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-momentum2.opb
MD5SUMfdda3e6614261ac2a721bfd288fcd783
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 18541
Biggest coefficient in the objective function 81920000
Number of bits for the biggest coefficient in the objective function 27
Sum of the numbers in the objective function 454826456
Number of bits of the sum of numbers in the objective function 29
Biggest number in a constraint 128000000000000001700807049216
Number of bits of the biggest number in a constraint 97
Biggest sum of numbers in a constraint 467242513675650034629158633472
Number of bits of the biggest sum of numbers99
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.182971
Number of variables19741
Total number of constraints27909
Number of constraints which are clauses10362
Number of constraints which are cardinality constraints (but not clauses)1921
Number of constraints which are nor clauses,nor cardinality constraints15626
Minimum length of a constraint1
Maximum length of a constraint730

Trace number 41512 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-09 14:34:33 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29582 boxname=wulflinc5 idbench=1366 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  fdda3e6614261ac2a721bfd288fcd783  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-momentum2.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-momentum2.opb
IDLAUNCH: 29582
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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		: 451.007
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:        807588 kB
Buffers:         15632 kB
Cached:         189428 kB
SwapCached:        640 kB
Active:          81256 kB
Inactive:       125776 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        807336 kB
SwapTotal:     2097136 kB
SwapFree:      2095484 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5072 kB
Slab:            14224 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 14:35:23 (client local time) WITH STATUS 0 IN 48.3177 SECONDS
stats: 29582 7 48.3177 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c ERROR Parsing file!!!
c ERROR parsing line: +195312500000*x961_bit_7 +390625000000*x961_bit_6 +781250000000*x961_bit_5 +1562500000000*x961_bit_4 +3125000000000*x961_bit_3 +6250000000000*x961_bit_2 +12500000000000*x961_bit_1 +25000000000000*x961_bit0 +50000000000000*x961_bit1 -17146719*x2704_bit0 >= +0;
c Cannot parse input file name: /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-momentum2.opb
s UNKNOWN
c Exit Code: 0
c Total time: 48.246 s
#### 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): 0.94 0.97 0.92 2/54 2938
Raw data (stat): 2938 (runsolver) R 2937 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 911033455 884736 94 4294967295 134512640 135332820 3221224448 3221219628 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+10.001 s]
Raw data (loadavg): 0.95 0.97 0.92 2/54 2938
Raw data (stat): 2938 (bsolo_lpr_cuts-) R 2937 7266 7265 0 -1 0 5632 0 0 0 986 10 0 0 25 0 1 0 911033455 35983360 5552 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 8785 5552 1111 63 0 8722 0
vsize: 35140
[startup+20.0017 s]
Raw data (loadavg): 0.96 0.97 0.92 2/54 2938
Raw data (stat): 2938 (bsolo_lpr_cuts-) R 2937 7266 7265 0 -1 0 11244 0 0 0 1976 21 0 0 25 0 1 0 911033455 59019264 11164 4294967295 134512640 134716908 3221224560 3221222788 1077414336 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 14409 11164 1111 63 0 14346 0
vsize: 57636
[startup+30.002 s]
Raw data (loadavg): 0.96 0.97 0.92 2/54 2938
Raw data (stat): 2938 (bsolo_lpr_cuts-) R 2937 7266 7265 0 -1 0 17310 0 0 0 2964 33 0 0 25 0 1 0 911033455 83890176 17230 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 20481 17230 1111 63 0 20418 0
vsize: 81924
[startup+40.0032 s]
Raw data (loadavg): 0.97 0.97 0.92 2/54 2938
Raw data (stat): 2938 (bsolo_lpr_cuts-) R 2937 7266 7265 0 -1 0 24063 0 0 0 3952 45 0 0 25 0 1 0 911033455 111587328 23983 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 27243 23983 1111 63 0 27180 0
vsize: 108972
[startup+48.3526 s]
Raw data (loadavg): 0.97 0.97 0.92 1/53 2938
Raw data (stat): 2938 (bsolo_lpr_cuts-) R 2937 7266 7265 0 -1 0 24063 0 0 0 3952 45 0 0 25 0 1 0 911033455 111587328 23983 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 27243 23983 1111 63 0 27180 0
vsize: 0

Child status: 0
Real time (s): 48.3519
CPU time (s): 48.3177
CPU user time (s): 47.5828
CPU system time (s): 0.734888
CPU usage (%): 99.9292
Max. virtual memory (Kb): 108972
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####