Trace number 1719536

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 1.83072 1.8304

General information on the benchmark

Namecmu-bmc-barrel6.cnf
MD5SUMcc87f90bf08e13838e59f0f2639db121
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.108983
Satisfiable
(Un)Satisfiability was proved
Number of variables2306
Number of clauses8931
Sum of the clauses size24664
Maximum clause length217
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22629
Number of clauses of size 36048
Number of clauses of size 4252
Number of clauses of size 50
Number of clauses of size over 52

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-1719536-1240647462.cnf
0.00/0.00	c found header 'p cnf 2306 8931'
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     8931    2072      0   234      0       0      0    0.0   0    1
0.39/0.46	c s    0.5     3396     316    342   234   1414       0      0    0.0   0    1
0.39/0.46	c l    0.5     3396     316    342   234   1414       0   3396    0.0   0    1
0.39/0.47	c R    0.5     3401     315    343   234   1414     118    114   16.5  12    1
0.39/0.47	c R    0.5     3406     315    343   234   1414     218    209   24.2  15    1
0.49/0.51	c R    0.5     3411     315    343   234   1414     819    805   30.8  19    1
0.49/0.52	c B    0.5     3414     315    343   234   1414    1001    984   30.3  21    1
0.49/0.59	c s    0.6     3404     315    343   234   1414    1871   1833   30.2  20    1
0.49/0.60	c B    0.6     3404     315    343   234   1414    2001   1963   31.3  22    1
0.59/0.63	c R    0.6     3407     315    343   234   1414    2423   2382   30.0  21    1
0.69/0.70	c +    0.7     3413     315    343   234   1414    3396   3735   32.0  19    2
0.69/0.76	c +    0.8     3422     315    343   234   1414    4245   4108   34.2  20    2
0.79/0.82	c s    0.8     3435     315    343   234   1414    4873   4122   35.2  20    2
0.79/0.86	c +    0.9     3436     315    343   234   1414    5306   4518   34.2  19    2
0.89/0.95	c R    1.0     3444     315    343   234   1414    6436   4532   32.1  20    2
0.89/0.97	c +    1.0     3446     315    343   234   1414    6632   4969   33.6  23    2
1.00/1.08	c B    1.1     3459     315    343   234   1414    8005   4991   33.0  21    2
1.00/1.10	c +    1.1     3460     315    343   234   1414    8291   5465   32.6  18    2
1.10/1.19	c s    1.2     3465     315    343   234   1414    9194   5468   32.0  19    2
1.19/1.29	c
1.19/1.29	c       original/binary      fixed     eliminated      learned       agility
1.19/1.29	c   seconds        variables     equivalent    conflicts       height       MB
1.19/1.29	c
1.19/1.29	c +    1.3     3478     315    343   234   1414   10361   6011   31.1  19    2
1.49/1.51	c +    1.5     3515     315    343   234   1414   12951   6612   31.0  20    2
1.59/1.67	c s    1.7     3557     315    343   234   1414   14375   6621   30.1  17    2
1.79/1.82	c 0    1.8    11981      83    569   240   1414   15999   6611   28.9  15    2
1.79/1.82	c
1.79/1.82	s UNSATISFIABLE
1.79/1.82	c
1.79/1.82	c 15999 conflicts, 51164 decisions, 1 random
1.79/1.82	c 9 iterations, 65 restarts, 0 skipped
1.79/1.82	c 7 enlarged, 13 shrunken, 156 rescored, 9 rebiased
1.79/1.82	c 5 simplifications, 0 reductions
1.79/1.82	c
1.79/1.82	c vars: 569 fixed, 240 equiv, 1414 elim, 280 merged
1.79/1.82	c elim: 84394 resolutions, 1 phases, 1 rounds
1.79/1.82	c sbst: 98% substituted, 0.0% nots, 15.2% ands, 84.8% xors, 0.0% ites
1.79/1.82	c arty: 3.00 and 2.00 xor average arity
1.79/1.82	c prbe: 7550 probed, 2 phases, 3 rounds
1.79/1.82	c prbe: 0 failed, 342 lifted, 0 merged
1.79/1.82	c sccs: 0 non trivial, 0 fixed, 0 merged
1.79/1.82	c hash: 327 units, 280 merged
1.79/1.82	c mins: 681433 learned, 46% deleted, 1 strong, 10 depth
1.79/1.82	c subs: 0 forward, 0 backward, 7838 doms
1.79/1.82	c strs: 0 forward, 68 backward
1.79/1.82	c doms: 7877 dominators, 6900 high, 477 low
1.79/1.82	c prps: 1144199 propagations, 0.63 megaprops
1.79/1.82	c
1.79/1.82	c 1.8 seconds, 2 MB max, 2 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-1719536-1240647462/watcher-1719536-1240647462 -o /tmp/evaluation-result-1719536-1240647462/solver-1719536-1240647462 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1719536-1240647462.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: 1.58 1.76 1.44 2/64 17713
/proc/meminfo: memFree=1750144/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=1192 CPUtime=0
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 193 0 0 0 0 0 0 0 18 0 1 0 92779641 1220608 178 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 298 178 63 155 0 141 0

[startup+0.020625 s]
/proc/loadavg: 1.58 1.76 1.44 2/64 17713
/proc/meminfo: memFree=1750144/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=1712 CPUtime=0.01
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 342 0 0 0 1 0 0 0 18 0 1 0 92779641 1753088 326 1992294400 134512640 135151029 4294956240 18446744073709551615 134578560 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 428 326 79 155 0 271 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1712

[startup+0.101601 s]
/proc/loadavg: 1.58 1.76 1.44 2/64 17713
/proc/meminfo: memFree=1750144/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=1844 CPUtime=0.09
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 389 0 0 0 9 0 0 0 18 0 1 0 92779641 1888256 373 1992294400 134512640 135151029 4294956240 18446744073709551615 134548058 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 461 373 79 155 0 304 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1844

[startup+0.301544 s]
/proc/loadavg: 1.58 1.76 1.44 2/64 17713
/proc/meminfo: memFree=1750144/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=2108 CPUtime=0.29
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 460 0 0 0 29 0 0 0 19 0 1 0 92779641 2158592 444 1992294400 134512640 135151029 4294956240 18446744073709551615 134548564 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 527 444 79 155 0 370 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2108

[startup+0.701432 s]
/proc/loadavg: 1.58 1.76 1.44 2/64 17713
/proc/meminfo: memFree=1750144/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=2372 CPUtime=0.69
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 504 0 0 0 69 0 0 0 23 0 1 0 92779641 2428928 488 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 593 488 79 155 0 436 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2372

[startup+1.50121 s]
/proc/loadavg: 1.58 1.76 1.44 2/65 17714
/proc/meminfo: memFree=1747960/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=3176 CPUtime=1.49
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 694 0 0 0 149 0 0 0 25 0 1 0 92779641 3252224 678 1992294400 134512640 135151029 4294956240 18446744073709551615 134567994 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 794 678 79 155 0 637 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 3176

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

[startup+1.70115 s]
/proc/loadavg: 1.58 1.76 1.44 2/65 17714
/proc/meminfo: memFree=1747960/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=3260 CPUtime=1.69
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 731 0 0 0 169 0 0 0 25 0 1 0 92779641 3338240 715 1992294400 134512640 135151029 4294956240 18446744073709551615 134554903 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 815 715 79 155 0 658 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 3260

[startup+1.80112 s]
/proc/loadavg: 1.58 1.76 1.44 2/65 17714
/proc/meminfo: memFree=1747960/2055920 swapFree=4181364/4192956
[pid=17713] ppid=17711 vsize=3260 CPUtime=1.79
/proc/17713/stat : 17713 (precosat) R 17711 17713 17555 0 -1 4194304 735 0 0 0 179 0 0 0 25 0 1 0 92779641 3338240 719 1992294400 134512640 135151029 4294956240 18446744073709551615 134567746 0 0 4096 17442 0 0 0 17 1 0 0
/proc/17713/statm: 815 719 79 155 0 658 0
Current children cumulated CPU time (s) 1.79
Current children cumulated vsize (KiB) 3260

Child status: 20
Real time (s): 1.8304
CPU time (s): 1.83072
CPU user time (s): 1.82572
CPU system time (s): 0.004999
CPU usage (%): 100.018
Max. virtual memory (cumulated for all children) (KiB): 3260

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.82572
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= 776
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= 4

runsolver used 0.004999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node16 at 2009-04-25 10:17:42
IDJOB=1719536
IDBENCH=69564
IDSOLVER=507
FILE ID=node16/1719536-1240647462
PBS_JOBID= 9186479
Free space on /tmp= 66320 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT_RACE08/cnf/cmu-bmc-barrel6.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1719536-1240647462/watcher-1719536-1240647462 -o /tmp/evaluation-result-1719536-1240647462/solver-1719536-1240647462 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1719536-1240647462.cnf

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

MD5SUM BENCH= cc87f90bf08e13838e59f0f2639db121
RANDOM SEED=1638664057

node16.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		: 3000.234
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		: 3000.234
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:       1750560 kB
Buffers:         33304 kB
Cached:         218912 kB
SwapCached:       6388 kB
Active:          30220 kB
Inactive:       230960 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1750560 kB
SwapTotal:     4192956 kB
SwapFree:      4181364 kB
Dirty:            1268 kB
Writeback:           0 kB
Mapped:          13572 kB
Slab:            30180 kB
Committed_AS:   316592 kB
PageTables:       1436 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= 66320 MiB
End job on node16 at 2009-04-25 10:17:44