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-stein9.opb
MD5SUMd34c3da9b2eb4ae201c359b483f51b04
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 5
Optimality of the best value was proved YES
Number of terms in the objective function 9
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 9
Number of bits of the sum of numbers in the objective function 4
Biggest number in a constraint 4
Number of bits of the biggest number in a constraint 3
Biggest sum of numbers in a constraint 13
Number of bits of the biggest sum of numbers4
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.008997
Number of variables9
Total number of constraints22
Number of constraints which are clauses12
Number of constraints which are cardinality constraints (but not clauses)10
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint9

Trace number 3857

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-19 03:26:22 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2891 boxname=wulflinc17 idbench=547 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  d34c3da9b2eb4ae201c359b483f51b04  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-stein9.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-stein9.opb
IDLAUNCH: 2891
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        913872 kB
Buffers:         34768 kB
Cached:          59100 kB
SwapCached:        516 kB
Active:          56456 kB
Inactive:        39832 kB
HighTotal:      131008 kB
HighFree:        67928 kB
LowTotal:       903652 kB
LowFree:        845944 kB
SwapTotal:     2097892 kB
SwapFree:      2096672 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5680 kB
Slab:            18804 kB
Committed_AS:    64148 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:26:22 (client local time) WITH STATUS 30 IN 0.033993 SECONDS
stats: 2891 0 0.033993 30

Solver Data

c Parsing PB file...
c Converting 13 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): ............
c ---[   0]---> BDD-cost:   23
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |      68      198 |      22       0        0     nan |  0.000 % |
c ==============================================================================
c Found solution: 5
c ---[   0]---> BDD-cost:    5
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |     128      370 |      42       0        0     nan |  0.000 % |
c ==============================================================================
c Optimal solution: 5
s OPTIMUM FOUND
v -V0001_bit0 V0002_bit0 V0003_bit0 V0004_bit0 V0005_bit0 -V0006_bit0 -V0007_bit0 V0008_bit0 -V0009_bit0
c _______________________________________________________________________________
c 
c restarts              : 2
c conflicts             : 25             (6252 /sec)
c decisions             : 53             (13253 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 0.003999 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/30950/stat): 30950 (minisat+_script) R 30949 30950 19316 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1846669270 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/30950/statm): 174 3 169 147 0 27 0
[pid=30950] 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=30951
New process pid=30952
New process pid=30953
execve syscall for /bin/sed executable
One traced child (pid=30952) 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=30953) exited with status: 0
One traced child (pid=30951) exited with status: 0
New process pid=30954
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-stein9.opb
One traced child (pid=30954) exited with status: 30
One traced child (pid=30950) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.065875
CPU time (s): 0.033993
CPU user time (s): 0.006998
CPU system time (s): 0.026995
CPU usage (%): 51.6023
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	5