Trace number 310836

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
CMUSAT BASE 2007-02-08UNSAT 1.81872 1.82116

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1240130681-11-UNSAT.cnf
MD5SUM76f071535d514b4b4cd5d986eb064c1d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.396938
Satisfiable
(Un)Satisfiability was proved
Number of variables1294
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

1.73/1.81	c Number of variables:  1295
1.73/1.81	c Number of clauses:    4026
1.73/1.81	c DBreduced=0 GV=102[0]  GL=4127[ 4026,101] Prune=315 decisions=212 restart=0 est=2.93472 DB Impl=19182[0]  
1.73/1.81	c DBreduced=0 GV=151[0]  GL=4175[ 4026,149] Prune=440 decisions=288 restart=1 est=3.32058 DB Impl=28162[0]  
1.73/1.81	c DBreduced=0 GV=226[0]  GL=4250[ 4026,224] Prune=618 decisions=391 restart=2 est=3.32082 DB Impl=42805[0]  
1.73/1.81	c DBreduced=0 GV=338[0]  GL=4362[ 4026,336] Prune=909 decisions=570 restart=3 est=3.32249 DB Impl=61587[0]  
1.73/1.81	c DBreduced=0 GV=508[0]  GL=4532[ 4026,506] Prune=1281 decisions=772 restart=4 est=3.32082 DB Impl=93577[0]  
1.73/1.81	c DBreduced=0 GV=760[0]  GL=4784[ 4026,758] Prune=1853 decisions=1092 restart=5 est=3.32189 DB Impl=141065[0]  
1.73/1.81	c DBreduced=0 GV=1140[0]  GL=5164[ 4026,1138] Prune=2705 decisions=1564 restart=6 est=3.32082 DB Impl=211797[0]  
1.73/1.81	c DBreduced=0 GV=1711[0]  GL=5735[ 4026,1709] Prune=4032 decisions=2320 restart=7 est=3.3207 DB Impl=313771[0]  
1.73/1.81	c DBreduced=3 GV=2563[0]  GL=5335[ 4026,1309] Prune=6005 decisions=3441 restart=8 est=3.32082 DB Impl=467459[0]  
1.73/1.81	c DBreduced=4 GV=3845[0]  GL=5477[ 4026,1451] Prune=8985 decisions=5139 restart=9 est=3.32064 DB Impl=705171[0]  
1.73/1.81	c DBreduced=5 GV=5768[0]  GL=6393[ 4026,2367] Prune=13331 decisions=7562 restart=10 est=3.32279 DB Impl=1055868[0]  
1.73/1.81	c DBreduced=7 GV=8650[0]  GL=6779[ 4026,2753] Prune=19803 decisions=11152 restart=11 est=3.39906 DB Impl=1586445[0]  
1.73/1.81	c DBreduced=9 GV=12976[0]  GL=8243[ 4026,4217] Prune=29418 decisions=16441 restart=12 est=4.17209 DB Impl=2377090[0]  
1.73/1.81	c #Total time (in seconds): 1.81272
1.73/1.81	c #Memory used (in MB): 4.28516
1.73/1.81	c 
1.73/1.81	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node11/watcher-310836-1172562150 -o ROOT/results/node11/solver-310836-1172562150 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310836-1172562150/cmusat_base /tmp/evaluation/310836-1172562150/instance-310836-1172562150.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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 14795
/proc/meminfo: memFree=1569592/2055920 swapFree=4192812/4192956
[pid=14795] ppid=14793 vsize=2320 CPUtime=0
/proc/14795/stat : 14795 (cmusat_base) R 14793 14795 13808 0 -1 4194304 188 0 0 0 0 0 0 0 18 0 1 0 276169540 2375680 170 18446744073709551615 134512640 135500113 4294956688 18446744073709551615 134564250 0 0 4096 35 0 0 0 17 1 0 0
/proc/14795/statm: 580 170 90 241 0 336 0

[startup+0.106946 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 14795
/proc/meminfo: memFree=1569592/2055920 swapFree=4192812/4192956
[pid=14795] ppid=14793 vsize=2864 CPUtime=0.1
/proc/14795/stat : 14795 (cmusat_base) R 14793 14795 13808 0 -1 4194304 315 0 0 0 10 0 0 0 18 0 1 0 276169540 2932736 297 18446744073709551615 134512640 135500113 4294956688 18446744073709551615 134564490 0 0 4096 35 0 0 0 17 1 0 0
/proc/14795/statm: 716 297 109 241 0 472 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2864

[startup+0.514994 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 14795
/proc/meminfo: memFree=1569592/2055920 swapFree=4192812/4192956
[pid=14795] ppid=14793 vsize=3260 CPUtime=0.51
/proc/14795/stat : 14795 (cmusat_base) R 14793 14795 13808 0 -1 4194304 429 0 0 0 51 0 0 0 22 0 1 0 276169540 3338240 411 18446744073709551615 134512640 135500113 4294956688 18446744073709551615 134550452 0 0 4096 35 0 0 0 17 1 0 0
/proc/14795/statm: 815 411 109 241 0 571 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 3260

[startup+1.33509 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 14796
/proc/meminfo: memFree=1568048/2055920 swapFree=4192812/4192956
[pid=14795] ppid=14793 vsize=3492 CPUtime=1.32
/proc/14795/stat : 14795 (cmusat_base) R 14793 14795 13808 0 -1 4194304 499 0 0 0 132 0 0 0 25 0 1 0 276169540 3575808 481 18446744073709551615 134512640 135500113 4294956688 18446744073709551615 134559940 0 0 4096 35 0 0 0 17 1 0 0
/proc/14795/statm: 873 481 109 241 0 629 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 3492

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

[startup+1.64113 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 14796
/proc/meminfo: memFree=1568048/2055920 swapFree=4192812/4192956
[pid=14795] ppid=14793 vsize=4388 CPUtime=1.63
/proc/14795/stat : 14795 (cmusat_base) R 14793 14795 13808 0 -1 4194304 657 0 0 0 163 0 0 0 25 0 1 0 276169540 4493312 639 18446744073709551615 134512640 135500113 4294956688 18446744073709551615 134559905 0 0 4096 35 0 0 0 17 1 0 0
/proc/14795/statm: 1097 639 109 241 0 853 0
Current children cumulated CPU time (s) 1.63
Current children cumulated vsize (KiB) 4388

[startup+1.74314 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 14796
/proc/meminfo: memFree=1568048/2055920 swapFree=4192812/4192956
[pid=14795] ppid=14793 vsize=4388 CPUtime=1.73
/proc/14795/stat : 14795 (cmusat_base) R 14793 14795 13808 0 -1 4194304 659 0 0 0 173 0 0 0 25 0 1 0 276169540 4493312 641 18446744073709551615 134512640 135500113 4294956688 18446744073709551615 134560558 0 0 4096 35 0 0 0 17 1 0 0
/proc/14795/statm: 1097 641 109 241 0 853 0
Current children cumulated CPU time (s) 1.73
Current children cumulated vsize (KiB) 4388

Child status: 20
Real time (s): 1.82116
CPU time (s): 1.81872
CPU user time (s): 1.81272
CPU system time (s): 0.005999
CPU usage (%): 99.8663
Max. virtual memory (cumulated for all children) (KiB): 4388

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.81272
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= 668
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= 39

runsolver used 0.005999 second user time and 0.007998 second system time

The end

Launcher Data (download as text)

Begin job on node11 on Tue Feb 27 07:42:30 UTC 2007

IDJOB= 310836
IDBENCH= 20297
IDSOLVER= 120
FILE ID= node11/310836-1172562150

PBS_JOBID= 3971665

Free space on /tmp= 66557 MiB

SOLVER NAME= CMUSAT BASE 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1240130681-11-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310836-1172562150/cmusat_base /tmp/evaluation/310836-1172562150/instance-310836-1172562150.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node11/watcher-310836-1172562150 -o ROOT/results/node11/solver-310836-1172562150 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310836-1172562150/cmusat_base /tmp/evaluation/310836-1172562150/instance-310836-1172562150.cnf            

META MD5SUM SOLVER= af990fb12f8926fdd756b397adb3b5cf
MD5SUM BENCH=  76f071535d514b4b4cd5d986eb064c1d

RANDOM SEED= 386126456

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node11.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		: 3000.243
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		: 3000.243
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:       1569936 kB
Buffers:         52808 kB
Cached:         319832 kB
SwapCached:          0 kB
Active:         251264 kB
Inactive:       164640 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1569936 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2620 kB
Writeback:           0 kB
Mapped:          62232 kB
Slab:            55604 kB
Committed_AS:   807460 kB
PageTables:       1756 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= 66557 MiB

End job on node11 on Tue Feb 27 07:42:32 UTC 2007