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-bc1.opb
MD5SUMcf391497c5a28b773d7c43cd006668b6
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 21
Biggest coefficient in the objective function 1048576
Number of bits for the biggest coefficient in the objective function 21
Sum of the numbers in the objective function 2097151
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 1048576000000000000000000
Number of bits of the biggest number in a constraint 80
Biggest sum of numbers in a constraint 3239461173145800120729600
Number of bits of the biggest sum of numbers82
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark2.33964
Number of variables19894
Total number of constraints3627
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)336
Number of constraints which are nor clauses,nor cardinality constraints3291
Minimum length of a constraint1
Maximum length of a constraint4476

Trace number 42974 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc2 THE 2005-06-16 20:14:25 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=26193 boxname=wulflinc2 idbench=1493 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  cf391497c5a28b773d7c43cd006668b6  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-bc1.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-bc1.opb
IDLAUNCH: 26193
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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		: 451.191
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:        507952 kB
Buffers:         27876 kB
Cached:         475672 kB
SwapCached:       1420 kB
Active:          99168 kB
Inactive:       406444 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        507700 kB
SwapTotal:     2097136 kB
SwapFree:      2094720 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5056 kB
Slab:            15416 kB
Committed_AS:    71892 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 20:16:17 (client local time) WITH STATUS 1 IN 110.896 SECONDS
stats: 26193 7 110.896 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): 0.90 0.96 0.91 1/54 15118
Raw data (stat): 15118 (runsolver) R 15117 31399 31398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 973565013 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 s]
Raw data (loadavg): 0.91 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 27774 0 0 0 937 61 0 0 25 0 1 0 973565013 87597056 16877 4294967295 134512640 135730672 3221224576 3220462280 135284962 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21386 16877 301 301 0 21085 0
vsize: 85544
[startup+20.0007 s]
Raw data (loadavg): 0.93 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 56321 0 0 0 1876 122 0 0 25 0 1 0 973565013 173453312 34466 4294967295 134512640 135730672 3221224576 3220806884 134786085 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42347 34466 301 301 0 42046 0
vsize: 169388
[startup+30.001 s]
Raw data (loadavg): 0.94 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 96647 0 0 0 2793 206 0 0 25 0 1 0 973565013 296742912 53113 4294967295 134512640 135730672 3221224576 3221142004 134612555 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72447 53113 301 301 0 72146 0
vsize: 289788
[startup+40.0011 s]
Raw data (loadavg): 0.95 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 107682 0 0 0 3768 230 0 0 25 0 1 0 973565013 331919360 63957 4294967295 134512640 135730672 3221224576 3220467660 135301642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 81035 63957 301 301 0 80734 0
vsize: 324140
[startup+50.0018 s]
Raw data (loadavg): 0.95 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 121145 0 0 0 4742 256 0 0 25 0 1 0 973565013 331919360 77180 4294967295 134512640 135730672 3221224576 3220875576 135284287 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 81035 77180 301 301 0 80734 0
vsize: 324140
[startup+60.002 s]
Raw data (loadavg): 0.96 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 182090 0 0 0 5629 370 0 0 25 0 1 0 973565013 554708992 95015 4294967295 134512640 135730672 3221224576 3220947180 134637873 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 135427 95015 301 301 0 135126 0
vsize: 541708
[startup+70.0022 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 193781 0 0 0 6603 396 0 0 25 0 1 0 973565013 588263424 106498 4294967295 134512640 135730672 3221224576 3221110136 135284279 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 143619 106498 301 301 0 143318 0
vsize: 574476
[startup+80.0029 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 204284 0 0 0 7584 415 0 0 25 0 1 0 973565013 588349440 116792 4294967295 134512640 135730672 3221224576 3220154096 134546483 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 143640 116792 301 301 0 143339 0
vsize: 574560
[startup+90.003 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 218244 0 0 0 8557 442 0 0 25 0 1 0 973565013 596459520 130514 4294967295 134512640 135730672 3221224576 3220150480 134732241 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 145620 130514 301 301 0 145319 0
vsize: 582480
[startup+100.003 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 233066 0 0 0 9527 470 0 0 25 0 1 0 973565013 669310976 145153 4294967295 134512640 135730672 3221224576 3220153336 135285983 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 163406 145154 301 301 0 163105 0
vsize: 653624
[startup+110.003 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 241134 0 0 0 10494 499 0 0 25 0 1 0 973565013 329826304 80063 4294967295 134512640 135730672 3221224576 3221222928 135284078 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 80524 80063 301 301 0 80223 0
vsize: 322096
[startup+110.959 s]
Raw data (loadavg): 0.98 0.97 0.91 1/53 15118
Raw data (stat): 15118 (pb2sat-v2) R 15117 31399 31398 0 -1 0 241134 0 0 0 10494 499 0 0 25 0 1 0 973565013 329826304 80063 4294967295 134512640 135730672 3221224576 3221222928 135284078 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 80524 80063 301 301 0 80223 0
vsize: 0

Child status: 1
Real time (s): 110.958
CPU time (s): 110.896
CPU user time (s): 105.726
CPU system time (s): 5.17021
CPU usage (%): 99.9438
Max. virtual memory (Kb): 653624
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####