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/MIPLIB/miplib2003/normalized-mps-v2-13-7-rd-rplusc-21.opb
MD5SUM62166f7982a2b3c488537a2a2dbe4149
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 35
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 3735451
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 383602153706972160
Number of bits of the biggest number in a constraint 59
Biggest sum of numbers in a constraint 772928706545624815
Number of bits of the biggest sum of numbers60
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark39.177
Number of variables2644
Total number of constraints126450
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)699
Number of constraints which are nor clauses,nor cardinality constraints125751
Minimum length of a constraint1
Maximum length of a constraint130

Trace number 18450 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc23 THE 2005-04-21 15:14:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=17959 boxname=wulflinc23 idbench=1382 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  62166f7982a2b3c488537a2a2dbe4149  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-rd-rplusc-21.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-rd-rplusc-21.opb
IDLAUNCH: 17959
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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	: 3
cpu MHz		: 451.037
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:        499764 kB
Buffers:         19040 kB
Cached:         490016 kB
SwapCached:        536 kB
Active:         189000 kB
Inactive:       322180 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        499512 kB
SwapTotal:     2097136 kB
SwapFree:      2095852 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5224 kB
Slab:            18032 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-21 15:16:24 (client local time) WITH STATUS 20 IN 111.102 SECONDS
stats: 17959 7 111.102 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-rd-rplusc-21.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.002999
#### 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
Raw data (loadavg): 1.02 1.01 0.94 2/54 7277
Raw data (stat): 7277 (runsolver) R 7276 3260 3259 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 546077309 1052672 99 4294967295 134512640 135381576 3221224512 3221219760 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0008 s]
Raw data (loadavg): 1.02 1.01 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 2044 0 0 0 984 15 0 0 25 0 1 0 546077309 9183232 1987 4294967295 134512640 135450300 3221224624 3221157216 134844342 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2242 1987 231 231 0 2011 0
vsize: 8968
[startup+20.001 s]
Raw data (loadavg): 1.01 1.01 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 3954 0 0 0 1972 27 0 0 25 0 1 0 546077309 16838656 3792 4294967295 134512640 135450300 3221224624 3221157324 134853520 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 4111 3792 231 231 0 3880 0
vsize: 16444
[startup+30.0006 s]
Raw data (loadavg): 1.01 1.01 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 6665 0 0 0 2958 41 0 0 25 0 1 0 546077309 27287552 6294 4294967295 134512640 135450300 3221224624 3221157360 134855135 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 6662 6294 231 231 0 6431 0
vsize: 26648
[startup+40.0006 s]
Raw data (loadavg): 1.01 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 6914 0 0 0 3948 51 0 0 25 0 1 0 546077309 28258304 6543 4294967295 134512640 135450300 3221224624 3221157360 134855240 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 6899 6543 231 231 0 6668 0
vsize: 27596
[startup+50.0009 s]
Raw data (loadavg): 1.01 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 13394 0 0 0 4928 72 0 0 25 0 1 0 546077309 55291904 12606 4294967295 134512640 135450300 3221224624 3221157488 134515800 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 13499 12606 231 231 0 13268 0
vsize: 53996
[startup+60.0005 s]
Raw data (loadavg): 1.01 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 13549 0 0 0 5918 81 0 0 25 0 1 0 546077309 55291904 12761 4294967295 134512640 135450300 3221224624 3221157344 134523757 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 13499 12761 231 231 0 13268 0
vsize: 53996
[startup+70.0016 s]
Raw data (loadavg): 1.00 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 13685 0 0 0 6908 92 0 0 25 0 1 0 546077309 55291904 12897 4294967295 134512640 135450300 3221224624 3221157488 134515563 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 13499 12897 231 231 0 13268 0
vsize: 53996
[startup+80.0018 s]
Raw data (loadavg): 1.00 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 13809 0 0 0 7898 101 0 0 25 0 1 0 546077309 54345728 12790 4294967295 134512640 135450300 3221224624 3221157424 134599719 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 13268 12790 231 231 0 13037 0
vsize: 53072
[startup+90.0015 s]
Raw data (loadavg): 1.00 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 14827 0 0 0 8886 114 0 0 25 0 1 0 546077309 58335232 13775 4294967295 134512640 135450300 3221224624 3221157344 134523738 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 14242 13775 231 231 0 14011 0
vsize: 56968
[startup+100.001 s]
Raw data (loadavg): 1.00 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 15978 0 0 0 9873 127 0 0 25 0 1 0 546077309 62844928 14860 4294967295 134512640 135450300 3221224624 3221157280 134853650 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 15343 14860 231 231 0 15112 0
vsize: 61372
[startup+110.002 s]
Raw data (loadavg): 1.00 1.00 0.94 2/54 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 28297 0 0 0 10841 159 0 0 25 0 1 0 546077309 113016832 26346 4294967295 134512640 135450300 3221224624 3221157584 134674695 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 27592 26346 231 231 0 27361 0
vsize: 110368
[startup+111.094 s]
Raw data (loadavg): 1.00 1.00 0.94 1/53 7277
Raw data (stat): 7277 (PBS4) R 7276 3260 3259 0 -1 0 28297 0 0 0 10841 159 0 0 25 0 1 0 546077309 113016832 26346 4294967295 134512640 135450300 3221224624 3221157584 134674695 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 27592 26346 231 231 0 27361 0
vsize: 0

Child status: 20
Real time (s): 111.094
CPU time (s): 111.102
CPU user time (s): 109.441
CPU system time (s): 1.66075
CPU usage (%): 100.007
Max. virtual memory (Kb): 110368
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####