Trace number 41453

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
PBS 4.1LUNSAT 24.8452 24.8591

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/
MIPLIB/miplib2003/normalized-reduced-mps-v2-20-10-momentum2.opb
MD5SUM321e9d4e6ed80bc00fdeca5e2a9625ff
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 benchmark13.185
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables25930
Total number of constraints22640
Number of constraints which are clauses10362
Number of constraints which are cardinality constraints (but not clauses)103
Number of constraints which are nor clauses,nor cardinality constraints12175
Minimum length of a constraint1
Maximum length of a constraint913
Number of terms in the objective function 24130
Biggest coefficient in the objective function 94430
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 544308
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 371834
Number of bits of the biggest number in a constraint 19
Biggest sum of numbers in a constraint 544308
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 PBS v4 by Bashar Al-Rawi & Fadi Aloul
0.00	c Solving ROOT/tmp/node0/41453-1149355948/instance-41453-1149355948.opb ......
24.84	c done parsing opb.
24.84	s UNSATISFIABLE
24.84	c Total Run Time					0.048993

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/node0/watcher-41453-1149355948 -o ROOT/results/node0/solver-41453-1149355948 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node0/41453-1149355948/instance-41453-1149355948.opb 103922227 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.87 0.95 0.98 2/64 23914
/proc/meminfo: memFree=1466024/2055920 swapFree=4191892/4192956
[pid=23914] ppid=23912 vsize=3832 CPUtime=0
/proc/23914/stat : 23914 (PBS4L) R 23912 23914 23868 0 -1 4194304 182 0 0 0 0 0 0 0 18 0 1 0 201256351 3923968 166 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 134599096 0 0 4096 0 0 0 0 17 1 0 0
/proc/23914/statm: 958 168 90 232 0 723 0

[startup+10.0024 s]
/proc/loadavg: 0.89 0.95 0.98 2/64 23914
/proc/meminfo: memFree=1438256/2055920 swapFree=4191892/4192956
[pid=23914] ppid=23912 vsize=29172 CPUtime=9.99
/proc/23914/stat : 23914 (PBS4L) R 23912 23914 23868 0 -1 4194304 8540 0 0 0 996 3 0 0 25 0 1 0 201256351 29872128 7063 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 134614319 0 0 4096 0 0 0 0 17 1 0 0
/proc/23914/statm: 7293 7063 100 232 0 7058 0
Current children cumulated CPU time (s) 9.99
Current children cumulated vsize (Kb) 29172

[startup+20.0085 s]
/proc/loadavg: 0.91 0.96 0.98 2/64 23914
/proc/meminfo: memFree=1405936/2055920 swapFree=4191892/4192956
[pid=23914] ppid=23912 vsize=63448 CPUtime=19.99
/proc/23914/stat : 23914 (PBS4L) R 23912 23914 23868 0 -1 4194304 16872 0 0 0 1993 6 0 0 25 0 1 0 201256351 64970752 15171 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 134613115 0 0 4096 0 0 0 0 17 1 0 0
/proc/23914/statm: 15862 15171 100 232 0 15627 0
Current children cumulated CPU time (s) 19.99
Current children cumulated vsize (Kb) 63448

Child status: 0
Real time (s): 24.8591
CPU time (s): 24.8452
CPU user time (s): 24.7462
CPU system time (s): 0.098984
CPU usage (%): 99.9442
Max. virtual memory (cumulated for all children) (Kb): 63448

Launcher Data (download as text)

Begin job on node0 on Sat Jun  3 17:32:28 UTC 2006


FILE ID= 41453-1149355948

PBS_JOBID= 311249

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/miplib2003/normalized-reduced-mps-v2-20-10-momentum2.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node0/41453-1149355948/instance-41453-1149355948.opb 103922227
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node0/watcher-41453-1149355948 -o ROOT/results/node0/solver-41453-1149355948 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node0/41453-1149355948/instance-41453-1149355948.opb 103922227

MD5SUM SOLVER= ab46593c31a6a47b9d9920387a00d332
MD5SUM BENCH=  321e9d4e6ed80bc00fdeca5e2a9625ff

RANDOM SEED= 103922227


/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:       1466232 kB
Buffers:         29196 kB
Cached:         493640 kB
SwapCached:        492 kB
Active:         212728 kB
Inactive:       326816 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1466232 kB
SwapTotal:     4192956 kB
SwapFree:      4191892 kB
Dirty:             208 kB
Writeback:           0 kB
Mapped:          25740 kB
Slab:            36116 kB
Committed_AS:   303748 kB
PageTables:       1480 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node0 on Sat Jun  3 17:32:53 UTC 2006