Trace number 40047

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 NameAnswerObjective functionCPU timeWall clock time
bsolo 2006/05UNSAT 2.74158 2.75635

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/
MIPLIB/miplib2003/normalized-reduced-mps-v2-20-10-momentum1.opb
MD5SUMe2a78df60352c05b10262815438dedba
Bench CategoryOPT-SMALLINT (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 benchmark2.74158
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables41495
Total number of constraints40134
Number of constraints which are clauses24365
Number of constraints which are cardinality constraints (but not clauses)651
Number of constraints which are nor clauses,nor cardinality constraints15118
Minimum length of a constraint1
Maximum length of a constraint840
Number of terms in the objective function 31027
Biggest coefficient in the objective function 6260
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 553158
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 371255
Number of bits of the biggest number in a constraint 19
Biggest sum of numbers in a constraint 553158
Number of bits of the biggest sum of numbers20
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data (download as text)

0.00	c Time Limit set via PBTIMEOUT to 1800
0.02	c INFO: OSL Context initialized.
2.67	c Initial problem consists of 41495 variables and 40690 constraints.
2.74	s UNSATISFIABLE
2.74	c Exit Code: 20
2.74	c Total time: 2.727 s

Verifier Data (download as text)

ERROR: no interpretation found !

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) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node31/watcher-40047-1149362011 -o ROOT/results/node31/solver-40047-1149362011 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node31/40047-1149362011/instance-40047-1149362011.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.92 0.98 0.98 2/64 10695
/proc/meminfo: memFree=1776976/2055920 swapFree=4181480/4192956
[pid=10695] ppid=10693 vsize=2900 CPUtime=0
/proc/10695/stat : 10695 (bsolo) R 10693 10695 10649 0 -1 0 43 0 0 0 0 0 0 0 18 0 1 0 201864793 2969600 27 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 1171755 0 0 4096 0 0 0 0 17 1 0 0
/proc/10695/statm: 725 27 19 55 0 38 0

Child status: 20
Real time (s): 2.75635
CPU time (s): 2.74158
CPU user time (s): 2.5986
CPU system time (s): 0.142978
CPU usage (%): 99.4641
Max. virtual memory (cumulated for all children) (Kb): 0

Launcher Data (download as text)

Begin job on node31 on Sat Jun  3 19:13:31 UTC 2006


FILE ID= 40047-1149362011

PBS_JOBID= 311559

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/miplib2003/normalized-reduced-mps-v2-20-10-momentum1.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node31/40047-1149362011/instance-40047-1149362011.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node31/watcher-40047-1149362011 -o ROOT/results/node31/solver-40047-1149362011 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node31/40047-1149362011/instance-40047-1149362011.opb

MD5SUM SOLVER= 05cada221eb1efaaae980ebc7509e7e8
MD5SUM BENCH=  e2a78df60352c05b10262815438dedba

RANDOM SEED= 284444683


/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		: 3000.234
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		: 3000.234
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:       1777120 kB
Buffers:         20396 kB
Cached:         186624 kB
SwapCached:       3304 kB
Active:          48468 kB
Inactive:       167348 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1777120 kB
SwapTotal:     4192956 kB
SwapFree:      4181480 kB
Dirty:             152 kB
Writeback:           0 kB
Mapped:          14964 kB
Slab:            48892 kB
Committed_AS:   391520 kB
PageTables:       1496 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node31 on Sat Jun  3 19:13:34 UTC 2006