Trace number 1733848

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 0.185971 0.185563

General information on the benchmark

NameCRAFTED/modcircuits/
owp_4vars_5gates.cnf
MD5SUMfe245e5f46bcc987fd412946151b9c92
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.06099
Satisfiable
(Un)Satisfiability was proved
Number of variables267
Number of clauses23747
Sum of the clauses size136362
Maximum clause length19
Minimum clause length1
Number of clauses of size 164
Number of clauses of size 2700
Number of clauses of size 31
Number of clauses of size 4563
Number of clauses of size 51926
Number of clauses of size over 520493

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-1733848-1240793250.cnf
0.00/0.00	c found header 'p cnf 267 23747'
0.01/0.02	c finished parsing
0.01/0.02	c
0.01/0.02	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.01/0.02	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.01/0.02	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.01/0.02	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.01/0.02	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.01/0.02	c --random=1 --spread=2000 --seed=0 --skip=25
0.01/0.02	c
0.01/0.02	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.01/0.02	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.01/0.02	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.01/0.02	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.01/0.02	c
0.01/0.02	c starting search after 0.0 seconds
0.01/0.02	c no decision limit
0.01/0.02	c
0.01/0.02	c       original/binary      fixed     eliminated      learned       agility
0.01/0.02	c   seconds        variables     equivalent    conflicts       height       MB
0.01/0.02	c
0.01/0.02	c *    0.0    23683     203     64     0      0       0      0    0.0   0    2
0.01/0.05	c -    0.1     7915     168     79    12      8       0   1000    0.0   0    1
0.01/0.06	c -    0.1     7766     163     79    12     13       0   1000    0.0   0    1
0.01/0.06	c -    0.1     7625     161     79    12     15       0   1000    0.0   0    1
0.01/0.07	c -    0.1     7534     159     79    12     17       0   1000    0.0   0    1
0.09/0.15	c s    0.2     7090     133     79    12     43       0      0    0.0   0    1
0.09/0.15	c l    0.2     7090     133     79    12     43       0   6769    0.0   0    1
0.09/0.15	c R    0.2     7090     133     79    12     43     101    101   13.3   8    1
0.09/0.16	c R    0.2     7091     133     79    12     43     201    201   10.9  14    1
0.09/0.17	c N    0.2     7102     133     79    12     43     802    795    8.3  31    1
0.09/0.17	c B    0.2     7126     130     82    12     43    1000    984    7.8  32    1
0.09/0.18	c 0    0.2     7180      93    119    12     43    1199   1175    7.5  32    1
0.09/0.18	c
0.09/0.18	s UNSATISFIABLE
0.09/0.18	c
0.09/0.18	c 1199 conflicts, 1690 decisions, 1 random
0.09/0.18	c 3 iterations, 4 restarts, 4 skipped
0.09/0.18	c 0 enlarged, 63 shrunken, 11 rescored, 1 rebiased
0.09/0.18	c 1 simplifications, 0 reductions
0.09/0.18	c
0.09/0.18	c vars: 119 fixed, 12 equiv, 43 elim, 20 merged
0.09/0.18	c elim: 46988 resolutions, 1 phases, 1 rounds
0.09/0.18	c sbst: 35% substituted, 13.3% nots, 86.7% ands, 0.0% xors, 0.0% ites
0.09/0.18	c arty: 3.92 and 0.00 xor average arity
0.09/0.18	c prbe: 1093 probed, 1 phases, 3 rounds
0.09/0.18	c prbe: 15 failed, 0 lifted, 0 merged
0.09/0.18	c sccs: 0 non trivial, 0 fixed, 0 merged
0.09/0.18	c hash: 9 units, 20 merged
0.09/0.18	c mins: 8725 learned, 25% deleted, 3 strong, 8 depth
0.09/0.18	c subs: 2165 forward, 731 backward, 37 doms
0.09/0.18	c strs: 2949 forward, 67 backward
0.09/0.18	c doms: 37 dominators, 27 high, 6 low
0.09/0.18	c prps: 37134 propagations, 0.20 megaprops
0.09/0.18	c
0.09/0.18	c 0.2 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-1733848-1240793250/watcher-1733848-1240793250 -o /tmp/evaluation-result-1733848-1240793250/solver-1733848-1240793250 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1733848-1240793250.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: 2.00 1.86 1.52 3/64 24698
/proc/meminfo: memFree=1769448/2055920 swapFree=4181732/4192956
[pid=24698] ppid=24696 vsize=1052 CPUtime=0
/proc/24698/stat : 24698 (precosat) R 24696 24698 24546 0 -1 4194304 162 0 0 0 0 0 0 0 18 0 1 0 107352522 1077248 147 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24698/statm: 263 149 63 155 0 106 0

[startup+0.0173701 s]
/proc/loadavg: 2.00 1.86 1.52 3/64 24698
/proc/meminfo: memFree=1769448/2055920 swapFree=4181732/4192956
[pid=24698] ppid=24696 vsize=1984 CPUtime=0.01
/proc/24698/stat : 24698 (precosat) R 24696 24698 24546 0 -1 4194304 388 0 0 0 1 0 0 0 18 0 1 0 107352522 2031616 373 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24698/statm: 496 373 63 155 0 339 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1984

[startup+0.101375 s]
/proc/loadavg: 2.00 1.86 1.52 3/64 24698
/proc/meminfo: memFree=1769448/2055920 swapFree=4181732/4192956
[pid=24698] ppid=24696 vsize=2556 CPUtime=0.09
/proc/24698/stat : 24698 (precosat) R 24696 24698 24546 0 -1 4194304 579 0 0 0 9 0 0 0 18 0 1 0 107352522 2617344 562 1992294400 134512640 135151029 4294956224 18446744073709551615 134517567 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24698/statm: 639 562 79 155 0 482 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2556

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

Child status: 20
Real time (s): 0.185563
CPU time (s): 0.185971
CPU user time (s): 0.179972
CPU system time (s): 0.005999
CPU usage (%): 100.22
Max. virtual memory (cumulated for all children) (KiB): 2556

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.179972
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 580
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= 1

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node52 at 2009-04-27 02:47:30
IDJOB=1733848
IDBENCH=71149
IDSOLVER=507
FILE ID=node52/1733848-1240793250
PBS_JOBID= 9187330
Free space on /tmp= 66232 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/CRAFTED/modcircuits/owp_4vars_5gates.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1733848-1240793250/watcher-1733848-1240793250 -o /tmp/evaluation-result-1733848-1240793250/solver-1733848-1240793250 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1733848-1240793250.cnf

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

MD5SUM BENCH= fe245e5f46bcc987fd412946151b9c92
RANDOM SEED=1049215609

node52.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		: 3000.214
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		: 3000.214
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:       1769864 kB
Buffers:         28084 kB
Cached:         179908 kB
SwapCached:       5120 kB
Active:          27652 kB
Inactive:       188284 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1769864 kB
SwapTotal:     4192956 kB
SwapFree:      4181732 kB
Dirty:            1324 kB
Writeback:           0 kB
Mapped:          13976 kB
Slab:            56036 kB
Committed_AS:   438700 kB
PageTables:       1476 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 node52 at 2009-04-27 02:47:31