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-p0040.opb
MD5SUM1c249519911563f3292efb34f4875b44
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 62027
Optimality of the best value was proved YES
Number of terms in the objective function 40
Biggest coefficient in the objective function 8161
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 265332
Number of bits of the sum of numbers in the objective function 19
Biggest number in a constraint 8161
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 265332
Number of bits of the biggest sum of numbers19
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark7.98079
Number of variables40
Total number of constraints63
Number of constraints which are clauses10
Number of constraints which are cardinality constraints (but not clauses)50
Number of constraints which are nor clauses,nor cardinality constraints3
Minimum length of a constraint1
Maximum length of a constraint10

Trace number 5115

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-19 22:53:00 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=913 boxname=wulflinc23 idbench=913 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  1c249519911563f3292efb34f4875b44  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-p0040.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-p0040.opb
IDLAUNCH: 913
/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:        915444 kB
Buffers:          8360 kB
Cached:          82912 kB
SwapCached:        800 kB
Active:          27828 kB
Inactive:        66076 kB
HighTotal:      131008 kB
HighFree:        44016 kB
LowTotal:       903652 kB
LowFree:        871428 kB
SwapTotal:     2097136 kB
SwapFree:      2095856 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5692 kB
Slab:            19484 kB
Committed_AS:    64220 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-19 22:53:09 (client local time) WITH STATUS 30 IN 7.98079 SECONDS
stats: 913 0 7.98079 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 40 variables and 23 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.046
c After prepocess the problem consists of 40 variables and 23 constraints.
c Initial Lower Bound: 0
c NEW SOLUTION FOUND: 67345 @ 0.047 @ #Dec. 22
c NEW SOLUTION FOUND: 67097 @ 0.047 @ #Dec. 22
c NEW SOLUTION FOUND: 66572 @ 0.047 @ #Dec. 23
c NEW SOLUTION FOUND: 66458 @ 0.049 @ #Dec. 33
c NEW SOLUTION FOUND: 66408 @ 0.052 @ #Dec. 48
c NEW SOLUTION FOUND: 66398 @ 0.06 @ #Dec. 89
c NEW SOLUTION FOUND: 65991 @ 0.061 @ #Dec. 102
c NEW SOLUTION FOUND: 65941 @ 0.063 @ #Dec. 116
c NEW SOLUTION FOUND: 65733 @ 0.064 @ #Dec. 121
c NEW SOLUTION FOUND: 65282 @ 0.065 @ #Dec. 121
c NEW SOLUTION FOUND: 65232 @ 0.067 @ #Dec. 132
c NEW SOLUTION FOUND: 65178 @ 0.072 @ #Dec. 157
c NEW SOLUTION FOUND: 65118 @ 0.073 @ #Dec. 164
c Restart #1 #Var: 40 #Dec: 408 LB: 0 @ 0.109
c NEW SOLUTION FOUND: 65087 @ 0.161 @ #Dec. 685
c NEW SOLUTION FOUND: 64990 @ 0.166 @ #Dec. 713
c NEW SOLUTION FOUND: 64536 @ 0.166 @ #Dec. 714
c Restart #2 #Var: 40 #Dec: 1164 LB: 0 @ 0.275
c NEW SOLUTION FOUND: 64512 @ 0.343 @ #Dec. 1490
c NEW SOLUTION FOUND: 64264 @ 0.343 @ #Dec. 1491
c NEW SOLUTION FOUND: 64058 @ 0.374 @ #Dec. 1632
c NEW SOLUTION FOUND: 63810 @ 0.375 @ #Dec. 1633
c NEW SOLUTION FOUND: 63803 @ 0.51 @ #Dec. 2199
c Restart #3 #Var: 40 #Dec: 2952 LB: 0 @ 0.699
c Restart #4 #Var: 40 #Dec: 3947 LB: 0 @ 0.922
c NEW SOLUTION FOUND: 63781 @ 0.96 @ #Dec. 4044
c NEW SOLUTION FOUND: 63563 @ 0.964 @ #Dec. 4058
c NEW SOLUTION FOUND: 63463 @ 0.967 @ #Dec. 4067
c NEW SOLUTION FOUND: 63215 @ 0.967 @ #Dec. 4068
c Restart #5 #Var: 40 #Dec: 5171 LB: 0 @ 1.311
c Restart #6 #Var: 40 #Dec: 6457 LB: 0 @ 1.695
c NEW SOLUTION FOUND: 63196 @ 1.731 @ #Dec. 6517
c NEW SOLUTION FOUND: 62630 @ 1.733 @ #Dec. 6524
c NEW SOLUTION FOUND: 62576 @ 1.942 @ #Dec. 7353
c Restart #7 #Var: 40 #Dec: 8936 LB: 0 @ 2.528
c Restart #8 #Var: 40 #Dec: 10849 LB: 0 @ 3.223
c Restart #9 #Var: 40 #Dec: 12968 LB: 0 @ 3.991
c Restart #10 #Var: 40 #Dec: 15408 LB: 0 @ 5.197
c CHANGE to LPR mode... 	UB: 62576	MIS: 0	LPR: 61830 (0.012)	Diff: 0
c Restart #0 #Var: 40 #Dec: 17872 LB: 0 @ 6.241
c NEW SOLUTION FOUND: 62567 @ 6.325 @ #Dec. 17875
c NEW SOLUTION FOUND: 62438 @ 6.422 @ #Dec. 17877
c NEW SOLUTION FOUND: 62129 @ 6.674 @ #Dec. 17881
c NEW SOLUTION FOUND: 62119 @ 6.753 @ #Dec. 17883
c NEW SOLUTION FOUND: 62027 @ 7.075 @ #Dec. 17889
s OPTIMUM FOUND
v -C1001_bit0 C1002_bit0 -C1003_bit0 -C1004_bit0 -C1005_bit0 C1006_bit0 -C1007_bit0 -C1008_bit0 C1009_bit0 -C1010_bit0 -C1011_bit0 -C1012_bit0 -C1013_bit0 -C1014_bit0 C1015_bit0 -C1016_bit0 -C1017_bit0 C1018_bit0 -C1019_bit0 -C1020_bit0 -C1021_bit0 C1022_bit0 -C1023_bit0 -C1024_bit0 -C1025_bit0 C1026_bit0 -C1027_bit0 -C1028_bit0 C1029_bit0 -C1030_bit0 -C1031_bit0 -C1032_bit0 -C1033_bit0 C1034_bit0 -C1035_bit0 -C1036_bit0 -C1037_bit0 C1038_bit0 -C1039_bit0 -C1040_bit0 
c Cost: 62027
c Exit Code: 30
c Total time: 7.961 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/24443/stat): 24443 (bsolo) R 24442 24443 5299 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1853655951 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/24443/statm): 107 3 90 68 0 39 0
[pid=24443] vsize: 428
open syscall for file /etc/ld.so.preload
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open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-p0040.opb
One traced child (pid=24443) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 8.70907
CPU time (s): 7.98079
CPU user time (s): 7.47186
CPU system time (s): 0.508922
CPU usage (%): 91.6376
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	62027