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 3863

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-19 03:27:16 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2896 boxname=wulflinc25 idbench=552 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  a96963da6c162c27e4853a5140494bde  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc01.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc01.opb
IDLAUNCH: 2896
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        893832 kB
Buffers:         36344 kB
Cached:          77544 kB
SwapCached:        896 kB
Active:          71732 kB
Inactive:        44776 kB
HighTotal:      131008 kB
HighFree:        52052 kB
LowTotal:       903652 kB
LowFree:        841780 kB
SwapTotal:     2097892 kB
SwapFree:      2096496 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5720 kB
Slab:            18624 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:27:18 (client local time) WITH STATUS 30 IN 2.37864 SECONDS
stats: 2896 0 2.37864 30

Solver Data

c Parsing PB file...
c Converting 71 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: #################
c   -- Clauses(.)/Splits(s): ...............
c ---[  69]---> Adder-cost: 406   maxlim: 1073742847   bits: 32/31
c ---[  67]---> BDD-cost:   21
c ---[  65]---> BDD-cost:   21
c ---[  63]---> BDD-cost:   21
c ---[  61]---> BDD-cost:   21
c ---[  60]---> BDD-cost:   92
c ---[  59]---> BDD-cost:   92
c ---[  42]---> BDD-cost:   33
c ---[  40]---> BDD-cost:   33
c ---[  38]---> BDD-cost:   33
c ---[  36]---> BDD-cost:   33
c ---[  34]---> Sorter-cost:   65     Base:
c ---[  32]---> BDD-cost:   33
c ---[  30]---> BDD-cost:   33
c ---[  28]---> BDD-cost:   33
c ---[  26]---> BDD-cost:   33
c ---[  24]---> BDD-cost:   33
c ---[  22]---> Sorter-cost:   65     Base:
c ---[  20]---> BDD-cost:   33
c ---[  19]---> BDD-cost:   13
c ---[  18]---> BDD-cost:   13
c ---[  17]---> BDD-cost:    7
c ---[  16]---> BDD-cost:    7
c ---[  15]---> BDD-cost:   32
c ---[  14]---> BDD-cost:   32
c ---[  13]---> BDD-cost:   18
c ---[  12]---> BDD-cost:   18
c ---[  11]---> BDD-cost:   32
c ---[  10]---> BDD-cost:   32
c ---[   9]---> BDD-cost:   18
c ---[   8]---> BDD-cost:   18
c ---[   7]---> BDD-cost:   32
c ---[   6]---> BDD-cost:   32
c ---[   5]---> BDD-cost:   18
c ---[   4]---> BDD-cost:   18
c ---[   3]---> BDD-cost:   18
c ---[   2]---> BDD-cost:   18
c ---[   1]---> BDD-cost:   18
c ---[   0]---> BDD-cost:   18
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |    5564    17577 |    1854       0        0     nan |  0.000 % |
c |       104 |    5564    17577 |    2039     104     2424    23.3 |  7.134 % |
c ==============================================================================
c Found solution: 1074350592
c ---[   0]---> BDD-cost:   21
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       115 |    5590    17634 |    1863     115     2636    22.9 |  7.134 % |
c |       216 |    5590    17634 |    2049     216     7056    32.7 |  7.152 % |
c |       368 |    5590    17634 |    2254     368    10989    29.9 |  7.152 % |
c ==============================================================================
c Found solution: 1074329088
c ---[   0]---> BDD-cost:   21
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       525 |    5611    17683 |    1870     525    15942    30.4 |  7.152 % |
c ==============================================================================
c Found solution: 1074317824
c ---[   0]---> BDD-cost:   16
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       578 |    5629    17722 |    1876     578    18180    31.5 |  7.152 % |
c |       679 |    5629    17722 |    2063     679    22390    33.0 |  7.221 % |
c |       831 |    5622    17707 |    2269     830    26818    32.3 |  7.341 % |
c |      1058 |    5622    17707 |    2496    1057    35139    33.2 |  7.341 % |
c |      1395 |    5607    17654 |    2746    1391    44318    31.9 |  7.401 % |
c |      1902 |    5607    17654 |    3021    1898    56602    29.8 |  7.401 % |
c |      2664 |    5607    17654 |    3323    2660    76931    28.9 |  7.401 % |
c ==============================================================================
c Optimal solution: 1074317824
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 -COL001_bit0 -COL002_bit0 -COL003_bit0 -COL004_bit0 -COL005_bit0 -COL006_bit0 -COL007_bit0 -COL008_bit0 -COL009_bit0 COL010_bit0 -COL011_bit0 -COL012_bit0 -COL013_bit0 COL014_bit0 -COL015_bit0 -COL016_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 -COL029_bit0 -COL030_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 -COL043_bit0 -COL044_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 -COL057_bit0 -COL058_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 -COL071_bit0 -COL072_bit0 COL073_bit0 COL074_bit0 COL075_bit0 -COL076_bit0 COL077_bit0 -COL078_bit0 -COL079_bit0 COL080_bit0 -COL081_bit0 COL082_bit0
c _______________________________________________________________________________
c 
c restarts              : 13
c conflicts             : 3732           (1605 /sec)
c decisions             : 6819           (2932 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 2.32565 s
c _______________________________________________________________________________

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/19237/stat): 19237 (minisat+_script) R 19236 19237 4419 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1846676907 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/19237/statm): 174 3 169 147 0 27 0
[pid=19237] vsize: 696
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libtermcap.so.2
open syscall for file tls/i686/libtermcap.so.2
open syscall for file tls/mmx/libtermcap.so.2
open syscall for file tls/libtermcap.so.2
open syscall for file i686/mmx/libtermcap.so.2
open syscall for file i686/libtermcap.so.2
open syscall for file mmx/libtermcap.so.2
open syscall for file libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/libtermcap.so.2
open syscall for file /etc/ld.so.cache
open syscall for file /lib/libtermcap.so.2
open syscall for file tls/i686/mmx/libdl.so.2
open syscall for file tls/i686/libdl.so.2
open syscall for file tls/mmx/libdl.so.2
open syscall for file tls/libdl.so.2
open syscall for file i686/mmx/libdl.so.2
open syscall for file i686/libdl.so.2
open syscall for file mmx/libdl.so.2
open syscall for file libdl.so.2
open syscall for file /oldhome/oroussel/lib/libdl.so.2
open syscall for file /lib/libdl.so.2
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6
open syscall for file /dev/tty
open syscall for file /etc/mtab
open syscall for file /proc/meminfo
open syscall for file /oldhome/oroussel/solvers/minisat+_script
New process pid=19238
New process pid=19239
New process pid=19240
execve syscall for /bin/sed executable
One traced child (pid=19239) exited with status: 0
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libc.so.6
One traced child (pid=19240) exited with status: 0
One traced child (pid=19238) exited with status: 0
New process pid=19241
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc01.opb
One traced child (pid=19241) exited with status: 30
One traced child (pid=19237) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 2.43153
CPU time (s): 2.37864
CPU user time (s): 2.33365
CPU system time (s): 0.044993
CPU usage (%): 97.8245
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	1074317824