Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2020-input.r066-tajo-158922813900127.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2020-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-4028
Executing tool itstools
Input is DNAwalker-PT-06track28RL, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r066-tajo-158922813900127
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 284K
-rw-r--r-- 1 mcc users 3.6K Mar 31 04:56 CTLCardinality.txt
-rw-r--r-- 1 mcc users 20K Mar 31 04:56 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Mar 29 20:52 CTLFireability.txt
-rw-r--r-- 1 mcc users 15K Mar 29 20:52 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 24 05:37 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.6K Mar 24 05:37 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.3K Apr 8 14:51 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Apr 28 14:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Apr 8 14:52 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 28 14:00 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.3K Mar 28 13:41 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 17K Mar 28 13:41 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.5K Mar 27 06:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 23K Mar 27 06:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 28 14:49 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 28 14:49 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 24 05:37 equiv_col
-rw-r--r-- 1 mcc users 12 Mar 24 05:37 instance
-rw-r--r-- 1 mcc users 6 Mar 24 05:37 iscolored
-rw-r--r-- 1 mcc users 108K Mar 24 05:37 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 DNAwalker-PT-06track28RL-ReachabilityFireability-00
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-01
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-02
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-03
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-04
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-05
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-06
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-07
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-08
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-09
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-10
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-11
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-12
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-13
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-14
FORMULA_NAME DNAwalker-PT-06track28RL-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1590101064420

[2020-05-21 22:44:26] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -greatspnpath, /home/mcc/BenchKit//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2020-05-21 22:44:26] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-05-21 22:44:26] [INFO ] Load time of PNML (sax parser for PT used): 53 ms
[2020-05-21 22:44:26] [INFO ] Transformed 34 places.
[2020-05-21 22:44:26] [INFO ] Transformed 250 transitions.
[2020-05-21 22:44:26] [INFO ] Parsed PT model containing 34 places and 250 transitions in 90 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 16 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 630 resets, run finished after 79 ms. (steps per millisecond=126 ) properties seen :[1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0]
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-10 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10000 steps, including 58 resets, run finished after 35 ms. (steps per millisecond=285 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 58 resets, run finished after 38 ms. (steps per millisecond=263 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 66 resets, run finished after 23 ms. (steps per millisecond=434 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 71 resets, run finished after 21 ms. (steps per millisecond=476 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 70 resets, run finished after 27 ms. (steps per millisecond=370 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 61 resets, run finished after 21 ms. (steps per millisecond=476 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 60 resets, run finished after 15 ms. (steps per millisecond=666 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 63 resets, run finished after 12 ms. (steps per millisecond=833 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 69 resets, run finished after 15 ms. (steps per millisecond=666 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 75 resets, run finished after 11 ms. (steps per millisecond=909 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 63 resets, run finished after 40 ms. (steps per millisecond=250 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
[2020-05-21 22:44:26] [INFO ] Flow matrix only has 247 transitions (discarded 3 similar events)
// Phase 1: matrix 247 rows 34 cols
[2020-05-21 22:44:26] [INFO ] Computed 0 place invariants in 7 ms
[2020-05-21 22:44:26] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:26] [INFO ] [Real]Absence check using state equation in 117 ms returned sat
[2020-05-21 22:44:26] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:26] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:26] [INFO ] [Nat]Absence check using state equation in 156 ms returned unsat
[2020-05-21 22:44:26] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:27] [INFO ] [Real]Absence check using state equation in 101 ms returned sat
[2020-05-21 22:44:27] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:27] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:27] [INFO ] [Nat]Absence check using state equation in 340 ms returned unsat
[2020-05-21 22:44:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:27] [INFO ] [Real]Absence check using state equation in 113 ms returned sat
[2020-05-21 22:44:27] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:27] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:27] [INFO ] [Nat]Absence check using state equation in 160 ms returned unsat
[2020-05-21 22:44:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:27] [INFO ] [Real]Absence check using state equation in 108 ms returned sat
[2020-05-21 22:44:27] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:27] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:28] [INFO ] [Nat]Absence check using state equation in 399 ms returned unsat
[2020-05-21 22:44:28] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:28] [INFO ] [Real]Absence check using state equation in 88 ms returned sat
[2020-05-21 22:44:28] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:28] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:28] [INFO ] [Nat]Absence check using state equation in 234 ms returned unsat
[2020-05-21 22:44:28] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:28] [INFO ] [Real]Absence check using state equation in 145 ms returned sat
[2020-05-21 22:44:28] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:28] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:29] [INFO ] [Nat]Absence check using state equation in 252 ms returned unsat
[2020-05-21 22:44:29] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:29] [INFO ] [Real]Absence check using state equation in 75 ms returned sat
[2020-05-21 22:44:29] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:29] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:29] [INFO ] [Nat]Absence check using state equation in 162 ms returned unsat
[2020-05-21 22:44:29] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:29] [INFO ] [Real]Absence check using state equation in 89 ms returned sat
[2020-05-21 22:44:29] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:29] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:29] [INFO ] [Nat]Absence check using state equation in 148 ms returned unsat
[2020-05-21 22:44:29] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:29] [INFO ] [Real]Absence check using state equation in 59 ms returned sat
[2020-05-21 22:44:29] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:29] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:30] [INFO ] [Nat]Absence check using state equation in 230 ms returned unsat
[2020-05-21 22:44:30] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:30] [INFO ] [Real]Absence check using state equation in 75 ms returned sat
[2020-05-21 22:44:30] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:30] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:30] [INFO ] [Nat]Absence check using state equation in 154 ms returned sat
[2020-05-21 22:44:30] [INFO ] State equation strengthened by 54 read => feed constraints.
[2020-05-21 22:44:30] [INFO ] [Nat]Added 54 Read/Feed constraints in 171 ms returned sat
[2020-05-21 22:44:30] [INFO ] Computed and/alt/rep : 234/2667/231 causal constraints in 50 ms.
[2020-05-21 22:44:30] [INFO ] Added : 27 causal constraints over 6 iterations in 302 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 13 ms.
[2020-05-21 22:44:30] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:30] [INFO ] [Real]Absence check using state equation in 63 ms returned sat
[2020-05-21 22:44:30] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:44:30] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:44:31] [INFO ] [Nat]Absence check using state equation in 168 ms returned unsat
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-15 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-12 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-11 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-08 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-07 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-05 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-04 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-03 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-01 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Incomplete Parikh walk after 2800 steps, including 334 resets, run finished after 16 ms. (steps per millisecond=175 ) properties seen :[0] could not realise parikh vector
Support contains 8 out of 34 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 34/34 places, 250/250 transitions.
Discarding 1 places :
Also discarding 1 output transitions
Drop transitions removed 1 transitions
Graph (complete) has 240 edges and 34 vertex of which 33 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.8 ms
Drop transitions removed 14 transitions
Reduce isomorphic transitions removed 14 transitions.
Iterating post reduction 0 with 14 rules applied. Total rules applied 15 place count 33 transition count 235
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 16 place count 32 transition count 234
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 17 place count 31 transition count 233
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 18 place count 30 transition count 232
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 19 place count 29 transition count 231
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 20 place count 28 transition count 230
Applied a total of 20 rules in 62 ms. Remains 28 /34 variables (removed 6) and now considering 230/250 (removed 20) transitions.
// Phase 1: matrix 230 rows 28 cols
[2020-05-21 22:44:31] [INFO ] Computed 0 place invariants in 3 ms
[2020-05-21 22:44:31] [INFO ] Dead Transitions using invariants and state equation in 146 ms returned []
Finished structural reductions, in 1 iterations. Remains : 28/34 places, 230/250 transitions.
Incomplete random walk after 1000000 steps, including 82897 resets, run finished after 2637 ms. (steps per millisecond=379 ) properties seen :[0]
Incomplete Best-First random walk after 1000001 steps, including 11806 resets, run finished after 838 ms. (steps per millisecond=1193 ) properties seen :[0]
Interrupted probabilistic random walk after 19980343 steps, run timeout after 30001 ms. (steps per millisecond=665 ) properties seen :[0]
Probabilistic random walk after 19980343 steps, saw 4823564 distinct states, run finished after 30003 ms. (steps per millisecond=665 ) properties seen :[0]
// Phase 1: matrix 230 rows 28 cols
[2020-05-21 22:45:04] [INFO ] Computed 0 place invariants in 12 ms
[2020-05-21 22:45:04] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:04] [INFO ] [Real]Absence check using state equation in 80 ms returned sat
[2020-05-21 22:45:04] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:45:04] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:05] [INFO ] [Nat]Absence check using state equation in 149 ms returned sat
[2020-05-21 22:45:05] [INFO ] State equation strengthened by 6 read => feed constraints.
[2020-05-21 22:45:05] [INFO ] [Nat]Added 6 Read/Feed constraints in 6 ms returned sat
[2020-05-21 22:45:05] [INFO ] Computed and/alt/rep : 224/2092/224 causal constraints in 30 ms.
[2020-05-21 22:45:06] [INFO ] Added : 80 causal constraints over 21 iterations in 1252 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 15 ms.
Incomplete Parikh walk after 2300 steps, including 595 resets, run finished after 16 ms. (steps per millisecond=143 ) properties seen :[0] could not realise parikh vector
Support contains 8 out of 28 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 28/28 places, 230/230 transitions.
Applied a total of 0 rules in 7 ms. Remains 28 /28 variables (removed 0) and now considering 230/230 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 28/28 places, 230/230 transitions.
Starting structural reductions, iteration 0 : 28/28 places, 230/230 transitions.
Applied a total of 0 rules in 7 ms. Remains 28 /28 variables (removed 0) and now considering 230/230 (removed 0) transitions.
// Phase 1: matrix 230 rows 28 cols
[2020-05-21 22:45:06] [INFO ] Computed 0 place invariants in 2 ms
[2020-05-21 22:45:06] [INFO ] Implicit Places using invariants in 41 ms returned []
// Phase 1: matrix 230 rows 28 cols
[2020-05-21 22:45:06] [INFO ] Computed 0 place invariants in 2 ms
[2020-05-21 22:45:06] [INFO ] State equation strengthened by 6 read => feed constraints.
[2020-05-21 22:45:06] [INFO ] Implicit Places using invariants and state equation in 202 ms returned [18, 23, 27]
Discarding 3 places :
Drop transitions removed 15 transitions
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 17 transitions.
Implicit Place search using SMT with State Equation took 248 ms to find 3 implicit places.
[2020-05-21 22:45:06] [INFO ] Redundant transitions in 25 ms returned []
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:06] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:06] [INFO ] Dead Transitions using invariants and state equation in 132 ms returned []
Starting structural reductions, iteration 1 : 25/28 places, 213/230 transitions.
Applied a total of 0 rules in 7 ms. Remains 25 /25 variables (removed 0) and now considering 213/213 (removed 0) transitions.
[2020-05-21 22:45:06] [INFO ] Redundant transitions in 32 ms returned []
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:06] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:07] [INFO ] Dead Transitions using invariants and state equation in 93 ms returned []
Finished structural reductions, in 2 iterations. Remains : 25/28 places, 213/230 transitions.
Incomplete random walk after 1000000 steps, including 54937 resets, run finished after 1827 ms. (steps per millisecond=547 ) properties seen :[0]
Incomplete Best-First random walk after 1000001 steps, including 9170 resets, run finished after 945 ms. (steps per millisecond=1058 ) properties seen :[0]
Interrupted probabilistic random walk after 21848578 steps, run timeout after 30001 ms. (steps per millisecond=728 ) properties seen :[0]
Probabilistic random walk after 21848578 steps, saw 5165414 distinct states, run finished after 30001 ms. (steps per millisecond=728 ) properties seen :[0]
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:39] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:39] [INFO ] [Real]Absence check using state equation in 74 ms returned sat
[2020-05-21 22:45:39] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:45:39] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:40] [INFO ] [Nat]Absence check using state equation in 189 ms returned sat
[2020-05-21 22:45:40] [INFO ] State equation strengthened by 6 read => feed constraints.
[2020-05-21 22:45:40] [INFO ] [Nat]Added 6 Read/Feed constraints in 3 ms returned sat
[2020-05-21 22:45:40] [INFO ] Computed and/alt/rep : 207/1952/207 causal constraints in 26 ms.
[2020-05-21 22:45:41] [INFO ] Added : 74 causal constraints over 18 iterations in 1401 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 18 ms.
Incomplete Parikh walk after 2200 steps, including 577 resets, run finished after 17 ms. (steps per millisecond=129 ) properties seen :[0] could not realise parikh vector
Support contains 8 out of 25 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 25/25 places, 213/213 transitions.
Applied a total of 0 rules in 6 ms. Remains 25 /25 variables (removed 0) and now considering 213/213 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 25/25 places, 213/213 transitions.
Starting structural reductions, iteration 0 : 25/25 places, 213/213 transitions.
Applied a total of 0 rules in 5 ms. Remains 25 /25 variables (removed 0) and now considering 213/213 (removed 0) transitions.
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:41] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:41] [INFO ] Implicit Places using invariants in 51 ms returned []
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:41] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:41] [INFO ] State equation strengthened by 6 read => feed constraints.
[2020-05-21 22:45:41] [INFO ] Implicit Places using invariants and state equation in 136 ms returned []
Implicit Place search using SMT with State Equation took 191 ms to find 0 implicit places.
[2020-05-21 22:45:41] [INFO ] Redundant transitions in 220 ms returned []
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:41] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:42] [INFO ] Dead Transitions using invariants and state equation in 216 ms returned []
Finished structural reductions, in 1 iterations. Remains : 25/25 places, 213/213 transitions.
Incomplete random walk after 100000 steps, including 5507 resets, run finished after 259 ms. (steps per millisecond=386 ) properties seen :[0]
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:42] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:42] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:42] [INFO ] [Real]Absence check using state equation in 67 ms returned sat
[2020-05-21 22:45:42] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:45:42] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:42] [INFO ] [Nat]Absence check using state equation in 159 ms returned sat
[2020-05-21 22:45:42] [INFO ] State equation strengthened by 6 read => feed constraints.
[2020-05-21 22:45:42] [INFO ] [Nat]Added 6 Read/Feed constraints in 4 ms returned sat
[2020-05-21 22:45:42] [INFO ] Computed and/alt/rep : 207/1952/207 causal constraints in 25 ms.
[2020-05-21 22:45:43] [INFO ] Added : 74 causal constraints over 18 iterations in 1013 ms. Result :sat
Applied a total of 0 rules in 5 ms. Remains 25 /25 variables (removed 0) and now considering 213/213 (removed 0) transitions.
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:43] [INFO ] Computed 0 place invariants in 11 ms
[2020-05-21 22:45:43] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:43] [INFO ] [Real]Absence check using state equation in 61 ms returned sat
[2020-05-21 22:45:43] [INFO ] Solution in real domain found non-integer solution.
[2020-05-21 22:45:43] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-05-21 22:45:44] [INFO ] [Nat]Absence check using state equation in 145 ms returned sat
[2020-05-21 22:45:44] [INFO ] Computed and/alt/rep : 207/1916/207 causal constraints in 22 ms.
[2020-05-21 22:45:44] [INFO ] Added : 39 causal constraints over 10 iterations in 392 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 9 ms.
[2020-05-21 22:45:44] [INFO ] Flatten gal took : 49 ms
Using solver Z3 to compute partial order matrices.
Built C files in :
/home/mcc/execution
[2020-05-21 22:45:44] [INFO ] Applying decomposition
[2020-05-21 22:45:44] [INFO ] Flatten gal took : 27 ms
[2020-05-21 22:45:44] [INFO ] Flatten gal took : 51 ms
[2020-05-21 22:45:44] [INFO ] Input system was already deterministic with 213 transitions.
[2020-05-21 22:45:44] [INFO ] Input system was already deterministic with 213 transitions.
Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202005100927/bin/convert-linux64, -i, /tmp/graph11119629483131758243.txt, -o, /tmp/graph11119629483131758243.bin, -w, /tmp/graph11119629483131758243.weights], workingDir=null]
[2020-05-21 22:45:44] [INFO ] Ran tautology test, simplified 0 / 1 in 135 ms.
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202005100927/bin/louvain-linux64, /tmp/graph11119629483131758243.bin, -l, -1, -v, -w, /tmp/graph11119629483131758243.weights, -q, 0, -e, 0.001], workingDir=null]
[2020-05-21 22:45:44] [INFO ] BMC solution for property DNAwalker-PT-06track28RL-ReachabilityFireability-14(UNSAT) depth K=0 took 24 ms
[2020-05-21 22:45:44] [INFO ] BMC solution for property DNAwalker-PT-06track28RL-ReachabilityFireability-14(UNSAT) depth K=1 took 6 ms
[2020-05-21 22:45:44] [INFO ] Decomposing Gal with order
[2020-05-21 22:45:44] [INFO ] Rewriting arrays to variables to allow decomposition.
[2020-05-21 22:45:45] [INFO ] BMC solution for property DNAwalker-PT-06track28RL-ReachabilityFireability-14(UNSAT) depth K=2 took 25 ms
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:45] [INFO ] Computed 0 place invariants in 1 ms
Total of 0 invariants.
[2020-05-21 22:45:45] [INFO ] Computed 0 place invariants in 2 ms
[2020-05-21 22:45:45] [INFO ] Removed a total of 372 redundant transitions.
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 213 rows 25 cols
[2020-05-21 22:45:45] [INFO ] Computed 0 place invariants in 0 ms
Total of 0 invariants.
[2020-05-21 22:45:45] [INFO ] Computed 0 place invariants in 1 ms
[2020-05-21 22:45:45] [INFO ] Flatten gal took : 79 ms
[2020-05-21 22:45:45] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 2 ms.
[2020-05-21 22:45:45] [INFO ] Time to serialize gal into /home/mcc/execution/ReachabilityFireability.pnml.gal : 8 ms
[2020-05-21 22:45:45] [INFO ] Time to serialize properties into /home/mcc/execution/ReachabilityFireability.prop : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202005100927/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/ReachabilityFireability.pnml.gal, -t, CGAL, -reachable-file, ReachabilityFireability.prop, --nowitness], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202005100927/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/ReachabilityFireability.pnml.gal -t CGAL -reachable-file ReachabilityFireability.prop --nowitness
Loading property file ReachabilityFireability.prop.
Read [invariant] property : DNAwalker-PT-06track28RL-ReachabilityFireability-14 with value :((((((u0.A1<2)||(u2.A3<1))||((u0.A1>=2)&&(u8.A9>=1)))||((u11.A12>=2)&&(u20.A23>=1)))||((u1.A2>=2)&&(u2.A3>=1)))||((((u10.A11>=1)&&(u11.A12>=2))&&(u20.A23>=1))&&(u23.A27>=2)))
built 105 ordering constraints for composite.
SDD proceeding with computation, new max is 4
SDD proceeding with computation, new max is 8
SDD proceeding with computation, new max is 16
SDD proceeding with computation, new max is 32
SDD proceeding with computation, new max is 64
SDD proceeding with computation, new max is 128
SDD proceeding with computation, new max is 256
SDD proceeding with computation, new max is 512
[2020-05-21 22:45:45] [INFO ] Proved 25 variables to be positive in 230 ms
[2020-05-21 22:45:45] [INFO ] BMC solution for property DNAwalker-PT-06track28RL-ReachabilityFireability-14(UNSAT) depth K=3 took 255 ms
[2020-05-21 22:45:45] [INFO ] Computing symmetric may disable matrix : 213 transitions.
[2020-05-21 22:45:45] [INFO ] Computation of disable matrix completed :0/213 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
SDD proceeding with computation, new max is 1024
[2020-05-21 22:45:45] [INFO ] Computation of Complete disable matrix. took 30 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2020-05-21 22:45:45] [INFO ] Computing symmetric may enable matrix : 213 transitions.
[2020-05-21 22:45:45] [INFO ] Computation of Complete enable matrix. took 38 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2020-05-21 22:45:45] [INFO ] Proved 25 variables to be positive in 228 ms
SDD proceeding with computation, new max is 2048
[2020-05-21 22:45:45] [INFO ] Induction result is SAT, non conclusive we might be starting from unreachable statesDNAwalker-PT-06track28RL-ReachabilityFireability-14
[2020-05-21 22:45:45] [INFO ] KInduction solution for property DNAwalker-PT-06track28RL-ReachabilityFireability-14(SAT) depth K=0 took 29 ms
SDD proceeding with computation, new max is 4096
[2020-05-21 22:45:45] [INFO ] Computing symmetric co enabling matrix : 213 transitions.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst\_mod\_flat,5.93354e+07,0.553613,24872,1454,11,40857,144,293,65421,16,153,0
Total reachable state count : 59335356

Verifying 1 reachability properties.
Invariant property DNAwalker-PT-06track28RL-ReachabilityFireability-14 is true.
FORMULA DNAwalker-PT-06track28RL-ReachabilityFireability-14 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DNAwalker-PT-06track28RL-ReachabilityFireability-14,0,0.557488,25136,1,0,40857,144,315,65421,20,153,1975
[2020-05-21 22:45:45] [WARNING] Interrupting SMT solver.
ITS tools runner thread asked to quit. Dying gracefully.
java.lang.RuntimeException: SMT solver raised an exception or timeout :(error "Solver has unexpectedly terminated")
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.checkSat(NextBMCSolver.java:299)
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.verifyAssertion(NextBMCSolver.java:454)
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.verify(NextBMCSolver.java:437)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.runBMC(Gal2SMTFrontEnd.java:384)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.access$0(Gal2SMTFrontEnd.java:356)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd$1.run(Gal2SMTFrontEnd.java:163)
at java.base/java.lang.Thread.run(Thread.java:834)
[2020-05-21 22:45:45] [WARNING] Unexpected error occurred while running SMT. Was verifying DNAwalker-PT-06track28RL-ReachabilityFireability-14 SMT depth 4
java.lang.RuntimeException: java.lang.RuntimeException: SMT solver raised an exception or timeout :(error "Solver has unexpectedly terminated")
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.runBMC(Gal2SMTFrontEnd.java:410)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.access$0(Gal2SMTFrontEnd.java:356)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd$1.run(Gal2SMTFrontEnd.java:163)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.RuntimeException: SMT solver raised an exception or timeout :(error "Solver has unexpectedly terminated")
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.checkSat(NextBMCSolver.java:299)
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.verifyAssertion(NextBMCSolver.java:454)
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.verify(NextBMCSolver.java:437)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.runBMC(Gal2SMTFrontEnd.java:384)
... 3 more
[2020-05-21 22:45:45] [WARNING] SMT solver unexpectedly returned 'unknown' answer, retrying.
Skipping mayMatrices nes/nds Could not set logic :(error "Error writing to Z3 solver: java.io.IOException: Stream closed")
java.lang.RuntimeException: Could not set logic :(error "Error writing to Z3 solver: java.io.IOException: Stream closed")
at fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver.buildSolver(NecessaryEnablingsolver.java:104)
at fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver.computeCoEnablingMatrix(NecessaryEnablingsolver.java:381)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.printLabels(Gal2PinsTransformerNext.java:530)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.printDependencyMatrix(Gal2PinsTransformerNext.java:209)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.buildBodyFile(Gal2PinsTransformerNext.java:85)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.transform(Gal2PinsTransformerNext.java:831)
at fr.lip6.move.gal.application.LTSminRunner$1.run(LTSminRunner.java:73)
at java.base/java.lang.Thread.run(Thread.java:834)
[2020-05-21 22:45:45] [INFO ] During BMC, SMT solver timed out at depth 4
java.lang.RuntimeException: SMT solver raised an exception or timeout :(error "Failed to check-sat")
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.checkSat(NextBMCSolver.java:299)
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.checkSat(NextBMCSolver.java:307)
at fr.lip6.move.gal.gal2smt.bmc.KInductionSolver.verify(KInductionSolver.java:586)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.runKInduction(Gal2SMTFrontEnd.java:305)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.access$1(Gal2SMTFrontEnd.java:278)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd$2.run(Gal2SMTFrontEnd.java:170)
at java.base/java.lang.Thread.run(Thread.java:834)
[2020-05-21 22:45:45] [WARNING] Unexpected error occurred while running SMT. Was verifying DNAwalker-PT-06track28RL-ReachabilityFireability-14 K-induction depth 1
Exception in thread "Thread-5" java.lang.RuntimeException: java.lang.RuntimeException: SMT solver raised an exception or timeout :(error "Failed to check-sat")
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.runKInduction(Gal2SMTFrontEnd.java:343)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.access$1(Gal2SMTFrontEnd.java:278)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd$2.run(Gal2SMTFrontEnd.java:170)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.RuntimeException: SMT solver raised an exception or timeout :(error "Failed to check-sat")
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.checkSat(NextBMCSolver.java:299)
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.checkSat(NextBMCSolver.java:307)
at fr.lip6.move.gal.gal2smt.bmc.KInductionSolver.verify(KInductionSolver.java:586)
at fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd.runKInduction(Gal2SMTFrontEnd.java:305)
... 3 more
[2020-05-21 22:45:45] [INFO ] BMC solving timed out (3600000 secs) at depth 4
[2020-05-21 22:45:45] [INFO ] SMT solved 0/ 1 properties. Interrupting SMT analysis.
[2020-05-21 22:45:45] [INFO ] Built C files in 1067ms conformant to PINS in folder :/home/mcc/execution
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit//lts_install_dir//include, -I., -std=c99, -fPIC, -O2, model.c], workingDir=/home/mcc/execution]
WARNING : LTS min runner thread was asked to interrupt. Dying gracefully.

BK_STOP 1590101146017

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

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution ReachabilityFireability -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ /home/mcc/BenchKit//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination ReachabilityFireability -z3path /home/mcc/BenchKit//z3/bin/z3 -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6

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="DNAwalker-PT-06track28RL"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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 2-4028"
echo " Executing tool itstools"
echo " Input is DNAwalker-PT-06track28RL, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r066-tajo-158922813900127"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DNAwalker-PT-06track28RL.tgz
mv DNAwalker-PT-06track28RL execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;