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

Namesubmitted/manquinho/primes-dimacs-cnf/normalized-ssa6288-047.opb
MD5SUM9adce8cbe88d8b4cea00449510319da7
Bench Categoryoptimization, small integers (OPTSMALLINT)
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 20820
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 20820
Number of bits of the sum of numbers in the objective function 15
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 20820
Number of bits of the biggest sum of numbers15
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.27281
Number of variables20820
Total number of constraints44648
Number of constraints which are clauses44648
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint6

Trace number 9651

Launcher Data

LAUNCH ON wulflinc11 THE 2005-09-23 14:59:11 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8414 boxname=wulflinc11 idbench=210 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  9adce8cbe88d8b4cea00449510319da7  /oldhome/oroussel/tmp/wulflinc11/normalized-ssa6288-047.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc11/normalized-ssa6288-047.opb
IDLAUNCH: 8414
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.045
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		: 451.045
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:        909976 kB
Buffers:         14300 kB
Cached:          85184 kB
SwapCached:          0 kB
Active:          63788 kB
Inactive:        45280 kB
HighTotal:      131008 kB
HighFree:        43484 kB
LowTotal:       903652 kB
LowFree:        866492 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10060 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 14:59:22 (client local time) WITH STATUS 20 IN 10.5384 SECONDS
stats: 8414 7 10.5384 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c CONFLICT during preprocess 
s UNSATISFIABLE

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/7247/stat): 7247 (pb2sat) R 7246 7247 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21094171 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7247/statm): 373 2 364 364 0 9 0
[pid=7247] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc11/normalized-ssa6288-047.opb

[startup+10.0018 s]
Raw data (loadavg): 0.82 0.91 0.95 2/55 7247
Raw data (/proc/7247/stat): 7247 (pb2sat) R 7246 7247 4060 0 -1 0 3348 0 0 0 989 9 0 0 25 0 1 0 21094171 12754944 2316 4294967295 134512640 135987407 3221224560 3221221996 134614938 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7247/statm): 3114 2316 364 364 0 2750 0
[pid=7247] vsize: 12456
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 12456
One traced child (pid=7247) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 10.5489
CPU time (s): 10.5384
CPU user time (s): 10.4274
CPU system time (s): 0.110983
CPU usage (%): 99.9007
Max. virtual memory (cumulated for all children) (Kb): 12456

Verifier Data

ERROR: no interpretation found !