Trace number 1725401

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
precosat 236UNSAT 0.334948 0.33579

General information on the benchmark

Namecrafted/Medium/contest05/pebbling/
unsat-pbl-00090.sat05-1326.reshuffled-07.cnf
MD5SUMfc73c241ff6e8e1a49a6ff2500eb7905
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.131979
Satisfiable
(Un)Satisfiability was proved
Number of variables322
Number of clauses9322
Sum of the clauses size72335
Maximum clause length11
Minimum clause length1
Number of clauses of size 11
Number of clauses of size 211
Number of clauses of size 379
Number of clauses of size 4136
Number of clauses of size 5421
Number of clauses of size over 58674

Solver Data 

0.00/0.00	c PicoSATLight Version 236 3e7a3f8825c0b9e241f38a63fee5517540b2feca
0.00/0.00	c Copyright (C) 2009, Armin Biere, JKU, Linz, Austria.  All rights reserved.
0.00/0.00	c Released on Sun Mar 22 10:16:26 CET 2009
0.00/0.00	c Compiled on Tue Mar 24 21:24:39 CET 2009
0.00/0.00	c g++ (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)
0.00/0.00	c -O3 -m32 -static -Wall -Wextra -DNDEBUG -DNLOGPRECO -DNSTATSPRECO
0.00/0.00	c -finline-limit=10000000 -fomit-frame-pointer -fno-exceptions
0.00/0.00	c Linux baghera 2.6.27.19-170.2.35.fc10.i686.PAE i686
0.00/0.00	c
0.00/0.00	c reading HOME/instance-1725401-1240704472.cnf
0.00/0.00	c found header 'p cnf 322 9322'
0.00/0.01	c finished parsing
0.00/0.01	c
0.00/0.01	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.01	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.01	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.01	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.01	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.01	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.01	c
0.00/0.01	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.01	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.01	c
0.00/0.01	c starting search after 0.0 seconds
0.00/0.01	c no decision limit
0.00/0.01	c
0.00/0.01	c       original/binary      fixed     eliminated      learned       agility
0.00/0.01	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.01	c
0.00/0.01	c *    0.0     9321     321      1     0      0       0      0    0.0   0    1
0.03/0.06	c -    0.1     8131     319      2     0      1       0   1000    0.0   0    1
0.03/0.06	c -    0.1     7564     312      2     0      8       0   1000    0.0   0    1
0.03/0.06	c -    0.1     7430     309      2     0     11       0   1000    0.0   0    1
0.03/0.07	c -    0.1     7383     304      2     0     16       0   1000    0.0   0    1
0.03/0.07	c -    0.1     7134     288      2     0     32       0   1000    0.0   0    1
0.09/0.12	c -    0.1     6979     248      3     0     71       0   1000    0.0   0    1
0.09/0.12	c -    0.1     6894     247      3     0     72       0   1000    0.0   0    1
0.09/0.18	c s    0.2     6835     234      3     0     85       0      0    0.0   0    1
0.09/0.18	c l    0.2     6835     234      3     0     85       0   6829    0.0   0    1
0.09/0.18	c R    0.2     6836     234      3     0     85     100     99   85.1   2    1
0.09/0.18	c R    0.2     6836     234      3     0     85     201    200  101.5   4    1
0.09/0.19	c R    0.2     6836     234      3     0     85     804    803   88.4  13    1
0.09/0.19	c B    0.2     6842     233      4     0     85    1002    997   89.1  15    1
0.19/0.21	c B    0.2     6861     232      5     0     85    2002   1989   79.3  19    1
0.19/0.25	c R    0.2     6883     229      8     0     85    4420   4395   75.6  20    1
0.19/0.29	c +    0.3     6886     229      8     0     85    6829   7511   71.4  22    1
0.29/0.31	c B    0.3     6898     228      9     0     85    8009   7531   68.3  22    2
0.29/0.32	c +    0.3     6962     222     15     0     85    8535   8262   66.9  22    2
0.29/0.33	c
0.29/0.33	c       original/binary      fixed     eliminated      learned       agility
0.29/0.33	c   seconds        variables     equivalent    conflicts       height       MB
0.29/0.33	c
0.29/0.33	c 0    0.3     7131     200     37     0     85    9067   8038   65.3  22    2
0.29/0.33	c
0.29/0.33	s UNSATISFIABLE
0.29/0.33	c
0.29/0.33	c 9067 conflicts, 34552 decisions, 2 random
0.29/0.33	c 13 iterations, 48 restarts, 0 skipped
0.29/0.33	c 2 enlarged, 34 shrunken, 88 rescored, 6 rebiased
0.29/0.33	c 1 simplifications, 0 reductions
0.29/0.33	c
0.29/0.33	c vars: 37 fixed, 0 equiv, 85 elim, 1 merged
0.29/0.33	c elim: 68110 resolutions, 1 phases, 1 rounds
0.29/0.33	c sbst: 0% substituted, 0.0% nots, 0.0% ands, 0.0% xors, 0.0% ites
0.29/0.33	c arty: 0.00 and 0.00 xor average arity
0.29/0.33	c prbe: 1282 probed, 1 phases, 2 rounds
0.29/0.33	c prbe: 1 failed, 0 lifted, 0 merged
0.29/0.33	c sccs: 0 non trivial, 0 fixed, 0 merged
0.29/0.33	c hash: 4 units, 1 merged
0.29/0.33	c mins: 92963 learned, 6% deleted, 13 strong, 5 depth
0.29/0.33	c subs: 18 forward, 2349 backward, 184 doms
0.29/0.33	c strs: 4447 forward, 30 backward
0.29/0.33	c doms: 186 dominators, 159 high, 27 low
0.29/0.33	c prps: 94072 propagations, 0.28 megaprops
0.29/0.33	c
0.29/0.33	c 0.3 seconds, 2 MB max, 1 MB recycled

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-1725401-1240704472/watcher-1725401-1240704472 -o /tmp/evaluation-result-1725401-1240704472/solver-1725401-1240704472 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1725401-1240704472.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): 1800 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: 0.91 0.95 0.98 3/64 21807
/proc/meminfo: memFree=1890776/2055920 swapFree=4180832/4192956
[pid=21807] ppid=21805 vsize=920 CPUtime=0
/proc/21807/stat : 21807 (precosat) R 21805 21807 21348 0 -1 4194304 149 0 0 0 0 0 0 0 18 0 1 0 98475423 942080 134 1992294400 134512640 135151029 4294956240 18446744073709551615 134703758 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21807/statm: 230 135 64 155 0 73 0

[startup+0.0355469 s]
/proc/loadavg: 0.91 0.95 0.98 3/64 21807
/proc/meminfo: memFree=1890776/2055920 swapFree=4180832/4192956
[pid=21807] ppid=21805 vsize=2108 CPUtime=0.03
/proc/21807/stat : 21807 (precosat) R 21805 21807 21348 0 -1 4194304 437 0 0 0 3 0 0 0 18 0 1 0 98475423 2158592 417 1992294400 134512640 135151029 4294956240 18446744073709551615 134561396 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21807/statm: 527 417 79 155 0 370 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 2108

[startup+0.101554 s]
/proc/loadavg: 0.91 0.95 0.98 3/64 21807
/proc/meminfo: memFree=1890776/2055920 swapFree=4180832/4192956
[pid=21807] ppid=21805 vsize=2240 CPUtime=0.09
/proc/21807/stat : 21807 (precosat) R 21805 21807 21348 0 -1 4194304 473 0 0 0 9 0 0 0 18 0 1 0 98475423 2293760 453 1992294400 134512640 135151029 4294956240 18446744073709551615 134575503 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21807/statm: 560 453 79 155 0 403 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2240

[startup+0.301575 s]
/proc/loadavg: 0.91 0.95 0.98 3/64 21807
/proc/meminfo: memFree=1890776/2055920 swapFree=4180832/4192956
[pid=21807] ppid=21805 vsize=2288 CPUtime=0.29
/proc/21807/stat : 21807 (precosat) R 21805 21807 21348 0 -1 4194304 513 0 0 0 29 0 0 0 19 0 1 0 98475423 2342912 493 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21807/statm: 572 493 79 155 0 415 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2288

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

Child status: 20
Real time (s): 0.33579
CPU time (s): 0.334948
CPU user time (s): 0.332949
CPU system time (s): 0.001999
CPU usage (%): 99.7492
Max. virtual memory (cumulated for all children) (KiB): 2288

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.332949
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 539
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= 0

runsolver used 0.002999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node42 at 2009-04-26 02:07:52
IDJOB=1725401
IDBENCH=24582
IDSOLVER=507
FILE ID=node42/1725401-1240704472
PBS_JOBID= 9186753
Free space on /tmp= 66328 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00090.sat05-1326.reshuffled-07.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1725401-1240704472/watcher-1725401-1240704472 -o /tmp/evaluation-result-1725401-1240704472/solver-1725401-1240704472 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1725401-1240704472.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= fc73c241ff6e8e1a49a6ff2500eb7905
RANDOM SEED=1012122787

node42.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		: 3000.232
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		: 3000.232
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:       1891256 kB
Buffers:         18016 kB
Cached:          85028 kB
SwapCached:       5688 kB
Active:          29916 kB
Inactive:        81224 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1891256 kB
SwapTotal:     4192956 kB
SwapFree:      4180832 kB
Dirty:            1244 kB
Writeback:           0 kB
Mapped:          14048 kB
Slab:            39608 kB
Committed_AS:   460244 kB
PageTables:       1388 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= 66328 MiB
End job on node42 at 2009-04-26 02:07:53