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).
    Note that some very long lines in this section may be truncated by your web browser !
  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

Namemps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-misc01.opb
MD5SUMa96963da6c162c27e4853a5140494bde
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1074317824
Optimality of the best value was proved YES
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 3223595007
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark2.37864
Number of variables113
Total number of constraints136
Number of constraints which are clauses15
Number of constraints which are cardinality constraints (but not clauses)88
Number of constraints which are nor clauses,nor cardinality constraints33
Minimum length of a constraint1
Maximum length of a constraint101

Trace number 560

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-18 11:28:00 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=552 boxname=wulflinc18 idbench=552 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  a96963da6c162c27e4853a5140494bde  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb
IDLAUNCH: 552
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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	: 3
cpu MHz		: 451.177
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:        940992 kB
Buffers:         34456 kB
Cached:          24540 kB
SwapCached:        844 kB
Active:          53468 kB
Inactive:         8132 kB
HighTotal:      131008 kB
HighFree:       103460 kB
LowTotal:       903652 kB
LowFree:        837532 kB
SwapTotal:     2097892 kB
SwapFree:      2096548 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5764 kB
Slab:            26340 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 11:28:13 (client local time) WITH STATUS 30 IN 12.5651 SECONDS
stats: 552 0 12.5651 30

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 113 variables and 71 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.117
c After prepocess the problem consists of 113 variables and 71 constraints.
c Initial Lower Bound: 0
c Restart #1 #Var: 113 #Dec: 317 LB: 0 @ 0.302
c Restart #2 #Var: 113 #Dec: 913 LB: 0 @ 0.761
c Restart #3 #Var: 113 #Dec: 1644 LB: 0 @ 1.398
c Restart #4 #Var: 113 #Dec: 2516 LB: 0 @ 2.272
c Restart #5 #Var: 113 #Dec: 3541 LB: 0 @ 3.21
c Restart #6 #Var: 113 #Dec: 4816 LB: 0 @ 4.907
c Restart #7 #Var: 113 #Dec: 6251 LB: 0 @ 6.555
c Restart #8 #Var: 113 #Dec: 7952 LB: 0 @ 10.112
c NEW SOLUTION FOUND: 1074531840 @ 10.206 @ #Dec. 8017
c NEW SOLUTION FOUND: 1074458112 @ 10.219 @ #Dec. 8022
c NEW SOLUTION FOUND: 1074440704 @ 10.236 @ #Dec. 8027
c NEW SOLUTION FOUND: 1074425344 @ 10.635 @ #Dec. 8202
c NEW SOLUTION FOUND: 1074375168 @ 10.639 @ #Dec. 8202
c NEW SOLUTION FOUND: 1074367488 @ 10.648 @ #Dec. 8205
c NEW SOLUTION FOUND: 1074329088 @ 10.651 @ #Dec. 8205
c NEW SOLUTION FOUND: 1074317824 @ 10.689 @ #Dec. 8225
s OPTIMUM FOUND
v -COL083_bit_10 -COL083_bit_9 -COL083_bit_8 -COL083_bit_7 -COL083_bit_6 -COL083_bit_5 -COL083_bit_4 -COL083_bit_3 -COL083_bit_2 COL083_bit_1 -COL083_bit0 COL083_bit1 -COL083_bit2 -COL083_bit3 COL083_bit4 COL083_bit5 -COL083_bit6 -COL083_bit7 -COL083_bit8 COL083_bit9 -COL083_bit10 -COL083_bit11 -COL083_bit12 -COL083_bit13 -COL083_bit14 -COL083_bit15 -COL083_bit16 -COL083_bit17 -COL083_bit18 -COL083_bit19 COL083_bit20 -COL003_bit0 -COL004_bit0 -COL005_bit0 -COL006_bit0 -COL007_bit0 -COL008_bit0 -COL009_bit0 COL010_bit0 -COL011_bit0 -COL012_bit0 -COL013_bit0 COL014_bit0 -COL017_bit0 -COL018_bit0 -COL019_bit0 -COL020_bit0 -COL021_bit0 -COL022_bit0 -COL023_bit0 -COL024_bit0 -COL025_bit0 -COL026_bit0 -COL027_bit0 -COL028_bit0 COL031_bit0 -COL032_bit0 -COL033_bit0 -COL034_bit0 -COL035_bit0 -COL036_bit0 -COL037_bit0 -COL038_bit0 -COL039_bit0 -COL040_bit0 -COL041_bit0 -COL042_bit0 -COL045_bit0 -COL046_bit0 COL047_bit0 -COL048_bit0 -COL049_bit0 -COL050_bit0 -COL051_bit0 COL052_bit0 -COL053_bit0 -COL054_bit0 -COL055_bit0 -COL056_bit0 -COL059_bit0 -COL060_bit0 -COL061_bit0 -COL062_bit0 -COL063_bit0 -COL064_bit0 COL065_bit0 -COL066_bit0 -COL067_bit0 -COL068_bit0 -COL069_bit0 -COL070_bit0 COL073_bit0 COL074_bit0 COL075_bit0 -COL076_bit0 COL077_bit0 -COL078_bit0 -COL079_bit0 COL080_bit0 -COL081_bit0 COL082_bit0 -COL001_bit0 -COL002_bit0 -COL015_bit0 -COL016_bit0 -COL029_bit0 -COL030_bit0 -COL043_bit0 -COL044_bit0 -COL057_bit0 -COL058_bit0 -COL071_bit0 -COL072_bit0 
c Cost: 1074317824
c Exit Code: 30
c Total time: 12.54 s

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/342/stat): 342 (bsolo) R 341 342 31027 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1840859741 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/342/statm): 107 3 90 68 0 39 0
[pid=342] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
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open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
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open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb

[startup+10.0034 s]
Raw data (loadavg): 0.86 0.94 0.97 2/56 342
Raw data (/proc/342/stat): 342 (bsolo) R 341 342 31027 0 -1 0 5907 0 0 0 936 30 0 0 25 0 1 0 1840859741 27316224 5818 4294967295 134512640 134736556 3221224560 3221223164 134554100 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/342/statm): 6669 5818 1116 68 0 6601 0
[pid=342] vsize: 26676
Current children cumulated CPU time (s) 9.66
Current children cumulated vsize (Kb) 26676
One traced child (pid=342) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 12.9446
CPU time (s): 12.5651
CPU user time (s): 12.2001
CPU system time (s): 0.364944
CPU usage (%): 97.0683
Max. virtual memory (cumulated for all children) (Kb): 26676

Verifier Data

Verifier:	OK	1074317824