About the Execution of 2025-gold for DBSingleClientW-PT-d1m09
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 3845.888 | 176905.00 | 500404.00 | 482.60 | T | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2026-input.r096-smll-177946996400112.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is DBSingleClientW-PT-d1m09, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r096-smll-177946996400112
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 820K
-rw-r--r-- 1 mcc users 7.4K Mar 6 18:20 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Mar 6 18:20 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K Mar 6 18:20 CTLFireability.txt
-rw-r--r-- 1 mcc users 56K Mar 6 18:20 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Mar 15 08:48 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Mar 15 08:48 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Mar 15 08:49 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 15 08:49 LTLFireability.xml
-rw-r--r-- 1 mcc users 7.0K Mar 6 18:20 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 61K Mar 6 18:20 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.8K Mar 6 18:20 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 74K Mar 6 18:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 08:49 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 08:49 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 432K Mar 3 18:30 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 QuasiLiveness
=== Now, execution of the tool begins
BK_START 1779529644968
Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=DBSingleClientW-PT-d1m09
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202505121319
[2026-05-23 09:47:27] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-23 09:47:27] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 09:47:27] [INFO ] Load time of PNML (sax parser for PT used): 227 ms
[2026-05-23 09:47:27] [INFO ] Transformed 1440 places.
[2026-05-23 09:47:27] [INFO ] Transformed 672 transitions.
[2026-05-23 09:47:27] [INFO ] Parsed PT model containing 1440 places and 672 transitions and 2688 arcs in 401 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 1440/1440 places, 672/672 transitions.
Reduce places removed 1114 places and 0 transitions.
Ensure Unique test removed 80 transitions
Reduce isomorphic transitions removed 80 transitions.
Iterating post reduction 0 with 1194 rules applied. Total rules applied 1194 place count 326 transition count 592
Applied a total of 1194 rules in 62 ms. Remains 326 /1440 variables (removed 1114) and now considering 592/672 (removed 80) transitions.
// Phase 1: matrix 592 rows 326 cols
[2026-05-23 09:47:27] [INFO ] Computed 2 invariants in 42 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 09:47:28] [INFO ] Implicit Places using invariants in 974 ms returned []
[2026-05-23 09:47:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 09:47:29] [INFO ] State equation strengthened by 338 read => feed constraints.
[2026-05-23 09:47:32] [INFO ] Implicit Places using invariants and state equation in 3433 ms returned []
Implicit Place search using SMT with State Equation took 4472 ms to find 0 implicit places.
Running 591 sub problems to find dead transitions.
[2026-05-23 09:47:32] [INFO ] Invariant cache hit.
[2026-05-23 09:47:32] [INFO ] State equation strengthened by 338 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/325 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 591 unsolved
At refinement iteration 1 (OVERLAPS) 1/326 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 591 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/326 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 591 unsolved
Error getting values : (error "ParserException while parsing response: ((s0 0.0)
(s1 1.0)
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(s33 0.0)
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(s36 0.0)
(s37 0.0)
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(s40 0.0)
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(s42 0.0)
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(s46 0.0)
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(s59 0.0)
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(s61 0.0)
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(s63 0.0)
(s64 0.0)
(s65 0.0)
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(s68 0.0)
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(s70 0.0)
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(s74 0.0)
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(s83 0.0)
(s84 0.0)
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(s87 0.0)
(s88 0.0)
(s89 0.0)
(s90 0.0)
(s91 0.0)
(s92 0.0)
(s93 0.0)
(s94 0.0)
(s95 0.0)
(s96 0.0)
(s97 0.0)
(s98 0.0)
(s99 0.0)
(s100 0.0)
(s101 0.0)
(s102 0.0)
(s103 0.0)
(s104 0.0)
(s105 0.0)
(s106 0.0)
(s107 0.0)
(s108 0.0)
(s109 0.0)
(s110 0.0)
(s111 0.0)
(s112 0.0)
(s113 0.0)
(s114 0.0)
(s115 0.0)
(s116 0.0)
(s117 0.0)
(s118 0.0)
(s119 0.0)
(s120 0.0)
(s121 0.0)
(s122 0.0)
(s123 0.0)
(s124 0.0)
(s125 0.0)
(s126 0.0)
(s127 0.0)
(s128 0.0)
(s129 1.0)
(s130 1.0)
(s131 1.0)
(s132 1.0)
(s133 1.0)
(s134 1.0)
(s135 1.0)
(s136 1.0)
(s137 1.0)
(s138 1.0)
(s139 1.0)
(s140 1.0)
(s141 1.0)
(s142 1.0)
(s143 1.0)
(s144 1.0)
(s145 1.0)
(s146 1.0)
(s147 1.0)
(s148 1.0)
(s149 1.0)
(s150 1.0)
(s151 1.0)
(s152 1.0)
(s153 1.0)
(s154 1.0)
(s155 1.0)
(s156 1.0)
(s157 1.0)
(s158 1.0)
(s159 1.0)
(s160 1.0)
(s161 1.0)
(s162 1.0)
(s163 1.0)
(s164 1.0)
(s165 1.0)
(s166 1.0)
(s167 1.0)
(s168 1.0)
(s169 1.0)
(s170 1.0)
(s171 1.0)
(s172 1.0)
(s173 1.0)
(s174 1.0)
(s175 1.0)
(s176 1.0)
(s177 1.0)
(s178 1.0)
(s179 1.0)
(s180 1.0)
(s181 1.0)
(s182 1.0)
(s183 timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 3 (INCLUDED_ONLY) 0/326 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 591 unsolved
SMT process timed out in 31783ms, After SMT, problems are : Problem set: 0 solved, 591 unsolved
Search for dead transitions found 0 dead transitions in 31816ms
Starting structural reductions in LIVENESS mode, iteration 1 : 326/1440 places, 592/672 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 36394 ms. Remains : 326/1440 places, 592/672 transitions.
Discarding 275 transitions out of 592. Remains 317
Initial state reduction rules removed 1 formulas.
[2026-05-23 09:48:05] [INFO ] Flatten gal took : 423 ms
[2026-05-23 09:48:05] [INFO ] Flatten gal took : 69 ms
RANDOM walk for 40000 steps (9099 resets) in 6027 ms. (6 steps per ms) remains 252/316 properties
BEST_FIRST walk for 403 steps (15 resets) in 21 ms. (18 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (17 resets) in 17 ms. (22 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (19 resets) in 13 ms. (28 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (22 resets) in 28 ms. (13 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (17 resets) in 30 ms. (13 steps per ms) remains 252/252 properties
[2026-05-23 09:48:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9624170647855500231.gal : 90 ms
BEST_FIRST walk for 401 steps (17 resets) in 30 ms. (12 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (25 resets) in 31 ms. (12 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (14 resets) in 25 ms. (15 steps per ms) remains 252/252 properties
[2026-05-23 09:48:06] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9505868046375786479.prop : 15 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality9624170647855500231.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9505868046375786479.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 404 steps (17 resets) in 36 ms. (10 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (19 resets) in 32 ms. (12 steps per ms) remains 252/252 properties
BEST_FIRST walk for 401 steps (17 resets) in 27 ms. (14 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (16 resets) in 21 ms. (18 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (21 resets) in 21 ms. (18 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (20 resets) in 23 ms. (16 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (15 resets) in 15 ms. (25 steps per ms) remains 252/252 properties
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
BEST_FIRST walk for 404 steps (17 resets) in 15 ms. (25 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (17 resets) in 17 ms. (22 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (18 resets) in 17 ms. (22 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (20 resets) in 19 ms. (20 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (20 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (19 resets) in 15 ms. (25 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (16 resets) in 14 ms. (26 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (17 resets) in 8 ms. (44 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (22 resets) in 12 ms. (30 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (20 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (21 resets) in 14 ms. (26 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (19 resets) in 18 ms. (21 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (15 resets) in 15 ms. (25 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (17 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (19 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (18 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (18 resets) in 9 ms. (40 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (16 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (18 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (18 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (20 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (20 resets) in 15 ms. (25 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (21 resets) in 8 ms. (44 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (16 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (18 resets) in 12 ms. (30 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (20 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (19 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (25 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (22 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (19 resets) in 10 ms. (36 steps per ms) remains 252/252 properties
BEST_FIRST walk for 402 steps (19 resets) in 12 ms. (30 steps per ms) remains 252/252 properties
BEST_FIRST walk for 404 steps (21 resets) in 12 ms. (31 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (19 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 403 steps (17 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
BEST_FIRST walk for 401 steps (23 resets) in 11 ms. (33 steps per ms) remains 252/252 properties
Loading property file /tmp/ReachabilityCardinality9505868046375786479.prop.
[2026-05-23 09:48:06] [INFO ] Invariant cache hit.
[2026-05-23 09:48:06] [INFO ] State equation strengthened by 338 read => feed constraints.
SDD proceeding with computation,252 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,252 properties remain. new max is 8
SDD size :5 after 20
SDD proceeding with computation,252 properties remain. new max is 16
SDD size :20 after 46
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
SDD proceeding with computation,252 properties remain. new max is 32
SDD size :46 after 72
SDD proceeding with computation,252 properties remain. new max is 64
SDD size :72 after 96
SDD proceeding with computation,252 properties remain. new max is 128
SDD size :96 after 148
SDD proceeding with computation,252 properties remain. new max is 256
SDD size :148 after 224
SDD proceeding with computation,252 properties remain. new max is 512
SDD size :224 after 362
SDD proceeding with computation,252 properties remain. new max is 1024
SDD size :362 after 594
SDD proceeding with computation,252 properties remain. new max is 2048
SDD size :594 after 1550
At refinement iteration 0 (INCLUDED_ONLY) 0/263 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 252 unsolved
SMT process timed out in 5639ms, After SMT, problems are : Problem set: 0 solved, 252 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 263 out of 326 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 326/326 places, 592/592 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 322 transition count 588
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 322 transition count 588
Applied a total of 8 rules in 209 ms. Remains 322 /326 variables (removed 4) and now considering 588/592 (removed 4) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 209 ms. Remains : 322/326 places, 588/592 transitions.
Reachability property qltransition_588 is true.
Reachability property qltransition_584 is true.
Reachability property qltransition_485 is true.
Reachability property qltransition_484 is true.
Reachability property qltransition_375 is true.
Reachability property qltransition_370 is true.
Reachability property qltransition_369 is true.
Reachability property qltransition_66 is true.
Reachability property qltransition_62 is true.
Reachability property qltransition_31 is true.
Reachability property qltransition_30 is true.
SDD proceeding with computation,241 properties remain. new max is 2048
SDD size :1550 after 33565
SDD proceeding with computation,241 properties remain. new max is 4096
SDD size :33565 after 231588
RANDOM walk for 3975210 steps (911666 resets) in 116420 ms. (34 steps per ms) remains 213/252 properties
BEST_FIRST walk for 40002 steps (1919 resets) in 576 ms. (69 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40004 steps (1850 resets) in 586 ms. (68 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40002 steps (1869 resets) in 471 ms. (84 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40003 steps (1836 resets) in 505 ms. (79 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40003 steps (1902 resets) in 685 ms. (58 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40003 steps (1824 resets) in 477 ms. (83 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40002 steps (1908 resets) in 503 ms. (79 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40003 steps (1819 resets) in 407 ms. (98 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40002 steps (1849 resets) in 480 ms. (83 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40002 steps (1876 resets) in 541 ms. (73 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40004 steps (1847 resets) in 375 ms. (106 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40004 steps (1849 resets) in 395 ms. (101 steps per ms) remains 213/213 properties
BEST_FIRST walk for 40001 steps (1906 resets) in 350 ms. (113 steps per ms) remains 211/213 properties
BEST_FIRST walk for 40001 steps (1925 resets) in 405 ms. (98 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40002 steps (1932 resets) in 369 ms. (108 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40003 steps (1932 resets) in 328 ms. (121 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40002 steps (1931 resets) in 353 ms. (113 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40004 steps (1906 resets) in 339 ms. (117 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40003 steps (1894 resets) in 573 ms. (69 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40001 steps (1932 resets) in 571 ms. (69 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40003 steps (1901 resets) in 483 ms. (82 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40004 steps (1836 resets) in 429 ms. (93 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40003 steps (1866 resets) in 385 ms. (103 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40004 steps (1847 resets) in 420 ms. (95 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40002 steps (1916 resets) in 362 ms. (110 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40002 steps (1821 resets) in 347 ms. (114 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40002 steps (1844 resets) in 412 ms. (96 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40004 steps (1894 resets) in 381 ms. (104 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40004 steps (1941 resets) in 574 ms. (69 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40002 steps (1805 resets) in 502 ms. (79 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40001 steps (1939 resets) in 567 ms. (70 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40003 steps (1886 resets) in 472 ms. (84 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40003 steps (1944 resets) in 514 ms. (77 steps per ms) remains 211/211 properties
BEST_FIRST walk for 40004 steps (1800 resets) in 371 ms. (107 steps per ms) remains 210/211 properties
BEST_FIRST walk for 40002 steps (1911 resets) in 331 ms. (120 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1874 resets) in 382 ms. (104 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1904 resets) in 331 ms. (120 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1924 resets) in 376 ms. (106 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1852 resets) in 332 ms. (120 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40004 steps (1897 resets) in 414 ms. (96 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40002 steps (1883 resets) in 336 ms. (118 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1881 resets) in 460 ms. (86 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1840 resets) in 418 ms. (95 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1821 resets) in 434 ms. (91 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40004 steps (1877 resets) in 344 ms. (115 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1897 resets) in 317 ms. (125 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40004 steps (1814 resets) in 297 ms. (134 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40002 steps (1902 resets) in 366 ms. (108 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40001 steps (1829 resets) in 328 ms. (121 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40001 steps (1862 resets) in 419 ms. (95 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40002 steps (1845 resets) in 336 ms. (118 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1848 resets) in 332 ms. (120 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40002 steps (1952 resets) in 439 ms. (90 steps per ms) remains 210/210 properties
SDD proceeding with computation,241 properties remain. new max is 8192
SDD size :231588 after 1.48617e+06
BEST_FIRST walk for 40004 steps (1864 resets) in 381 ms. (104 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40002 steps (1878 resets) in 481 ms. (82 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1841 resets) in 450 ms. (88 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40004 steps (1817 resets) in 357 ms. (111 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40002 steps (1873 resets) in 403 ms. (99 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1881 resets) in 465 ms. (85 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40004 steps (1802 resets) in 393 ms. (101 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40004 steps (1842 resets) in 387 ms. (103 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1923 resets) in 392 ms. (101 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1945 resets) in 428 ms. (93 steps per ms) remains 210/210 properties
BEST_FIRST walk for 40003 steps (1860 resets) in 377 ms. (105 steps per ms) remains 208/210 properties
BEST_FIRST walk for 40003 steps (1958 resets) in 337 ms. (118 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1904 resets) in 392 ms. (101 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1891 resets) in 334 ms. (119 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1904 resets) in 388 ms. (102 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1817 resets) in 483 ms. (82 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1930 resets) in 365 ms. (109 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1876 resets) in 426 ms. (93 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1892 resets) in 444 ms. (89 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1840 resets) in 470 ms. (84 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1925 resets) in 389 ms. (102 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1858 resets) in 386 ms. (103 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1916 resets) in 335 ms. (119 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1844 resets) in 415 ms. (96 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1884 resets) in 425 ms. (93 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1888 resets) in 411 ms. (97 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1853 resets) in 517 ms. (77 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1876 resets) in 429 ms. (93 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1884 resets) in 465 ms. (85 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1805 resets) in 395 ms. (101 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1918 resets) in 475 ms. (84 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1920 resets) in 475 ms. (84 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1907 resets) in 385 ms. (103 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1864 resets) in 346 ms. (115 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1851 resets) in 400 ms. (99 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1925 resets) in 346 ms. (115 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1889 resets) in 345 ms. (115 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1971 resets) in 355 ms. (112 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1891 resets) in 395 ms. (101 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1881 resets) in 450 ms. (88 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1851 resets) in 486 ms. (82 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1849 resets) in 578 ms. (69 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1943 resets) in 405 ms. (98 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1821 resets) in 488 ms. (81 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1892 resets) in 418 ms. (95 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1800 resets) in 415 ms. (96 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1845 resets) in 319 ms. (125 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1843 resets) in 377 ms. (105 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1867 resets) in 377 ms. (105 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1909 resets) in 360 ms. (110 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1849 resets) in 388 ms. (102 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1818 resets) in 329 ms. (121 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1962 resets) in 365 ms. (109 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1940 resets) in 304 ms. (131 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40004 steps (1892 resets) in 316 ms. (126 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40002 steps (1939 resets) in 343 ms. (116 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40003 steps (1882 resets) in 306 ms. (130 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40000 steps (8000 resets) in 851 ms. (46 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40000 steps (8000 resets) in 771 ms. (51 steps per ms) remains 208/208 properties
BEST_FIRST walk for 40000 steps (8000 resets) in 629 ms. (63 steps per ms) remains 208/208 properties
// Phase 1: matrix 588 rows 322 cols
[2026-05-23 09:48:58] [INFO ] Computed 2 invariants in 10 ms
[2026-05-23 09:48:58] [INFO ] State equation strengthened by 338 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/222 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (OVERLAPS) 32/254 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/254 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 3 (OVERLAPS) 35/289 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 09:49:09] [INFO ] Deduced a trap composed of 118 places in 395 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 09:49:09] [INFO ] Deduced a trap composed of 118 places in 154 ms of which 29 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/289 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/289 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (OVERLAPS) 552/841 variables, 289/293 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/841 variables, 302/595 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/841 variables, 0/595 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Reachability property qltransition_580 is true.
Reachability property qltransition_576 is true.
Reachability property qltransition_503 is true.
Reachability property qltransition_469 is true.
Reachability property qltransition_468 is true.
Reachability property qltransition_368 is true.
Reachability property qltransition_363 is true.
Reachability property qltransition_362 is true.
Reachability property qltransition_118 is true.
At refinement iteration 9 (OVERLAPS) 67/908 variables, 32/627 constraints. Problems are: Problem set: 1 solved, 207 unsolved
SMT process timed out in 45281ms, After SMT, problems are : Problem set: 1 solved, 207 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 221 out of 322 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 322/322 places, 588/588 transitions.
Discarding 12 places :
Symmetric choice reduction at 0 with 12 rule applications. Total rules 12 place count 310 transition count 543
Iterating global reduction 0 with 12 rules applied. Total rules applied 24 place count 310 transition count 543
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 33 place count 301 transition count 534
Iterating global reduction 0 with 9 rules applied. Total rules applied 42 place count 301 transition count 534
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 46 place count 297 transition count 530
Iterating global reduction 0 with 4 rules applied. Total rules applied 50 place count 297 transition count 530
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 52 place count 297 transition count 528
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 53 place count 296 transition count 526
Iterating global reduction 1 with 1 rules applied. Total rules applied 54 place count 296 transition count 526
Applied a total of 54 rules in 77 ms. Remains 296 /322 variables (removed 26) and now considering 526/588 (removed 62) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 77 ms. Remains : 296/322 places, 526/588 transitions.
Reachability property qltransition_64 is true.
Reachability property qltransition_60 is true.
Reachability property qltransition_15 is true.
RANDOM walk for 4000000 steps (916921 resets) in 104411 ms. (38 steps per ms) remains 203/207 properties
BEST_FIRST walk for 40003 steps (1898 resets) in 342 ms. (116 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1911 resets) in 375 ms. (106 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40001 steps (1893 resets) in 377 ms. (105 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1875 resets) in 331 ms. (120 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1918 resets) in 318 ms. (125 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1920 resets) in 333 ms. (119 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1775 resets) in 331 ms. (120 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1872 resets) in 383 ms. (104 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40001 steps (1836 resets) in 325 ms. (122 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40000 steps (1855 resets) in 369 ms. (108 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1918 resets) in 392 ms. (101 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1816 resets) in 368 ms. (108 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1818 resets) in 317 ms. (125 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1890 resets) in 311 ms. (128 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40001 steps (1807 resets) in 276 ms. (144 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1848 resets) in 300 ms. (132 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1854 resets) in 342 ms. (116 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1919 resets) in 377 ms. (105 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1948 resets) in 368 ms. (108 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1791 resets) in 297 ms. (134 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40001 steps (1886 resets) in 394 ms. (101 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1849 resets) in 358 ms. (111 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1874 resets) in 328 ms. (121 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1915 resets) in 362 ms. (110 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1846 resets) in 323 ms. (123 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1848 resets) in 338 ms. (118 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1951 resets) in 303 ms. (131 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1816 resets) in 402 ms. (99 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1864 resets) in 362 ms. (110 steps per ms) remains 203/203 properties
Reachability property qltransition_14 is true.
SDD proceeding with computation,228 properties remain. new max is 8192
BEST_FIRST walk for 40002 steps (1905 resets) in 344 ms. (115 steps per ms) remains 203/203 properties
SDD size :1.48617e+06 after 6.38824e+06
BEST_FIRST walk for 40003 steps (1882 resets) in 391 ms. (102 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1873 resets) in 324 ms. (123 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1840 resets) in 373 ms. (106 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1829 resets) in 311 ms. (128 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40001 steps (1837 resets) in 315 ms. (126 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1894 resets) in 322 ms. (123 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1853 resets) in 391 ms. (102 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1943 resets) in 326 ms. (122 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1932 resets) in 384 ms. (103 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1901 resets) in 329 ms. (121 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1885 resets) in 413 ms. (96 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1917 resets) in 342 ms. (116 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1948 resets) in 395 ms. (101 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1941 resets) in 362 ms. (110 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1958 resets) in 331 ms. (120 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1923 resets) in 335 ms. (119 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1870 resets) in 334 ms. (119 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40003 steps (1903 resets) in 305 ms. (130 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40002 steps (1909 resets) in 323 ms. (123 steps per ms) remains 203/203 properties
BEST_FIRST walk for 40004 steps (1904 resets) in 337 ms. (118 steps per ms) remains 203/203 properties
Finished probabilistic random walk after 334258 steps, run visited all 203 properties in 3710 ms. (steps per millisecond=90 )
Probabilistic random walk after 334258 steps, saw 138278 distinct states, run finished after 3717 ms. (steps per millisecond=89 ) properties seen :203
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Able to resolve query QuasiLiveness after proving 317 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PROBABILISTIC_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 174652 ms.
BK_STOP 1779529821873
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
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="DBSingleClientW-PT-d1m09"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 2-5973"
echo " Executing tool gold2025"
echo " Input is DBSingleClientW-PT-d1m09, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r096-smll-177946996400112"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DBSingleClientW-PT-d1m09.tgz
mv DBSingleClientW-PT-d1m09 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.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 [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;