39 places, 63/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 63 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 38 transition count 64
Applied a total of 1 rules in 0 ms. Remains 38 /39 variables (removed 1) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 0 ms. Remains : 38/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 38 transition count 64
Applied a total of 1 rules in 1 ms. Remains 38 /39 variables (removed 1) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 38/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Graph (complete) has 117 edges and 39 vertex of which 38 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 0 output transitions
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 1 place count 38 transition count 63
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 36 transition count 63
Partial Post-agglomeration rule applied 2 times.
Drop transitions removed 2 transitions
Iterating global reduction 0 with 2 rules applied. Total rules applied 6 place count 36 transition count 63
Applied a total of 6 rules in 15 ms. Remains 36 /39 variables (removed 3) and now considering 63/64 (removed 1) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 15 ms. Remains : 36/39 places, 63/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 63 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 38 transition count 64
Applied a total of 1 rules in 1 ms. Remains 38 /39 variables (removed 1) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 38/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 4 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Applied a total of 0 rules in 1 ms. Remains 39 /39 variables (removed 0) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1 ms. Remains : 39/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in LTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Applied a total of 0 rules in 0 ms. Remains 39 /39 variables (removed 0) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 0 ms. Remains : 39/39 places, 64/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 39/39 places, 64/64 transitions.
Graph (complete) has 117 edges and 39 vertex of which 38 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output transitions
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 1 place count 38 transition count 63
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 3 rules applied. Total rules applied 4 place count 36 transition count 63
Partial Post-agglomeration rule applied 7 times.
Drop transitions removed 7 transitions
Iterating global reduction 0 with 7 rules applied. Total rules applied 11 place count 36 transition count 63
Applied a total of 11 rules in 4 ms. Remains 36 /39 variables (removed 3) and now considering 63/64 (removed 1) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 5 ms. Remains : 36/39 places, 63/64 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 2 ms
[2023-03-12 12:01:04] [INFO ] Input system was already deterministic with 63 transitions.
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Flatten gal took : 3 ms
[2023-03-12 12:01:04] [INFO ] Export to MCC of 15 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 2 ms.
[2023-03-12 12:01:04] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 39 places, 64 transitions and 185 arcs took 1 ms.
Total runtime 2311 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --ctl=/tmp/488/ctl_0_ --ctl=/tmp/488/ctl_1_ --ctl=/tmp/488/ctl_2_ --ctl=/tmp/488/ctl_3_ --ctl=/tmp/488/ctl_4_ --ctl=/tmp/488/ctl_5_ --ctl=/tmp/488/ctl_6_ --ctl=/tmp/488/ctl_7_ --ctl=/tmp/488/ctl_8_ --ctl=/tmp/488/ctl_9_ --ctl=/tmp/488/ctl_10_ --ctl=/tmp/488/ctl_11_ --ctl=/tmp/488/ctl_12_ --ctl=/tmp/488/ctl_13_ --ctl=/tmp/488/ctl_14_ --mu-par --mu-opt
TIME LIMIT: Killed by timeout after 3570 seconds
MemTotal: 16393220 kB
MemFree: 163960 kB
After kill :
MemTotal: 16393220 kB
MemFree: 16099016 kB
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-00
FORMULA Angiogenesis-PT-10-CTLCardinality-01 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-03
FORMULA Angiogenesis-PT-10-CTLCardinality-04 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-05
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-06
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-07
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-08
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-09
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-10
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-11
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-12
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-13
Could not compute solution for formula : Angiogenesis-PT-10-CTLCardinality-14
FORMULA Angiogenesis-PT-10-CTLCardinality-15 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN

BK_STOP 1678626036279

--------------------
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
mcc2023
ctl formula name Angiogenesis-PT-10-CTLCardinality-00
ctl formula formula --ctl=/tmp/488/ctl_0_
ctl formula name Angiogenesis-PT-10-CTLCardinality-01
ctl formula formula --ctl=/tmp/488/ctl_1_
ctl formula name Angiogenesis-PT-10-CTLCardinality-03
ctl formula formula --ctl=/tmp/488/ctl_2_
ctl formula name Angiogenesis-PT-10-CTLCardinality-04
ctl formula formula --ctl=/tmp/488/ctl_3_
ctl formula name Angiogenesis-PT-10-CTLCardinality-05
ctl formula formula --ctl=/tmp/488/ctl_4_
ctl formula name Angiogenesis-PT-10-CTLCardinality-06
ctl formula formula --ctl=/tmp/488/ctl_5_
ctl formula name Angiogenesis-PT-10-CTLCardinality-07
ctl formula formula --ctl=/tmp/488/ctl_6_
ctl formula name Angiogenesis-PT-10-CTLCardinality-08
ctl formula formula --ctl=/tmp/488/ctl_7_
ctl formula name Angiogenesis-PT-10-CTLCardinality-09
ctl formula formula --ctl=/tmp/488/ctl_8_
ctl formula name Angiogenesis-PT-10-CTLCardinality-10
ctl formula formula --ctl=/tmp/488/ctl_9_
ctl formula name Angiogenesis-PT-10-CTLCardinality-11
ctl formula formula --ctl=/tmp/488/ctl_10_
ctl formula name Angiogenesis-PT-10-CTLCardinality-12
ctl formula formula --ctl=/tmp/488/ctl_11_
ctl formula name Angiogenesis-PT-10-CTLCardinality-13
ctl formula formula --ctl=/tmp/488/ctl_12_
ctl formula name Angiogenesis-PT-10-CTLCardinality-14
ctl formula formula --ctl=/tmp/488/ctl_13_
ctl formula name Angiogenesis-PT-10-CTLCardinality-15
ctl formula formula --ctl=/tmp/488/ctl_14_
pnml2lts-sym: Exploration order is bfs-prev
pnml2lts-sym: Saturation strategy is sat
pnml2lts-sym: Guided search strategy is unguided
pnml2lts-sym: Attractor strategy is default
pnml2lts-sym: opening model.pnml
pnml2lts-sym: Edge label is id
Warning: program compiled against libxml 210 using older 209
pnml2lts-sym: Petri net has 39 places, 64 transitions and 185 arcs
pnml2lts-sym: Petri net Petri analyzed
pnml2lts-sym: There are no safe places
pnml2lts-sym: Loading Petri net took 0.000 real 0.000 user 0.000 sys
pnml2lts-sym: Initializing regrouping layer
pnml2lts-sym: Regroup specification: bs,w2W,ru,hf
pnml2lts-sym: Regroup Boost's Sloan
pnml2lts-sym: Regroup over-approximate must-write to may-write
pnml2lts-sym: Regroup Row sUbsume
pnml2lts-sym: Reqroup Horizontal Flip
pnml2lts-sym: Regrouping: 64->40 groups
pnml2lts-sym: Regrouping took 0.000 real 0.000 user 0.000 sys
pnml2lts-sym: state vector length is 39; there are 40 groups
pnml2lts-sym: Creating a multi-core ListDD domain.
pnml2lts-sym: Sylvan allocates 15.000 GB virtual memory for nodes table and operation cache.
pnml2lts-sym: Initial nodes table and operation cache requires 60.00 MB.
pnml2lts-sym: Using GBgetTransitionsShortR2W as next-state function
pnml2lts-sym: got initial state
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: parsing CTL formula
pnml2lts-sym: converting CTL to mu-calculus...
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: Exploration took 11553058 group checks and 0 next state calls
pnml2lts-sym: reachability took 145.230 real 580.020 user 0.310 sys
pnml2lts-sym: counting visited states...
pnml2lts-sym: counting took 0.070 real 0.310 user 0.000 sys
pnml2lts-sym: state space has 822645885495 states, 134743 nodes
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: Formula /tmp/488/ctl_1_ holds for the initial state
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: Formula /tmp/488/ctl_14_ does not hold for the initial state
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: Formula /tmp/488/ctl_3_ does not hold for the initial state
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
pnml2lts-sym: vset_sylvan: starting garbage collection
pnml2lts-sym: vset_sylvan: garbage collection done
Killing (15) : 494
Killing (9) : 494

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="Angiogenesis-PT-10"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="ltsminxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5348"
echo " Executing tool ltsminxred"
echo " Input is Angiogenesis-PT-10, 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 r009-oct2-167813597700329"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Angiogenesis-PT-10.tgz
mv Angiogenesis-PT-10 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 ;