Trace number 310817

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
SAT7 2007-02-08UNSAT 1.2878 1.29637

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)

0.00/0.01	c Starting solver ...
0.00/0.02	c Restarting after 101 conflicts
0.00/0.04	c Restarting after 253 conflicts
0.00/0.06	c Restarting after 478 conflicts
0.00/0.10	c Restarting after 816 conflicts
0.10/0.15	c Restarting after 1323 conflicts
0.20/0.25	c Restarting after 2083 conflicts
0.30/0.39	c Restarting after 3222 conflicts
0.50/0.61	c Restarting after 4930 conflicts
0.91/0.94	c Restarting after 7494 conflicts
1.22/1.29	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/node77/watcher-310817-1172562065 -o ROOT/results/node77/solver-310817-1172562065 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310817-1172562065/sat7_bin /tmp/evaluation/310817-1172562065/instance-310817-1172562065.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: 0.99 0.97 0.99 3/67 8014
/proc/meminfo: memFree=1833152/2055892 swapFree=4086192/4096564
[pid=8014] ppid=8012 vsize=1256 CPUtime=0
/proc/8014/stat : 8014 (sat7_bin) R 8012 8014 7192 0 -1 4194304 163 0 0 0 0 0 0 0 18 0 1 0 51074043 1286144 147 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134546624 0 0 4096 0 0 0 0 17 0 0 0
/proc/8014/statm: 314 148 87 220 0 91 0

[startup+0.106772 s]
/proc/loadavg: 0.99 0.97 0.99 3/67 8014
/proc/meminfo: memFree=1833152/2055892 swapFree=4086192/4096564
[pid=8014] ppid=8012 vsize=1660 CPUtime=0.1
/proc/8014/stat : 8014 (sat7_bin) R 8012 8014 7192 0 -1 4194304 262 0 0 0 10 0 0 0 18 0 1 0 51074043 1699840 246 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134531803 0 0 4096 0 0 0 0 17 0 0 0
/proc/8014/statm: 415 246 95 220 0 192 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1660

[startup+0.514821 s]
/proc/loadavg: 0.99 0.97 0.99 3/67 8014
/proc/meminfo: memFree=1833152/2055892 swapFree=4086192/4096564
[pid=8014] ppid=8012 vsize=2176 CPUtime=0.5
/proc/8014/stat : 8014 (sat7_bin) R 8012 8014 7192 0 -1 4194304 326 0 0 0 50 0 0 0 22 0 1 0 51074043 2228224 310 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134532333 0 0 4096 0 0 0 0 17 1 0 0
/proc/8014/statm: 544 310 95 220 0 321 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 2176

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

[startup+0.820857 s]
/proc/loadavg: 0.99 0.97 0.99 3/67 8014
/proc/meminfo: memFree=1833152/2055892 swapFree=4086192/4096564
[pid=8014] ppid=8012 vsize=2176 CPUtime=0.81
/proc/8014/stat : 8014 (sat7_bin) R 8012 8014 7192 0 -1 4194304 339 0 0 0 81 0 0 0 25 0 1 0 51074043 2228224 323 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134525321 0 0 4096 0 0 0 0 17 1 0 0
/proc/8014/statm: 544 323 95 220 0 321 0
Current children cumulated CPU time (s) 0.81
Current children cumulated vsize (KiB) 2176

[startup+1.23291 s]
/proc/loadavg: 0.99 0.97 0.99 2/68 8015
/proc/meminfo: memFree=1832120/2055892 swapFree=4086192/4096564
[pid=8014] ppid=8012 vsize=2176 CPUtime=1.22
/proc/8014/stat : 8014 (sat7_bin) R 8012 8014 7192 0 -1 4194304 355 0 0 0 122 0 0 0 25 0 1 0 51074043 2228224 339 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134536040 0 0 4096 0 0 0 0 17 0 0 0
/proc/8014/statm: 544 339 95 220 0 321 0
Current children cumulated CPU time (s) 1.22
Current children cumulated vsize (KiB) 2176

Child status: 20
Real time (s): 1.29637
CPU time (s): 1.2878
CPU user time (s): 1.2868
CPU system time (s): 0.000999
CPU usage (%): 99.3391
Max. virtual memory (cumulated for all children) (KiB): 2176

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.2868
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= 355
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= 17

runsolver used 0.002999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node77 on Tue Feb 27 07:41:05 UTC 2007

IDJOB= 310817
IDBENCH= 20297
IDSOLVER= 101
FILE ID= node77/310817-1172562065

PBS_JOBID= 3971876

Free space on /tmp= 66649 MiB

SOLVER NAME= SAT7 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/310817-1172562065/sat7_bin /tmp/evaluation/310817-1172562065/instance-310817-1172562065.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node77/watcher-310817-1172562065 -o ROOT/results/node77/solver-310817-1172562065 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310817-1172562065/sat7_bin /tmp/evaluation/310817-1172562065/instance-310817-1172562065.cnf            

META MD5SUM SOLVER= 499b432f7af158d8586c91b2e490220f
MD5SUM BENCH=  76f071535d514b4b4cd5d986eb064c1d

RANDOM SEED= 187629193

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node77.alineos.net 2.6.9-34.ELsmp #1 SMP Thu Mar 9 06:23:23 GMT 2006 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		: 3000.239
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	: 6006.15
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		: 3000.239
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	: 5999.41
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055892 kB
MemFree:       1833560 kB
Buffers:         28512 kB
Cached:         148924 kB
SwapCached:       4056 kB
Active:          82500 kB
Inactive:       105112 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055892 kB
LowFree:       1833560 kB
SwapTotal:     4096564 kB
SwapFree:      4086192 kB
Dirty:            1356 kB
Writeback:           0 kB
Mapped:          15356 kB
Slab:            21232 kB
Committed_AS:   116372 kB
PageTables:       1428 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66649 MiB

End job on node77 on Tue Feb 27 07:41:06 UTC 2007