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-rentacar.opb
MD5SUM7d26272ea1585b40e7b5583a6da2286f
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 5310
Biggest coefficient in the objective function 26843545600000
Number of bits for the biggest coefficient in the objective function 45
Sum of the numbers in the objective function 6957856676716407
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 26843545600000
Number of bits of the biggest number in a constraint 45
Biggest sum of numbers in a constraint 14026955228261965
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark14.4268
Number of variables264240
Total number of constraints6965
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)55
Number of constraints which are nor clauses,nor cardinality constraints6910
Minimum length of a constraint1
Maximum length of a constraint60540

Trace number 4517

Launcher Data

LAUNCH ON wulflinc31 THE 2005-09-19 18:08:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3005 boxname=wulflinc31 idbench=661 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  7d26272ea1585b40e7b5583a6da2286f  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-rentacar.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-rentacar.opb
IDLAUNCH: 3005
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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		: 451.153
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:        659916 kB
Buffers:         41108 kB
Cached:         300052 kB
SwapCached:       1016 kB
Active:         129020 kB
Inactive:       214896 kB
HighTotal:      131008 kB
HighFree:         2604 kB
LowTotal:       903652 kB
LowFree:        657312 kB
SwapTotal:     2097892 kB
SwapFree:      2096404 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5776 kB
Slab:            25136 kB
Committed_AS:    64340 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 18:08:45 (client local time) WITH STATUS 20 IN 14.4268 SECONDS
stats: 3005 7 14.4268 20

Solver Data

c Parsing PB file...
s UNSATISFIABLE
c _______________________________________________________________________________
c 
c restarts              : 0
c conflicts             : 0              (0 /sec)
c decisions             : 0              (0 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 13.163 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/26731/stat): 26731 (minisat+_script) R 26730 26731 9102 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1851897805 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/26731/statm): 174 3 169 147 0 27 0
[pid=26731] 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=26732
New process pid=26733
New process pid=26734
execve syscall for /bin/sed executable
One traced child (pid=26733) 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=26734) exited with status: 0
One traced child (pid=26732) exited with status: 0
New process pid=26735
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-rentacar.opb

[startup+10.0039 s]
Raw data (loadavg): 0.94 0.95 0.88 1/58 26735
Raw data (/proc/26731/stat): 26731 (minisat+_script) S 26730 26731 9102 0 -1 0 289 239 0 0 0 0 0 0 22 0 1 0 1851897805 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/26731/statm): 531 226 485 147 0 384 0
[pid=26731] vsize: 2124
Raw data (/proc/26735/stat): 26735 (minisat+_64-bit) T 26731 26731 9102 0 -1 0 17569 0 0 0 832 79 0 0 25 0 1 0 1851897810 73633792 16261 4294967295 134512640 135094434 3221224432 3221222700 134870330 0 0 5 16386 3222434794 0 0 17 1 0 0
Raw data (/proc/26735/statm): 17977 16261 145 145 0 17832 0
[pid=26735] vsize: 71908
Current children cumulated CPU time (s) 9.11
Current children cumulated vsize (Kb) 74032
One traced child (pid=26735) exited with status: 20
One traced child (pid=26731) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 15.6714
CPU time (s): 14.4268
CPU user time (s): 13.168
CPU system time (s): 1.25881
CPU usage (%): 92.0583
Max. virtual memory (cumulated for all children) (Kb): 74032

Verifier Data

ERROR: no interpretation found !