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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos13.opb
MD5SUMcf076aa1d04c57dc685f8035f0968734
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -1346964
Optimality of the best value was proved NO
Number of terms in the objective function 120
Biggest coefficient in the objective function 103558656
Number of bits for the biggest coefficient in the objective function 27
Sum of the numbers in the objective function 2282563635
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint 69966336000
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 636991772142
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1300.93
Number of variables1935
Total number of constraints22679
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)1816
Number of constraints which are nor clauses,nor cardinality constraints20863
Minimum length of a constraint1
Maximum length of a constraint1815

Trace number 10188

Launcher Data

LAUNCH ON wulflinc8 THE 2005-09-23 17:31:21 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8948 boxname=wulflinc8 idbench=744 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  cf076aa1d04c57dc685f8035f0968734  /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-neos13.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-neos13.opb
IDLAUNCH: 8948
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.023
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		: 451.023
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        871624 kB
Buffers:         13396 kB
Cached:         131648 kB
SwapCached:          0 kB
Active:          92836 kB
Inactive:        55148 kB
HighTotal:      131008 kB
HighFree:         3780 kB
LowTotal:       903652 kB
LowFree:        867844 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             9428 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:33:01 (client local time) WITH STATUS 1 IN 98.947 SECONDS
stats: 8948 7 98.947 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc

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/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22020855 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 373 2 364 364 0 9 0
[pid=9819] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-neos13.opb

[startup+10.0022 s]
Raw data (loadavg): 0.95 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 31450 0 0 0 931 64 0 0 25 0 1 0 22020855 99794944 20285 4294967295 134512640 135987407 3221224560 3221182044 135479982 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 24364 20286 364 364 0 24000 0
[pid=9819] vsize: 97456
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 97456

[startup+20.0029 s]
Raw data (loadavg): 0.96 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 62560 0 0 0 1868 125 0 0 25 0 1 0 22020855 197410816 40010 4294967295 134512640 135987407 3221224560 3221183296 134878092 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 48196 40010 364 364 0 47832 0
[pid=9819] vsize: 192784
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 192784

[startup+30.0037 s]
Raw data (loadavg): 0.97 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 105936 0 0 0 2778 211 0 0 25 0 1 0 22020855 331116544 60510 4294967295 134512640 135987407 3221224560 3221182272 134877884 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 80839 60511 364 364 0 80475 0
[pid=9819] vsize: 323356
Current children cumulated CPU time (s) 29.89
Current children cumulated vsize (Kb) 323356

[startup+40.0035 s]
Raw data (loadavg): 0.97 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 124201 0 0 0 3740 247 0 0 25 0 1 0 22020855 390758400 78533 4294967295 134512640 135987407 3221224560 3221181676 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 95400 78534 364 364 0 95036 0
[pid=9819] vsize: 381600
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 381600

[startup+50.0042 s]
Raw data (loadavg): 0.98 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 169313 0 0 0 4641 340 0 0 25 0 1 0 22020855 532881408 102138 4294967295 134512640 135987407 3221224560 3221181036 135482121 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 130098 102138 364 364 0 129734 0
[pid=9819] vsize: 520392
Current children cumulated CPU time (s) 49.81
Current children cumulated vsize (Kb) 520392

[startup+60.004 s]
Raw data (loadavg): 0.98 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 206263 0 0 0 5566 414 0 0 25 0 1 0 22020855 758947840 138860 4294967295 134512640 135987407 3221224560 3221182096 134887487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 185290 138864 364 364 0 184926 0
[pid=9819] vsize: 741160
Current children cumulated CPU time (s) 59.8
Current children cumulated vsize (Kb) 741160

[startup+70.0038 s]
Raw data (loadavg): 0.98 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 229685 0 0 0 6513 466 0 0 25 0 1 0 22020855 718327808 137462 4294967295 134512640 135987407 3221224560 3221182864 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 175373 137462 364 364 0 175009 0
[pid=9819] vsize: 701492
Current children cumulated CPU time (s) 69.79
Current children cumulated vsize (Kb) 701492

[startup+80.0046 s]
Raw data (loadavg): 0.98 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 246042 0 0 0 7481 496 0 0 25 0 1 0 22020855 741576704 153605 4294967295 134512640 135987407 3221224560 3221181988 135480418 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 181049 153606 364 364 0 180685 0
[pid=9819] vsize: 724196
Current children cumulated CPU time (s) 79.77
Current children cumulated vsize (Kb) 724196

[startup+90.0044 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 9819
Raw data (/proc/9819/stat): 9819 (pb2sat) R 9818 9819 4060 0 -1 0 265256 0 0 0 8445 530 0 0 25 0 1 0 22020855 769499136 172508 4294967295 134512640 135987407 3221224560 3221182576 134856487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9819/statm): 187866 172509 364 364 0 187502 0
[pid=9819] vsize: 751464
Current children cumulated CPU time (s) 89.75
Current children cumulated vsize (Kb) 751464
One traced child (pid=9819) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 99.2105
CPU time (s): 98.947
CPU user time (s): 93.2188
CPU system time (s): 5.72813
CPU usage (%): 99.7343
Max. virtual memory (cumulated for all children) (Kb): 751464

Verifier Data

ERROR: no interpretation found !