Trace number 2696122

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
pb_cplex 2010-06-29UNSAT 0.206968 0.193005

General information on the benchmark

Namenormalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/namasivayam/
wnqueen/normalized-t2001.13queen13.1111224255.opb
MD5SUM907b081b964ca265d29825e5079e97bd
Bench CategoryDEC-SMALLINT (no optimisation, small integers)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark0.206968
Has Objective FunctionNO
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables169
Total number of constraints101
Number of constraints which are clauses30
Number of constraints which are cardinality constraints (but not clauses)70
Number of constraints which are nor clauses,nor cardinality constraints1
Minimum length of a constraint2
Maximum length of a constraint169
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 38
Number of bits of the biggest number in a constraint 6
Biggest sum of numbers in a constraint 1217
Number of bits of the biggest sum of numbers11
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data 

0.00/0.00	c pb_cplex 1.0 - 20100701
0.00/0.00	c Parsing opb file format. File HOME/instance-2696122-1278015145.opb.
0.00/0.00	c Instance file HOME/instance-2696122-1278015145.opb
0.00/0.00	c File size is 9906 bytes.
0.00/0.01	c Highest Coefficient sum: 1217
0.00/0.01	c  IBM ILOG License Manager: "IBM ILOG Optimization Suite for Academic Initiative" is accessing CPLEX 12 with option(s): "e m b q ".
0.00/0.03	c ============================[ Problem Statistics ]=============================
0.00/0.03	c |                                                                             |
0.00/0.03	c |  Parsing time:          0.01         s                                      |
0.00/0.03	c |  Number Variables:      169                                                 |
0.00/0.03	c |  Number Constraints:    101                                                 |
0.00/0.03	c ===============================================================================
0.00/0.19	c Remaining time 1799.99 sec.
0.00/0.19	s UNSATISFIABLE
0.00/0.19	c Total CPU time              : 0.19297 s

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2696122-1278015145/watcher-2696122-1278015145 -o /tmp/evaluation-result-2696122-1278015145/solver-2696122-1278015145 -C 1800 -W 2000 -M 1800 run HOME/instance-2696122-1278015145.opb 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.00 0.00 0.00 3/106 32272
/proc/meminfo: memFree=1413368/2059040 swapFree=4139368/4192956
[pid=32272] ppid=32270 vsize=8700 CPUtime=0
/proc/32272/stat : 32272 (run) S 32270 32272 32219 0 -1 4202496 365 0 0 0 0 0 0 0 19 0 1 0 142809043 8908800 249 1992294400 4194304 4922060 140736148833552 18446744073709551615 215210368133 0 65536 4100 65538 18446744071562232103 0 0 17 1 0 0 0
/proc/32272/statm: 2175 249 208 178 0 68 0

[startup+0.0769561 s]
/proc/loadavg: 0.00 0.00 0.00 3/106 32272
/proc/meminfo: memFree=1413368/2059040 swapFree=4139368/4192956
[pid=32272] ppid=32270 vsize=8700 CPUtime=0
/proc/32272/stat : 32272 (run) S 32270 32272 32219 0 -1 4202496 365 0 0 0 0 0 0 0 19 0 1 0 142809043 8908800 249 1992294400 4194304 4922060 140736148833552 18446744073709551615 215210368133 0 65536 4100 65538 18446744071562232103 0 0 17 1 0 0 0
/proc/32272/statm: 2175 249 208 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.100955 s]
/proc/loadavg: 0.00 0.00 0.00 3/106 32272
/proc/meminfo: memFree=1413368/2059040 swapFree=4139368/4192956
[pid=32272] ppid=32270 vsize=8700 CPUtime=0
/proc/32272/stat : 32272 (run) S 32270 32272 32219 0 -1 4202496 365 0 0 0 0 0 0 0 19 0 1 0 142809043 8908800 249 1992294400 4194304 4922060 140736148833552 18446744073709551615 215210368133 0 65536 4100 65538 18446744071562232103 0 0 17 1 0 0 0
/proc/32272/statm: 2175 249 208 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

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

Child status: 0
Real time (s): 0.193005
CPU time (s): 0.206968
CPU user time (s): 0.19397
CPU system time (s): 0.012998
CPU usage (%): 107.235
Max. virtual memory (cumulated for all children) (KiB): 8700

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.19397
system time used= 0.012998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2237
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= 157
involuntary context switches= 13

runsolver used 0.001999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node031 at 2010-07-01 22:12:25
IDJOB=2696122
IDBENCH=1202
IDSOLVER=1209
FILE ID=node031/2696122-1278015145
PBS_JOBID= 11198731
Free space on /tmp= 62392 MiB

SOLVER NAME= pb_cplex 2010-06-29
BENCH NAME= PB06//final/normalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/namasivayam/wnqueen/normalized-t2001.13queen13.1111224255.opb
COMMAND LINE= run BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2696122-1278015145/watcher-2696122-1278015145 -o /tmp/evaluation-result-2696122-1278015145/solver-2696122-1278015145 -C 1800 -W 2000 -M 1800  run HOME/instance-2696122-1278015145.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 907b081b964ca265d29825e5079e97bd
RANDOM SEED=1709100882

node031.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/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		: 3000.219
cache size	: 2048 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 6000.43
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		: 3000.219
cache size	: 2048 KB
physical id	: 3
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 6
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5599.53
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1413896 kB
Buffers:        147524 kB
Cached:         388404 kB
SwapCached:       6400 kB
Active:         207200 kB
Inactive:       342064 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1413896 kB
SwapTotal:     4192956 kB
SwapFree:      4139368 kB
Dirty:           16640 kB
Writeback:           0 kB
AnonPages:       11760 kB
Mapped:          11892 kB
Slab:            73840 kB
PageTables:       4192 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   181184 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    264964 kB
VmallocChunk: 34359471699 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 62376 MiB
End job on node031 at 2010-07-01 22:12:26