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/een/normalized-pk1.opb
MD5SUMfe0e5f3c1b66147fb7b1ccf35b46b343
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 0
Optimality of the best value was proved YES
Number of terms in the objective function 1
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 1
Number of bits of the sum of numbers in the objective function 1
Biggest number in a constraint 1055
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 2852
Number of bits of the biggest sum of numbers12
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.027995
Number of variables86
Total number of constraints60
Number of constraints which are clauses30
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints30
Minimum length of a constraint2
Maximum length of a constraint57

Trace number 9734

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-23 15:17:17 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8493 boxname=wulflinc18 idbench=289 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  fe0e5f3c1b66147fb7b1ccf35b46b343  /oldhome/oroussel/tmp/wulflinc18/normalized-pk1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc18/normalized-pk1.opb
IDLAUNCH: 8493
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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:        938564 kB
Buffers:         14416 kB
Cached:          62424 kB
SwapCached:          0 kB
Active:          45132 kB
Inactive:        34552 kB
HighTotal:      131008 kB
HighFree:        64344 kB
LowTotal:       903652 kB
LowFree:        874220 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:            10856 kB
Committed_AS:    63620 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 15:17:44 (client local time) WITH STATUS 30 IN 26.336 SECONDS
stats: 8493 0 26.336 30

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 1
c small objective detected
c CONFLICT during preprocess 
c [startup+23.3673 s]  setting bit 0 to 0
c got solution with objective value: 0
s OPTIMUM FOUND
v -x0 x1 -x10 -x11 x12 -x13 x14 -x15 -x16 -x17 -x18 x19 x2 x20 -x21 -x22 -x23 -x24 x25 -x26 -x27 -x28 x29 -x3 -x30 x31 -x32 x33 -x34 -x35 x36 x37 -x38 -x39 x4 x40 -x41 x42 -x43 -x44 x45 -x46 -x47 x48 -x49 -x5 x50 -x51 x52 x53 -x54 -x55 -x56 -x57 -x58 -x59 -x6 -x60 -x61 -x62 -x63 -x64 -x65 -x66 -x67 -x68 -x69 x7 -x70 -x71 -x72 -x73 -x74 -x75 -x76 -x77 -x78 -x79 -x8 -x80 -x81 -x82 -x83 -x84 -x85 -x9

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/6613/stat): 6613 (pb2sat) R 6612 6613 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21203021 1527808 2 4294967295 134512640 135987407 3221224576 3221224576 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/6613/statm): 373 2 364 364 0 9 0
[pid=6613] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-pk1.opb

[startup+10.0017 s]
Raw data (loadavg): 0.93 0.97 0.99 2/55 6613
Raw data (/proc/6613/stat): 6613 (pb2sat) R 6612 6613 4060 0 -1 0 28252 0 0 0 935 62 0 0 25 0 1 0 21203021 80572416 17094 4294967295 134512640 135987407 3221224576 3221206112 134856467 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/6613/statm): 19671 17094 364 364 0 19307 0
[pid=6613] vsize: 78684
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 78684

[startup+20.0026 s]
Raw data (loadavg): 0.94 0.97 0.99 2/55 6613
Raw data (/proc/6613/stat): 6613 (pb2sat) R 6612 6613 4060 0 -1 0 55846 0 0 0 1873 122 0 0 25 0 1 0 21203021 160817152 32632 4294967295 134512640 135987407 3221224576 3221223424 134817687 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/6613/statm): 39262 32632 364 364 0 38898 0
[pid=6613] vsize: 157048
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 157048
One traced child (pid=6613) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 26.3907
CPU time (s): 26.336
CPU user time (s): 24.9332
CPU system time (s): 1.40279
CPU usage (%): 99.7926
Max. virtual memory (cumulated for all children) (Kb): 157048

Verifier Data

Verifier:	OK	0