Trace number 1725436

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
MiniSat 2.1 (Sat-race'08 Edition)UNSAT 0.259959 0.25867

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 WARNING: for repeatability, setting FPU to use double precision
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.01	c |  Number of variables:           322                                         |
0.00/0.01	c |  Number of clauses:            9321                                         |
0.00/0.01	c |  Parse time:                   0.01 s                                       |
0.19/0.25	c |  Simplification time:          0.24 s                                       |
0.19/0.25	c |                                                                             |
0.19/0.25	c ===============================================================================
0.19/0.25	c Solved by simplification
0.19/0.25	c restarts              : 0
0.19/0.25	c conflicts             : 0              (0 /sec)
0.19/0.25	c decisions             : 0              (0 /sec)
0.19/0.25	c propagations          : 22             (87 /sec)
0.19/0.25	c conflict literals     : 0              ( nan % deleted)
0.19/0.25	c Memory used           : 8.04 MB
0.19/0.25	c CPU time              : 0.252961 s
0.19/0.25	c 
0.19/0.25	s UNSATISFIABLE

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-1725436-1240704686/watcher-1725436-1240704686 -o /tmp/evaluation-result-1725436-1240704686/solver-1725436-1240704686 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/minisat HOME/instance-1725436-1240704686.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: 0.99 1.00 1.00 2/64 16016
/proc/meminfo: memFree=1642920/2055920 swapFree=4192956/4192956
[pid=16016] ppid=16014 vsize=7468 CPUtime=0
/proc/16016/stat : 16016 (minisat) R 16014 16016 15466 0 -1 4194304 240 0 0 0 0 0 0 0 18 0 1 0 98502006 7647232 224 1992294400 4194304 5092341 548682068832 18446744073709551615 4270144 0 0 4096 3 0 0 0 17 1 0 0
/proc/16016/statm: 1867 224 63 219 0 1645 0

[startup+0.094323 s]
/proc/loadavg: 0.99 1.00 1.00 2/64 16016
/proc/meminfo: memFree=1642920/2055920 swapFree=4192956/4192956
[pid=16016] ppid=16014 vsize=8152 CPUtime=0.08
/proc/16016/stat : 16016 (minisat) R 16014 16016 15466 0 -1 4194304 564 0 0 0 8 0 0 0 18 0 1 0 98502006 8347648 548 1992294400 4194304 5092341 548682068832 18446744073709551615 4219439 0 0 4096 3 0 0 0 17 1 0 0
/proc/16016/statm: 2038 548 88 219 0 1816 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 8152

[startup+0.102322 s]
/proc/loadavg: 0.99 1.00 1.00 2/64 16016
/proc/meminfo: memFree=1642920/2055920 swapFree=4192956/4192956
[pid=16016] ppid=16014 vsize=8288 CPUtime=0.09
/proc/16016/stat : 16016 (minisat) R 16014 16016 15466 0 -1 4194304 575 0 0 0 9 0 0 0 18 0 1 0 98502006 8486912 559 1992294400 4194304 5092341 548682068832 18446744073709551615 4219711 0 0 4096 3 0 0 0 17 1 0 0
/proc/16016/statm: 2072 559 88 219 0 1850 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 8288

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

[startup+0.201337 s]
/proc/loadavg: 0.99 1.00 1.00 2/64 16016
/proc/meminfo: memFree=1642920/2055920 swapFree=4192956/4192956
[pid=16016] ppid=16014 vsize=8288 CPUtime=0.19
/proc/16016/stat : 16016 (minisat) R 16014 16016 15466 0 -1 4194304 605 0 0 0 19 0 0 0 18 0 1 0 98502006 8486912 589 1992294400 4194304 5092341 548682068832 18446744073709551615 4223486 0 0 4096 3 0 0 0 17 1 0 0
/proc/16016/statm: 2072 589 88 219 0 1850 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 8288

Child status: 20
Real time (s): 0.25867
CPU time (s): 0.259959
CPU user time (s): 0.252961
CPU system time (s): 0.006998
CPU usage (%): 100.498
Max. virtual memory (cumulated for all children) (KiB): 8288

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.252961
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 629
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node15 at 2009-04-26 02:11:26
IDJOB=1725436
IDBENCH=24582
IDSOLVER=546
FILE ID=node15/1725436-1240704686
PBS_JOBID= 9186740
Free space on /tmp= 66268 MiB

SOLVER NAME= MiniSat 2.1 (Sat-race'08 Edition)
BENCH NAME= SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00090.sat05-1326.reshuffled-07.cnf
COMMAND LINE= HOME/minisat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1725436-1240704686/watcher-1725436-1240704686 -o /tmp/evaluation-result-1725436-1240704686/solver-1725436-1240704686 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/minisat HOME/instance-1725436-1240704686.cnf

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

MD5SUM BENCH= fc73c241ff6e8e1a49a6ff2500eb7905
RANDOM SEED=2102354094

node15.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		: 3000.220
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		: 3000.220
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:       1643400 kB
Buffers:         43944 kB
Cached:         293880 kB
SwapCached:          0 kB
Active:         115648 kB
Inactive:       236616 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1643400 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            1288 kB
Writeback:           0 kB
Mapped:          23708 kB
Slab:            46256 kB
Committed_AS:   338848 kB
PageTables:       1464 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= 66268 MiB
End job on node15 at 2009-04-26 02:11:26