Trace number 332520

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
picosat 535UNSAT 0.438933 0.441268

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)

0.39/0.43	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node6/watcher-332520-1173480940 -o ROOT/results/node6/solver-332520-1173480940 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/332520-1173480940/picosat /tmp/evaluation/332520-1173480940/instance-332520-1173480940.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 0.98 0.99 3/77 11403
/proc/meminfo: memFree=1472384/2055924 swapFree=4156956/4192956
[pid=11403] ppid=11401 vsize=568 CPUtime=0
/proc/11403/stat : 11403 (picosat) R 11401 11403 10945 0 -1 4194304 72 0 0 0 0 0 0 0 18 0 1 0 368048772 581632 57 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/11403/statm: 142 57 40 102 0 37 0

[startup+0.0709041 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 11403
/proc/meminfo: memFree=1472384/2055924 swapFree=4156956/4192956
[pid=11403] ppid=11401 vsize=700 CPUtime=0.06
/proc/11403/stat : 11403 (picosat) R 11401 11403 10945 0 -1 4194304 117 0 0 0 3 3 0 0 18 0 1 0 368048772 716800 102 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/11403/statm: 175 102 40 102 0 70 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 700

[startup+0.10191 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 11403
/proc/meminfo: memFree=1472384/2055924 swapFree=4156956/4192956
[pid=11403] ppid=11401 vsize=844 CPUtime=0.09
/proc/11403/stat : 11403 (picosat) R 11401 11403 10945 0 -1 4194304 138 0 0 0 5 4 0 0 18 0 1 0 368048772 864256 123 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134604413 0 0 4096 0 0 0 0 17 1 0 0
/proc/11403/statm: 211 123 40 102 0 106 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 844

[startup+0.30195 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 11403
/proc/meminfo: memFree=1472384/2055924 swapFree=4156956/4192956
[pid=11403] ppid=11401 vsize=1248 CPUtime=0.29
/proc/11403/stat : 11403 (picosat) R 11401 11403 10945 0 -1 4194304 257 0 0 0 20 9 0 0 19 0 1 0 368048772 1277952 240 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525849 0 0 4096 0 0 0 0 17 1 0 0
/proc/11403/statm: 312 240 48 102 0 207 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1248

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

[startup+0.40197 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 11403
/proc/meminfo: memFree=1472384/2055924 swapFree=4156956/4192956
[pid=11403] ppid=11401 vsize=1248 CPUtime=0.39
/proc/11403/stat : 11403 (picosat) R 11401 11403 10945 0 -1 4194304 261 0 0 0 30 9 0 0 19 0 1 0 368048772 1277952 244 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134543543 0 0 4096 0 0 0 0 17 1 0 0
/proc/11403/statm: 312 244 48 102 0 207 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 1248

Child status: 20
Real time (s): 0.441268
CPU time (s): 0.438933
CPU user time (s): 0.346947
CPU system time (s): 0.091986
CPU usage (%): 99.4708
Max. virtual memory (cumulated for all children) (KiB): 1248

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.346947
system time used= 0.091986
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 264
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 0.003999 second user time and 0.002999 second system time

The end

Launcher Data (download as text)

Begin job on node6 on Fri Mar  9 22:55:41 UTC 2007

IDJOB= 332520
IDBENCH= 24582
IDSOLVER= 106
FILE ID= node6/332520-1173480940

PBS_JOBID= 4101085

Free space on /tmp= 66369 MiB

SOLVER NAME= picosat 535
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00090.sat05-1326.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/332520-1173480940/picosat /tmp/evaluation/332520-1173480940/instance-332520-1173480940.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node6/watcher-332520-1173480940 -o ROOT/results/node6/solver-332520-1173480940 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/332520-1173480940/picosat /tmp/evaluation/332520-1173480940/instance-332520-1173480940.cnf            

META MD5SUM SOLVER= 1cb12d44dc66ecc4d20a168f5cfd1323
MD5SUM BENCH=  fc73c241ff6e8e1a49a6ff2500eb7905

RANDOM SEED= 238657029

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node6.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		: 3000.277
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		: 3000.277
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:      2055924 kB
MemFree:       1472856 kB
Buffers:         49696 kB
Cached:         444960 kB
SwapCached:       2152 kB
Active:         241392 kB
Inactive:       275888 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1472856 kB
SwapTotal:     4192956 kB
SwapFree:      4156956 kB
Dirty:             876 kB
Writeback:           0 kB
Mapped:          30716 kB
Slab:            51472 kB
Committed_AS:  1292168 kB
PageTables:       1744 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= 66369 MiB

End job on node6 on Fri Mar  9 22:55:41 UTC 2007