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-qiu.opb
MD5SUM9029e59d305ed70ef352ded3c086e2a0
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 7968
Biggest coefficient in the objective function 9098351345664
Number of bits for the biggest coefficient in the objective function 44
Sum of the numbers in the objective function 4803935111035752
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 9098351345664
Number of bits of the biggest number in a constraint 44
Biggest sum of numbers in a constraint 4803935111035752
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables23808
Total number of constraints1240
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints1192
Minimum length of a constraint1
Maximum length of a constraint5940

Trace number 3809

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-19 03:05:02 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1766 boxname=wulflinc30 idbench=594 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  9029e59d305ed70ef352ded3c086e2a0  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-qiu.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-qiu.opb
IDLAUNCH: 1766
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        902748 kB
Buffers:         32112 kB
Cached:          69312 kB
SwapCached:        780 kB
Active:          46864 kB
Inactive:        57144 kB
HighTotal:      131008 kB
HighFree:        58688 kB
LowTotal:       903652 kB
LowFree:        844060 kB
SwapTotal:     2097892 kB
SwapFree:      2096636 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            22124 kB
Committed_AS:    64172 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:05:02 (client local time) WITH STATUS 0 IN 0.031994 SECONDS
stats: 1766 7 0.031994 0

Solver Data



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/18621/stat): 18621 (galena) R 18620 18621 5245 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1846503845 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18621/statm): 248 2 241 241 0 7 0
[pid=18621] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-qiu.opb
One traced child (pid=18621) 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): 0.036764
CPU time (s): 0.031994
CPU user time (s): 0.028995
CPU system time (s): 0.002999
CPU usage (%): 87.0253
Max. virtual memory (cumulated for all children) (Kb): 0



Verifier Data




ERROR: no interpretation found !