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-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-noswot.opb
MD5SUM7e99578ddcc33d345a5429ff14167339
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -41
Optimality of the best value was proved YES
Number of terms in the objective function 425
Biggest coefficient in the objective function 65536
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 3276775
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 113777046323200
Number of bits of the biggest number in a constraint 47
Biggest sum of numbers in a constraint 235765682083953
Number of bits of the biggest sum of numbers48
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark206.701
Number of variables1060
Total number of constraints282
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)75
Number of constraints which are nor clauses,nor cardinality constraints207
Minimum length of a constraint1
Maximum length of a constraint425

Trace number 10362

Launcher Data

LAUNCH ON wulflinc14 THE 2005-09-23 17:55:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9115 boxname=wulflinc14 idbench=911 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  7e99578ddcc33d345a5429ff14167339  /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-13-7-noswot.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-13-7-noswot.opb
IDLAUNCH: 9115
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.058
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	: 2
cpu MHz		: 451.058
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:        982916 kB
Buffers:          2600 kB
Cached:          32148 kB
SwapCached:          0 kB
Active:          17040 kB
Inactive:        20628 kB
HighTotal:      131008 kB
HighFree:        94612 kB
LowTotal:       903652 kB
LowFree:        888304 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8532 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:56:49 (client local time) WITH STATUS 0 IN 97.6332 SECONDS
stats: 9115 7 97.6332 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/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22148597 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9513/statm): 373 2 364 364 0 9 0
[pid=9513] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-13-7-noswot.opb

[startup+10.0015 s]
Raw data (loadavg): 0.92 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 31510 0 0 0 925 71 0 0 25 0 1 0 22148597 99139584 20355 4294967295 134512640 135987407 3221224560 3221208220 134636950 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9513/statm): 24204 20355 364 364 0 23840 0
[pid=9513] vsize: 96816
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 96816

[startup+20.0022 s]
Raw data (loadavg): 0.93 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 57821 0 0 0 1869 127 0 0 25 0 1 0 22148597 179744768 35450 4294967295 134512640 135987407 3221224560 3221204608 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9513/statm): 43883 35450 364 364 0 43519 0
[pid=9513] vsize: 175532
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 175532

[startup+30.0029 s]
Raw data (loadavg): 0.94 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 96042 0 0 0 2792 201 0 0 25 0 1 0 22148597 296849408 51471 4294967295 134512640 135987407 3221224560 3221210572 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9513/statm): 72473 51471 364 364 0 72109 0
[pid=9513] vsize: 289892
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 289892

[startup+40.0025 s]
Raw data (loadavg): 0.95 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 109335 0 0 0 3766 228 0 0 25 0 1 0 22148597 335978496 64531 4294967295 134512640 135987407 3221224560 3221204860 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9513/statm): 82026 64532 364 364 0 81662 0
[pid=9513] vsize: 328104
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 328104

[startup+50.0032 s]
Raw data (loadavg): 0.96 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 149520 0 0 0 4687 302 0 0 25 0 1 0 22148597 530288640 103512 4294967295 134512640 135987407 3221224560 3221202464 134861437 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9513/statm): 129465 103512 364 364 0 129101 0
[pid=9513] vsize: 517860
Current children cumulated CPU time (s) 49.89
Current children cumulated vsize (Kb) 517860

[startup+60.0039 s]
Raw data (loadavg): 0.96 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 184929 0 0 0 5607 382 0 0 25 0 1 0 22148597 564547584 95721 4294967295 134512640 135987407 3221224560 3221206912 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9513/statm): 137829 95721 364 364 0 137465 0
[pid=9513] vsize: 551316
Current children cumulated CPU time (s) 59.89
Current children cumulated vsize (Kb) 551316

[startup+70.0046 s]
Raw data (loadavg): 0.97 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 197908 0 0 0 6580 408 0 0 25 0 1 0 22148597 606302208 108483 4294967295 134512640 135987407 3221224560 3221210572 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9513/statm): 148023 108483 364 364 0 147659 0
[pid=9513] vsize: 592092
Current children cumulated CPU time (s) 69.88
Current children cumulated vsize (Kb) 592092

[startup+80.0052 s]
Raw data (loadavg): 0.97 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 211612 0 0 0 7551 436 0 0 25 0 1 0 22148597 612200448 121945 4294967295 134512640 135987407 3221224560 3221209904 134639049 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9513/statm): 149463 121945 364 364 0 149099 0
[pid=9513] vsize: 597852
Current children cumulated CPU time (s) 79.87
Current children cumulated vsize (Kb) 597852

[startup+90.0049 s]
Raw data (loadavg): 0.98 0.95 0.94 2/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) R 9512 9513 4060 0 -1 0 225615 0 0 0 8521 467 0 0 25 0 1 0 22148597 617689088 135697 4294967295 134512640 135987407 3221224560 3221204236 134639152 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9513/statm): 150803 135697 364 364 0 150439 0
[pid=9513] vsize: 603212
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 603212



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+97.4605 s]
Raw data (loadavg): 0.98 0.96 0.94 1/55 9513
Raw data (/proc/9513/stat): 9513 (pb2sat) T 9512 9513 4060 0 -1 0 255271 0 0 0 9206 523 0 0 25 0 1 0 22148597 943841280 164489 4294967295 134512640 135987407 3221224560 3221205820 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9513/statm): 230430 164489 364 364 0 230066 0
[pid=9513] vsize: 921720
Current children cumulated CPU time (s) 97.29
Current children cumulated vsize (Kb) 921720

Sending SIGTERM to -9513
Sleeping 2 seconds
Sending SIGKILL to -9513
One traced child (pid=9513) 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): 99.7994
CPU time (s): 97.6332
CPU user time (s): 92.067
CPU system time (s): 5.56615
CPU usage (%): 97.8294
Max. virtual memory (cumulated for all children) (Kb): 921720

Verifier Data

ERROR: no interpretation found !