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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos4.opb
MD5SUMe465af1c9ec9e748a7782ddbee36d3b1
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 100590
Biggest coefficient in the objective function 11202704073084108800000000
Number of bits for the biggest coefficient in the objective function 84
Sum of the numbers in the objective function 2862789126208280618841669632
Number of bits of the sum of numbers in the objective function 92
Biggest number in a constraint 11202704073084108800000000
Number of bits of the biggest number in a constraint 84
Biggest sum of numbers in a constraint 2862789126208280618841669632
Number of bits of the biggest sum of numbers92
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark36.5274
Number of variables203044
Total number of constraints56505
Number of constraints which are clauses32142
Number of constraints which are cardinality constraints (but not clauses)17175
Number of constraints which are nor clauses,nor cardinality constraints7188
Minimum length of a constraint1
Maximum length of a constraint1115

Trace number 5884

Launcher Data

LAUNCH ON wulflinc20 THE 2005-09-20 01:45:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3074 boxname=wulflinc20 idbench=730 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  e465af1c9ec9e748a7782ddbee36d3b1  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-neos4.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-neos4.opb
IDLAUNCH: 3074
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.215
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		: 451.215
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:        890012 kB
Buffers:         11888 kB
Cached:         102164 kB
SwapCached:        800 kB
Active:          46704 kB
Inactive:        70028 kB
HighTotal:      131008 kB
HighFree:        25088 kB
LowTotal:       903652 kB
LowFree:        864924 kB
SwapTotal:     2097892 kB
SwapFree:      2096636 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5736 kB
Slab:            22028 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 01:46:07 (client local time) WITH STATUS 20 IN 38.1912 SECONDS
stats: 3074 7 38.1912 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 22888] 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              : 37.2213 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/27286/stat): 27286 (minisat+_script) R 27285 27286 2660 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1854680048 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/27286/statm): 174 3 169 147 0 27 0
[pid=27286] 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=27287
New process pid=27288
New process pid=27289
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
One traced child (pid=27288) exited with status: 0
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=27289) exited with status: 0
One traced child (pid=27287) exited with status: 0
New process pid=27290
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-neos4.opb
One traced child (pid=27290) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=27291
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-neos4.opb

[startup+10.0034 s]
Raw data (loadavg): 0.94 0.97 0.93 2/57 27291
Raw data (/proc/27286/stat): 27286 (minisat+_script) S 27285 27286 2660 0 -1 0 314 331 0 0 0 1 3 3 18 0 1 0 1854680048 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/27286/statm): 532 234 485 147 0 385 0
[pid=27286] vsize: 2128
Raw data (/proc/27291/stat): 27291 (minisat+_bignum) R 27286 27286 2660 0 -1 0 6042 0 0 0 923 34 0 0 25 0 1 0 1854680062 23867392 5540 4294967295 134512640 135167914 3221224448 3221222768 134694444 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/27291/statm): 5827 5540 162 162 0 5665 0
[pid=27291] vsize: 23308
Current children cumulated CPU time (s) 9.64
Current children cumulated vsize (Kb) 25436

[startup+20.0051 s]
Raw data (loadavg): 0.95 0.97 0.93 2/57 27291
Raw data (/proc/27286/stat): 27286 (minisat+_script) S 27285 27286 2660 0 -1 0 314 331 0 0 0 1 3 3 18 0 1 0 1854680048 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/27286/statm): 532 234 485 147 0 385 0
[pid=27286] vsize: 2128
Raw data (/proc/27291/stat): 27291 (minisat+_bignum) R 27286 27286 2660 0 -1 0 9063 0 0 0 1894 47 0 0 25 0 1 0 1854680062 42713088 8521 4294967295 134512640 135167914 3221224448 3221222800 134849143 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/27291/statm): 10428 8521 162 162 0 10266 0
[pid=27291] vsize: 41712
Current children cumulated CPU time (s) 19.48
Current children cumulated vsize (Kb) 43840

[startup+30.0059 s]
Raw data (loadavg): 0.96 0.97 0.93 2/57 27291
Raw data (/proc/27286/stat): 27286 (minisat+_script) S 27285 27286 2660 0 -1 0 314 331 0 0 0 1 3 3 18 0 1 0 1854680048 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/27286/statm): 532 234 485 147 0 385 0
[pid=27286] vsize: 2128
Raw data (/proc/27291/stat): 27291 (minisat+_bignum) R 27286 27286 2660 0 -1 0 12819 0 0 0 2857 67 0 0 25 0 1 0 1854680062 55513088 11907 4294967295 134512640 135167914 3221224448 3221222864 134849153 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/27291/statm): 13553 11907 162 162 0 13391 0
[pid=27291] vsize: 54212
Current children cumulated CPU time (s) 29.31
Current children cumulated vsize (Kb) 56340
One traced child (pid=27291) exited with status: 20
One traced child (pid=27286) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 39.0452
CPU time (s): 38.1912
CPU user time (s): 37.2593
CPU system time (s): 0.931858
CPU usage (%): 97.8128
Max. virtual memory (cumulated for all children) (Kb): 56340

Verifier Data

ERROR: no interpretation found !