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.r231-tall-167856415900357.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)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is LamportFastMutEx-COL-4, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r231-tall-167856415900357
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 528K
-rw-r--r-- 1 mcc users 8.8K Feb 25 13:41 CTLCardinality.txt
-rw-r--r-- 1 mcc users 89K Feb 25 13:41 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.0K Feb 25 13:39 CTLFireability.txt
-rw-r--r-- 1 mcc users 36K Feb 25 13:39 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.9K Feb 25 16:20 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 16:20 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Feb 25 16:20 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 16:20 LTLFireability.xml
-rw-r--r-- 1 mcc users 17K Feb 25 13:44 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 174K Feb 25 13:44 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.0K Feb 25 13:43 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 49K Feb 25 13:43 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 16:20 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 16:20 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 2 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 40K 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 positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-00
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-01
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-02
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-03
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-04
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-05
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-06
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-07
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-08
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-09
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-10
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-11
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-12
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-13
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-14
FORMULA_NAME LamportFastMutEx-COL-4-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1679445466939

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=lolaxred
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=LamportFastMutEx-COL-4
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-22 00:37:48] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -timeout, 360, -rebuildPNML]
[2023-03-22 00:37:48] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-22 00:37:48] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-03-22 00:37:48] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-22 00:37:49] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 609 ms
[2023-03-22 00:37:49] [INFO ] Imported 18 HL places and 17 HL transitions for a total of 135 PT places and 285.0 transition bindings in 16 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 5 ms.
[2023-03-22 00:37:49] [INFO ] Built PT skeleton of HLPN with 18 places and 17 transitions 68 arcs in 4 ms.
[2023-03-22 00:37:49] [INFO ] Skeletonized 16 HLPN properties in 0 ms.
Reduce places removed 3 places and 0 transitions.
// Phase 1: matrix 17 rows 15 cols
[2023-03-22 00:37:49] [INFO ] Computed 2 place invariants in 4 ms
FORMULA LamportFastMutEx-COL-4-UpperBounds-15 4 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA LamportFastMutEx-COL-4-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA LamportFastMutEx-COL-4-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA LamportFastMutEx-COL-4-UpperBounds-02 4 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
[2023-03-22 00:37:49] [INFO ] Invariant cache hit.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2023-03-22 00:37:49] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 2 ms.
[2023-03-22 00:37:49] [INFO ] Added : 5 causal constraints over 1 iterations in 18 ms. Result :sat
Minimization took 5 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 2 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 2 ms.
[2023-03-22 00:37:49] [INFO ] Added : 11 causal constraints over 3 iterations in 18 ms. Result :sat
Minimization took 7 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-22 00:37:49] [INFO ] Added : 6 causal constraints over 2 iterations in 15 ms. Result :sat
Minimization took 8 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Added 1 Read/Feed constraints in 11 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 2 ms.
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-22 00:37:49] [INFO ] Added : 5 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 3 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 3 ms.
[2023-03-22 00:37:49] [INFO ] Added : 11 causal constraints over 3 iterations in 10 ms. Result :sat
Minimization took 7 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 2 ms.
[2023-03-22 00:37:49] [INFO ] Added : 5 causal constraints over 1 iterations in 18 ms. Result :sat
Minimization took 4 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 4 ms.
[2023-03-22 00:37:49] [INFO ] Added : 11 causal constraints over 3 iterations in 14 ms. Result :sat
Minimization took 5 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-22 00:37:49] [INFO ] Added : 5 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:49] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2023-03-22 00:37:49] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-03-22 00:37:49] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2023-03-22 00:37:50] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 2 ms.
[2023-03-22 00:37:50] [INFO ] Added : 7 causal constraints over 2 iterations in 7 ms. Result :sat
Minimization took 4 ms.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2023-03-22 00:37:50] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:50] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-22 00:37:50] [INFO ] Added : 5 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 3 ms.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-03-22 00:37:50] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:50] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-22 00:37:50] [INFO ] Added : 11 causal constraints over 3 iterations in 7 ms. Result :sat
Minimization took 4 ms.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2023-03-22 00:37:50] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2023-03-22 00:37:50] [INFO ] Computed and/alt/rep : 16/20/16 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-22 00:37:50] [INFO ] Added : 6 causal constraints over 2 iterations in 12 ms. Result :sat
Minimization took 3 ms.
Current structural bounds on expressions (after SMT) : [4, 16, 4, 4, 16, 4, 4, 4, 4, 4, 4, 4]
Domain [pid(5), pid(5)] of place P_wait breaks symmetries in sort pid
Symmetric sort wr.t. initial and guards and successors and join/free detected :P_bool
Arc [3:1*[$i, 1]] contains constants of sort P_bool
Transition T_setbi_2 : constants on arcs in [[3:1*[$i, 1]]] introduces in P_bool(2) partition with 1 elements that refines current partition to 2 subsets.
[2023-03-22 00:37:50] [INFO ] Unfolded HLPN to a Petri net with 135 places and 230 transitions 990 arcs in 16 ms.
[2023-03-22 00:37:50] [INFO ] Unfolded 12 HLPN properties in 0 ms.
Deduced a syphon composed of 33 places in 2 ms
Reduce places removed 33 places and 50 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 44 ms. (steps per millisecond=227 ) properties (out of 12) seen :53
FORMULA LamportFastMutEx-COL-4-UpperBounds-10 4 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-00 4 TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=666 ) properties (out of 10) seen :34
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=909 ) properties (out of 10) seen :31
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=666 ) properties (out of 10) seen :33
FORMULA LamportFastMutEx-COL-4-UpperBounds-05 4 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=909 ) properties (out of 9) seen :38
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=1000 ) properties (out of 9) seen :36
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=1111 ) properties (out of 9) seen :32
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=1111 ) properties (out of 9) seen :19
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties (out of 9) seen :39
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties (out of 9) seen :30
[2023-03-22 00:37:50] [INFO ] Flow matrix only has 144 transitions (discarded 36 similar events)
// Phase 1: matrix 144 rows 102 cols
[2023-03-22 00:37:50] [INFO ] Computed 26 place invariants in 10 ms
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using 26 positive place invariants in 10 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2023-03-22 00:37:50] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:50] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:50] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2023-03-22 00:37:50] [INFO ] State equation strengthened by 40 read => feed constraints.
[2023-03-22 00:37:50] [INFO ] [Nat]Added 40 Read/Feed constraints in 12 ms returned sat
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 12 places in 56 ms of which 6 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 19 places in 50 ms of which 1 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 20 places in 50 ms of which 0 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 13 places in 40 ms of which 2 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 9 places in 40 ms of which 1 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 9 places in 40 ms of which 0 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 13 places in 38 ms of which 0 ms to minimize.
[2023-03-22 00:37:50] [INFO ] Deduced a trap composed of 9 places in 38 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 13 places in 28 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 13 places in 32 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 6 places in 39 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 11 trap constraints in 530 ms
[2023-03-22 00:37:51] [INFO ] [Real]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:51] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:51] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2023-03-22 00:37:51] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:51] [INFO ] [Nat]Absence check using 26 positive place invariants in 10 ms returned sat
[2023-03-22 00:37:51] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:51] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2023-03-22 00:37:51] [INFO ] [Nat]Added 40 Read/Feed constraints in 6 ms returned sat
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 14 places in 36 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 12 places in 38 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 6 places in 42 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 12 places in 38 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 15 places in 42 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 13 places in 37 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 9 places in 38 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 13 places in 36 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 9 places in 33 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 8 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 10 trap constraints in 454 ms
[2023-03-22 00:37:51] [INFO ] [Real]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:51] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:51] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2023-03-22 00:37:51] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:51] [INFO ] [Nat]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:51] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:51] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2023-03-22 00:37:51] [INFO ] [Nat]Added 40 Read/Feed constraints in 14 ms returned sat
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 9 places in 52 ms of which 1 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 16 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:51] [INFO ] Deduced a trap composed of 9 places in 31 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 34 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 28 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 6 places in 28 ms of which 1 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 31 ms of which 1 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 8 trap constraints in 325 ms
[2023-03-22 00:37:52] [INFO ] [Real]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:52] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:52] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2023-03-22 00:37:52] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:52] [INFO ] [Nat]Absence check using 26 positive place invariants in 10 ms returned sat
[2023-03-22 00:37:52] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:52] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2023-03-22 00:37:52] [INFO ] [Nat]Added 40 Read/Feed constraints in 6 ms returned sat
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 18 places in 42 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 17 places in 36 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 95 ms
[2023-03-22 00:37:52] [INFO ] Computed and/alt/rep : 128/512/128 causal constraints (skipped 12 transitions) in 11 ms.
[2023-03-22 00:37:52] [INFO ] Added : 54 causal constraints over 11 iterations in 123 ms. Result :sat
Minimization took 54 ms.
[2023-03-22 00:37:52] [INFO ] [Real]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:52] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:52] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2023-03-22 00:37:52] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:52] [INFO ] [Nat]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:52] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:52] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2023-03-22 00:37:52] [INFO ] [Nat]Added 40 Read/Feed constraints in 8 ms returned sat
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 9 places in 44 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 14 places in 38 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 10 places in 37 ms of which 2 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 27 ms of which 4 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 25 ms of which 1 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 16 places in 28 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 31 ms of which 0 ms to minimize.
[2023-03-22 00:37:52] [INFO ] Deduced a trap composed of 13 places in 25 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 6 places in 26 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 9 trap constraints in 327 ms
[2023-03-22 00:37:53] [INFO ] [Real]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:53] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2023-03-22 00:37:53] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:53] [INFO ] [Nat]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:53] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Nat]Added 40 Read/Feed constraints in 7 ms returned sat
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 9 places in 44 ms of which 1 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 11 places in 34 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 9 places in 34 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 22 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 25 places in 28 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 6 places in 33 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 6 places in 29 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 9 places in 28 ms of which 1 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 11 places in 25 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 11 places in 27 ms of which 0 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Deduced a trap composed of 11 places in 26 ms of which 1 ms to minimize.
[2023-03-22 00:37:53] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 11 trap constraints in 414 ms
[2023-03-22 00:37:53] [INFO ] [Real]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:53] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2023-03-22 00:37:53] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:53] [INFO ] [Nat]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:53] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Nat]Added 40 Read/Feed constraints in 5 ms returned sat
[2023-03-22 00:37:53] [INFO ] Computed and/alt/rep : 128/512/128 causal constraints (skipped 12 transitions) in 9 ms.
[2023-03-22 00:37:53] [INFO ] Added : 18 causal constraints over 5 iterations in 66 ms. Result :sat
Minimization took 22 ms.
[2023-03-22 00:37:53] [INFO ] [Real]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:53] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2023-03-22 00:37:53] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:53] [INFO ] [Nat]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:53] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2023-03-22 00:37:53] [INFO ] [Nat]Added 40 Read/Feed constraints in 6 ms returned sat
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 17 places in 43 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 11 places in 36 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 11 places in 34 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 16 places in 31 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 13 places in 32 ms of which 1 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 13 places in 27 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 6 places in 30 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 6 places in 30 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 9 places in 30 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 13 places in 30 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 9 places in 31 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 13 places in 31 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 12 trap constraints in 465 ms
[2023-03-22 00:37:54] [INFO ] [Real]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:54] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:54] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2023-03-22 00:37:54] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:54] [INFO ] [Nat]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:54] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:54] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2023-03-22 00:37:54] [INFO ] [Nat]Added 40 Read/Feed constraints in 6 ms returned sat
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 11 places in 36 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 21 places in 43 ms of which 1 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 23 places in 43 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 21 places in 41 ms of which 1 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 9 places in 48 ms of which 1 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 10 places in 36 ms of which 3 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 11 places in 38 ms of which 0 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 8 places in 39 ms of which 1 ms to minimize.
[2023-03-22 00:37:54] [INFO ] Deduced a trap composed of 21 places in 38 ms of which 1 ms to minimize.
[2023-03-22 00:37:55] [INFO ] Deduced a trap composed of 24 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:55] [INFO ] Deduced a trap composed of 9 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:55] [INFO ] Deduced a trap composed of 12 places in 30 ms of which 1 ms to minimize.
[2023-03-22 00:37:55] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 12 trap constraints in 558 ms
Current structural bounds on expressions (after SMT) : [12, 3, 12, 4, 3, 3, 4, 3, 3] Max seen :[12, 3, 12, 1, 3, 3, 3, 3, 3]
FORMULA LamportFastMutEx-COL-4-UpperBounds-14 3 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-13 3 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-11 3 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-09 3 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-06 12 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-04 3 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LamportFastMutEx-COL-4-UpperBounds-01 12 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Support contains 8 out of 102 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 102/102 places, 180/180 transitions.
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: 4
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 0 with 8 rules applied. Total rules applied 8 place count 98 transition count 176
Free-agglomeration rule (complex) applied 4 times.
Iterating global reduction 0 with 4 rules applied. Total rules applied 12 place count 98 transition count 172
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 16 place count 94 transition count 172
Applied a total of 16 rules in 26 ms. Remains 94 /102 variables (removed 8) and now considering 172/180 (removed 8) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27 ms. Remains : 94/102 places, 172/180 transitions.
Normalized transition count is 136 out of 172 initially.
// Phase 1: matrix 136 rows 94 cols
[2023-03-22 00:37:55] [INFO ] Computed 26 place invariants in 7 ms
Incomplete random walk after 1000000 steps, including 2 resets, run finished after 1445 ms. (steps per millisecond=692 ) properties (out of 2) seen :5
FORMULA LamportFastMutEx-COL-4-UpperBounds-12 4 TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 505 ms. (steps per millisecond=1980 ) properties (out of 1) seen :1
[2023-03-22 00:37:57] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
// Phase 1: matrix 136 rows 94 cols
[2023-03-22 00:37:57] [INFO ] Computed 26 place invariants in 5 ms
[2023-03-22 00:37:57] [INFO ] [Real]Absence check using 26 positive place invariants in 5 ms returned sat
[2023-03-22 00:37:57] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:57] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2023-03-22 00:37:57] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:57] [INFO ] [Nat]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:57] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:57] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2023-03-22 00:37:57] [INFO ] State equation strengthened by 40 read => feed constraints.
[2023-03-22 00:37:57] [INFO ] [Nat]Added 40 Read/Feed constraints in 4 ms returned sat
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 7 places in 46 ms of which 0 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 55 ms
[2023-03-22 00:37:57] [INFO ] Computed and/alt/rep : 116/496/116 causal constraints (skipped 16 transitions) in 10 ms.
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 25 places in 37 ms of which 0 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 6 places in 42 ms of which 1 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 19 places in 41 ms of which 0 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 30 places in 44 ms of which 0 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 26 places in 42 ms of which 1 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Deduced a trap composed of 21 places in 46 ms of which 0 ms to minimize.
[2023-03-22 00:37:57] [INFO ] Trap strengthening (SAT) tested/added 7/6 trap constraints in 328 ms
[2023-03-22 00:37:57] [INFO ] Added : 49 causal constraints over 11 iterations in 447 ms. Result :sat
Minimization took 67 ms.
Current structural bounds on expressions (after SMT) : [4] Max seen :[1]
Support contains 4 out of 94 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 94/94 places, 172/172 transitions.
Applied a total of 0 rules in 6 ms. Remains 94 /94 variables (removed 0) and now considering 172/172 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 94/94 places, 172/172 transitions.
Normalized transition count is 136 out of 172 initially.
// Phase 1: matrix 136 rows 94 cols
[2023-03-22 00:37:57] [INFO ] Computed 26 place invariants in 2 ms
Incomplete random walk after 1000000 steps, including 2 resets, run finished after 1270 ms. (steps per millisecond=787 ) properties (out of 1) seen :1
Incomplete Best-First random walk after 1000000 steps, including 2 resets, run finished after 507 ms. (steps per millisecond=1972 ) properties (out of 1) seen :1
[2023-03-22 00:37:59] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
// Phase 1: matrix 136 rows 94 cols
[2023-03-22 00:37:59] [INFO ] Computed 26 place invariants in 3 ms
[2023-03-22 00:37:59] [INFO ] [Real]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:59] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:59] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2023-03-22 00:37:59] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:37:59] [INFO ] [Nat]Absence check using 26 positive place invariants in 4 ms returned sat
[2023-03-22 00:37:59] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:37:59] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2023-03-22 00:37:59] [INFO ] State equation strengthened by 40 read => feed constraints.
[2023-03-22 00:37:59] [INFO ] [Nat]Added 40 Read/Feed constraints in 4 ms returned sat
[2023-03-22 00:37:59] [INFO ] Deduced a trap composed of 7 places in 45 ms of which 0 ms to minimize.
[2023-03-22 00:37:59] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 55 ms
[2023-03-22 00:37:59] [INFO ] Computed and/alt/rep : 116/496/116 causal constraints (skipped 16 transitions) in 9 ms.
[2023-03-22 00:38:00] [INFO ] Deduced a trap composed of 25 places in 48 ms of which 1 ms to minimize.
[2023-03-22 00:38:00] [INFO ] Deduced a trap composed of 6 places in 49 ms of which 1 ms to minimize.
[2023-03-22 00:38:00] [INFO ] Deduced a trap composed of 19 places in 39 ms of which 0 ms to minimize.
[2023-03-22 00:38:00] [INFO ] Deduced a trap composed of 30 places in 41 ms of which 0 ms to minimize.
[2023-03-22 00:38:00] [INFO ] Deduced a trap composed of 26 places in 43 ms of which 1 ms to minimize.
[2023-03-22 00:38:00] [INFO ] Deduced a trap composed of 21 places in 43 ms of which 0 ms to minimize.
[2023-03-22 00:38:00] [INFO ] Trap strengthening (SAT) tested/added 7/6 trap constraints in 329 ms
[2023-03-22 00:38:00] [INFO ] Added : 49 causal constraints over 11 iterations in 456 ms. Result :sat
Minimization took 66 ms.
Current structural bounds on expressions (after SMT) : [4] Max seen :[1]
Support contains 4 out of 94 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 94/94 places, 172/172 transitions.
Applied a total of 0 rules in 6 ms. Remains 94 /94 variables (removed 0) and now considering 172/172 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 94/94 places, 172/172 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 94/94 places, 172/172 transitions.
Applied a total of 0 rules in 6 ms. Remains 94 /94 variables (removed 0) and now considering 172/172 (removed 0) transitions.
[2023-03-22 00:38:00] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:00] [INFO ] Invariant cache hit.
[2023-03-22 00:38:00] [INFO ] Implicit Places using invariants in 79 ms returned [62, 63, 64, 65]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 80 ms to find 4 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 90/94 places, 172/172 transitions.
Applied a total of 0 rules in 6 ms. Remains 90 /90 variables (removed 0) and now considering 172/172 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 92 ms. Remains : 90/94 places, 172/172 transitions.
Normalized transition count is 136 out of 172 initially.
// Phase 1: matrix 136 rows 90 cols
[2023-03-22 00:38:00] [INFO ] Computed 22 place invariants in 1 ms
Incomplete random walk after 1000000 steps, including 2 resets, run finished after 1262 ms. (steps per millisecond=792 ) properties (out of 1) seen :1
Incomplete Best-First random walk after 1000000 steps, including 2 resets, run finished after 510 ms. (steps per millisecond=1960 ) properties (out of 1) seen :1
[2023-03-22 00:38:02] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
// Phase 1: matrix 136 rows 90 cols
[2023-03-22 00:38:02] [INFO ] Computed 22 place invariants in 1 ms
[2023-03-22 00:38:02] [INFO ] [Real]Absence check using 22 positive place invariants in 3 ms returned sat
[2023-03-22 00:38:02] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:38:02] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2023-03-22 00:38:02] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:38:02] [INFO ] [Nat]Absence check using 22 positive place invariants in 4 ms returned sat
[2023-03-22 00:38:02] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:38:02] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2023-03-22 00:38:02] [INFO ] State equation strengthened by 24 read => feed constraints.
[2023-03-22 00:38:02] [INFO ] [Nat]Added 24 Read/Feed constraints in 3 ms returned sat
[2023-03-22 00:38:02] [INFO ] Computed and/alt/rep : 120/496/120 causal constraints (skipped 12 transitions) in 9 ms.
[2023-03-22 00:38:02] [INFO ] Deduced a trap composed of 9 places in 30 ms of which 1 ms to minimize.
[2023-03-22 00:38:02] [INFO ] Deduced a trap composed of 9 places in 28 ms of which 0 ms to minimize.
[2023-03-22 00:38:02] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 89 ms
[2023-03-22 00:38:02] [INFO ] Added : 51 causal constraints over 11 iterations in 204 ms. Result :sat
Minimization took 57 ms.
Current structural bounds on expressions (after SMT) : [4] Max seen :[1]
Support contains 4 out of 90 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 90/90 places, 172/172 transitions.
Applied a total of 0 rules in 5 ms. Remains 90 /90 variables (removed 0) and now considering 172/172 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 90/90 places, 172/172 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 90/90 places, 172/172 transitions.
Applied a total of 0 rules in 5 ms. Remains 90 /90 variables (removed 0) and now considering 172/172 (removed 0) transitions.
[2023-03-22 00:38:02] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:02] [INFO ] Invariant cache hit.
[2023-03-22 00:38:02] [INFO ] Implicit Places using invariants in 70 ms returned []
[2023-03-22 00:38:02] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:02] [INFO ] Invariant cache hit.
[2023-03-22 00:38:02] [INFO ] State equation strengthened by 24 read => feed constraints.
[2023-03-22 00:38:02] [INFO ] Implicit Places using invariants and state equation in 104 ms returned []
Implicit Place search using SMT with State Equation took 176 ms to find 0 implicit places.
[2023-03-22 00:38:02] [INFO ] Redundant transitions in 5 ms returned []
[2023-03-22 00:38:02] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:02] [INFO ] Invariant cache hit.
[2023-03-22 00:38:03] [INFO ] Dead Transitions using invariants and state equation in 79 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 270 ms. Remains : 90/90 places, 172/172 transitions.
Starting property specific reduction for LamportFastMutEx-COL-4-UpperBounds-07
Normalized transition count is 136 out of 172 initially.
// Phase 1: matrix 136 rows 90 cols
[2023-03-22 00:38:03] [INFO ] Computed 22 place invariants in 1 ms
Incomplete random walk after 10000 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=714 ) properties (out of 1) seen :1
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 1) seen :1
[2023-03-22 00:38:03] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
// Phase 1: matrix 136 rows 90 cols
[2023-03-22 00:38:03] [INFO ] Computed 22 place invariants in 2 ms
[2023-03-22 00:38:03] [INFO ] [Real]Absence check using 22 positive place invariants in 4 ms returned sat
[2023-03-22 00:38:03] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:38:03] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2023-03-22 00:38:03] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:38:03] [INFO ] [Nat]Absence check using 22 positive place invariants in 3 ms returned sat
[2023-03-22 00:38:03] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:38:03] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2023-03-22 00:38:03] [INFO ] State equation strengthened by 24 read => feed constraints.
[2023-03-22 00:38:03] [INFO ] [Nat]Added 24 Read/Feed constraints in 7 ms returned sat
[2023-03-22 00:38:03] [INFO ] Computed and/alt/rep : 120/496/120 causal constraints (skipped 12 transitions) in 9 ms.
[2023-03-22 00:38:03] [INFO ] Deduced a trap composed of 9 places in 33 ms of which 0 ms to minimize.
[2023-03-22 00:38:03] [INFO ] Deduced a trap composed of 9 places in 22 ms of which 0 ms to minimize.
[2023-03-22 00:38:03] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 85 ms
[2023-03-22 00:38:03] [INFO ] Added : 51 causal constraints over 11 iterations in 201 ms. Result :sat
Minimization took 60 ms.
Current structural bounds on expressions (after SMT) : [4] Max seen :[1]
Support contains 4 out of 90 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 90/90 places, 172/172 transitions.
Applied a total of 0 rules in 5 ms. Remains 90 /90 variables (removed 0) and now considering 172/172 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 90/90 places, 172/172 transitions.
Normalized transition count is 136 out of 172 initially.
// Phase 1: matrix 136 rows 90 cols
[2023-03-22 00:38:03] [INFO ] Computed 22 place invariants in 2 ms
Incomplete random walk after 1000000 steps, including 2 resets, run finished after 1246 ms. (steps per millisecond=802 ) properties (out of 1) seen :1
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 496 ms. (steps per millisecond=2016 ) properties (out of 1) seen :1
[2023-03-22 00:38:05] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
// Phase 1: matrix 136 rows 90 cols
[2023-03-22 00:38:05] [INFO ] Computed 22 place invariants in 5 ms
[2023-03-22 00:38:05] [INFO ] [Real]Absence check using 22 positive place invariants in 3 ms returned sat
[2023-03-22 00:38:05] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-22 00:38:05] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2023-03-22 00:38:05] [INFO ] Solution in real domain found non-integer solution.
[2023-03-22 00:38:05] [INFO ] [Nat]Absence check using 22 positive place invariants in 4 ms returned sat
[2023-03-22 00:38:05] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-22 00:38:05] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2023-03-22 00:38:05] [INFO ] State equation strengthened by 24 read => feed constraints.
[2023-03-22 00:38:05] [INFO ] [Nat]Added 24 Read/Feed constraints in 3 ms returned sat
[2023-03-22 00:38:05] [INFO ] Computed and/alt/rep : 120/496/120 causal constraints (skipped 12 transitions) in 9 ms.
[2023-03-22 00:38:05] [INFO ] Deduced a trap composed of 9 places in 29 ms of which 0 ms to minimize.
[2023-03-22 00:38:05] [INFO ] Deduced a trap composed of 9 places in 23 ms of which 0 ms to minimize.
[2023-03-22 00:38:05] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 80 ms
[2023-03-22 00:38:05] [INFO ] Added : 51 causal constraints over 11 iterations in 197 ms. Result :sat
Minimization took 59 ms.
Current structural bounds on expressions (after SMT) : [4] Max seen :[1]
Support contains 4 out of 90 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 90/90 places, 172/172 transitions.
Applied a total of 0 rules in 5 ms. Remains 90 /90 variables (removed 0) and now considering 172/172 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 90/90 places, 172/172 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 90/90 places, 172/172 transitions.
Applied a total of 0 rules in 5 ms. Remains 90 /90 variables (removed 0) and now considering 172/172 (removed 0) transitions.
[2023-03-22 00:38:05] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:05] [INFO ] Invariant cache hit.
[2023-03-22 00:38:05] [INFO ] Implicit Places using invariants in 63 ms returned []
[2023-03-22 00:38:05] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:05] [INFO ] Invariant cache hit.
[2023-03-22 00:38:05] [INFO ] State equation strengthened by 24 read => feed constraints.
[2023-03-22 00:38:05] [INFO ] Implicit Places using invariants and state equation in 110 ms returned []
Implicit Place search using SMT with State Equation took 175 ms to find 0 implicit places.
[2023-03-22 00:38:05] [INFO ] Redundant transitions in 8 ms returned []
[2023-03-22 00:38:05] [INFO ] Flow matrix only has 136 transitions (discarded 36 similar events)
[2023-03-22 00:38:05] [INFO ] Invariant cache hit.
[2023-03-22 00:38:05] [INFO ] Dead Transitions using invariants and state equation in 71 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 267 ms. Remains : 90/90 places, 172/172 transitions.
Ending property specific reduction for LamportFastMutEx-COL-4-UpperBounds-07 in 2920 ms.
[2023-03-22 00:38:06] [INFO ] Flatten gal took : 43 ms
[2023-03-22 00:38:06] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/UpperBounds.sr.xml took 2 ms.
[2023-03-22 00:38:06] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 90 places, 172 transitions and 772 arcs took 2 ms.
Total runtime 17775 ms.
There are residual formulas that ITS could not solve within timeout
starting LoLA
BK_INPUT LamportFastMutEx-COL-4
BK_EXAMINATION: UpperBounds
bin directory: /home/mcc/BenchKit/bin//../reducer/bin//../../lola/bin/
current directory: /home/mcc/execution/374
Upper Bounds

FORMULA LamportFastMutEx-COL-4-UpperBounds-07 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

BK_STOP 1679445490782

--------------------
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//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -timeout 360 -rebuildPNML
lola: MEM LIMIT 32
lola: MEM LIMIT 5
lola: NET
lola: input: PNML file (--pnmlnet)
lola: reading net from /home/mcc/execution/374/model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file /home/mcc/execution/374/model.pnml
lola: Reading formula.
lola: Using XML format (--xmlformula)
lola: reading XML formula
lola: reading formula from /home/mcc/execution/374/UpperBounds.xml
lola: Rule S: 0 transitions removed,0 places removed
lola: LAUNCH task # 5 (type EXCL) for 0 LamportFastMutEx-COL-4-UpperBounds-07
lola: time limit : 3600 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 3 (type FNDP) for 0 LamportFastMutEx-COL-4-UpperBounds-07
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 4 (type EQUN) for 0 LamportFastMutEx-COL-4-UpperBounds-07
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 4
sara: try reading problem file /home/mcc/execution/374/UpperBounds-4.sara.
sara: place or transition ordering is non-deterministic
lola: REPORT NUM
lola: FINISHED task # 5 (type EXCL) for LamportFastMutEx-COL-4-UpperBounds-07
lola: markings : 619866
lola: fired transitions : 1874428
lola: time used : 3.000000
lola: memory pages used : 3
lola: CANCELED task # 3 (type FNDP) for LamportFastMutEx-COL-4-UpperBounds-07 (obsolete)
lola: CANCELED task # 4 (type EQUN) for LamportFastMutEx-COL-4-UpperBounds-07 (obsolete)
lola: Portfolio finished: no open formulas

FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
LamportFastMutEx-COL-4-UpperBounds-07: BOUND 1 state space


Time elapsed: 3 secs. Pages in use: 3

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="LamportFastMutEx-COL-4"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="lolaxred"
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 lolaxred"
echo " Input is LamportFastMutEx-COL-4, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r231-tall-167856415900357"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/LamportFastMutEx-COL-4.tgz
mv LamportFastMutEx-COL-4 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;