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-v2-20-10/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos11.opb
MD5SUM61549d48f99a5af6fe87bd8bf474bfaf
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 9216
Optimality of the best value was proved NO
Number of terms in the objective function 5400
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 193273528140
Number of bits of the sum of numbers in the objective function 38
Biggest number in a constraint 536870912
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 193273528140
Number of bits of the biggest sum of numbers38
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1202.33
Number of variables8600
Total number of constraints3706
Number of constraints which are clauses600
Number of constraints which are cardinality constraints (but not clauses)1020
Number of constraints which are nor clauses,nor cardinality constraints2086
Minimum length of a constraint1
Maximum length of a constraint450

Trace number 42597 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-06-16 12:22:48 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25818 boxname=wulflinc1 idbench=1118 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  61549d48f99a5af6fe87bd8bf474bfaf  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-neos11.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-neos11.opb
IDLAUNCH: 25818
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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		: 451.053
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:        557312 kB
Buffers:         31088 kB
Cached:         421628 kB
SwapCached:       1184 kB
Active:          30116 kB
Inactive:       424940 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        557060 kB
SwapTotal:     2097136 kB
SwapFree:      2094888 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5364 kB
Slab:            16444 kB
Committed_AS:    92708 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 12:24:41 (client local time) WITH STATUS 1 IN 112.794 SECONDS
stats: 25818 7 112.794 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 186831089484
c big objective detected
c trying from 0 to 511

	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): 0.92 0.95 0.90 2/55 18241
Raw data (stat): 18241 (runsolver) R 18240 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 913873652 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0006 s]
Raw data (loadavg): 0.93 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 13737 0 0 0 966 32 0 0 25 0 1 0 913873652 42684416 8054 4294967295 134512640 135730672 3221224576 3221223072 134747549 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 10421 8054 301 301 0 10120 0
vsize: 41684
[startup+20.0016 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 40225 0 0 0 1909 89 0 0 25 0 1 0 913873652 119631872 24103 4294967295 134512640 135730672 3221224576 3218788200 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 29207 24104 301 301 0 28906 0
vsize: 116828
[startup+30.0011 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 75277 0 0 0 2845 154 0 0 25 0 1 0 913873652 274919424 52321 4294967295 134512640 135730672 3221224576 3219949400 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 67119 52323 301 301 0 66818 0
vsize: 268476
[startup+40.0009 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 100083 0 0 0 3788 210 0 0 25 0 1 0 913873652 296759296 55891 4294967295 134512640 135730672 3221224576 3219426664 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72451 55891 301 301 0 72150 0
vsize: 289804
[startup+50.0007 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 118285 0 0 0 4748 251 0 0 25 0 1 0 913873652 359915520 73866 4294967295 134512640 135730672 3221224576 3219285144 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 87870 73867 301 301 0 87569 0
vsize: 351480
[startup+60.0005 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 155987 0 0 0 5678 321 0 0 25 0 1 0 913873652 488542208 93006 4294967295 134512640 135730672 3221224576 3219238988 135301630 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 119273 93006 301 301 0 118972 0
vsize: 477092
[startup+70.0003 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 191077 0 0 0 6598 402 0 0 25 0 1 0 913873652 589205504 103306 4294967295 134512640 135730672 3221224576 3219018324 134772204 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 143849 103307 301 301 0 143548 0
vsize: 575396
[startup+80.0004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 204128 0 0 0 7567 432 0 0 25 0 1 0 913873652 632762368 116144 4294967295 134512640 135730672 3221224576 3220964608 134784074 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 154483 116144 301 301 0 154182 0
vsize: 617932
[startup+90.0009 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 222611 0 0 0 8527 473 0 0 25 0 1 0 913873652 660877312 134392 4294967295 134512640 135730672 3221224576 3219944792 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 161347 134392 301 301 0 161046 0
vsize: 645388
[startup+100.001 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 242148 0 0 0 9474 523 0 0 25 0 1 0 913873652 693993472 153699 4294967295 134512640 135730672 3221224576 3220027848 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 169432 153699 301 301 0 169131 0
vsize: 677728
[startup+110.002 s]
Raw data (loadavg): 0.98 0.97 0.91 2/55 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 248139 0 0 0 10458 536 0 0 25 0 1 0 913873652 703692800 159552 4294967295 134512640 135730672 3221224576 3221222828 135281187 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 171800 159552 301 301 0 171499 0
vsize: 687200
[startup+112.849 s]
Raw data (loadavg): 0.98 0.97 0.91 1/54 18241
Raw data (stat): 18241 (pb2sat-v2) R 18240 8378 8377 0 -1 0 248139 0 0 0 10458 536 0 0 25 0 1 0 913873652 703692800 159552 4294967295 134512640 135730672 3221224576 3221222828 135281187 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 171800 159552 301 301 0 171499 0
vsize: 0

Child status: 1
Real time (s): 112.849
CPU time (s): 112.794
CPU user time (s): 107.107
CPU system time (s): 5.68713
CPU usage (%): 99.9513
Max. virtual memory (Kb): 687200
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####