Trace number 36644

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:
    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.
    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.
    When a conversion script is used, this section shows the messages that were output by the conversion script.
    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.
    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
Pueblo 1.4OPT16 0.6479 0.653518

General information on the benchmark

Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark16
Best CPU time to get the best result obtained on this benchmark0.308952
Has Objective FunctionYES
(Un)Satisfiability was provedYES
Best value of the objective function 16
Optimality of the best value was proved YES
Number of variables3312
Total number of constraints8904
Number of constraints which are clauses6510
Number of constraints which are cardinality constraints (but not clauses)2394
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint80
Number of terms in the objective function 80
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 80
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 78
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 158
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 (download as text)

0.00	c Pueblo version 1.4 (September 2005)
0.00	c Developed @ University of Michigan, Ann Arbor, MI
0.00	c  by Hossein Sheini
0.17	c starting to Solve
0.17	c #variables read: 3312 - #constraints read: 7546
0.17	o 20
0.17	o 19
0.19	o 18
0.19	o 17
0.19	o 16
0.65	c optimum objective found = 16
0.65	c total time              : 0.63 s
0.65	v -x3161 -x3162 -x3173 -x3184 -x3195 -x3206 -x3217 -x3228 -x3239 -x3240 -x3163 -x3164 -x3165 -x3166 -x3167 x3168 -x3169
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Verifier Data (download as text)

OK	16

Watcher Data (download as text)

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1830 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
runsolver version 3.0.0 (c)

command line: runsolver --timestamp -w ROOT/results/node15/watcher-36644-1149366018 -o ROOT/results/node15/solver-36644-1149366018 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user8/Pueblo ROOT/tmp/node15/36644-1149366018/instance-36644-1149366018.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.77 0.92 0.96 2/64 10615
/proc/meminfo: memFree=1834264/2055920 swapFree=4181408/4192956
[pid=10615] ppid=10613 vsize=2328 CPUtime=0
/proc/10615/stat : 10615 (Pueblo) R 10613 10615 10569 0 -1 4194304 133 0 0 0 0 0 0 0 19 0 1 0 202264556 2383872 116 18446744073709551615 134512640 134579096 4294956688 18446744073709551615 7516248 0 0 4096 0 0 0 0 17 1 0 0
/proc/10615/statm: 582 120 105 16 0 11 0

Child status: 30
Real time (s): 0.653518
CPU time (s): 0.6479
CPU user time (s): 0.639902
CPU system time (s): 0.007998
CPU usage (%): 99.1404
Max. virtual memory (cumulated for all children) (Kb): 0

Launcher Data (download as text)

Begin job on node15 on Sat Jun  3 20:20:18 UTC 2006

FILE ID= 36644-1149366018

PBS_JOBID= 311833

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/
COMMAND LINE= ROOT/solvers/PB/PB06final/user8/Pueblo ROOT/tmp/node15/36644-1149366018/instance-36644-1149366018.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node15/watcher-36644-1149366018 -o ROOT/results/node15/solver-36644-1149366018 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user8/Pueblo ROOT/tmp/node15/36644-1149366018/instance-36644-1149366018.opb

MD5SUM SOLVER= 80c24de60e85bc4a9ec18ca4764e7dff
MD5SUM BENCH=  9a7f60a2a464fa73b28ba87d2394e33f

RANDOM SEED= 334819459

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.285
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		: 3000.285
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:

MemTotal:      2055920 kB
MemFree:       1834536 kB
Buffers:         25048 kB
Cached:         124708 kB
SwapCached:       3176 kB
Active:          26684 kB
Inactive:       131672 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1834536 kB
SwapTotal:     4192956 kB
SwapFree:      4181408 kB
Dirty:             272 kB
Writeback:           0 kB
Mapped:          14692 kB
Slab:            48992 kB
Committed_AS:   365728 kB
PageTables:       1488 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

End job on node15 on Sat Jun  3 20:20:18 UTC 2006