Trace number 1773591

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 0.463929 0.468206

General information on the benchmark

NameAPPLICATIONS/bitverif/
minor/minor032.cnf
MD5SUM93c9f18c75548b864ec69c2789cae658
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.417936
Satisfiable
(Un)Satisfiability was proved
Number of variables4210
Number of clauses12053
Sum of the clauses size28121
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 28034
Number of clauses of size 34017
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

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-1773591-1241185639.cnf
0.00/0.00	c found header 'p cnf 4210 12053'
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
0.00/0.02	c
0.00/0.02	c       original/binary      fixed     eliminated      learned       agility
0.00/0.02	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.02	c
0.00/0.02	c *    0.0    12051    4208      2     0      0       0      0    0.0   0    1
0.19/0.26	c s    0.3     4186     497     25    96   3592       0      0    0.0   0    1
0.19/0.26	c l    0.3     4186     497     25    96   3592       0   2588    0.0   0    1
0.19/0.26	c R    0.3     4188     496     26    96   3592     130    129   81.2   5    1
0.19/0.26	c R    0.3     4191     496     26    96   3592     231    229   81.8   8    1
0.19/0.29	c R    0.3     4196     496     26    96   3592     832    830   81.4  13    1
0.19/0.29	c B    0.3     4196     496     26    96   3592    1001    999   81.3  13    1
0.29/0.34	c B    0.3     4214     495     27    96   3592    2001   1997   85.6  12    2
0.29/0.37	c +    0.4     4251     494     28    96   3592    2591   2846   80.5  12    2
0.39/0.40	c +    0.4     4255     494     28    96   3592    3235   3130   78.9  11    2
0.39/0.45	c s    0.4     4237     494     28    96   3592    3869   3113   75.8   9    2
0.39/0.46	c +    0.5     4237     494     28    96   3592    4040   3443   74.8   8    2
0.39/0.46	c 0    0.5     4260     464     58    96   3592    4276   3364   73.5   9    2
0.39/0.46	c
0.39/0.46	s UNSATISFIABLE
0.39/0.46	c
0.39/0.46	c 4276 conflicts, 17749 decisions, 8 random
0.39/0.46	c 5 iterations, 27 restarts, 0 skipped
0.39/0.46	c 3 enlarged, 19 shrunken, 41 rescored, 3 rebiased
0.39/0.46	c 2 simplifications, 0 reductions
0.39/0.46	c
0.39/0.46	c vars: 58 fixed, 96 equiv, 3592 elim, 96 merged
0.39/0.46	c elim: 136581 resolutions, 1 phases, 1 rounds
0.39/0.46	c sbst: 65% substituted, 0.0% nots, 100.0% ands, 0.0% xors, 0.0% ites
0.39/0.46	c arty: 2.17 and 0.00 xor average arity
0.39/0.46	c prbe: 16425 probed, 1 phases, 2 rounds
0.39/0.46	c prbe: 3 failed, 4 lifted, 0 merged
0.39/0.46	c sccs: 0 non trivial, 0 fixed, 0 merged
0.39/0.46	c hash: 0 units, 96 merged
0.39/0.46	c mins: 212865 learned, 12% deleted, 9 strong, 32 depth
0.39/0.46	c subs: 59 forward, 13 backward, 231 doms
0.39/0.46	c strs: 264 forward, 5 backward
0.39/0.46	c doms: 346 dominators, 7 high, 18 low
0.39/0.46	c prps: 387533 propagations, 0.84 megaprops
0.39/0.46	c
0.39/0.46	c 0.5 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-1773591-1241185639/watcher-1773591-1241185639 -o /tmp/evaluation-result-1773591-1241185639/solver-1773591-1241185639 -C 10000 -W 12000 -M 1800 HOME/precosat HOME/instance-1773591-1241185639.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 10000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 10030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 12000 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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.00 0.95 2/64 32178
/proc/meminfo: memFree=1066696/2055920 swapFree=4181900/4192956
[pid=32178] ppid=32176 vsize=920 CPUtime=0
/proc/32178/stat : 32178 (precosat) R 32176 32178 32079 0 -1 4194304 125 0 0 0 0 0 0 0 20 0 1 0 146591967 942080 110 1992294400 134512640 135151029 4294956240 18446744073709551615 134534335 0 0 4096 0 0 0 0 17 1 0 0
/proc/32178/statm: 230 110 59 155 0 73 0

[startup+0.0743541 s]
/proc/loadavg: 1.00 1.00 0.95 2/64 32178
/proc/meminfo: memFree=1066696/2055920 swapFree=4181900/4192956
[pid=32178] ppid=32176 vsize=2448 CPUtime=0.06
/proc/32178/stat : 32178 (precosat) R 32176 32178 32079 0 -1 4194304 599 0 0 0 6 0 0 0 20 0 1 0 146591967 2506752 522 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/32178/statm: 612 522 79 155 0 455 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 2448

[startup+0.101538 s]
/proc/loadavg: 1.00 1.00 0.95 2/64 32178
/proc/meminfo: memFree=1066696/2055920 swapFree=4181900/4192956
[pid=32178] ppid=32176 vsize=2760 CPUtime=0.09
/proc/32178/stat : 32178 (precosat) R 32176 32178 32079 0 -1 4194304 658 0 0 0 9 0 0 0 20 0 1 0 146591967 2826240 581 1992294400 134512640 135151029 4294956240 18446744073709551615 134573787 0 0 4096 17442 0 0 0 17 1 0 0
/proc/32178/statm: 690 581 79 155 0 533 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2760

[startup+0.301395 s]
/proc/loadavg: 1.00 1.00 0.95 2/64 32178
/proc/meminfo: memFree=1066696/2055920 swapFree=4181900/4192956
[pid=32178] ppid=32176 vsize=3252 CPUtime=0.29
/proc/32178/stat : 32178 (precosat) R 32176 32178 32079 0 -1 4194304 773 0 0 0 29 0 0 0 21 0 1 0 146591967 3330048 696 1992294400 134512640 135151029 4294956240 18446744073709551615 134554890 0 0 4096 17442 0 0 0 17 1 0 0
/proc/32178/statm: 813 696 79 155 0 656 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3252

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

[startup+0.401413 s]
/proc/loadavg: 1.00 1.00 0.95 2/64 32178
/proc/meminfo: memFree=1066696/2055920 swapFree=4181900/4192956
[pid=32178] ppid=32176 vsize=3252 CPUtime=0.39
/proc/32178/stat : 32178 (precosat) R 32176 32178 32079 0 -1 4194304 773 0 0 0 39 0 0 0 23 0 1 0 146591967 3330048 696 1992294400 134512640 135151029 4294956240 18446744073709551615 134554915 0 0 4096 17442 0 0 0 17 1 0 0
/proc/32178/statm: 813 696 79 155 0 656 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 3252

Child status: 20
Real time (s): 0.468206
CPU time (s): 0.463929
CPU user time (s): 0.45793
CPU system time (s): 0.005999
CPU usage (%): 99.0865
Max. virtual memory (cumulated for all children) (KiB): 3252

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.45793
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= 774
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= 1
involuntary context switches= 24

runsolver used 0.005999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node44 at 2009-05-01 15:47:20
IDJOB=1773591
IDBENCH=70757
IDSOLVER=607
FILE ID=node44/1773591-1241185639
PBS_JOBID= 9224586
Free space on /tmp= 66404 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/APPLICATIONS/bitverif/minor/minor032.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1773591-1241185639/watcher-1773591-1241185639 -o /tmp/evaluation-result-1773591-1241185639/solver-1773591-1241185639 -C 10000 -W 12000 -M 1800  HOME/precosat HOME/instance-1773591-1241185639.cnf

TIME LIMIT= 10000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 93c9f18c75548b864ec69c2789cae658
RANDOM SEED=1274223515

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:       1067176 kB
Buffers:         61708 kB
Cached:         831480 kB
SwapCached:       4956 kB
Active:          74656 kB
Inactive:       827044 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1067176 kB
SwapTotal:     4192956 kB
SwapFree:      4181900 kB
Dirty:             960 kB
Writeback:           0 kB
Mapped:          14572 kB
Slab:            73032 kB
Committed_AS:   702428 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= 66404 MiB
End job on node44 at 2009-05-01 15:47:20