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-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-misc01.opb
MD5SUMc625a850881ad6f6b45ac56ea24bd563
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1120576
Optimality of the best value was proved YES
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 1048576
Number of bits of the biggest number in a constraint 21
Biggest sum of numbers in a constraint 3441919
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.383941
Number of variables103
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 constraint91

Trace number 5102

Launcher Data

LAUNCH ON wulflinc2 THE 2005-09-19 22:49:05 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=901 boxname=wulflinc2 idbench=901 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  c625a850881ad6f6b45ac56ea24bd563  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-misc01.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-misc01.opb
IDLAUNCH: 901
/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:        872840 kB
Buffers:         34648 kB
Cached:         101364 kB
SwapCached:       1756 kB
Active:          33020 kB
Inactive:       106340 kB
HighTotal:      131008 kB
HighFree:        28784 kB
LowTotal:       903652 kB
LowFree:        844056 kB
SwapTotal:     2097136 kB
SwapFree:      2094852 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5700 kB
Slab:            16708 kB
Committed_AS:    72360 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-19 22:49:14 (client local time) WITH STATUS 30 IN 8.00178 SECONDS
stats: 901 0 8.00178 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 103 variables and 71 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.114
c After prepocess the problem consists of 103 variables and 71 constraints.
c Initial Lower Bound: 0
c Restart #1 #Var: 103 #Dec: 333 LB: 0 @ 0.276
c Restart #2 #Var: 103 #Dec: 892 LB: 0 @ 0.72
c Restart #3 #Var: 103 #Dec: 1566 LB: 0 @ 1.296
c Restart #4 #Var: 103 #Dec: 2395 LB: 0 @ 2.013
c Restart #5 #Var: 103 #Dec: 3432 LB: 0 @ 3.276
c Restart #6 #Var: 103 #Dec: 4680 LB: 0 @ 4.781
c NEW SOLUTION FOUND: 1147136 @ 4.934 @ #Dec. 4837
c NEW SOLUTION FOUND: 1142656 @ 4.937 @ #Dec. 4840
c NEW SOLUTION FOUND: 1135936 @ 4.939 @ #Dec. 4842
c NEW SOLUTION FOUND: 1125568 @ 5.137 @ #Dec. 5010
c NEW SOLUTION FOUND: 1121984 @ 5.14 @ #Dec. 5011
c NEW SOLUTION FOUND: 1120576 @ 5.196 @ #Dec. 5069
s OPTIMUM FOUND
v -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 -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: 1120576
c Exit Code: 30
c Total time: 7.981 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/30946/stat): 30946 (bsolo) R 30945 30946 6872 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1795406376 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/30946/statm): 107 3 90 68 0 39 0
[pid=30946] vsize: 428
open syscall for file /etc/ld.so.preload
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One traced child (pid=30946) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 8.28955
CPU time (s): 8.00178
CPU user time (s): 7.75282
CPU system time (s): 0.248962
CPU usage (%): 96.5285
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	1120576