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-v2-13-7/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos4.opb
MD5SUM30059c64e21a2e364f81efb4e08403c5
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 78981
Biggest coefficient in the objective function 1400338009135513600000000
Number of bits for the biggest coefficient in the objective function 81
Sum of the numbers in the objective function 357842136202818385868750848
Number of bits of the sum of numbers in the objective function 89
Biggest number in a constraint 1400338009135513600000000
Number of bits of the biggest number in a constraint 81
Biggest sum of numbers in a constraint 357842136202818385868750848
Number of bits of the biggest sum of numbers89
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark21.7407
Number of variables151216
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 constraint752

Trace number 6265

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-20 05:20:21 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3459 boxname=wulflinc25 idbench=1115 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  30059c64e21a2e364f81efb4e08403c5  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-13-7-neos4.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-13-7-neos4.opb
IDLAUNCH: 3459
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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:        890968 kB
Buffers:         17892 kB
Cached:          97636 kB
SwapCached:        888 kB
Active:          34396 kB
Inactive:        83760 kB
HighTotal:      131008 kB
HighFree:        29876 kB
LowTotal:       903652 kB
LowFree:        861092 kB
SwapTotal:     2097892 kB
SwapFree:      2096524 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5728 kB
Slab:            19644 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 05:20:50 (client local time) WITH STATUS 20 IN 27.4938 SECONDS
stats: 3459 7 27.4938 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              : 26.7419 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/28182/stat): 28182 (minisat+_script) R 28181 28182 4419 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1855996839 712704 3 4294967295 134512640 135087896 3221224512 3221224512 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/28182/statm): 174 3 169 147 0 27 0
[pid=28182] 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=28183
New process pid=28184
New process pid=28185
execve syscall for /bin/sed executable
open syscall for file /etc/ld.so.preload
One traced child (pid=28184) exited with status: 0
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=28185) exited with status: 0
One traced child (pid=28183) exited with status: 0
New process pid=28186
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-13-7-neos4.opb
One traced child (pid=28186) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=28187
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-13-7-neos4.opb

[startup+10.0043 s]
Raw data (loadavg): 0.92 0.97 0.92 2/57 28187
Raw data (/proc/28182/stat): 28182 (minisat+_script) S 28181 28182 4419 0 -1 0 314 331 0 0 0 0 2 2 18 0 1 0 1855996839 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/28182/statm): 532 234 485 147 0 385 0
[pid=28182] vsize: 2128
Raw data (/proc/28187/stat): 28187 (minisat+_bignum) R 28182 28182 4419 0 -1 0 5486 0 0 0 930 28 0 0 25 0 1 0 1855996852 23060480 5026 4294967295 134512640 135167914 3221224448 3221220296 134845877 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/28187/statm): 5630 5026 162 162 0 5468 0
[pid=28187] vsize: 22520
Current children cumulated CPU time (s) 9.62
Current children cumulated vsize (Kb) 24648

[startup+20.0059 s]
Raw data (loadavg): 0.93 0.97 0.92 2/57 28187
Raw data (/proc/28182/stat): 28182 (minisat+_script) S 28181 28182 4419 0 -1 0 314 331 0 0 0 0 2 2 18 0 1 0 1855996839 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/28182/statm): 532 234 485 147 0 385 0
[pid=28182] vsize: 2128
Raw data (/proc/28187/stat): 28187 (minisat+_bignum) R 28182 28182 4419 0 -1 0 8902 0 0 0 1890 48 0 0 25 0 1 0 1855996852 44650496 8442 4294967295 134512640 135167914 3221224448 3221221552 134849163 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/28187/statm): 10901 8442 162 162 0 10739 0
[pid=28187] vsize: 43604
Current children cumulated CPU time (s) 19.42
Current children cumulated vsize (Kb) 45732
One traced child (pid=28187) exited with status: 20
One traced child (pid=28182) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 28.2281
CPU time (s): 27.4938
CPU user time (s): 26.7759
CPU system time (s): 0.71789
CPU usage (%): 97.3989
Max. virtual memory (cumulated for all children) (Kb): 45732

Verifier Data

ERROR: no interpretation found !