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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/MIPLIB/miplib2003/normalized-mps-v2-20-10-momentum2.opb
MD5SUM46da43c96f006f296bc8287cf17c977a
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 24130
Biggest coefficient in the objective function 655360000
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 3638660312
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint 1024000000000000013606456393728
Number of bits of the biggest number in a constraint 100
Biggest sum of numbers in a constraint 3743132712137090149495810818048
Number of bits of the biggest sum of numbers102
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark137.696
Number of variables25930
Total number of constraints27909
Number of constraints which are clauses10362
Number of constraints which are cardinality constraints (but not clauses)1921
Number of constraints which are nor clauses,nor cardinality constraints15626
Minimum length of a constraint1
Maximum length of a constraint913

Trace number 10035

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-23 16:37:51 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8784 boxname=wulflinc23 idbench=580 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  46da43c96f006f296bc8287cf17c977a  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-momentum2.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-momentum2.opb
IDLAUNCH: 8784
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.185
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.185
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        834284 kB
Buffers:         14408 kB
Cached:         166948 kB
SwapCached:          0 kB
Active:         134480 kB
Inactive:        49796 kB
HighTotal:      131008 kB
HighFree:         3752 kB
LowTotal:       903652 kB
LowFree:        830532 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:               8 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10456 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:39:31 (client local time) WITH STATUS 0 IN 96.3124 SECONDS
stats: 8784 7 96.3124 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21681644 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 373 2 364 364 0 9 0
[pid=8624] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-momentum2.opb

[startup+10.0018 s]
Raw data (loadavg): 0.95 0.94 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 3387 0 0 0 991 7 0 0 25 0 1 0 21681644 11878400 2541 4294967295 134512640 135987407 3221224560 3221221952 134615172 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 2900 2541 364 364 0 2536 0
[pid=8624] vsize: 11600
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 11600

[startup+20.0024 s]
Raw data (loadavg): 0.96 0.94 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 26990 0 0 0 1939 57 0 0 25 0 1 0 21681644 84508672 15720 4294967295 134512640 135987407 3221224560 3221208496 134878060 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8624/statm): 20632 15720 364 364 0 20268 0
[pid=8624] vsize: 82528
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 82528

[startup+30.002 s]
Raw data (loadavg): 0.96 0.94 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 53425 0 0 0 2874 121 0 0 25 0 1 0 21681644 160841728 30896 4294967295 134512640 135987407 3221224560 3221209168 134878060 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 39268 30896 364 364 0 38904 0
[pid=8624] vsize: 157072
Current children cumulated CPU time (s) 29.95
Current children cumulated vsize (Kb) 157072

[startup+40.0027 s]
Raw data (loadavg): 0.97 0.94 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 92345 0 0 0 3787 206 0 0 25 0 1 0 21681644 274731008 47572 4294967295 134512640 135987407 3221224560 3221208112 134856702 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 67073 47572 364 364 0 66709 0
[pid=8624] vsize: 268292
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 268292

[startup+50.0033 s]
Raw data (loadavg): 0.97 0.94 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 106854 0 0 0 4753 239 0 0 25 0 1 0 21681644 314695680 61804 4294967295 134512640 135987407 3221224560 3221208892 134637015 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 76830 61804 364 364 0 76466 0
[pid=8624] vsize: 307320
Current children cumulated CPU time (s) 49.92
Current children cumulated vsize (Kb) 307320

[startup+60.003 s]
Raw data (loadavg): 0.98 0.94 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 147134 0 0 0 5671 321 0 0 25 0 1 0 21681644 437329920 82429 4294967295 134512640 135987407 3221224560 3221208096 134866032 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 106770 82429 364 364 0 106406 0
[pid=8624] vsize: 427080
Current children cumulated CPU time (s) 59.92
Current children cumulated vsize (Kb) 427080

[startup+70.0346 s]
Raw data (loadavg): 0.98 0.95 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 185220 0 0 0 6585 406 0 0 25 0 1 0 21681644 544890880 95685 4294967295 134512640 135987407 3221224560 3221209220 134641750 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 133030 95685 364 364 0 132666 0
[pid=8624] vsize: 532120
Current children cumulated CPU time (s) 69.91
Current children cumulated vsize (Kb) 532120

[startup+80.0352 s]
Raw data (loadavg): 0.98 0.95 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 197955 0 0 0 7552 438 0 0 25 0 1 0 21681644 583831552 108175 4294967295 134512640 135987407 3221224560 3221207940 134639876 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 142537 108175 364 364 0 142173 0
[pid=8624] vsize: 570148
Current children cumulated CPU time (s) 79.9
Current children cumulated vsize (Kb) 570148

[startup+90.0359 s]
Raw data (loadavg): 0.98 0.95 0.92 2/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) R 8623 8624 4060 0 -1 0 213396 0 0 0 8519 472 0 0 25 0 1 0 21681644 590360576 123321 4294967295 134512640 135987407 3221224560 3221209312 134887273 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8624/statm): 144131 123321 364 364 0 143767 0
[pid=8624] vsize: 576524
Current children cumulated CPU time (s) 89.91
Current children cumulated vsize (Kb) 576524



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+96.1243 s]
Raw data (loadavg): 0.99 0.95 0.92 1/55 8624
Raw data (/proc/8624/stat): 8624 (pb2sat) T 8623 8624 4060 0 -1 0 259527 0 0 0 9033 560 0 0 25 0 1 0 21681644 943812608 167926 4294967295 134512640 135987407 3221224560 3221208844 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/8624/statm): 230423 167926 364 364 0 230059 0
[pid=8624] vsize: 921692
Current children cumulated CPU time (s) 95.93
Current children cumulated vsize (Kb) 921692

Sending SIGTERM to -8624
Sleeping 2 seconds
Sending SIGKILL to -8624
One traced child (pid=8624) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 98.4722
CPU time (s): 96.3124
CPU user time (s): 90.3653
CPU system time (s): 5.9471
CPU usage (%): 97.8067
Max. virtual memory (cumulated for all children) (Kb): 921692

Verifier Data

ERROR: no interpretation found !