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/MIPLIB/miplib3/normalized-mps-v2-20-10-fast0507.opb
MD5SUM2854384016ebafb26c8bfb47f81aee87
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 324
Optimality of the best value was proved NO
Number of terms in the objective function 63009
Biggest coefficient in the objective function 2
Number of bits for the biggest coefficient in the objective function 2
Sum of the numbers in the objective function 122425
Number of bits of the sum of numbers in the objective function 17
Biggest number in a constraint 2
Number of bits of the biggest number in a constraint 2
Biggest sum of numbers in a constraint 122425
Number of bits of the biggest sum of numbers17
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1189.16
Number of variables63009
Total number of constraints63516
Number of constraints which are clauses507
Number of constraints which are cardinality constraints (but not clauses)63009
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint7753

Trace number 21276 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-04-21 23:35:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13337 boxname=wulflinc4 idbench=1026 idsolver=12 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  2854384016ebafb26c8bfb47f81aee87  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-fast0507.opb
REAL COMMAND:  minisat+ -cb -gs /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-fast0507.opb /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-fast0507.opb
IDLAUNCH: 13337
/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:        564304 kB
Buffers:         32044 kB
Cached:         416324 kB
SwapCached:        364 kB
Active:         118744 kB
Inactive:       332092 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        564052 kB
SwapTotal:     2097136 kB
SwapFree:      2096356 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           6404 kB
Slab:            13872 kB
Committed_AS:    71788 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-21 23:36:01 (client local time) WITH STATUS 0 IN 48.9316 SECONDS
stats: 13337 7 48.9316 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Parsing PB file...
c Converting 494 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: ==
c   -- Clauses(.)/Splits(s): .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |     487   407371 |     162       0        0     nan |  0.000 % |
#### 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): 0.75 0.94 0.94 2/54 19933
Raw data (stat): 19933 (runsolver) R 19932 5897 5896 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 490856273 1052672 99 4294967295 134512640 135381576 3221224432 3221219676 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0004 s]
Raw data (loadavg): 0.79 0.94 0.94 2/54 19933
Raw data (stat): 19933 (minisat+) R 19932 5897 5896 0 -1 0 33810 0 0 0 919 79 0 0 25 0 1 0 490856273 138444800 27865 4294967295 134512640 134672761 3221224528 3221222672 134544728 0 0 5 16386 0 0 0 17 1 0 0
Raw data (statm): 33800 27865 603 41 0 33759 0
vsize: 135200
[startup+20.0014 s]
Raw data (loadavg): 0.82 0.94 0.94 2/54 19933
Raw data (stat): 19933 (minisat+) R 19932 5897 5896 0 -1 0 88751 0 0 0 1803 196 0 0 25 0 1 0 490856273 356810752 77533 4294967295 134512640 134672761 3221224528 3221222096 134523714 0 0 5 16386 0 0 0 17 1 0 0
Raw data (statm): 87112 77533 603 41 0 87071 0
vsize: 348448
[startup+30.0012 s]
Raw data (loadavg): 0.85 0.94 0.94 2/54 19933
Raw data (stat): 19933 (minisat+) R 19932 5897 5896 0 -1 0 128838 0 0 0 2717 282 0 0 25 0 1 0 490856273 480157696 106456 4294967295 134512640 134672761 3221224528 3221197728 1075350517 0 0 5 16386 0 0 0 17 1 0 0
Raw data (statm): 117226 106457 603 41 0 117185 0
vsize: 468904
[startup+40.0008 s]
Raw data (loadavg): 0.87 0.94 0.94 2/54 19933
Raw data (stat): 19933 (minisat+) R 19932 5897 5896 0 -1 0 185038 0 0 0 3591 408 0 0 25 0 1 0 490856273 756056064 162656 4294967295 134512640 134672761 3221224528 3221207280 1075350517 0 0 5 16386 0 0 0 17 1 0 0
Raw data (statm): 184584 162657 603 41 0 184543 0
vsize: 738336
[startup+48.9339 s]
Raw data (loadavg): 0.89 0.94 0.94 1/53 19933
Raw data (stat): 19933 (minisat+) R 19932 5897 5896 0 -1 0 185038 0 0 0 3591 408 0 0 25 0 1 0 490856273 756056064 162656 4294967295 134512640 134672761 3221224528 3221207280 1075350517 0 0 5 16386 0 0 0 17 1 0 0
Raw data (statm): 184584 162657 603 41 0 184543 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 48.9333
CPU time (s): 48.9316
CPU user time (s): 43.3344
CPU system time (s): 5.59715
CPU usage (%): 99.9965
Max. virtual memory (Kb): 738336
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####