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).
  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

Namenormalized-opb/mps-v2-13-7/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos17.opb
MD5SUM0094639e675238eae16e44b5d375cf2e
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2269138
Optimality of the best value was proved NO
Number of terms in the objective function 1610
Biggest coefficient in the objective function 3457920
Number of bits for the biggest coefficient in the objective function 22
Sum of the numbers in the objective function 13794172
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 1638400000000
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 39322360302947
Number of bits of the biggest sum of numbers46
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1228.72
Number of variables2300
Total number of constraints971
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)300
Number of constraints which are nor clauses,nor cardinality constraints671
Minimum length of a constraint1
Maximum length of a constraint520

Trace number 42988 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-06-16 20:41:06 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=26209 boxname=wulflinc4 idbench=1509 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  0094639e675238eae16e44b5d375cf2e  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-neos17.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-neos17.opb
IDLAUNCH: 26209
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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:        738240 kB
Buffers:         20464 kB
Cached:         253828 kB
SwapCached:        904 kB
Active:          28288 kB
Inactive:       248124 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        737988 kB
SwapTotal:     2097136 kB
SwapFree:      2095236 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           4996 kB
Slab:            14308 kB
Committed_AS:    71904 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 20:42:49 (client local time) WITH STATUS 1 IN 102.243 SECONDS
stats: 26209 7 102.243 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.91 0.95 0.90 2/54 32598
Raw data (stat): 32598 (runsolver) R 32597 21152 21151 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 973710881 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0015 s]
Raw data (loadavg): 0.93 0.95 0.90 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 26562 0 0 0 939 60 0 0 25 0 1 0 973710881 76959744 15641 4294967295 134512640 135730672 3221224576 3221221552 134539970 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 18789 15641 301 301 0 18488 0
vsize: 75156
[startup+20.0028 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 53158 0 0 0 1875 124 0 0 25 0 1 0 973710881 153219072 31258 4294967295 134512640 135730672 3221224576 3221182656 134785978 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 37407 31258 301 301 0 37106 0
vsize: 149628
[startup+30.0032 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 90905 0 0 0 2800 199 0 0 25 0 1 0 973710881 266530816 47318 4294967295 134512640 135730672 3221224576 3221154812 135282200 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 65071 47318 301 301 0 64770 0
vsize: 260284
[startup+40.0041 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 104264 0 0 0 3768 231 0 0 25 0 1 0 973710881 301842432 60432 4294967295 134512640 135730672 3221224576 3221166912 135288528 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 73692 60432 301 301 0 73391 0
vsize: 294768
[startup+50.0054 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 143727 0 0 0 4692 307 0 0 25 0 1 0 973710881 427220992 81312 4294967295 134512640 135730672 3221224576 3221191252 135281170 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 104302 81312 301 301 0 104001 0
vsize: 417208
[startup+60.0058 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 179106 0 0 0 5615 384 0 0 25 0 1 0 973710881 527884288 91909 4294967295 134512640 135730672 3221224576 3221160400 134785858 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 128878 91909 301 301 0 128577 0
vsize: 515512
[startup+70.0067 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 190907 0 0 0 6586 413 0 0 25 0 1 0 973710881 561438720 103485 4294967295 134512640 135730672 3221224576 3221163648 135284200 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 137070 103485 301 301 0 136769 0
vsize: 548280
[startup+80.008 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 205819 0 0 0 7552 447 0 0 25 0 1 0 973710881 564682752 118129 4294967295 134512640 135730672 3221224576 3221170636 135104780 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 137862 118129 301 301 0 137561 0
vsize: 551448
[startup+90.0084 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 221273 0 0 0 8514 485 0 0 25 0 1 0 973710881 632512512 133368 4294967295 134512640 135730672 3221224576 3221128864 134784071 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 154422 133368 301 301 0 154121 0
vsize: 617688
[startup+100.008 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 241201 0 0 0 9455 544 0 0 25 0 1 0 973710881 284758016 69229 4294967295 134512640 135730672 3221224576 3221222976 134782612 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 69521 69229 301 301 0 69220 0
vsize: 278084
[startup+102.255 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 32598
Raw data (stat): 32598 (pb2sat-v2) R 32597 21152 21151 0 -1 0 241201 0 0 0 9455 544 0 0 25 0 1 0 973710881 284758016 69229 4294967295 134512640 135730672 3221224576 3221222976 134782612 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 69521 69229 301 301 0 69220 0
vsize: 0

Child status: 1
Real time (s): 102.254
CPU time (s): 102.243
CPU user time (s): 96.6463
CPU system time (s): 5.59715
CPU usage (%): 99.9897
Max. virtual memory (Kb): 617688
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####