Trace number 421679

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
minisat SAT 2007UNSAT 0.265959 0.267691

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 benchmark0.253961
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 (download as text)

0.00/0.00	c This is MiniSat 2.0 (Feb 1 2007, SAT-Competition version)
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.00	c |  Number of variables:  322                                                  |
0.00/0.00	c |  Number of clauses:    9322                                                 |
0.00/0.02	c |  Parsing time:         0.02         s                                       |
0.19/0.26	c restarts              : 0
0.19/0.26	c conflicts             : 0              (0 /sec)
0.19/0.26	c decisions             : 0              ( nan % random) (0 /sec)
0.19/0.26	c propagations          : 22             (85 /sec)
0.19/0.26	c conflict literals     : 0              ( nan % deleted)
0.19/0.26	c Memory used           : 3.86 MB
0.19/0.26	c CPU time              : 0.25996 s
0.19/0.26	c 
0.19/0.26	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node68/watcher-421679-1177494351 -o ROOT/results/node68/solver-421679-1177494351 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/421679-1177494351/minisat_noassertions /tmp/evaluation/421679-1177494351/instance-421679-1177494351.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: 0.92 0.99 0.93 3/64 14992
/proc/meminfo: memFree=1674344/2055920 swapFree=4183916/4192956
[pid=14992] ppid=14990 vsize=1856 CPUtime=0
/proc/14992/stat : 14992 (minisat_noasser) R 14990 14992 14509 0 -1 4194304 202 0 0 0 0 0 0 0 18 0 1 0 225424631 1900544 188 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 1 0 0
/proc/14992/statm: 464 189 50 130 0 331 0

[startup+0.049596 s]
/proc/loadavg: 0.92 0.99 0.93 3/64 14992
/proc/meminfo: memFree=1674344/2055920 swapFree=4183916/4192956
[pid=14992] ppid=14990 vsize=2692 CPUtime=0.04
/proc/14992/stat : 14992 (minisat_noasser) R 14990 14992 14509 0 -1 4194304 413 0 0 0 4 0 0 0 18 0 1 0 225424631 2756608 399 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134529703 0 0 4096 3 0 0 0 17 1 0 0
/proc/14992/statm: 673 399 62 130 0 540 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 2692

[startup+0.1016 s]
/proc/loadavg: 0.92 0.99 0.93 3/64 14992
/proc/meminfo: memFree=1674344/2055920 swapFree=4183916/4192956
[pid=14992] ppid=14990 vsize=3380 CPUtime=0.09
/proc/14992/stat : 14992 (minisat_noasser) R 14990 14992 14509 0 -1 4194304 585 0 0 0 9 0 0 0 18 0 1 0 225424631 3461120 571 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134529445 0 0 4096 3 0 0 0 17 1 0 0
/proc/14992/statm: 845 571 62 130 0 712 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3380

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

[startup+0.201609 s]
/proc/loadavg: 0.92 0.99 0.93 3/64 14992
/proc/meminfo: memFree=1674344/2055920 swapFree=4183916/4192956
[pid=14992] ppid=14990 vsize=3708 CPUtime=0.19
/proc/14992/stat : 14992 (minisat_noasser) R 14990 14992 14509 0 -1 4194304 664 0 0 0 19 0 0 0 19 0 1 0 225424631 3796992 650 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134529363 0 0 4096 3 0 0 0 17 1 0 0
/proc/14992/statm: 927 650 62 130 0 794 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 3708

Child status: 20
Real time (s): 0.267691
CPU time (s): 0.265959
CPU user time (s): 0.25996
CPU system time (s): 0.005999
CPU usage (%): 99.353
Max. virtual memory (cumulated for all children) (KiB): 3708

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.25996
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= 743
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= 1

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node68 on Wed Apr 25 09:45:51 UTC 2007

IDJOB= 421679
IDBENCH= 24582
IDSOLVER= 188
FILE ID= node68/421679-1177494351

PBS_JOBID= 4685760

Free space on /tmp= 66443 MiB

SOLVER NAME= minisat SAT 2007
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00090.sat05-1326.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/421679-1177494351/minisat_noassertions /tmp/evaluation/421679-1177494351/instance-421679-1177494351.cnf
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node68/watcher-421679-1177494351 -o ROOT/results/node68/solver-421679-1177494351 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/421679-1177494351/minisat_noassertions /tmp/evaluation/421679-1177494351/instance-421679-1177494351.cnf

META MD5SUM SOLVER= 80cbedba287df00eb7b45eadedad758b
MD5SUM BENCH=  fc73c241ff6e8e1a49a6ff2500eb7905

RANDOM SEED= 55708238

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node68.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		: 3000.216
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		: 3000.216
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:       1674688 kB
Buffers:         33220 kB
Cached:         209836 kB
SwapCached:       3172 kB
Active:         190108 kB
Inactive:       134360 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1674688 kB
SwapTotal:     4192956 kB
SwapFree:      4183916 kB
Dirty:            1788 kB
Writeback:           0 kB
Mapped:          87264 kB
Slab:            42588 kB
Committed_AS:  2953868 kB
PageTables:       1568 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= 66443 MiB

End job on node68 on Wed Apr 25 09:45:51 UTC 2007