Trace number 427034

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 1.46478 0.767692

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 benchmark0.404937
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)

0.00/0.00	c Starting MiraXTv3...
1.35/0.76	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/node34/watcher-427034-1179025762 -o ROOT/results/node34/solver-427034-1179025762 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/427034-1179025762/MiraXTv3_dyn /tmp/evaluation/427034-1179025762/instance-427034-1179025762.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: 1.71 1.91 1.97 3/77 16106
/proc/meminfo: memFree=1268536/2055920 swapFree=4159088/4192956
[pid=16106] ppid=16104 vsize=3920 CPUtime=0
/proc/16106/stat : 16106 (MiraXTv3_dyn) R 16104 16106 24124 0 -1 4194304 325 0 0 0 0 0 0 0 18 0 1 0 350491609 4014080 300 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 8160205 0 0 4096 0 0 0 0 17 1 0 0
/proc/16106/statm: 980 306 206 20 0 338 0

[startup+0.097362 s]
/proc/loadavg: 1.71 1.91 1.97 3/77 16106
/proc/meminfo: memFree=1268536/2055920 swapFree=4159088/4192956
[pid=16106] ppid=16104 vsize=6992 CPUtime=0.16
/proc/16106/stat : 16106 (MiraXTv3_dyn) S 16104 16106 24124 0 -1 4194304 732 0 0 0 16 0 0 0 18 0 3 0 350491609 7159808 707 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 4294960144 0 0 4096 0 18446744073709551615 0 0 17 1 0 0
/proc/16106/statm: 1748 707 218 20 0 1106 0
Current children cumulated CPU time (s) 0.16
Current children cumulated vsize (KiB) 6992

[startup+0.10136 s]
/proc/loadavg: 1.71 1.91 1.97 3/77 16106
/proc/meminfo: memFree=1268536/2055920 swapFree=4159088/4192956
[pid=16106] ppid=16104 vsize=6992 CPUtime=0.17
/proc/16106/stat : 16106 (MiraXTv3_dyn) S 16104 16106 24124 0 -1 4194304 737 0 0 0 17 0 0 0 18 0 3 0 350491609 7159808 712 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 4294960144 0 0 4096 0 18446744073709551615 0 0 17 1 0 0
/proc/16106/statm: 1748 712 218 20 0 1106 0
Current children cumulated CPU time (s) 0.17
Current children cumulated vsize (KiB) 6992

[startup+0.301379 s]
/proc/loadavg: 1.71 1.91 1.97 3/77 16106
/proc/meminfo: memFree=1268536/2055920 swapFree=4159088/4192956
[pid=16106] ppid=16104 vsize=8324 CPUtime=0.57
/proc/16106/stat : 16106 (MiraXTv3_dyn) S 16104 16106 24124 0 -1 4194304 996 0 0 0 57 0 0 0 18 0 3 0 350491609 8523776 971 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 4294960144 0 0 4096 0 18446744073709551615 0 0 17 1 0 0
/proc/16106/statm: 2081 971 218 20 0 1439 0
Current children cumulated CPU time (s) 0.57
Current children cumulated vsize (KiB) 8324

[startup+0.70141 s]
/proc/loadavg: 1.71 1.91 1.97 3/77 16106
/proc/meminfo: memFree=1268536/2055920 swapFree=4159088/4192956
[pid=16106] ppid=16104 vsize=10160 CPUtime=1.35
/proc/16106/stat : 16106 (MiraXTv3_dyn) S 16104 16106 24124 0 -1 4194304 1434 0 0 0 135 0 0 0 18 0 3 0 350491609 10403840 1409 18446744073709551615 134512640 134597700 4294956672 18446744073709551615 4294960144 0 0 4096 0 18446744073709551615 0 0 17 1 0 0
/proc/16106/statm: 2540 1409 218 20 0 1898 0
Current children cumulated CPU time (s) 1.35
Current children cumulated vsize (KiB) 10160

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

Child status: 20
Real time (s): 0.767692
CPU time (s): 1.46478
CPU user time (s): 1.45878
CPU system time (s): 0.005999
CPU usage (%): 190.803
Max. virtual memory (cumulated for all children) (KiB): 10160

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.45878
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= 1521
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= 39
involuntary context switches= 27

runsolver used 0.000999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node34 on Sun May 13 03:09:22 UTC 2007

IDJOB= 427034
IDBENCH= 20297
IDSOLVER= 196
FILE ID= node34/427034-1179025762

PBS_JOBID= 5253258

Free space on /tmp= 66546 MiB

SOLVER NAME= MiraXT v3
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/427034-1179025762/MiraXTv3_dyn /tmp/evaluation/427034-1179025762/instance-427034-1179025762.cnf
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node34/watcher-427034-1179025762 -o ROOT/results/node34/solver-427034-1179025762 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/427034-1179025762/MiraXTv3_dyn /tmp/evaluation/427034-1179025762/instance-427034-1179025762.cnf

META MD5SUM SOLVER= 2ad149617ed8d249d89b067eb44c33da
MD5SUM BENCH=  76f071535d514b4b4cd5d986eb064c1d

RANDOM SEED= 579004309

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node34.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		: 3000.236
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		: 3000.236
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:       1268816 kB
Buffers:         51476 kB
Cached:         591012 kB
SwapCached:       3240 kB
Active:         443988 kB
Inactive:       222124 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1268816 kB
SwapTotal:     4192956 kB
SwapFree:      4159088 kB
Dirty:            4036 kB
Writeback:           0 kB
Mapped:          30568 kB
Slab:           106244 kB
Committed_AS:  5406052 kB
PageTables:       2008 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 node34 on Sun May 13 03:09:23 UTC 2007