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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-pilot87.opb
MD5SUM867c3fb6ec2e95bf03283295db1251ec
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 11677
Biggest coefficient in the objective function 1769666112389120
Number of bits for the biggest coefficient in the objective function 51
Sum of the numbers in the objective function 75483970843122814
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 536870912000000000
Number of bits of the biggest number in a constraint 59
Biggest sum of numbers in a constraint 1323519003456940521
Number of bits of the biggest sum of numbers61
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark38.3472
Number of variables113921
Total number of constraints3645
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints3645
Minimum length of a constraint10
Maximum length of a constraint8647

Trace number 2659

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-18 20:40:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2835 boxname=wulflinc9 idbench=491 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  867c3fb6ec2e95bf03283295db1251ec  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-pilot87.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-pilot87.opb
IDLAUNCH: 2835
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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	: 2
cpu MHz		: 451.242
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:        872440 kB
Buffers:         30780 kB
Cached:         104584 kB
SwapCached:       1044 kB
Active:          86468 kB
Inactive:        51616 kB
HighTotal:      131008 kB
HighFree:        22848 kB
LowTotal:       903652 kB
LowFree:        849592 kB
SwapTotal:     2097136 kB
SwapFree:      2095568 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5660 kB
Slab:            18292 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 20:41:44 (client local time) WITH STATUS 20 IN 61.9646 SECONDS
stats: 2835 7 61.9646 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 4887] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
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              : 60.6208 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/9897/stat): 9897 (minisat+_script) R 9896 9897 30740 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1785982430 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9897/statm): 174 3 169 147 0 27 0
[pid=9897] 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=9898
New process pid=9899
New process pid=9900
One traced child (pid=9899) exited with status: 0
execve syscall for /bin/sed executable
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=9900) exited with status: 0
One traced child (pid=9898) exited with status: 0
New process pid=9901
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-pilot87.opb
One traced child (pid=9901) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=9902
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-pilot87.opb

[startup+10.0042 s]
Raw data (loadavg): 0.89 0.93 0.90 2/57 9902
Raw data (/proc/9897/stat): 9897 (minisat+_script) S 9896 9897 30740 0 -1 0 314 332 0 0 0 1 0 1 17 0 1 0 1785982430 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9897/statm): 532 234 485 147 0 385 0
[pid=9897] vsize: 2128
Raw data (/proc/9902/stat): 9902 (minisat+_bignum) R 9897 9897 30740 0 -1 0 5374 0 0 0 939 27 0 0 25 0 1 0 1785982438 18313216 4246 4294967295 134512640 135167914 3221224448 3221219256 134844633 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9902/statm): 4471 4246 162 162 0 4309 0
[pid=9902] vsize: 17884
Current children cumulated CPU time (s) 9.68
Current children cumulated vsize (Kb) 20012

[startup+20.005 s]
Raw data (loadavg): 0.91 0.93 0.90 2/57 9902
Raw data (/proc/9897/stat): 9897 (minisat+_script) S 9896 9897 30740 0 -1 0 314 332 0 0 0 1 0 1 17 0 1 0 1785982430 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9897/statm): 532 234 485 147 0 385 0
[pid=9897] vsize: 2128
Raw data (/proc/9902/stat): 9902 (minisat+_bignum) R 9897 9897 30740 0 -1 0 9554 0 0 0 1892 51 0 0 25 0 1 0 1785982438 29388800 5719 4294967295 134512640 135167914 3221224448 3221222544 134844644 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9902/statm): 7175 5719 162 162 0 7013 0
[pid=9902] vsize: 28700
Current children cumulated CPU time (s) 19.45
Current children cumulated vsize (Kb) 30828

[startup+30.0057 s]
Raw data (loadavg): 0.92 0.93 0.90 2/57 9902
Raw data (/proc/9897/stat): 9897 (minisat+_script) S 9896 9897 30740 0 -1 0 314 332 0 0 0 1 0 1 17 0 1 0 1785982430 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9897/statm): 532 234 485 147 0 385 0
[pid=9897] vsize: 2128
Raw data (/proc/9902/stat): 9902 (minisat+_bignum) R 9897 9897 30740 0 -1 0 11668 0 0 0 2859 66 0 0 25 0 1 0 1785982438 37654528 7833 4294967295 134512640 135167914 3221224448 3221223184 134522751 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9902/statm): 9193 7833 162 162 0 9031 0
[pid=9902] vsize: 36772
Current children cumulated CPU time (s) 29.27
Current children cumulated vsize (Kb) 38900

[startup+40.0065 s]
Raw data (loadavg): 0.93 0.94 0.91 2/57 9902
Raw data (/proc/9897/stat): 9897 (minisat+_script) S 9896 9897 30740 0 -1 0 314 332 0 0 0 1 0 1 17 0 1 0 1785982430 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9897/statm): 532 234 485 147 0 385 0
[pid=9897] vsize: 2128
Raw data (/proc/9902/stat): 9902 (minisat+_bignum) R 9897 9897 30740 0 -1 0 14561 0 0 0 3819 84 0 0 25 0 1 0 1785982438 47439872 10315 4294967295 134512640 135167914 3221224448 3221222832 134608714 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9902/statm): 11582 10315 162 162 0 11420 0
[pid=9902] vsize: 46328
Current children cumulated CPU time (s) 39.05
Current children cumulated vsize (Kb) 48456

[startup+50.0083 s]
Raw data (loadavg): 0.94 0.94 0.91 2/57 9902
Raw data (/proc/9897/stat): 9897 (minisat+_script) S 9896 9897 30740 0 -1 0 314 332 0 0 0 1 0 1 17 0 1 0 1785982430 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9897/statm): 532 234 485 147 0 385 0
[pid=9897] vsize: 2128
Raw data (/proc/9902/stat): 9902 (minisat+_bignum) T 9897 9897 30740 0 -1 0 17558 0 0 0 4779 103 0 0 25 0 1 0 1785982438 54915072 12142 4294967295 134512640 135167914 3221224448 3221223336 134865821 0 0 5 16386 3222434794 0 0 17 1 0 0
Raw data (/proc/9902/statm): 13407 12142 162 162 0 13245 0
[pid=9902] vsize: 53628
Current children cumulated CPU time (s) 48.84
Current children cumulated vsize (Kb) 55756

[startup+60.009 s]
Raw data (loadavg): 0.95 0.94 0.91 2/57 9902
Raw data (/proc/9897/stat): 9897 (minisat+_script) S 9896 9897 30740 0 -1 0 314 332 0 0 0 1 0 1 17 0 1 0 1785982430 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9897/statm): 532 234 485 147 0 385 0
[pid=9897] vsize: 2128
Raw data (/proc/9902/stat): 9902 (minisat+_bignum) R 9897 9897 30740 0 -1 0 19889 0 0 0 5745 120 0 0 25 0 1 0 1785982438 63016960 14294 4294967295 134512640 135167914 3221224448 3221222800 134844706 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9902/statm): 15385 14294 162 162 0 15223 0
[pid=9902] vsize: 61540
Current children cumulated CPU time (s) 58.67
Current children cumulated vsize (Kb) 63668
One traced child (pid=9902) exited with status: 20
One traced child (pid=9897) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 63.3668
CPU time (s): 61.9646
CPU user time (s): 60.6328
CPU system time (s): 1.3318
CPU usage (%): 97.7871
Max. virtual memory (cumulated for all children) (Kb): 63668

Verifier Data

ERROR: no interpretation found !