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/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-fffff800.opb
MD5SUMebc468f65dc9d723d06e698aa1880f66
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 160
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 8388600
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 15728640000000000
Number of bits of the biggest number in a constraint 54
Biggest sum of numbers in a constraint 383727820204435150
Number of bits of the biggest sum of numbers59
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark12.4251
Number of variables17080
Total number of constraints524
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 constraints524
Minimum length of a constraint20
Maximum length of a constraint5020

Trace number 5487

Launcher Data

LAUNCH ON wulflinc8 THE 2005-09-20 01:18:04 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1982 boxname=wulflinc8 idbench=810 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  ebc468f65dc9d723d06e698aa1880f66  /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-13-7-fffff800.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-13-7-fffff800.opb
IDLAUNCH: 1982
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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		: 451.007
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:        906340 kB
Buffers:          4948 kB
Cached:          97584 kB
SwapCached:        760 kB
Active:          38216 kB
Inactive:        66980 kB
HighTotal:      131008 kB
HighFree:        33376 kB
LowTotal:       903652 kB
LowFree:        872964 kB
SwapTotal:     2097136 kB
SwapFree:      2095848 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5704 kB
Slab:            17412 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 01:18:05 (client local time) WITH STATUS 0 IN 0.597908 SECONDS
stats: 1982 7 0.597908 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/20406/stat): 20406 (galena) R 20405 20406 27660 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 1782722941 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/20406/statm): 248 2 241 241 0 7 0
[pid=20406] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-13-7-fffff800.opb
One traced child (pid=20406) 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): 0.607277
CPU time (s): 0.597908
CPU user time (s): 0.58891
CPU system time (s): 0.008998
CPU usage (%): 98.4572
Max. virtual memory (cumulated for all children) (Kb): 0



Verifier Data




ERROR: no interpretation found !