About the Execution of LTSMin+red for DNAwalker-PT-17redondantChoiceL
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
16222.907 | 3600000.00 | 13913488.00 | 17733.50 | ???F?????F?????? | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2023-input.r105-tall-167814482001001.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is DNAwalker-PT-17redondantChoiceL, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r105-tall-167814482001001
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 828K
-rw-r--r-- 1 mcc users 8.6K Feb 25 13:00 CTLCardinality.txt
-rw-r--r-- 1 mcc users 100K Feb 25 13:00 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.5K Feb 25 13:00 CTLFireability.txt
-rw-r--r-- 1 mcc users 72K Feb 25 13:00 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:55 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Feb 25 15:55 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Feb 25 15:55 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:55 LTLFireability.xml
-rw-r--r-- 1 mcc users 17K Feb 25 13:02 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 192K Feb 25 13:02 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13K Feb 25 13:01 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 107K Feb 25 13:01 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:55 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:55 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 19 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 211K 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 DNAwalker-PT-17redondantChoiceL-CTLCardinality-00
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-01
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-02
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-03
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-04
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-05
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-06
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-07
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-08
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-09
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-10
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-11
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-12
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-13
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-14
FORMULA_NAME DNAwalker-PT-17redondantChoiceL-CTLCardinality-15
=== Now, execution of the tool begins
BK_START 1678406395444
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=DNAwalker-PT-17redondantChoiceL
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-09 23:59:57] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-09 23:59:57] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-09 23:59:57] [INFO ] Load time of PNML (sax parser for PT used): 69 ms
[2023-03-09 23:59:57] [INFO ] Transformed 43 places.
[2023-03-09 23:59:57] [INFO ] Transformed 490 transitions.
[2023-03-09 23:59:57] [INFO ] Parsed PT model containing 43 places and 490 transitions and 1438 arcs in 136 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 15 ms.
Support contains 41 out of 43 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 17 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-09 23:59:57] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
// Phase 1: matrix 489 rows 43 cols
[2023-03-09 23:59:57] [INFO ] Computed 0 place invariants in 14 ms
[2023-03-09 23:59:57] [INFO ] Dead Transitions using invariants and state equation in 370 ms found 0 transitions.
[2023-03-09 23:59:57] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-09 23:59:57] [INFO ] Invariant cache hit.
[2023-03-09 23:59:57] [INFO ] Implicit Places using invariants in 26 ms returned []
[2023-03-09 23:59:57] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-09 23:59:57] [INFO ] Invariant cache hit.
[2023-03-09 23:59:57] [INFO ] State equation strengthened by 161 read => feed constraints.
[2023-03-09 23:59:57] [INFO ] Implicit Places using invariants and state equation in 231 ms returned []
Implicit Place search using SMT with State Equation took 258 ms to find 0 implicit places.
[2023-03-09 23:59:57] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-09 23:59:57] [INFO ] Invariant cache hit.
[2023-03-09 23:59:58] [INFO ] Dead Transitions using invariants and state equation in 190 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 869 ms. Remains : 43/43 places, 490/490 transitions.
Support contains 41 out of 43 places after structural reductions.
[2023-03-09 23:59:58] [INFO ] Flatten gal took : 50 ms
[2023-03-09 23:59:58] [INFO ] Flatten gal took : 29 ms
[2023-03-09 23:59:58] [INFO ] Input system was already deterministic with 490 transitions.
Incomplete random walk after 10000 steps, including 385 resets, run finished after 548 ms. (steps per millisecond=18 ) properties (out of 99) seen :78
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 21) seen :0
Incomplete Best-First random walk after 1001 steps, including 3 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 21) seen :0
Running SMT prover for 21 properties.
[2023-03-09 23:59:59] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-09 23:59:59] [INFO ] Invariant cache hit.
[2023-03-09 23:59:59] [INFO ] After 127ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:21
[2023-03-10 00:00:24] [INFO ] After 24761ms SMT Verify possible using state equation in natural domain returned unsat :12 sat :6
[2023-03-10 00:00:24] [INFO ] State equation strengthened by 161 read => feed constraints.
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:251)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:642)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMTIncremental(DeadlockTester.java:350)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMT(DeadlockTester.java:223)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.applyReductions(ReachabilitySolver.java:95)
at fr.lip6.move.gal.application.solver.logic.AtomicReducerSR.checkAtomicPropositionsLogic(AtomicReducerSR.java:105)
at fr.lip6.move.gal.application.solver.logic.AtomicReducerSR.strongReductions(AtomicReducerSR.java:44)
at fr.lip6.move.gal.application.solver.ltl.LTLPropertySolver.preSolveForLogic(LTLPropertySolver.java:176)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:626)
at fr.lip6.move.gal.application.Application.start(Application.java:178)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:45)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
at org.eclipse.equinox.launcher.Main.main(Main.java:1440)
[2023-03-10 00:00:24] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
[2023-03-10 00:00:24] [INFO ] After 25022ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :0 real:21
Fused 21 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 19 out of 43 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 43/43 places, 490/490 transitions.
Graph (complete) has 478 edges and 43 vertex of which 42 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.2 ms
Discarding 1 places :
Also discarding 1 output transitions
Drop transitions removed 1 transitions
Drop transitions removed 13 transitions
Reduce isomorphic transitions removed 13 transitions.
Iterating post reduction 0 with 13 rules applied. Total rules applied 14 place count 42 transition count 476
Reduce places removed 6 places and 6 transitions.
Iterating global reduction 1 with 6 rules applied. Total rules applied 20 place count 36 transition count 470
Applied a total of 20 rules in 40 ms. Remains 36 /43 variables (removed 7) and now considering 470/490 (removed 20) transitions.
// Phase 1: matrix 470 rows 36 cols
[2023-03-10 00:00:24] [INFO ] Computed 0 place invariants in 10 ms
[2023-03-10 00:00:24] [INFO ] Dead Transitions using invariants and state equation in 253 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 297 ms. Remains : 36/43 places, 470/490 transitions.
Incomplete random walk after 10000 steps, including 406 resets, run finished after 197 ms. (steps per millisecond=50 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 47 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 35 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 37 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 36 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 36 resets, run finished after 21 ms. (steps per millisecond=476 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 37 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 39 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 38 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 40 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 9) seen :0
Interrupted probabilistic random walk after 691692 steps, run timeout after 3001 ms. (steps per millisecond=230 ) properties seen :{}
Probabilistic random walk after 691692 steps, saw 117091 distinct states, run finished after 3004 ms. (steps per millisecond=230 ) properties seen :0
Running SMT prover for 9 properties.
[2023-03-10 00:00:28] [INFO ] Invariant cache hit.
[2023-03-10 00:00:28] [INFO ] After 111ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:9
[2023-03-10 00:00:53] [INFO ] After 25013ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :0
Fused 9 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 19 out of 36 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 36/36 places, 470/470 transitions.
Applied a total of 0 rules in 22 ms. Remains 36 /36 variables (removed 0) and now considering 470/470 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22 ms. Remains : 36/36 places, 470/470 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 36/36 places, 470/470 transitions.
Applied a total of 0 rules in 9 ms. Remains 36 /36 variables (removed 0) and now considering 470/470 (removed 0) transitions.
[2023-03-10 00:00:53] [INFO ] Invariant cache hit.
[2023-03-10 00:00:53] [INFO ] Implicit Places using invariants in 35 ms returned []
[2023-03-10 00:00:53] [INFO ] Invariant cache hit.
[2023-03-10 00:00:53] [INFO ] State equation strengthened by 75 read => feed constraints.
[2023-03-10 00:00:53] [INFO ] Implicit Places using invariants and state equation in 548 ms returned [35]
Discarding 1 places :
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Implicit Place search using SMT with State Equation took 596 ms to find 1 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 35/36 places, 469/470 transitions.
Applied a total of 0 rules in 13 ms. Remains 35 /35 variables (removed 0) and now considering 469/469 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 619 ms. Remains : 35/36 places, 469/470 transitions.
Incomplete random walk after 10000 steps, including 393 resets, run finished after 327 ms. (steps per millisecond=30 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 46 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 36 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 40 resets, run finished after 19 ms. (steps per millisecond=526 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 36 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 33 resets, run finished after 19 ms. (steps per millisecond=526 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 37 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 39 resets, run finished after 23 ms. (steps per millisecond=434 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10000 steps, including 37 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 36 resets, run finished after 44 ms. (steps per millisecond=227 ) properties (out of 9) seen :0
Interrupted probabilistic random walk after 660834 steps, run timeout after 3001 ms. (steps per millisecond=220 ) properties seen :{}
Probabilistic random walk after 660834 steps, saw 112792 distinct states, run finished after 3001 ms. (steps per millisecond=220 ) properties seen :0
Running SMT prover for 9 properties.
// Phase 1: matrix 469 rows 35 cols
[2023-03-10 00:00:57] [INFO ] Computed 0 place invariants in 3 ms
[2023-03-10 00:00:57] [INFO ] After 81ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:9
[2023-03-10 00:01:22] [INFO ] After 24974ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :6
[2023-03-10 00:01:22] [INFO ] State equation strengthened by 75 read => feed constraints.
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:251)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:642)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMTIncremental(DeadlockTester.java:350)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMT(DeadlockTester.java:223)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.applyReductions(ReachabilitySolver.java:95)
at fr.lip6.move.gal.application.solver.logic.AtomicReducerSR.checkAtomicPropositionsLogic(AtomicReducerSR.java:105)
at fr.lip6.move.gal.application.solver.logic.AtomicReducerSR.strongReductions(AtomicReducerSR.java:44)
at fr.lip6.move.gal.application.solver.ltl.LTLPropertySolver.preSolveForLogic(LTLPropertySolver.java:176)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:626)
at fr.lip6.move.gal.application.Application.start(Application.java:178)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:45)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
at org.eclipse.equinox.launcher.Main.main(Main.java:1440)
[2023-03-10 00:01:22] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
[2023-03-10 00:01:22] [INFO ] After 25014ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :0 real:9
Fused 9 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 19 out of 35 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 35/35 places, 469/469 transitions.
Applied a total of 0 rules in 8 ms. Remains 35 /35 variables (removed 0) and now considering 469/469 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 35/35 places, 469/469 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 35/35 places, 469/469 transitions.
Applied a total of 0 rules in 5 ms. Remains 35 /35 variables (removed 0) and now considering 469/469 (removed 0) transitions.
[2023-03-10 00:01:22] [INFO ] Invariant cache hit.
[2023-03-10 00:01:22] [INFO ] Implicit Places using invariants in 45 ms returned []
[2023-03-10 00:01:22] [INFO ] Invariant cache hit.
[2023-03-10 00:01:22] [INFO ] State equation strengthened by 75 read => feed constraints.
[2023-03-10 00:01:23] [INFO ] Implicit Places using invariants and state equation in 495 ms returned []
Implicit Place search using SMT with State Equation took 551 ms to find 0 implicit places.
[2023-03-10 00:01:23] [INFO ] Redundant transitions in 34 ms returned []
[2023-03-10 00:01:23] [INFO ] Invariant cache hit.
[2023-03-10 00:01:23] [INFO ] Dead Transitions using invariants and state equation in 124 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 720 ms. Remains : 35/35 places, 469/469 transitions.
Applied a total of 0 rules in 5 ms. Remains 35 /35 variables (removed 0) and now considering 469/469 (removed 0) transitions.
Running SMT prover for 9 properties.
[2023-03-10 00:01:23] [INFO ] Invariant cache hit.
[2023-03-10 00:01:23] [INFO ] After 52ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:9
[2023-03-10 00:02:15] [INFO ] After 52308ms SMT Verify possible using all constraints in natural domain returned unsat :5 sat :0
Successfully simplified 17 atomic propositions for a total of 16 simplifications.
Initial state reduction rules removed 1 formulas.
FORMULA DNAwalker-PT-17redondantChoiceL-CTLCardinality-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-10 00:02:15] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2023-03-10 00:02:15] [INFO ] Flatten gal took : 24 ms
FORMULA DNAwalker-PT-17redondantChoiceL-CTLCardinality-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-10 00:02:15] [INFO ] Flatten gal took : 19 ms
[2023-03-10 00:02:15] [INFO ] Input system was already deterministic with 490 transitions.
Computed a total of 43 stabilizing places and 488 stable transitions
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 2 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:15] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
// Phase 1: matrix 489 rows 43 cols
[2023-03-10 00:02:15] [INFO ] Computed 0 place invariants in 2 ms
[2023-03-10 00:02:15] [INFO ] Dead Transitions using invariants and state equation in 138 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 141 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:15] [INFO ] Flatten gal took : 16 ms
[2023-03-10 00:02:15] [INFO ] Flatten gal took : 17 ms
[2023-03-10 00:02:15] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 13 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:15] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:15] [INFO ] Invariant cache hit.
[2023-03-10 00:02:16] [INFO ] Dead Transitions using invariants and state equation in 146 ms found 0 transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 161 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 15 ms
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 15 ms
[2023-03-10 00:02:16] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 8 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:16] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:16] [INFO ] Invariant cache hit.
[2023-03-10 00:02:16] [INFO ] Dead Transitions using invariants and state equation in 151 ms found 0 transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 161 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:16] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 10 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:16] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:16] [INFO ] Invariant cache hit.
[2023-03-10 00:02:16] [INFO ] Dead Transitions using invariants and state equation in 146 ms found 0 transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 159 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 11 ms
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:16] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 2 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:16] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:16] [INFO ] Invariant cache hit.
[2023-03-10 00:02:16] [INFO ] Dead Transitions using invariants and state equation in 158 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 170 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 11 ms
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:16] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 1 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:16] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:16] [INFO ] Invariant cache hit.
[2023-03-10 00:02:16] [INFO ] Dead Transitions using invariants and state equation in 179 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 181 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 10 ms
[2023-03-10 00:02:16] [INFO ] Flatten gal took : 11 ms
[2023-03-10 00:02:17] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 1 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:17] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:17] [INFO ] Invariant cache hit.
[2023-03-10 00:02:17] [INFO ] Dead Transitions using invariants and state equation in 324 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 328 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:17] [INFO ] Flatten gal took : 11 ms
[2023-03-10 00:02:17] [INFO ] Flatten gal took : 10 ms
[2023-03-10 00:02:17] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 1 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:17] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:17] [INFO ] Invariant cache hit.
[2023-03-10 00:02:17] [INFO ] Dead Transitions using invariants and state equation in 235 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 239 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:17] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:17] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:17] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 1 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:17] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:17] [INFO ] Invariant cache hit.
[2023-03-10 00:02:17] [INFO ] Dead Transitions using invariants and state equation in 234 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 235 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:17] [INFO ] Flatten gal took : 9 ms
[2023-03-10 00:02:17] [INFO ] Flatten gal took : 15 ms
[2023-03-10 00:02:17] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 2 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:17] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:17] [INFO ] Invariant cache hit.
[2023-03-10 00:02:18] [INFO ] Dead Transitions using invariants and state equation in 211 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 215 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 12 ms
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 14 ms
[2023-03-10 00:02:18] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 8 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:18] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:18] [INFO ] Invariant cache hit.
[2023-03-10 00:02:18] [INFO ] Dead Transitions using invariants and state equation in 143 ms found 0 transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 152 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 8 ms
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 8 ms
[2023-03-10 00:02:18] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 2 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:18] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:18] [INFO ] Invariant cache hit.
[2023-03-10 00:02:18] [INFO ] Dead Transitions using invariants and state equation in 175 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 179 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 7 ms
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 9 ms
[2023-03-10 00:02:18] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 2 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:18] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:18] [INFO ] Invariant cache hit.
[2023-03-10 00:02:18] [INFO ] Dead Transitions using invariants and state equation in 149 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 152 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 8 ms
[2023-03-10 00:02:18] [INFO ] Flatten gal took : 8 ms
[2023-03-10 00:02:18] [INFO ] Input system was already deterministic with 490 transitions.
Starting structural reductions in LTL mode, iteration 0 : 43/43 places, 490/490 transitions.
Applied a total of 0 rules in 1 ms. Remains 43 /43 variables (removed 0) and now considering 490/490 (removed 0) transitions.
[2023-03-10 00:02:18] [INFO ] Flow matrix only has 489 transitions (discarded 1 similar events)
[2023-03-10 00:02:18] [INFO ] Invariant cache hit.
[2023-03-10 00:02:18] [INFO ] Dead Transitions using invariants and state equation in 140 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 144 ms. Remains : 43/43 places, 490/490 transitions.
[2023-03-10 00:02:19] [INFO ] Flatten gal took : 7 ms
[2023-03-10 00:02:19] [INFO ] Flatten gal took : 9 ms
[2023-03-10 00:02:19] [INFO ] Input system was already deterministic with 490 transitions.
[2023-03-10 00:02:19] [INFO ] Flatten gal took : 9 ms
[2023-03-10 00:02:19] [INFO ] Flatten gal took : 9 ms
[2023-03-10 00:02:19] [INFO ] Export to MCC of 14 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 2 ms.
[2023-03-10 00:02:19] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 43 places, 490 transitions and 1438 arcs took 2 ms.
Total runtime 142013 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/588/ctl_0_ --ctl=/tmp/588/ctl_1_ --ctl=/tmp/588/ctl_2_ --ctl=/tmp/588/ctl_3_ --ctl=/tmp/588/ctl_4_ --ctl=/tmp/588/ctl_5_ --ctl=/tmp/588/ctl_6_ --ctl=/tmp/588/ctl_7_ --ctl=/tmp/588/ctl_8_ --ctl=/tmp/588/ctl_9_ --ctl=/tmp/588/ctl_10_ --ctl=/tmp/588/ctl_11_ --ctl=/tmp/588/ctl_12_ --ctl=/tmp/588/ctl_13_ --mu-par --mu-opt
TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16393216 kB
MemFree: 223572 kB
After kill :
MemTotal: 16393216 kB
MemFree: 16255908 kB
BK_TIME_CONFINEMENT_REACHED
--------------------
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
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-17redondantChoiceL"
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 DNAwalker-PT-17redondantChoiceL, 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 r105-tall-167814482001001"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DNAwalker-PT-17redondantChoiceL.tgz
mv DNAwalker-PT-17redondantChoiceL 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 '
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 ;