Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2020-input.r187-oct2-158987942300216.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2020-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool itslola
Input is SafeBus-COL-06, examination is ReachabilityDeadlock
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r187-oct2-158987942300216
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 216K
-rw-r--r-- 1 mcc users 4.2K Apr 12 12:07 CTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Apr 12 12:07 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Apr 11 13:16 CTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 11 13:16 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 24 05:38 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.2K Apr 14 12:50 LTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Apr 28 14:02 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Apr 14 12:50 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 28 14:02 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K Apr 10 17:23 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 17K Apr 10 17:23 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Apr 9 23:50 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 15K Apr 9 23:50 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 10 22:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 10 22:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 24 05:38 equiv_pt
-rw-r--r-- 1 mcc users 3 Mar 24 05:38 instance
-rw-r--r-- 1 mcc users 5 Mar 24 05:38 iscolored
-rw-r--r-- 1 mcc users 42K Mar 24 05:38 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME ReachabilityDeadlock

=== Now, execution of the tool begins

BK_START 1591284467295

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2020-06-04 15:27:49] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityDeadlock, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 1800, -rebuildPNML]
[2020-06-04 15:27:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-06-04 15:27:49] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[2020-06-04 15:27:50] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 686 ms
[2020-06-04 15:27:50] [INFO ] sort/places :
Dom->AMC,wait_ack,
Dot->cable_free,ACK,T_out,R_tout,S_tout,FMCb,
It->Cpt2,Cpt1,msgl,cable_used,FMC,wait_cable,listen,RMC,PMC,MSG,wait_msg,loop_em,

[2020-06-04 15:27:50] [INFO ] Detected 1 constant HL places corresponding to 6 PT places.
[2020-06-04 15:27:50] [INFO ] Imported 20 HL places and 14 HL transitions for a total of 150 PT places and 2029.0 transition bindings in 20 ms.
[2020-06-04 15:27:50] [INFO ] Computed order based on color domains.
[2020-06-04 15:27:50] [INFO ] Unfolded HLPN to a Petri net with 150 places and 463 transitions in 28 ms.
[2020-06-04 15:27:50] [INFO ] Unfolded HLPN properties in 0 ms.
Deduced a syphon composed of 6 places in 2 ms
Reduce places removed 12 places and 12 transitions.
Parsed 1 properties from file /home/mcc/execution/ReachabilityDeadlock.xml in 46 ms.
Working with output stream class java.io.PrintStream
Built sparse matrix representations for Structural reductions in 3 ms.12617KB memory used
Starting structural reductions, iteration 0 : 138/138 places, 451/451 transitions.
Applied a total of 0 rules in 58 ms. Remains 138 /138 variables (removed 0) and now considering 451/451 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 138/138 places, 451/451 transitions.
Starting structural reductions, iteration 0 : 138/138 places, 451/451 transitions.
Applied a total of 0 rules in 23 ms. Remains 138 /138 variables (removed 0) and now considering 451/451 (removed 0) transitions.
[2020-06-04 15:27:50] [INFO ] Flow matrix only has 242 transitions (discarded 209 similar events)
// Phase 1: matrix 242 rows 138 cols
[2020-06-04 15:27:50] [INFO ] Computed 29 place invariants in 23 ms
[2020-06-04 15:27:51] [INFO ] Implicit Places using invariants in 410 ms returned [91, 92, 93, 94, 95, 96]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 450 ms to find 6 implicit places.
[2020-06-04 15:27:51] [INFO ] Redundant transitions in 20 ms returned []
[2020-06-04 15:27:51] [INFO ] Flow matrix only has 242 transitions (discarded 209 similar events)
// Phase 1: matrix 242 rows 132 cols
[2020-06-04 15:27:51] [INFO ] Computed 23 place invariants in 5 ms
[2020-06-04 15:27:51] [INFO ] Dead Transitions using invariants and state equation in 430 ms returned [31, 37, 43, 49, 55, 61, 68, 74, 80, 86, 92, 98, 105, 111, 117, 123, 129, 135, 142, 148, 154, 160, 166, 172, 179, 185, 191, 197, 203, 209, 216, 222, 228, 234, 240, 246]
Found 36 dead transitions using SMT.
Drop transitions removed 36 transitions
Dead transitions reduction (with SMT) removed 36 transitions :[246, 240, 234, 228, 222, 216, 209, 203, 197, 191, 185, 179, 172, 166, 160, 154, 148, 142, 135, 129, 123, 117, 111, 105, 98, 92, 86, 80, 74, 68, 61, 55, 49, 43, 37, 31]
Starting structural reductions, iteration 1 : 132/138 places, 415/451 transitions.
Performed 6 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 6 Pre rules applied. Total rules applied 0 place count 132 transition count 409
Deduced a syphon composed of 6 places in 1 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 0 with 12 rules applied. Total rules applied 12 place count 126 transition count 409
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: -114
Deduced a syphon composed of 6 places in 0 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 0 with 12 rules applied. Total rules applied 24 place count 120 transition count 523
Applied a total of 24 rules in 31 ms. Remains 120 /132 variables (removed 12) and now considering 523/415 (removed -108) transitions.
[2020-06-04 15:27:51] [INFO ] Flow matrix only has 350 transitions (discarded 173 similar events)
// Phase 1: matrix 350 rows 120 cols
[2020-06-04 15:27:51] [INFO ] Computed 23 place invariants in 4 ms
[2020-06-04 15:27:51] [INFO ] Implicit Places using invariants in 167 ms returned []
[2020-06-04 15:27:51] [INFO ] Flow matrix only has 350 transitions (discarded 173 similar events)
// Phase 1: matrix 350 rows 120 cols
[2020-06-04 15:27:51] [INFO ] Computed 23 place invariants in 4 ms
[2020-06-04 15:27:52] [INFO ] State equation strengthened by 43 read => feed constraints.
[2020-06-04 15:27:53] [INFO ] Implicit Places using invariants and state equation in 1630 ms returned []
Implicit Place search using SMT with State Equation took 1807 ms to find 0 implicit places.
Finished structural reductions, in 2 iterations. Remains : 120/138 places, 523/451 transitions.
Random walk for 1250000 steps, including 0 resets, run took 3033 ms (no deadlock found). (steps per millisecond=412 )
Random directed walk for 1250002 steps, including 0 resets, run took 2257 ms (no deadlock found). (steps per millisecond=553 )
[2020-06-04 15:27:58] [INFO ] Flow matrix only has 350 transitions (discarded 173 similar events)
// Phase 1: matrix 350 rows 120 cols
[2020-06-04 15:27:58] [INFO ] Computed 23 place invariants in 2 ms
[2020-06-04 15:27:59] [INFO ] [Real]Absence check using 11 positive place invariants in 4 ms returned sat
[2020-06-04 15:27:59] [INFO ] [Real]Absence check using 11 positive and 12 generalized place invariants in 6 ms returned sat
[2020-06-04 15:27:59] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-04 15:28:00] [INFO ] [Real]Absence check using state equation in 871 ms returned sat
[2020-06-04 15:28:00] [INFO ] Solution in real domain found non-integer solution.
[2020-06-04 15:28:00] [INFO ] [Nat]Absence check using 11 positive place invariants in 4 ms returned sat
[2020-06-04 15:28:00] [INFO ] [Nat]Absence check using 11 positive and 12 generalized place invariants in 5 ms returned sat
[2020-06-04 15:28:00] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-04 15:28:00] [INFO ] [Nat]Absence check using state equation in 195 ms returned sat
[2020-06-04 15:28:00] [INFO ] State equation strengthened by 43 read => feed constraints.
[2020-06-04 15:28:00] [INFO ] [Nat]Added 43 Read/Feed constraints in 76 ms returned sat
[2020-06-04 15:28:01] [INFO ] Deduced a trap composed of 20 places in 328 ms
[2020-06-04 15:28:01] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 375 ms
[2020-06-04 15:28:01] [INFO ] Computed and/alt/rep : 517/19494/344 causal constraints in 102 ms.
[2020-06-04 15:28:22] [INFO ] Added : 245 causal constraints over 49 iterations in 21176 ms. Result :unknown
Parikh directed walk for 124300 steps, including 1000 resets, run took 431 ms. (steps per millisecond=288 )
Random directed walk for 500000 steps, including 0 resets, run took 861 ms (no deadlock found). (steps per millisecond=580 )
Random walk for 500000 steps, including 0 resets, run took 1006 ms (no deadlock found). (steps per millisecond=497 )
Random directed walk for 500000 steps, including 0 resets, run took 917 ms (no deadlock found). (steps per millisecond=545 )
Random walk for 500000 steps, including 0 resets, run took 1033 ms (no deadlock found). (steps per millisecond=484 )
[2020-06-04 15:28:26] [INFO ] Flatten gal took : 142 ms
[2020-06-04 15:28:26] [INFO ] Export to MCC properties in file /home/mcc/execution/ReachabilityDeadlock.sr.xml took 1 ms.
[2020-06-04 15:28:26] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml took 4 ms.
info: Time: 1800 - MCC
vrfy: Checking ReachabilityDeadlock @ SafeBus-COL-06 @ 1770 seconds

FORMULA ReachabilityDeadlock FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT SAT_SMT STATE_COMPRESSION STUBBORN_SETS SYMMETRIES TOPOLOGICAL USE_NUPN UNFOLDING_TO_PT
vrfy: finished
info: timeLeft: 1677
rslt: Output for ReachabilityDeadlock @ SafeBus-COL-06

{
"build":
{
"architecture": 64,
"assertions": false,
"build_hostname": "mcc2019",
"build_system": "x86_64-unknown-linux-gnu",
"optimizations": true,
"package_version": "2.0",
"svn_version": "3189M"
},
"call":
{
"exec_host": "mcc2020",
"markinglimit": null,
"parameters":
[
"--pnmlnet",
"model.pnml",
"--xmlformula",
"--formula=ReachabilityDeadlock.xml",
"--mcc",
"--donotcomputecapacities",
"--encoder=simplecompressed",
"--check=modelchecking",
"--stubborn=combined",
"--siphontrap=par",
"--siphondepth=10",
"--findpath=par",
"--retrylimit=0",
"--depthlimit=1000000",
"--symmetry",
"--symmtimelimit=300",
"--threads=2",
"--symmetrydepth=1073741824",
"--timelimit=1770",
"--json=ReachabilityDeadlock.json",
"--jsoninclude=formula,formulastat,net"
],
"starttime": "Thu Jun 4 15:28:27 2020
",
"timelimit": 1770
},
"child": null,
"exit":
{
"error": null,
"memory": 219804,
"runtime": 93.000000,
"signal": null,
"timelimitreached": false
},
"files":
{
"formula": "ReachabilityDeadlock.xml",
"net": "model.pnml"
},
"formula":
{
"count":
{
"A": 0,
"E": 1,
"F": 1,
"G": 0,
"U": 0,
"X": 0,
"aconj": 0,
"adisj": 0,
"aneg": 0,
"comp": 0,
"cont": 0,
"dl": 1,
"fir": 0,
"nodl": 0,
"place_references": 0,
"taut": 0,
"tconj": 0,
"tdisj": 0,
"tneg": 0,
"transition_references": 0,
"unfir": 0,
"visible_places": 0,
"visible_transitions": 0
},
"processed": "E (F (DEADLOCK))",
"processed_size": 16,
"rewrites": 1,
"skeleton": "E(F(**))"
},
"net":
{
"arcs": 2908,
"conflict_clusters": 7,
"places": 138,
"places_significant": 109,
"singleton_clusters": 0,
"transitions": 451
},
"result":
{
"edges": 13563018,
"markings": 3485922,
"produced_by": "state space",
"value": false
},
"task":
{
"findpath":
{
"depthlimit": 1000000,
"retrylimit": null,
"stubborn":
{
"type": "reachability preserving/insertion"
},
"threads": 2
},
"search":
{
"store":
{
"encoder": "simple compression",
"type": "prefix"
},
"stubborn":
{
"type": "reachability preserving/insertion"
},
"symmetry":
{
"card": 720.000000,
"composed": 28,
"dead_branches": 0,
"generators": 35,
"interrupted": false,
"real_computed": 7,
"timelimit": 300
},
"threads": 2,
"type": "dfs"
},
"type": "reachability",
"workflow": "findpath||search"
}
}
lola: LoLA will run for 1770 seconds at most (--timelimit)
lola: NET
lola: input: PNML file (--pnml)
lola: reading net from model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file model.pnml
lola: 589/268435456 symbol table entries, 0 collisions
lola: preprocessing...
lola: Size of bit vector: 4416
lola: finding significant places
lola: 138 places, 451 transitions, 109 significant places
lola: compute conflict clusters
lola: computed conflict clusters
lola: Computing conflicting sets
lola: Computing back conflicting sets
lola: TASK
lola: Reading formula in XML format (--xmlformula)
lola: reading pnml
lola: reading formula from ReachabilityDeadlock.xml
lola: E (F (DEADLOCK))
lola: checking reachability
lola: Planning: workflow for reachability check: findpath||search (--findpath=par)
lola: rewrite Frontend/Parser/formula_rewrite.k:711
lola: processed formula: E (F (DEADLOCK))
lola: processed formula length: 16
lola: 1 rewrites
lola: closed formula file ReachabilityDeadlock.xml
lola: STORE
lola: using a simple compression encoder (--encoder=simplecompressed)
lola: using a prefix tree store (--store=prefix)
lola: SEARCH (state space)
lola: state space: using reachability graph (--search=depth)
lola: state space: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: rewrite Frontend/Parser/formula_rewrite.k:711
lola: SEARCH (findpath)
lola: findpath: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: RUNNING
lola: findpath: starting randomized, memory-less exploration (--findpath)
lola: findpath: searching for paths with maximal depth 1000000 (--depthlimit)
lola: findpath: no retry limit given (--retrylimit)
lola: findpath: transitions are chosen hash-driven
lola: computing symmetries (--symmetry)
lola: time limit for symmetry computation of 300 seconds given (--symmtimelimit)
lola: computed 35 generators (7 in search tree, 28 by composition)
lola: representing 720 symmetries
lola: 0 dead branches visited in search tree
lola: 1 tries, 232807 fired transitions, 0 secs || 180398 markings, 331988 edges, 36080 markings/sec, 0 secs
lola: 1 tries, 481614 fired transitions, 5 secs || 353304 markings, 701590 edges, 34581 markings/sec, 5 secs
lola: 1 tries, 837737 fired transitions, 10 secs || 591443 markings, 1253516 edges, 47628 markings/sec, 10 secs
lola: 2 tries, 1199447 fired transitions, 15 secs || 819488 markings, 1825261 edges, 45609 markings/sec, 15 secs
lola: 2 tries, 1569712 fired transitions, 20 secs || 1046344 markings, 2432762 edges, 45371 markings/sec, 20 secs
lola: 2 tries, 1942263 fired transitions, 25 secs || 1278581 markings, 3090586 edges, 46447 markings/sec, 25 secs
lola: 3 tries, 2317745 fired transitions, 30 secs || 1515972 markings, 3801736 edges, 47478 markings/sec, 30 secs
lola: 3 tries, 2695376 fired transitions, 35 secs || 1746726 markings, 4536870 edges, 46151 markings/sec, 35 secs
lola: 4 tries, 3038072 fired transitions, 40 secs || 1950711 markings, 5216591 edges, 40797 markings/sec, 40 secs
lola: 4 tries, 3295777 fired transitions, 45 secs || 2099148 markings, 5731881 edges, 29687 markings/sec, 45 secs
lola: 4 tries, 3566893 fired transitions, 50 secs || 2238302 markings, 6232943 edges, 27831 markings/sec, 50 secs
lola: 4 tries, 3890693 fired transitions, 55 secs || 2415666 markings, 6908956 edges, 35473 markings/sec, 55 secs
lola: 5 tries, 4270522 fired transitions, 60 secs || 2621808 markings, 7744953 edges, 41228 markings/sec, 60 secs
lola: 5 tries, 4651158 fired transitions, 65 secs || 2823207 markings, 8628943 edges, 40280 markings/sec, 65 secs
lola: 6 tries, 5023530 fired transitions, 70 secs || 3017834 markings, 9518232 edges, 38925 markings/sec, 70 secs
lola: 6 tries, 5407298 fired transitions, 75 secs || 3220630 markings, 10432604 edges, 40559 markings/sec, 75 secs
lola: 6 tries, 5814729 fired transitions, 80 secs || 3419047 markings, 11603051 edges, 39683 markings/sec, 80 secs
lola: RESULT
lola: result: no
lola: produced by: state space
lola: The predicate is unreachable.
lola: 3485922 markings, 13563018 edges
lola: memory consumption: 219804 KB
lola: time consumption: 93 seconds
lola: print data as JSON (--json)
lola: writing JSON to ReachabilityDeadlock.json
lola: closed JSON file ReachabilityDeadlock.json
rslt: finished

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

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="SafeBus-COL-06"
export BK_EXAMINATION="ReachabilityDeadlock"
export BK_TOOL="itslola"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 itslola"
echo " Input is SafeBus-COL-06, examination is ReachabilityDeadlock"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r187-oct2-158987942300216"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

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