Trace number 1626807

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 20.1649 20.1751

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S404185236-001.cnf
MD5SUM0374a56a4be774bc099f027bd9c7fc30
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark17.4343
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1530
Sum of the clauses size4590
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31530
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 360 variables and 1530 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 4 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 359 free variables and 1526 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.487
0.00/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 164 duplicate clauses
0.00/0.01	c resolvent_look() :: found 90 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1616 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 360 variabels and 1616 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1616 / 360 ) = 4.49
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c suggested doublelook initial :: 0
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 141 JD: 12
0.00/0.06	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************************************************************| 1 NC: 1767 JD: 12
0.59/0.66	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 6370 JD: 12
2.39/2.41	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 15253 JD: 12
5.79/5.85	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 4 NC: 26987 JD: 12
10.39/10.47	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 5 NC: 38817 JD: 12
15.18/15.20	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 6 NC: 46064 JD: 12
18.08/18.19	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 7 NC: 49564 JD: 12
19.58/19.65	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 8 NC: 50483 JD: 12
19.98/20.06	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
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c |*************
c |**************
c |***************
c |****************
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c |************************
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c |********************************************************
c |****************************************************************| 9 NC: 50677 JD: 12
20.08/20.15	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |********
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c |****************
c |********************************
c |****************************************************************| 10 NC: 50718 JD: 12
20.08/20.17	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 11 NC: 50720 JD: 12
20.08/20.17	c |----------------------------------------------------------------|
c |
20.08/20.17	c
20.08/20.17	c main():: nodeCount: 50720
20.08/20.17	c main():: dead ends in main: 1754
20.08/20.17	c main():: lookAheadCount: 3220456
20.08/20.17	c main():: unitResolveCount: 649257
20.08/20.17	c main():: time=20.160000
20.08/20.17	c main():: necessary_assignments: 12567
20.08/20.17	c main():: bin_sat: 0, bin_unsat 0
20.08/20.17	c main():: doublelook: #: 203508, succes #: 151873
20.08/20.17	c main():: doublelook: overall 6.582 of all possible doublelooks executed
20.08/20.17	c main():: doublelook: succesrate: 74.628, average DL_trigger: 5851.034
20.08/20.17	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-1626807-1240138280/watcher-1626807-1240138280 -o /tmp/evaluation-result-1626807-1240138280/solver-1626807-1240138280 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/march_ks HOME/instance-1626807-1240138280.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: 1.00 1.00 1.00 3/64 26463
/proc/meminfo: memFree=445312/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=792 CPUtime=0
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 119 0 0 0 0 0 0 0 18 0 1 0 41861962 811008 102 1992294400 134512640 135019032 4294956240 18446744073709551615 134554589 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 198 102 52 123 0 73 0

[startup+0.0637209 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 26463
/proc/meminfo: memFree=445312/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1092 CPUtime=0.06
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 227 0 0 0 6 0 0 0 18 0 1 0 41861962 1118208 210 1992294400 134512640 135019032 4294956240 18446744073709551615 134538162 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 273 210 73 123 0 148 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1092

[startup+0.101727 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 26463
/proc/meminfo: memFree=445312/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1224 CPUtime=0.1
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 233 0 0 0 10 0 0 0 18 0 1 0 41861962 1253376 216 1992294400 134512640 135019032 4294956240 18446744073709551615 134526533 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 306 216 73 123 0 181 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1224

[startup+0.301763 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 26463
/proc/meminfo: memFree=445312/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1224 CPUtime=0.3
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 241 0 0 0 30 0 0 0 20 0 1 0 41861962 1253376 224 1992294400 134512640 135019032 4294956240 18446744073709551615 134526463 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 306 224 73 123 0 181 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1224

[startup+0.701832 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 26463
/proc/meminfo: memFree=445312/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1224 CPUtime=0.69
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 249 0 0 0 69 0 0 0 24 0 1 0 41861962 1253376 232 1992294400 134512640 135019032 4294956240 18446744073709551615 134526436 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 306 232 73 123 0 181 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1224

[startup+1.50197 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444600/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1224 CPUtime=1.49
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 256 0 0 0 149 0 0 0 25 0 1 0 41861962 1253376 239 1992294400 134512640 135019032 4294956240 18446744073709551615 134526439 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 306 239 73 123 0 181 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1224

[startup+3.10125 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444472/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1224 CPUtime=3.09
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 262 0 0 0 309 0 0 0 25 0 1 0 41861962 1253376 245 1992294400 134512640 135019032 4294956240 18446744073709551615 134564838 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 306 245 73 123 0 181 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1224

[startup+6.30181 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444352/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1356 CPUtime=6.29
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 278 0 0 0 629 0 0 0 25 0 1 0 41861962 1388544 261 1992294400 134512640 135019032 4294956240 18446744073709551615 134542767 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 339 261 73 123 0 214 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1356

[startup+12.7019 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444096/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1356 CPUtime=12.69
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 291 0 0 0 1269 0 0 0 25 0 1 0 41861962 1388544 274 1992294400 134512640 135019032 4294956240 18446744073709551615 134563582 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 339 274 73 123 0 214 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1356

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

[startup+15.9015 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444096/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1492 CPUtime=15.88
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 321 0 0 0 1588 0 0 0 25 0 1 0 41861962 1527808 304 1992294400 134512640 135019032 4294956240 18446744073709551615 134538181 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 373 304 73 123 0 248 0
Current children cumulated CPU time (s) 15.88
Current children cumulated vsize (KiB) 1492

[startup+17.5018 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444096/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1492 CPUtime=17.49
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 324 0 0 0 1749 0 0 0 25 0 1 0 41861962 1527808 307 1992294400 134512640 135019032 4294956240 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 373 307 73 123 0 248 0
Current children cumulated CPU time (s) 17.49
Current children cumulated vsize (KiB) 1492

[startup+19.1011 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444096/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1560 CPUtime=19.08
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 330 0 0 0 1908 0 0 0 25 0 1 0 41861962 1597440 313 1992294400 134512640 135019032 4294956240 18446744073709551615 134584635 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 390 313 73 123 0 265 0
Current children cumulated CPU time (s) 19.08
Current children cumulated vsize (KiB) 1560

[startup+19.9012 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444032/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1560 CPUtime=19.88
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 333 0 0 0 1988 0 0 0 25 0 1 0 41861962 1597440 316 1992294400 134512640 135019032 4294956240 18446744073709551615 134684125 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 390 316 73 123 0 265 0
Current children cumulated CPU time (s) 19.88
Current children cumulated vsize (KiB) 1560

[startup+20.1012 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 26464
/proc/meminfo: memFree=444032/2055920 swapFree=4192956/4192956
[pid=26463] ppid=26461 vsize=1560 CPUtime=20.08
/proc/26463/stat : 26463 (march_ks) R 26461 26463 26295 0 -1 4194304 334 0 0 0 2008 0 0 0 25 0 1 0 41861962 1597440 317 1992294400 134512640 135019032 4294956240 18446744073709551615 134564774 0 0 4096 0 0 0 0 17 0 0 0
/proc/26463/statm: 390 317 73 123 0 265 0
Current children cumulated CPU time (s) 20.08
Current children cumulated vsize (KiB) 1560

Child status: 20
Real time (s): 20.1751
CPU time (s): 20.1649
CPU user time (s): 20.1599
CPU system time (s): 0.004999
CPU usage (%): 99.9498
Max. virtual memory (cumulated for all children) (KiB): 1560

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 20.1599
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= 336
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= 2
involuntary context switches= 57

runsolver used 0.029995 second user time and 0.06499 second system time

The end

Launcher Data 

Begin job on node4 at 2009-04-19 12:51:20
IDJOB=1626807
IDBENCH=70638
IDSOLVER=582
FILE ID=node4/1626807-1240138280
PBS_JOBID= 9159246
Free space on /tmp= 66236 MiB

SOLVER NAME= SAT07 reference solver: March KS 2007-02-08
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S404185236-001.cnf
COMMAND LINE= HOME/march_ks BENCHNAME            
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1626807-1240138280/watcher-1626807-1240138280 -o /tmp/evaluation-result-1626807-1240138280/solver-1626807-1240138280 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/march_ks HOME/instance-1626807-1240138280.cnf            

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

MD5SUM BENCH= 0374a56a4be774bc099f027bd9c7fc30
RANDOM SEED=443799261

node4.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		: 3000.265
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	: 5914.62
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		: 3000.265
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:        445856 kB
Buffers:         88936 kB
Cached:        1440112 kB
SwapCached:          0 kB
Active:         411724 kB
Inactive:      1130752 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        445856 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            3064 kB
Writeback:           0 kB
Mapped:          23184 kB
Slab:            53632 kB
Committed_AS:   175364 kB
PageTables:       1468 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= 66232 MiB
End job on node4 at 2009-04-19 12:51:40