Trace number 456066

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
MiraXT v3UNSAT 0.25496 0.257384

General information on the benchmark

Namecrafted/Medium/contest05/pebbling/
unsat-pbl-00070.sat05-1324.reshuffled-07.cnf
MD5SUMe72b4e386685e8ae3270a3d69e1ae8da
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.251961
Satisfiable
(Un)Satisfiability was proved
Number of variables257
Number of clauses7375
Sum of the clauses size62500
Maximum clause length11
Minimum clause length1
Number of clauses of size 11
Number of clauses of size 211
Number of clauses of size 346
Number of clauses of size 4119
Number of clauses of size 5300
Number of clauses of size over 56898

Solver Data (download as text)

0.00/0.00	c Starting MiraXTv3...
0.19/0.25	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.4 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node48/watcher-456066-1179020169 -o ROOT/results/node48/solver-456066-1179020169 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/456066-1179020169/MiraXTv3_dyn /tmp/evaluation/456066-1179020169/instance-456066-1179020169.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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: 1.76 1.93 1.89 3/64 14519
/proc/meminfo: memFree=1065336/2055920 swapFree=4183980/4192956
[pid=14519] ppid=14517 vsize=3788 CPUtime=0
/proc/14519/stat : 14519 (MiraXTv3_dyn) R 14517 14519 14331 0 -1 4194304 340 0 0 0 0 0 0 0 18 0 1 0 256862283 3878912 315 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 3966587 0 0 4096 0 0 0 0 17 1 0 0
/proc/14519/statm: 947 319 206 20 0 305 0

[startup+0.023447 s]
/proc/loadavg: 1.76 1.93 1.89 3/64 14519
/proc/meminfo: memFree=1065336/2055920 swapFree=4183980/4192956
[pid=14519] ppid=14517 vsize=4584 CPUtime=0.02
/proc/14519/stat : 14519 (MiraXTv3_dyn) R 14517 14519 14331 0 -1 4194304 537 0 0 0 2 0 0 0 18 0 1 0 256862283 4694016 512 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 134584199 0 0 4096 0 0 0 0 17 1 0 0
/proc/14519/statm: 1146 512 207 20 0 504 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4584

[startup+0.101455 s]
/proc/loadavg: 1.76 1.93 1.89 3/64 14519
/proc/meminfo: memFree=1065336/2055920 swapFree=4183980/4192956
[pid=14519] ppid=14517 vsize=4760 CPUtime=0.09
/proc/14519/stat : 14519 (MiraXTv3_dyn) R 14517 14519 14331 0 -1 4194304 586 0 0 0 9 0 0 0 18 0 1 0 256862283 4874240 561 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 134583910 0 0 4096 0 0 0 0 17 1 0 0
/proc/14519/statm: 1190 561 207 20 0 548 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4760

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

[startup+0.201464 s]
/proc/loadavg: 1.76 1.93 1.89 3/64 14519
/proc/meminfo: memFree=1065336/2055920 swapFree=4183980/4192956
[pid=14519] ppid=14517 vsize=5056 CPUtime=0.19
/proc/14519/stat : 14519 (MiraXTv3_dyn) R 14517 14519 14331 0 -1 4194304 644 0 0 0 19 0 0 0 18 0 1 0 256862283 5177344 619 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 134583718 0 0 4096 0 0 0 0 17 1 0 0
/proc/14519/statm: 1264 619 207 20 0 622 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 5056

Child status: 20
Real time (s): 0.257384
CPU time (s): 0.25496
CPU user time (s): 0.253961
CPU system time (s): 0.000999
CPU usage (%): 99.0582
Max. virtual memory (cumulated for all children) (KiB): 5056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.253961
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 676
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= 12
involuntary context switches= 2

runsolver used 0.000999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node48 on Sun May 13 01:36:10 UTC 2007

IDJOB= 456066
IDBENCH= 24587
IDSOLVER= 196
FILE ID= node48/456066-1179020169

PBS_JOBID= 5253239

Free space on /tmp= 66546 MiB

SOLVER NAME= MiraXT v3
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00070.sat05-1324.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/456066-1179020169/MiraXTv3_dyn /tmp/evaluation/456066-1179020169/instance-456066-1179020169.cnf
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node48/watcher-456066-1179020169 -o ROOT/results/node48/solver-456066-1179020169 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/456066-1179020169/MiraXTv3_dyn /tmp/evaluation/456066-1179020169/instance-456066-1179020169.cnf

META MD5SUM SOLVER= 2ad149617ed8d249d89b067eb44c33da
MD5SUM BENCH=  e72b4e386685e8ae3270a3d69e1ae8da

RANDOM SEED= 409616056

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node48.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		: 3000.238
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		: 3000.238
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:       1065552 kB
Buffers:         55800 kB
Cached:         788756 kB
SwapCached:       3064 kB
Active:         461524 kB
Inactive:       394592 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1065552 kB
SwapTotal:     4192956 kB
SwapFree:      4183980 kB
Dirty:            4520 kB
Writeback:           0 kB
Mapped:          17460 kB
Slab:           120240 kB
Committed_AS:  3764164 kB
PageTables:       1392 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= 66546 MiB

End job on node48 on Sun May 13 01:36:10 UTC 2007