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/miplib2003/normalized-mps-v2-20-10-momentum2.opb
MD5SUM46da43c96f006f296bc8287cf17c977a
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 24130
Biggest coefficient in the objective function 655360000
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 3638660312
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint 1024000000000000013606456393728
Number of bits of the biggest number in a constraint 100
Biggest sum of numbers in a constraint 3743132712137090149495810818048
Number of bits of the biggest sum of numbers102
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark137.696
Number of variables25930
Total number of constraints27909
Number of constraints which are clauses10362
Number of constraints which are cardinality constraints (but not clauses)1921
Number of constraints which are nor clauses,nor cardinality constraints15626
Minimum length of a constraint1
Maximum length of a constraint913

Trace number 3990

Launcher Data

LAUNCH ON wulflinc29 THE 2005-09-19 04:44:22 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4096 boxname=wulflinc29 idbench=580 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  46da43c96f006f296bc8287cf17c977a  /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-momentum2.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-momentum2.opb
IDLAUNCH: 4096
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.020
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		: 451.020
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:        822428 kB
Buffers:         34588 kB
Cached:         147744 kB
SwapCached:        792 kB
Active:         137572 kB
Inactive:        47504 kB
HighTotal:      131008 kB
HighFree:         3864 kB
LowTotal:       903652 kB
LowFree:        818564 kB
SwapTotal:     2097892 kB
SwapFree:      2096664 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5740 kB
Slab:            21516 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 04:45:29 (client local time) WITH STATUS 0 IN 64.2872 SECONDS
stats: 4096 7 64.2872 0

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-momentum2.opb ......
PBS4: pbs_dbase.cpp:355: void CDatabase::setMultipleWatch(PBClause*): Assertion `current_term->get_coeff() >0' failed.

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/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1847102197 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/27827/statm): 239 2 232 232 0 7 0
[pid=27827] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-momentum2.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-momentum2.opb

[startup+10.0029 s]
Raw data (loadavg): 0.95 0.96 0.98 2/56 27827
Raw data (/proc/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 1485 0 0 0 995 3 0 0 25 0 1 0 1847102197 7024640 1435 4294967295 134512640 135450776 3221224560 3221223072 134601023 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/27827/statm): 1715 1435 232 232 0 1483 0
[pid=27827] vsize: 6860
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 6860

[startup+20.0037 s]
Raw data (loadavg): 0.96 0.96 0.98 2/56 27827
Raw data (/proc/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 1485 0 0 0 1995 4 0 0 25 0 1 0 1847102197 7024640 1435 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/27827/statm): 1715 1435 232 232 0 1483 0
[pid=27827] vsize: 6860
Current children cumulated CPU time (s) 19.99
Current children cumulated vsize (Kb) 6860

[startup+30.0045 s]
Raw data (loadavg): 0.96 0.96 0.98 2/56 27827
Raw data (/proc/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 3042 0 0 0 2990 8 0 0 25 0 1 0 1847102197 8179712 1724 4294967295 134512640 135450776 3221224560 3221223104 134675491 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/27827/statm): 1997 1724 232 232 0 1765 0
[pid=27827] vsize: 7988
Current children cumulated CPU time (s) 29.98
Current children cumulated vsize (Kb) 7988

[startup+40.0053 s]
Raw data (loadavg): 0.97 0.96 0.98 2/56 27827
Raw data (/proc/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 4432 0 0 0 3978 16 0 0 25 0 1 0 1847102197 13127680 2954 4294967295 134512640 135450776 3221224560 3221223072 134600032 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/27827/statm): 3205 2954 232 232 0 2973 0
[pid=27827] vsize: 12820
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 12820

[startup+50.0051 s]
Raw data (loadavg): 0.97 0.96 0.98 2/56 27827
Raw data (/proc/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 4938 0 0 0 4969 24 0 0 25 0 1 0 1847102197 15147008 3460 4294967295 134512640 135450776 3221224560 3221223132 134846985 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/27827/statm): 3698 3460 232 232 0 3466 0
[pid=27827] vsize: 14792
Current children cumulated CPU time (s) 49.93
Current children cumulated vsize (Kb) 14792

[startup+60.0059 s]
Raw data (loadavg): 0.98 0.96 0.98 2/56 27827
Raw data (/proc/27827/stat): 27827 (PBS4) R 27826 27827 19818 0 -1 0 5517 0 0 0 5961 29 0 0 25 0 1 0 1847102197 17457152 4039 4294967295 134512640 135450776 3221224560 3221222932 134524473 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/27827/statm): 4262 4039 232 232 0 4030 0
[pid=27827] vsize: 17048
Current children cumulated CPU time (s) 59.9
Current children cumulated vsize (Kb) 17048
One traced child (pid=27827) ended because it received signal 6 (SIGABRT)
All traced children have exited ! Game is over.

Child ended because it received signal 6 (SIGABRT)
Real time (s): 64.3922
CPU time (s): 64.2872
CPU user time (s): 63.9623
CPU system time (s): 0.32495
CPU usage (%): 99.8369
Max. virtual memory (cumulated for all children) (Kb): 17048

Verifier Data

ERROR: no interpretation found !