fond
Model Checking Contest @ Petri Nets 2017
7th edition, Zaragoza, Spain, June 27, 2017
Execution of r069-csrt-149440963800058
Last Updated
June 27, 2017

About the Execution of Tapaal for Railroad-PT-050

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
14132.520 1301688.00 1510142.00 110.40 TFF?F?FFT?FFTFFF normal

Execution Chart

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

Trace from the execution

Waiting for the VM to be ready (probing ssh)
.......
=====================================================================
Generated by BenchKit 2-3254
Executing tool tapaal
Input is Railroad-PT-050, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r069-csrt-149440963800058
=====================================================================


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

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

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME Railroad-PT-050-CTLFireability-0
FORMULA_NAME Railroad-PT-050-CTLFireability-1
FORMULA_NAME Railroad-PT-050-CTLFireability-10
FORMULA_NAME Railroad-PT-050-CTLFireability-11
FORMULA_NAME Railroad-PT-050-CTLFireability-12
FORMULA_NAME Railroad-PT-050-CTLFireability-13
FORMULA_NAME Railroad-PT-050-CTLFireability-14
FORMULA_NAME Railroad-PT-050-CTLFireability-15
FORMULA_NAME Railroad-PT-050-CTLFireability-2
FORMULA_NAME Railroad-PT-050-CTLFireability-3
FORMULA_NAME Railroad-PT-050-CTLFireability-4
FORMULA_NAME Railroad-PT-050-CTLFireability-5
FORMULA_NAME Railroad-PT-050-CTLFireability-6
FORMULA_NAME Railroad-PT-050-CTLFireability-7
FORMULA_NAME Railroad-PT-050-CTLFireability-8
FORMULA_NAME Railroad-PT-050-CTLFireability-9

=== Now, execution of the tool begins

BK_START 1494828730713

---> tapaal --- TAPAAL
Total timeout: 3600

*************************************
* TAPAAL verifying CTLFireability *
*************************************
---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (16 in total)
Each query is verified by 2 parallel strategies for 60 seconds
------------------- QUERY 1 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 1

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 1

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10
Size of net before structural reductions: 518 places, 2756 transitions
Size of net after structural reductions: 266 places, 2657 transitions
Structural reduction finished after 0.151958 seconds

Net reduction is enabled.
Removed transitions: 99
Removed places: 252
Applications of rule A: 0
Applications of rule B: 49
Applications of rule C: 52
Applications of rule D: 0
Applications of rule E: 151

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=ENABLED,QSTimeout=30,Siphon_Trap=DISABLED,LPSolve_Timeout=10

Query before reduction: EF ((pl_P168_25 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_33 >= 1)))
Query after reduction: EF ((pl_P168_25 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_33 >= 1)))
Query size reduced from 12 to 12 nodes (0.00 percent reduction).
Query reduction finished after 0.105665 seconds.
Size of net before structural reductions: 518 places, 2756 transitions
Size of net after structural reductions: 266 places, 2657 transitions
Structural reduction finished after 0.118331 seconds

Net reduction is enabled.
Removed transitions: 99
Removed places: 252
Applications of rule A: 0
Applications of rule B: 49
Applications of rule C: 52
Applications of rule D: 0
Applications of rule E: 151


Query is satisfied.

STATS:
discovered states: 2348303
explored states: 2053646
expanded states: 75853
max tokens: 104

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 7250000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 1

FORMULA Railroad-PT-050-CTLFireability-0 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 2 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 2

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 2

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.001594
Configurations: 295
Markings: 255
Edges: 60
Processed Edges: 80
Processed N. Edges: 30
Explored Configs: 50
Query: AF(((((tokens-count(pl_P168_47) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_31) ge integer-constant(1))) | (tokens-count(pl_P168_28) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_16) ge integer-constant(1)))) | (tokens-count(pl_P168_3) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_11) ge integer-constant(1)))) & (((tokens-count(pl_P168_3) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_21) ge integer-constant(1))) & (tokens-count(pl_P168_16) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_26) ge integer-constant(1)))) | ((tokens-count(pl_P168_33) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_49) ge integer-constant(1))) & (tokens-count(pl_P168_34) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_42) ge integer-constant(1)))))) | ((tokens-count(pl_P168_32) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_35) ge integer-constant(1))) | !(AF!((tokens-count(pl_P168_46) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_24) ge integer-constant(1)))))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 2

FORMULA Railroad-PT-050-CTLFireability-1 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 3 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 3

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 3

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is satisfied.

STATS:
Time (seconds): 0.001378
Configurations: 256
Markings: 255
Edges: 11
Processed Edges: 10
Processed N. Edges: 2
Explored Configs: 11
Query: !(AF(tokens-count(pl_P168_29) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_8) ge integer-constant(1))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 3

FORMULA Railroad-PT-050-CTLFireability-2 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 4 ----------------------
No solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 4

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 4


------------------- QUERY 5 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 5

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 5

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=ENABLED,QSTimeout=30,Siphon_Trap=DISABLED,LPSolve_Timeout=10

Query before reduction: ((not AX (not (((pl_P168_16 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_49 >= 1))) or ((pl_P168_18 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_42 >= 1)))))) or EF (((pl_P168_27 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_29 >= 1))) and (((pl_P168_37 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_47 >= 1))) and (not ((pl_P168_14 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_11 >= 1)))))))
Query after reduction: EX (((pl_P168_16 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_49 >= 1))) or ((pl_P168_18 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_42 >= 1))))
Query size reduced from 61 to 24 nodes (60.66 percent reduction).
Query reduction finished after 0.722908 seconds.


Query is NOT satisfied.

STATS:
Time (seconds): 0.000155
Configurations: 1
Markings: 51
Edges: 0
Processed Edges: 0
Processed N. Edges: 0
Explored Configs: 1
Query: EX((tokens-count(pl_P168_16) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_49) ge integer-constant(1))) | (tokens-count(pl_P168_18) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_42) ge integer-constant(1))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 7250000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 5

FORMULA Railroad-PT-050-CTLFireability-4 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 6 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 6

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 6

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.04713
Configurations: 7045
Markings: 7043
Edges: 593
Processed Edges: 594
Processed N. Edges: 0
Explored Configs: 544
Query: (EXAF((tokens-count(pl_P168_11) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_18) ge integer-constant(1))) | (tokens-count(pl_P168_46) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_1) ge integer-constant(1)))) | (EXEF(tokens-count(pl_P168_40) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_6) ge integer-constant(1))) & (tokens-count(pl_P168_40) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_19) ge integer-constant(1)))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 6

FORMULA Railroad-PT-050-CTLFireability-5 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 7 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 7

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 7

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is satisfied.

STATS:
Time (seconds): 0.001517
Configurations: 266
Markings: 255
Edges: 21
Processed Edges: 30
Processed N. Edges: 2
Explored Configs: 21
Query: !(AFAX((tokens-count(pl_P117_1) ge integer-constant(1) & tokens-count(pl_P24_1) ge integer-constant(1)) & (tokens-count(pl_P168_40) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_36) ge integer-constant(1)))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 7

FORMULA Railroad-PT-050-CTLFireability-6 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 8 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 8

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 8

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10
Size of net before structural reductions: 518 places, 2756 transitions
Size of net after structural reductions: 268 places, 2659 transitions
Structural reduction finished after 0.114219 seconds

Net reduction is enabled.
Removed transitions: 97
Removed places: 250
Applications of rule A: 0
Applications of rule B: 47
Applications of rule C: 52
Applications of rule D: 0
Applications of rule E: 151

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=ENABLED,QSTimeout=30,Siphon_Trap=DISABLED,LPSolve_Timeout=10

Query before reduction: EF (not (((pl_P168_46 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_28 >= 1))) or ((not ((pl_P168_47 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_23 >= 1)))) or (not ((pl_P168_14 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_33 >= 1)))))))
Query after reduction: false
Query size reduced from 36 to 1 nodes (97.22 percent reduction).
Query reduction finished after 0.326101 seconds.


Query is NOT satisfied.

Query solved by Query Simplification.

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 7250000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 8

FORMULA Railroad-PT-050-CTLFireability-7 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 9 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 9

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 9

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.003071
Configurations: 564
Markings: 255
Edges: 24
Processed Edges: 24
Processed N. Edges: 0
Explored Configs: 23
Query: (A(AF(tokens-count(pl_P168_7) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_17) ge integer-constant(1)))) U (!(!((tokens-count(pl_P168_42) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_4) ge integer-constant(1)))))) | (((EX(tokens-count(pl_P168_11) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_23) ge integer-constant(1))) | !(((tokens-count(pl_P168_47) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_19) ge integer-constant(1))) & (tokens-count(pl_P168_35) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_41) ge integer-constant(1)))))) & !((((tokens-count(pl_P168_14) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_13) ge integer-constant(1))) & (tokens-count(pl_P168_19) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_35) ge integer-constant(1)))) | ((tokens-count(pl_P168_37) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_18) ge integer-constant(1))) | (tokens-count(pl_P168_46) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_30) ge integer-constant(1))))))) & A(!((tokens-count(pl_P168_50) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_36) ge integer-constant(1))))) U (((tokens-count(pl_P168_27) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_45) ge integer-constant(1))) & (tokens-count(pl_P168_35) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_12) ge integer-constant(1)))))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 9

FORMULA Railroad-PT-050-CTLFireability-8 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 10 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 10

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 10

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.001467
Configurations: 265
Markings: 255
Edges: 20
Processed Edges: 30
Processed N. Edges: 0
Explored Configs: 20
Query: AFE(((tokens-count(pl_P168_26) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_39) ge integer-constant(1))) | (tokens-count(pl_P168_38) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_30) ge integer-constant(1))))) U (((tokens-count(pl_P168_25) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_35) ge integer-constant(1))) & (tokens-count(pl_P168_43) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_11) ge integer-constant(1)))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 10

FORMULA Railroad-PT-050-CTLFireability-9 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 11 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 11

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 11

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.04665
Configurations: 7143
Markings: 7043
Edges: 691
Processed Edges: 641
Processed N. Edges: 249
Explored Configs: 642
Query: EX!(!(AF(tokens-count(pl_P168_29) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_15) ge integer-constant(1)))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 11

FORMULA Railroad-PT-050-CTLFireability-10 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 12 ----------------------
No solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 12

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 12


------------------- QUERY 13 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 13

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 13

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.001398
Configurations: 256
Markings: 255
Edges: 11
Processed Edges: 11
Processed N. Edges: 0
Explored Configs: 11
Query: (AF!((!((tokens-count(pl_P6_1) ge integer-constant(1) & tokens-count(pl_P1_1) ge integer-constant(1))) | ((tokens-count(pl_P168_21) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_47) ge integer-constant(1))) & (tokens-count(pl_P168_24) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_5) ge integer-constant(1)))))) & (!((tokens-count(pl_P168_27) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_17) ge integer-constant(1)))) | !(!((((tokens-count(pl_P168_2) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_4) ge integer-constant(1))) | (tokens-count(pl_P168_49) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_18) ge integer-constant(1)))) | ((tokens-count(pl_P168_20) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_19) ge integer-constant(1))) & (tokens-count(pl_P168_37) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_3) ge integer-constant(1)))))))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 13

FORMULA Railroad-PT-050-CTLFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 14 ----------------------
No solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 14

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 14


------------------- QUERY 15 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 15

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 15

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=ENABLED,QSTimeout=30,Siphon_Trap=DISABLED,LPSolve_Timeout=10

Query before reduction: ((AF (((pl_P168_8 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_34 >= 1))) and (((pl_P168_32 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_34 >= 1))) or ((pl_P168_43 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_16 >= 1))))) or AG EX ((pl_P168_27 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_34 >= 1)))) and (not A ((not ((pl_P168_36 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_40 >= 1)))) U ((pl_P168_12 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_49 >= 1))))))
Query after reduction: (AG EX ((pl_P168_27 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_34 >= 1))) and (not A (((pl_P168_36 < 1) or ((pl_P30_1 < 1) or (pl_P16_40 < 1))) U ((pl_P168_12 >= 1) and ((pl_P30_1 >= 1) and (pl_P16_49 >= 1))))))
Query size reduced from 74 to 37 nodes (50.00 percent reduction).
Query reduction finished after 0.666802 seconds.


Query is NOT satisfied.

STATS:
Time (seconds): 0.001327
Configurations: 311
Markings: 255
Edges: 65
Processed Edges: 15
Processed N. Edges: 6
Explored Configs: 16
Query: (!(EF!(EX(tokens-count(pl_P168_27) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_34) ge integer-constant(1))))) & !(A((tokens-count(pl_P168_36) ls integer-constant(1) | (tokens-count(pl_P30_1) ls integer-constant(1) | tokens-count(pl_P16_40) ls integer-constant(1)))) U ((tokens-count(pl_P168_12) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_49) ge integer-constant(1))))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 7250000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 15

FORMULA Railroad-PT-050-CTLFireability-14 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
------------------- QUERY 16 ----------------------
Solution found
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Parameters: -s DFS -d 10 ./model.pnml ./CTLFireability.xml -x 16

Parameters: -s DFS -q 0 -d 10 ./model.pnml ./CTLFireability.xml -x 16

Search=DFS,Trace=DISABLED,State_Space_Exploration=DISABLED,Structural_Reduction=AGGRESSIVE,Struct_Red_Timout=10,Stubborn_Reduction=ENABLED,Query_Simplication=DISABLED,Siphon_Trap=DISABLED,LPSolve_Timeout=10


Query is NOT satisfied.

STATS:
Time (seconds): 0.001542
Configurations: 285
Markings: 255
Edges: 40
Processed Edges: 30
Processed N. Edges: 60
Explored Configs: 40
Query: A(!(!(EF!((tokens-count(pl_P168_8) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_20) ge integer-constant(1))))))) U ((tokens-count(pl_P168_42) ge integer-constant(1) & (tokens-count(pl_P30_1) ge integer-constant(1) & tokens-count(pl_P16_4) ge integer-constant(1))))

parallel: This job succeeded:
/home/mcc/BenchKit/start.sh 14500000 /home/mcc/BenchKit/bin/verifypn-linux64 -s\ DFS\ -q\ 0\ -d\ 10 ./model.pnml ./CTLFireability.xml -x 16

FORMULA Railroad-PT-050-CTLFireability-15 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT STRUCTURAL_REDUCTION STATE_COMPRESSION STUBBORN_SETS
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 480 seconds)
------------------- QUERY 4 ----------------------
Running query 4 for 1130 seconds. Remaining: 3 queries and 3385 seconds

Parameters: -s DFS -d 100 -q 100 ./model.pnml ./CTLFireability.xml -x 4
No solution found
------------------- QUERY 12 ----------------------
Running query 12 for 1562 seconds. Remaining: 2 queries and 3120 seconds

Parameters: -s DFS -d 100 -q 100 ./model.pnml ./CTLFireability.xml -x 12
No solution found
------------------- QUERY 14 ----------------------
Running query 14 for 2848 seconds. Remaining: 1 queries and 2846 seconds

Parameters: -s DFS -d 100 -q 100 ./model.pnml ./CTLFireability.xml -x 14
No solution found
---------------------------------------------------
Step 3: Multiquery processing
---------------------------------------------------
Remaining 3 queries are solved using multiquery
Time remaining: 2572 seconds of the initial 3600 seconds
Running multiquery on -x 4,12,14 for 2572 seconds

Parameters: -s DFS -d 100 -q 100 -p ./model.pnml ./CTLFireability.xml -x 4,12,14
End of script.

BK_STOP 1494830032401

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

Command terminated by signal 11
Command being timed: "timeout 1130 /home/mcc/BenchKit/bin/verifypn-linux64 -s DFS -d 100 -q 100 ./model.pnml ./CTLFireability.xml -x 4"
User time (seconds): 257.45
System time (seconds): 7.63
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 4:25.20
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 14308784
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 3707615
Voluntary context switches: 3
Involuntary context switches: 742
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
Command terminated by signal 11
Command being timed: "timeout 1562 /home/mcc/BenchKit/bin/verifypn-linux64 -s DFS -d 100 -q 100 ./model.pnml ./CTLFireability.xml -x 12"
User time (seconds): 268.16
System time (seconds): 6.30
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 4:34.60
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 14320388
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 3710515
Voluntary context switches: 3
Involuntary context switches: 778
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
Command terminated by signal 11
Command being timed: "timeout 2848 /home/mcc/BenchKit/bin/verifypn-linux64 -s DFS -d 100 -q 100 ./model.pnml ./CTLFireability.xml -x 14"
User time (seconds): 269.10
System time (seconds): 6.78
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 4:36.02
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 14302664
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 3706086
Voluntary context switches: 3
Involuntary context switches: 654
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
Command terminated by signal 11
Command being timed: "timeout 2572 /home/mcc/BenchKit/bin/verifypn-linux64 -s DFS -d 100 -q 100 -p ./model.pnml ./CTLFireability.xml -x 4,12,14"
User time (seconds): 265.09
System time (seconds): 6.40
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 4:31.50
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 14308752
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 3707605
Voluntary context switches: 3
Involuntary context switches: 478
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0

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="Railroad-PT-050"
export BK_EXAMINATION="CTLFireability"
export BK_TOOL="tapaal"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

tar xzf /home/mcc/BenchKit/INPUTS/Railroad-PT-050.tgz
mv Railroad-PT-050 execution

# this is for BenchKit: explicit launching of the test

cd execution
echo "====================================================================="
echo " Generated by BenchKit 2-3254"
echo " Executing tool tapaal"
echo " Input is Railroad-PT-050, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r069-csrt-149440963800058"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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 '' CTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
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 ;