Trace number 2656096

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 NameAnswerobjective functionCPU timeWall clock time
wbo 1.4bOPT34 0.173973 0.174136

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/mps-v2-20-10/
MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
MD5SUM5c5bb330d1cbd0e2ab066594a5d2a4de
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark34
Best CPU time to get the best result obtained on this benchmark0.089986
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 34
Optimality of the best value was proved YES
Number of variables27
Total number of constraints20
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints20
Minimum length of a constraint18
Maximum length of a constraint26
Number of terms in the objective function 27
Biggest coefficient in the objective function 9
Number of bits for the biggest coefficient in the objective function 4
Sum of the numbers in the objective function 124
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 65
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 182
Number of bits of the biggest sum of numbers8
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data 

0.00/0.00	c wbo 1.4 beta - 20100517
0.00/0.00	c Parsing opb file format. File HOME/instance-2656096-1276355072.opb.
0.00/0.00	c Instance file HOME/instance-2656096-1276355072.opb
0.00/0.00	c File size is 3739 bytes.
0.00/0.00	c Highest Coefficient sum: 182
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.00	c |  Parsing time:          0.00         s                                      |
0.00/0.00	c |  Number Variables:      27                                                  |
0.00/0.00	c |  Number Clauses:        0                                                   |
0.00/0.00	c |  Number Cardinality:    0                                                   |
0.00/0.00	c |  Number PB Constraints: 20                                                  |
0.00/0.00	c ============================[ Search Statistics ]==============================
0.00/0.00	c | Conflicts |          ORIGINAL         |          LEARNT          | Progress |
0.00/0.00	c |           |    Vars     Ctrs     Lits |    Limit  Clauses Lit/Cl |          |
0.00/0.00	c ===============================================================================
0.00/0.00	c |         0 |      27       20      478 |     5000        0    nan |  0.000 % |
0.00/0.00	c |       100 |      27       20      478 |     5500      100     14 |  0.142 % |
0.00/0.01	c |       251 |      27       20      478 |     6050      251     12 |  0.142 % |
0.00/0.01	c |       476 |      27       20      478 |     6655      476     11 |  0.142 % |
0.00/0.02	c ===============================================================================
0.00/0.02	c New solution: 57
0.00/0.02	o 57
0.00/0.02	c Elapsed CPU time: 0.021996 s	Remaining CPU time: 179.978 s
0.00/0.02	c ===============================================================================
0.00/0.02	c |       545 |      27       21      505 |     5000      545     11 |  0.142 % |
0.00/0.02	c |       647 |      27       21      505 |     5500      647     11 |  0.142 % |
0.00/0.02	c ===============================================================================
0.00/0.02	c New solution: 56
0.00/0.02	o 56
0.00/0.02	c Elapsed CPU time: 0.025996 s	Remaining CPU time: 179.974 s
0.00/0.02	c ===============================================================================
0.00/0.02	c |       678 |      27       22      532 |     5000      678     11 |  0.142 % |
0.00/0.03	c |       778 |      27       22      532 |     5500      778     12 |  0.142 % |
0.00/0.03	c ===============================================================================
0.00/0.03	c New solution: 41
0.00/0.03	o 41
0.00/0.03	c Elapsed CPU time: 0.031995 s	Remaining CPU time: 179.968 s
0.00/0.03	c ===============================================================================
0.00/0.03	c |       787 |      27       23      559 |     5000      787     12 |  0.142 % |
0.00/0.03	c |       887 |      27       23      559 |     5500      887     12 |  0.142 % |
0.00/0.04	c ===============================================================================
0.00/0.04	c New solution: 39
0.00/0.04	o 39
0.00/0.04	c Elapsed CPU time: 0.041993 s	Remaining CPU time: 179.958 s
0.00/0.04	c ===============================================================================
0.00/0.04	c |      1016 |      27       24      586 |     5000     1016     12 |  0.142 % |
0.00/0.04	c |      1117 |      27       24      586 |     5500     1117     12 |  0.142 % |
0.00/0.05	c |      1267 |      27       24      586 |     6050     1267     12 |  0.143 % |
0.00/0.06	c |      1493 |      27       24      586 |     6655     1493     12 |  0.143 % |
0.00/0.08	c |      1830 |      27       24      586 |     7320     1830     12 |  0.143 % |
0.08/0.09	c ===============================================================================
0.08/0.09	c New solution: 37
0.08/0.09	o 37
0.08/0.09	c Elapsed CPU time: 0.088986 s	Remaining CPU time: 179.911 s
0.08/0.09	c ===============================================================================
0.08/0.09	c |      1982 |      27       25      613 |     5000     1982     12 |  0.143 % |
0.08/0.09	c ===============================================================================
0.08/0.09	c New solution: 35
0.08/0.09	o 35
0.08/0.09	c Elapsed CPU time: 0.090986 s	Remaining CPU time: 179.909 s
0.08/0.09	c ===============================================================================
0.08/0.09	c |      2017 |      27       26      640 |     5000     2017     12 |  0.143 % |
0.08/0.10	c |      2119 |      27       26      640 |     5500     2119     12 |  0.142 % |
0.09/0.10	c ===============================================================================
0.09/0.10	c New solution: 34
0.09/0.10	o 34
0.09/0.10	c Elapsed CPU time: 0.098984 s	Remaining CPU time: 179.901 s
0.09/0.10	c ===============================================================================
0.09/0.10	c |      2139 |      27       27      667 |     5000     2139     12 |  0.142 % |
0.09/0.11	c |      2241 |      27       27      667 |     5500     2241     12 |  0.142 % |
0.09/0.12	c |      2392 |      27       27      667 |     6050     2392     12 |  0.148 % |
0.09/0.13	c |      2617 |      27       27      667 |     6655     2617     12 |  0.280 % |
0.09/0.16	c |      2954 |      26       27      667 |     7320      687     11 |  3.847 % |
0.09/0.17	c ===============================================================================
0.09/0.17	c Best Solution: 34
0.09/0.17	s OPTIMUM FOUND
0.09/0.17	c Total CPU time: 0.167974 s
0.09/0.17	v -x1 -x2 x3 -x4 x5 -x6 -x7 -x8 x9 -x10 -x11 -x12 -x13 -x14 x15 -x16 x17 -x18 -x19 x20 -x21 x22 -x23 -x24 -x25 -x26 x27

Verifier Data 

OK	34

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2656096-1276355072/watcher-2656096-1276355072 -o /tmp/evaluation-result-2656096-1276355072/solver-2656096-1276355072 -C 1800 -W 2000 -M 1800 wbo1.4b -file-format=opb -time-limit=1800 HOME/instance-2656096-1276355072.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: 0.92 1.05 1.05 3/106 12491
/proc/meminfo: memFree=1842388/2059040 swapFree=4158992/4192956
[pid=12491] ppid=12489 vsize=2440 CPUtime=0
/proc/12491/stat : 12491 (wbo1.4b) R 12489 12491 11757 0 -1 4202496 272 0 0 0 0 0 0 0 21 0 1 0 11110841 2498560 189 1992294400 134512640 135751879 4287095568 18446744073709551615 135270609 0 0 4096 3 0 0 0 17 1 0 0 0
/proc/12491/statm: 610 189 147 303 0 305 0

[startup+0.0929771 s]
/proc/loadavg: 0.92 1.05 1.05 3/106 12491
/proc/meminfo: memFree=1842388/2059040 swapFree=4158992/4192956
[pid=12491] ppid=12489 vsize=2836 CPUtime=0.08
/proc/12491/stat : 12491 (wbo1.4b) R 12489 12491 11757 0 -1 4202496 343 0 0 0 8 0 0 0 21 0 1 0 11110841 2904064 260 1992294400 134512640 135751879 4287095568 18446744073709551615 135270609 0 0 4096 3 0 0 0 17 1 0 0 0
/proc/12491/statm: 709 260 147 303 0 404 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 2836

[startup+0.101978 s]
/proc/loadavg: 0.92 1.05 1.05 3/106 12491
/proc/meminfo: memFree=1842388/2059040 swapFree=4158992/4192956
[pid=12491] ppid=12489 vsize=2836 CPUtime=0.09
/proc/12491/stat : 12491 (wbo1.4b) R 12489 12491 11757 0 -1 4202496 349 0 0 0 9 0 0 0 21 0 1 0 11110841 2904064 266 1992294400 134512640 135751879 4287095568 18446744073709551615 135270609 0 0 4096 3 0 0 0 17 1 0 0 0
/proc/12491/statm: 709 266 147 303 0 404 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2836

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

Child status: 0
Real time (s): 0.174136
CPU time (s): 0.173973
CPU user time (s): 0.167974
CPU system time (s): 0.005999
CPU usage (%): 99.9064
Max. virtual memory (cumulated for all children) (KiB): 2836

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.167974
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= 389
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= 3
involuntary context switches= 1

runsolver used 0.003999 second user time and 0.011998 second system time

The end

Launcher Data 

Begin job on node006 at 2010-06-12 17:04:32
IDJOB=2656096
IDBENCH=1860
IDSOLVER=1161
FILE ID=node006/2656096-1276355072
PBS_JOBID= 11173195
Free space on /tmp= 62472 MiB

SOLVER NAME= wbo 1.4b
BENCH NAME= PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
COMMAND LINE= wbo1.4b -file-format=opb -time-limit=TIMEOUT BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2656096-1276355072/watcher-2656096-1276355072 -o /tmp/evaluation-result-2656096-1276355072/solver-2656096-1276355072 -C 1800 -W 2000 -M 1800  wbo1.4b -file-format=opb -time-limit=1800 HOME/instance-2656096-1276355072.opb

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

MD5SUM BENCH= 5c5bb330d1cbd0e2ab066594a5d2a4de
RANDOM SEED=93828816

node006.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		: 3000.204
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	: 6000.40
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		: 3000.204
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	: 5599.45
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1842792 kB
Buffers:         20528 kB
Cached:         102784 kB
SwapCached:       1976 kB
Active:          92492 kB
Inactive:        58740 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1842792 kB
SwapTotal:     4192956 kB
SwapFree:      4158992 kB
Dirty:            2980 kB
Writeback:           8 kB
AnonPages:       25968 kB
Mapped:          14012 kB
Slab:            43208 kB
PageTables:       4000 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   181708 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    264948 kB
VmallocChunk: 34359471699 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 62472 MiB
End job on node006 at 2010-06-12 17:04:32