Trace number 316427

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, and are wall clock time (not CPU 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
March KS 2007-02-08UNSAT 6.34604 6.35587

General information on the benchmark

Namecrafted/spence/
medium/s65-100.cnf
MD5SUMc783ce32e47f2d2dd661851cca52c3a7
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark3.61445
Satisfiable
(Un)Satisfiability was proved
Number of variables65
Number of clauses140
Sum of the clauses size420
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3140
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.00	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.00	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.00	c main()::
0.00/0.00	c initFormula():: searching for DIMACS p-line....
0.00/0.00	c initFormula():: the DIMACS p-line indicates a CNF of 65 variables and 140 clauses.
0.00/0.00	c parseCNF():: parsing....
0.00/0.00	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.00	c runParser():: parsing was successful, warming up engines...
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 65 free variables and 140 clauses.
0.00/0.00	c stat :: sign balance is biased by 0.061
0.00/0.00	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.00	c using 3-SAT heuristics (occurence based diff)
0.00/0.00	c longest clause has size 3
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 480 duplicate clauses
0.00/0.00	c lessRedundantTransformation():: nothing to be done.
0.00/0.00	c transformTo3SAT():: you gave me 65 variables and 140 clauses.
0.00/0.00	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.00	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.00	c transformTo3SAT():: the transformation yielded 65 variabels and 140 clauses.
0.00/0.00	c main():: clause / variable ratio: ( 140 / 65 ) = 2.15
0.00/0.00	c longest clause has size 3
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c dynamic_preselect_setsize :: on
0.00/0.00	c suggested doublelook initial :: 0
0.00/0.00	c main():: all systems go!
0.00/0.00	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 164 JD: 11
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************************************************************| 1 NC: 1190 JD: 11
0.00/0.08	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 5750 JD: 11
0.29/0.36	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 16799 JD: 11
0.99/1.03	c |----------------------------------------------------------------|
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c |****************************************************************| 4 NC: 36450 JD: 11
2.20/2.22	c |----------------------------------------------------------------|
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c |****************************************************************| 5 NC: 61452 JD: 11
3.69/3.73	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 6 NC: 82870 JD: 11
4.99/5.03	c |----------------------------------------------------------------|
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c |****************************************************************| 7 NC: 96706 JD: 11
5.79/5.87	c |----------------------------------------------------------------|
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c |****************************************************************| 8 NC: 102553 JD: 11
6.19/6.22	c |----------------------------------------------------------------|
c |*
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c |****
c |*****
c |******
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c |****************
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c |****************************************************************| 9 NC: 104251 JD: 11
6.29/6.33	c |----------------------------------------------------------------|
c |*
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c |******
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c |****************************************************************| 10 NC: 104545 JD: 11
6.29/6.35	c |----------------------------------------------------------------|
c |*
c |**
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c |********
c |****************
c |********************************
c |****************************************************************| 11 NC: 104566 JD: 11
6.29/6.35	c |----------------------------------------------------------------|
c |
6.29/6.35	c
6.29/6.35	c main():: nodeCount: 104566
6.29/6.35	c main():: dead ends in main: 2736
6.29/6.35	c main():: lookAheadCount: 4515755
6.29/6.35	c main():: unitResolveCount: 422642
6.29/6.35	c main():: time=6.340000
6.29/6.35	c main():: necessary_assignments: 8164
6.29/6.35	c main():: bin_sat: 0, bin_unsat 0
6.29/6.35	c main():: doublelook: #: 158979, succes #: 108720
6.29/6.35	c main():: doublelook: overall 3.683 of all possible doublelooks executed
6.29/6.35	c main():: doublelook: succesrate: 68.386, average DL_trigger: 550.267
6.29/6.35	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node6/watcher-316427-1172668958 -o ROOT/results/node6/solver-316427-1172668958 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/316427-1172668958/march_ks /tmp/evaluation/316427-1172668958/instance-316427-1172668958.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2400 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: 0.86 0.94 0.95 3/77 28976
/proc/meminfo: memFree=1664632/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=660 CPUtime=0
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 120 0 0 0 0 0 0 0 18 0 1 0 286850515 675840 102 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134542776 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 165 102 73 123 0 40 0

[startup+0.103166 s]
/proc/loadavg: 0.86 0.94 0.95 3/77 28976
/proc/meminfo: memFree=1664632/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=660 CPUtime=0.1
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 128 0 0 0 10 0 0 0 19 0 1 0 286850515 675840 110 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 165 110 73 123 0 40 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 660

[startup+0.201186 s]
/proc/loadavg: 0.86 0.94 0.95 3/77 28976
/proc/meminfo: memFree=1664632/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=660 CPUtime=0.19
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 131 0 0 0 19 0 0 0 19 0 1 0 286850515 675840 113 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134547719 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 165 113 73 123 0 40 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 660

[startup+0.301205 s]
/proc/loadavg: 0.86 0.94 0.95 3/77 28976
/proc/meminfo: memFree=1664632/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=660 CPUtime=0.29
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 131 0 0 0 29 0 0 0 19 0 1 0 286850515 675840 113 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134565468 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 165 113 73 123 0 40 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 660

[startup+0.701284 s]
/proc/loadavg: 0.86 0.94 0.95 3/77 28976
/proc/meminfo: memFree=1664632/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=792 CPUtime=0.69
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 134 0 0 0 69 0 0 0 23 0 1 0 286850515 811008 116 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538565 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 198 116 73 123 0 73 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 792

[startup+1.50244 s]
/proc/loadavg: 0.86 0.94 0.95 2/78 28977
/proc/meminfo: memFree=1664368/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=792 CPUtime=1.49
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 141 0 0 0 149 0 0 0 25 0 1 0 286850515 811008 123 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538248 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 198 123 73 123 0 73 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 792

[startup+3.10176 s]
/proc/loadavg: 0.86 0.94 0.95 2/78 28977
/proc/meminfo: memFree=1664240/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=792 CPUtime=3.09
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 148 0 0 0 309 0 0 0 25 0 1 0 286850515 811008 130 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134598128 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 198 130 73 123 0 73 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 792

[startup+6.30139 s]
/proc/loadavg: 0.87 0.94 0.95 2/78 28977
/proc/meminfo: memFree=1664048/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=944 CPUtime=6.29
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 174 0 0 0 629 0 0 0 25 0 1 0 286850515 966656 156 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134589843 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 236 156 73 123 0 111 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 944

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

[startup+6.30139 s]
/proc/loadavg: 0.87 0.94 0.95 2/78 28977
/proc/meminfo: memFree=1664048/2055924 swapFree=4191880/4192956
[pid=28976] ppid=28972 vsize=944 CPUtime=6.29
/proc/28976/stat : 28976 (march_ks) R 28972 28976 28543 0 -1 4194304 174 0 0 0 629 0 0 0 25 0 1 0 286850515 966656 156 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134589843 0 0 4096 0 0 0 0 17 0 0 0
/proc/28976/statm: 236 156 73 123 0 111 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 944

Child status: 20
Real time (s): 6.35587
CPU time (s): 6.34604
CPU user time (s): 6.34104
CPU system time (s): 0.004999
CPU usage (%): 99.8452
Max. virtual memory (cumulated for all children) (KiB): 944

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 6.34104
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= 175
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= 8
involuntary context switches= 321

runsolver used 0.008998 second user time and 0.028995 second system time

The end

Launcher Data (download as text)

Begin job on node6 on Wed Feb 28 13:22:38 UTC 2007

IDJOB= 316427
IDBENCH= 20441
IDSOLVER= 111
FILE ID= node6/316427-1172668958

PBS_JOBID= 3980978

Free space on /tmp= 66427 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/spence/medium/s65-100.cnf
COMMAND LINE= /tmp/evaluation/316427-1172668958/march_ks /tmp/evaluation/316427-1172668958/instance-316427-1172668958.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node6/watcher-316427-1172668958 -o ROOT/results/node6/solver-316427-1172668958 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/316427-1172668958/march_ks /tmp/evaluation/316427-1172668958/instance-316427-1172668958.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  c783ce32e47f2d2dd661851cca52c3a7

RANDOM SEED= 711231707

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node6.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.277
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		: 3000.277
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:      2055924 kB
MemFree:       1664976 kB
Buffers:         24092 kB
Cached:         260536 kB
SwapCached:        292 kB
Active:         102820 kB
Inactive:       237364 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1664976 kB
SwapTotal:     4192956 kB
SwapFree:      4191880 kB
Dirty:            2400 kB
Writeback:           0 kB
Mapped:          65668 kB
Slab:            36328 kB
Committed_AS:  1000560 kB
PageTables:       1744 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= 66427 MiB

End job on node6 on Wed Feb 28 13:22:44 UTC 2007