Trace number 1626793

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
SAT07 reference solver: March KS 2007-02-08UNSAT 18.2712 18.2797

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/380/
unif-k3-r4.25-v380-c1615-S2043187304-036.cnf
MD5SUM8f761d7a83f8ed9f2fb1562cef6a194f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark15.8076
Satisfiable
(Un)Satisfiability was proved
Number of variables380
Number of clauses1615
Sum of the clauses size4845
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31615
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.01/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.01/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.01/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.01/0.01	c main()::
0.01/0.01	c initFormula():: searching for DIMACS p-line....
0.01/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 380 variables and 1615 clauses.
0.01/0.01	c parseCNF():: parsing....
0.01/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.01/0.01	c runParser():: parsing was successful, warming up engines...
0.01/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.01	c preprocessing fase I completed:: there are now 380 free variables and 1615 clauses.
0.01/0.01	c stat :: sign balance is biased by 0.438
0.01/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.01/0.01	c using 3-SAT heuristics (occurence based diff)
0.01/0.01	c longest clause has size 3
0.01/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 185 duplicate clauses
0.01/0.01	c resolvent_look() :: found 99 resolvents
0.01/0.01	c lessRedundantTransformation():: nothing to be done.
0.01/0.01	c transformTo3SAT():: you gave me 380 variables and 1714 clauses.
0.01/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.01/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.01/0.01	c transformTo3SAT():: the transformation yielded 380 variabels and 1714 clauses.
0.01/0.01	c main():: clause / variable ratio: ( 1714 / 380 ) = 4.51
0.01/0.01	c longest clause has size 3
0.01/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.01	c dynamic_preselect_setsize :: off
0.01/0.01	c suggested doublelook initial :: 0
0.01/0.01	c main():: all systems go!
0.01/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 151 JD: 11
0.01/0.06	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************
c |********************************
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c |****************************************************************| 1 NC: 2320 JD: 11
0.90/0.92	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 7077 JD: 11
2.79/2.83	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 16815 JD: 11
6.69/6.72	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 4 NC: 27909 JD: 11
11.19/11.20	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 5 NC: 36561 JD: 11
14.69/14.78	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 6 NC: 41880 JD: 11
16.98/17.01	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 7 NC: 44035 JD: 11
17.89/17.95	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 8 NC: 44676 JD: 11
18.18/18.24	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
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c |********
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c |************************
c |********************************
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c |****************************************
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c |********************************************
c |************************************************
c |****************************************************************| 9 NC: 44735 JD: 11
18.18/18.27	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |*****
c |******
c |********
c |****************
c |********************************
c |****************************************************************| 10 NC: 44737 JD: 11
18.18/18.27	c |----------------------------------------------------------------|
c |
18.18/18.27	c
18.18/18.27	c main():: nodeCount: 44737
18.18/18.27	c main():: dead ends in main: 885
18.18/18.27	c main():: lookAheadCount: 3050932
18.18/18.27	c main():: unitResolveCount: 464528
18.18/18.27	c main():: time=18.260000
18.18/18.27	c main():: necessary_assignments: 8375
18.18/18.27	c main():: bin_sat: 0, bin_unsat 0
18.18/18.27	c main():: doublelook: #: 186553, succes #: 139359
18.18/18.27	c main():: doublelook: overall 6.335 of all possible doublelooks executed
18.18/18.27	c main():: doublelook: succesrate: 74.702, average DL_trigger: 5872.288
18.18/18.27	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1626793-1240136700/watcher-1626793-1240136700 -o /tmp/evaluation-result-1626793-1240136700/solver-1626793-1240136700 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/march_ks HOME/instance-1626793-1240136700.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.90 0.95 0.98 3/64 28519
/proc/meminfo: memFree=1222128/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=792 CPUtime=0
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 123 0 0 0 0 0 0 0 18 0 1 0 41698061 811008 106 1992294400 134512640 135019032 4294956240 18446744073709551615 134520576 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 198 116 63 123 0 73 0

[startup+0.0113581 s]
/proc/loadavg: 0.90 0.95 0.98 3/64 28519
/proc/meminfo: memFree=1222128/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1056 CPUtime=0.01
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 190 0 0 0 1 0 0 0 18 0 1 0 41698061 1081344 173 1992294400 134512640 135019032 4294956240 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 264 174 68 123 0 139 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1056

[startup+0.101375 s]
/proc/loadavg: 0.90 0.95 0.98 3/64 28519
/proc/meminfo: memFree=1222128/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1188 CPUtime=0.1
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 238 0 0 0 10 0 0 0 18 0 1 0 41698061 1216512 221 1992294400 134512640 135019032 4294956240 18446744073709551615 134628916 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 297 221 73 123 0 172 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1188

[startup+0.301411 s]
/proc/loadavg: 0.90 0.95 0.98 3/64 28519
/proc/meminfo: memFree=1222128/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1188 CPUtime=0.3
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 246 0 0 0 30 0 0 0 19 0 1 0 41698061 1216512 229 1992294400 134512640 135019032 4294956240 18446744073709551615 134526454 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 297 229 73 123 0 172 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1188

[startup+0.701484 s]
/proc/loadavg: 0.90 0.95 0.98 3/64 28519
/proc/meminfo: memFree=1222128/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1188 CPUtime=0.7
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 252 0 0 0 70 0 0 0 23 0 1 0 41698061 1216512 235 1992294400 134512640 135019032 4294956240 18446744073709551615 134542988 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 297 235 73 123 0 172 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 1188

[startup+1.50163 s]
/proc/loadavg: 0.90 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1221416/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1320 CPUtime=1.5
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 257 0 0 0 150 0 0 0 20 0 1 0 41698061 1351680 240 1992294400 134512640 135019032 4294956240 18446744073709551615 134548889 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 330 240 73 123 0 205 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 1320

[startup+3.10192 s]
/proc/loadavg: 0.90 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1221288/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1320 CPUtime=3.09
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 265 0 0 0 309 0 0 0 25 0 1 0 41698061 1351680 248 1992294400 134512640 135019032 4294956240 18446744073709551615 134542481 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 330 248 73 123 0 205 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1320

[startup+6.30151 s]
/proc/loadavg: 0.91 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1221096/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1320 CPUtime=6.29
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 274 0 0 0 629 0 0 0 25 0 1 0 41698061 1351680 257 1992294400 134512640 135019032 4294956240 18446744073709551615 134542352 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 330 257 73 123 0 205 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1320

[startup+12.7027 s]
/proc/loadavg: 0.92 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1220984/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1460 CPUtime=12.69
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 290 0 0 0 1269 0 0 0 25 0 1 0 41698061 1495040 273 1992294400 134512640 135019032 4294956240 18446744073709551615 134549476 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 365 273 73 123 0 240 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1460

Solver just ended. Dumping a history of the last processes samples

[startup+15.9013 s]
/proc/loadavg: 0.92 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1220984/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1460 CPUtime=15.89
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 309 0 0 0 1589 0 0 0 25 0 1 0 41698061 1495040 292 1992294400 134512640 135019032 4294956240 18446744073709551615 134542782 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 365 292 73 123 0 240 0
Current children cumulated CPU time (s) 15.89
Current children cumulated vsize (KiB) 1460

[startup+17.5016 s]
/proc/loadavg: 0.92 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1220984/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1460 CPUtime=17.49
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 313 0 0 0 1749 0 0 0 25 0 1 0 41698061 1495040 296 1992294400 134512640 135019032 4294956240 18446744073709551615 134549514 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 365 296 73 123 0 240 0
Current children cumulated CPU time (s) 17.49
Current children cumulated vsize (KiB) 1460

[startup+17.9026 s]
/proc/loadavg: 0.92 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1220984/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1460 CPUtime=17.89
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 314 0 0 0 1789 0 0 0 25 0 1 0 41698061 1495040 297 1992294400 134512640 135019032 4294956240 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 365 297 73 123 0 240 0
Current children cumulated CPU time (s) 17.89
Current children cumulated vsize (KiB) 1460

[startup+18.1017 s]
/proc/loadavg: 0.92 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1220984/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1460 CPUtime=18.08
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 314 0 0 0 1808 0 0 0 25 0 1 0 41698061 1495040 297 1992294400 134512640 135019032 4294956240 18446744073709551615 134564374 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 365 297 73 123 0 240 0
Current children cumulated CPU time (s) 18.08
Current children cumulated vsize (KiB) 1460

[startup+18.2017 s]
/proc/loadavg: 0.92 0.95 0.98 2/65 28520
/proc/meminfo: memFree=1220984/2055920 swapFree=4192956/4192956
[pid=28519] ppid=28517 vsize=1460 CPUtime=18.18
/proc/28519/stat : 28519 (march_ks) R 28517 28519 28452 0 -1 4194304 314 0 0 0 1818 0 0 0 25 0 1 0 41698061 1495040 297 1992294400 134512640 135019032 4294956240 18446744073709551615 134525884 0 0 4096 0 0 0 0 17 0 0 0
/proc/28519/statm: 365 297 73 123 0 240 0
Current children cumulated CPU time (s) 18.18
Current children cumulated vsize (KiB) 1460

Child status: 20
Real time (s): 18.2797
CPU time (s): 18.2712
CPU user time (s): 18.2662
CPU system time (s): 0.004999
CPU usage (%): 99.9537
Max. virtual memory (cumulated for all children) (KiB): 1460

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 18.2662
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 338
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 3
involuntary context switches= 58

runsolver used 0.020996 second user time and 0.056991 second system time

The end

Launcher Data 

Begin job on node44 at 2009-04-19 12:25:00
IDJOB=1626793
IDBENCH=70631
IDSOLVER=582
FILE ID=node44/1626793-1240136700
PBS_JOBID= 9157872
Free space on /tmp= 66372 MiB

SOLVER NAME= SAT07 reference solver: March KS 2007-02-08
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/380/unif-k3-r4.25-v380-c1615-S2043187304-036.cnf
COMMAND LINE= HOME/march_ks BENCHNAME            
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1626793-1240136700/watcher-1626793-1240136700 -o /tmp/evaluation-result-1626793-1240136700/solver-1626793-1240136700 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/march_ks HOME/instance-1626793-1240136700.cnf            

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 8f761d7a83f8ed9f2fb1562cef6a194f
RANDOM SEED=1514537693

node44.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.267
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5931.00
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.267
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1222680 kB
Buffers:         83320 kB
Cached:         670188 kB
SwapCached:          0 kB
Active:         265700 kB
Inactive:       501664 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1222680 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            2976 kB
Writeback:           0 kB
Mapped:          23596 kB
Slab:            51872 kB
Committed_AS:   200220 kB
PageTables:       1380 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66368 MiB
End job on node44 at 2009-04-19 12:25:19