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/miplib3/normalized-mps-v2-20-10-p0033.opb
MD5SUMac34ff6897914e24c28629171d300833
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3089
Optimality of the best value was proved YES
Number of terms in the objective function 33
Biggest coefficient in the objective function 517
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 7276
Number of bits of the sum of numbers in the objective function 13
Biggest number in a constraint 1656
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 7276
Number of bits of the biggest sum of numbers13
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.075988
Number of variables33
Total number of constraints48
Number of constraints which are clauses1
Number of constraints which are cardinality constraints (but not clauses)36
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint1
Maximum length of a constraint19

Trace number 4506

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-19 18:05:45 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2995 boxname=wulflinc28 idbench=651 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  ac34ff6897914e24c28629171d300833  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-p0033.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-p0033.opb
IDLAUNCH: 2995
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.077
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		: 451.077
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:        840480 kB
Buffers:         35696 kB
Cached:         130072 kB
SwapCached:        696 kB
Active:          75260 kB
Inactive:        93032 kB
HighTotal:      131008 kB
HighFree:        35028 kB
LowTotal:       903652 kB
LowFree:        805452 kB
SwapTotal:     2097640 kB
SwapFree:      2096372 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5816 kB
Slab:            20248 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 18:05:46 (client local time) WITH STATUS 30 IN 0.905862 SECONDS
stats: 2995 0 0.905862 30

Solver Data

c Parsing PB file...
c Converting 15 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: #
c   -- Clauses(.)/Splits(s): .....
c ---[  14]---> BDD-cost:    5
c ---[  13]---> BDD-cost:    3
c ---[  11]---> BDD-cost:    7
c ---[   8]---> Sorter-cost:  519     Base: 2 2 2 5 2
c ---[   6]---> BDD-cost:   13
c ---[   5]---> BDD-cost:   37
c ---[   4]---> BDD-cost:    6
c ---[   3]---> BDD-cost:   20
c ---[   1]---> BDD-cost:    6
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |    1440     3504 |     480       0        0     nan |  0.000 % |
c ==============================================================================
c Found solution: 3660
c ---[   0]---> Sorter-cost: 3125     Base: 3 2 2 13 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |        13 |    8945    21064 |    2981      12       44     3.7 |  0.000 % |
c ==============================================================================
c Found solution: 3453
c ---[   0]---> Sorter-cost:    7     Base: 3 2 2 13 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |        36 |    9107    21479 |    3035      35      678    19.4 |  0.000 % |
c ==============================================================================
c Found solution: 3424
c ---[   0]---> Sorter-cost:    7     Base: 3 2 2 13 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |        80 |    9205    21727 |    3068      78      948    12.2 |  0.000 % |
c ==============================================================================
c Found solution: 3354
c ---[   0]---> Sorter-cost:    6     Base: 3 2 2 13 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |        95 |    9243    21818 |    3081      93     1473    15.8 |  0.000 % |
c ==============================================================================
c Found solution: 3254
c ---[   0]---> Sorter-cost:    6     Base: 3 2 2 13 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       100 |    9288    21933 |    3096      98     1601    16.3 |  0.000 % |
c ==============================================================================
c Found solution: 3095
c ---[   0]---> Sorter-cost:    5     Base: 3 2 2 13 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       115 |    9305    21982 |    3101     113     1774    15.7 |  0.000 % |
c |       216 |    8685    20555 |    3411     133     1936    14.6 |  6.064 % |
c |       366 |    8531    20212 |    3752     278     4774    17.2 |  7.306 % |
c ==============================================================================
c Found solution: 3089
c ---[   0]---> Sorter-cost: 2210     Base: 3 2 5 5 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       394 |   13774    32465 |    4591     302     5124    17.0 |  7.306 % |
c ==============================================================================
c Optimal solution: 3089
s OPTIMUM FOUND
v C157_bit0 -C158_bit0 -C159_bit0 -C160_bit0 -C161_bit0 -C162_bit0 C163_bit0 C164_bit0 -C165_bit0 C166_bit0 -C167_bit0 -C168_bit0 -C169_bit0 C170_bit0 -C171_bit0 -C172_bit0 -C173_bit0 -C174_bit0 C175_bit0 C176_bit0 -C177_bit0 C178_bit0 -C179_bit0 C180_bit0 C181_bit0 C182_bit0 C183_bit0 C184_bit0 C185_bit0 C186_bit0 -C187_bit0 -C188_bit0 -C189_bit0
c _______________________________________________________________________________
c 
c restarts              : 10
c conflicts             : 481            (564 /sec)
c decisions             : 1787           (2095 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 0.85287 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/11560/stat): 11560 (minisat+_script) R 11559 11560 20115 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1851932027 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/11560/statm): 174 3 169 147 0 27 0
[pid=11560] 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=11561
New process pid=11562
New process pid=11563
execve syscall for /bin/sed executable
One traced child (pid=11562) 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=11563) exited with status: 0
One traced child (pid=11561) exited with status: 0
New process pid=11564
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-p0033.opb
One traced child (pid=11564) exited with status: 30
One traced child (pid=11560) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.952785
CPU time (s): 0.905862
CPU user time (s): 0.859869
CPU system time (s): 0.045993
CPU usage (%): 95.0752
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	3089