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-aim-50-6_0-yes1-3.opb
MD5SUM5cc087b54d6422e56631b84bd18b2ba0
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 50
Optimality of the best value was proved YES
Number of terms in the objective function 100
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 100
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 2
Number of bits of the biggest number in a constraint 2
Biggest sum of numbers in a constraint 100
Number of bits of the biggest sum of numbers7
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.020996
Number of variables100
Total number of constraints350
Number of constraints which are clauses347
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints3
Minimum length of a constraint2
Maximum length of a constraint3

Trace number 9562

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-23 14:23:57 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8321 boxname=wulflinc25 idbench=117 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  5cc087b54d6422e56631b84bd18b2ba0  /oldhome/oroussel/tmp/wulflinc25/normalized-aim-50-6_0-yes1-3.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc25/normalized-aim-50-6_0-yes1-3.opb
IDLAUNCH: 8321
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.002
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		: 451.002
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:        929328 kB
Buffers:         16580 kB
Cached:          69576 kB
SwapCached:          0 kB
Active:          44468 kB
Inactive:        44604 kB
HighTotal:      131008 kB
HighFree:        57540 kB
LowTotal:       903652 kB
LowFree:        871788 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10684 kB
Committed_AS:    63656 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 14:23:58 (client local time) WITH STATUS 30 IN 0.32295 SECONDS
stats: 8321 0 0.32295 30

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 50
c small objective detected
c CONFLICT during preprocess 
c [startup+0.192189 s]  setting bit 6 to 0
c [startup+0.215391 s]  setting bit 5 to 0
c CONFLICT during preprocess 
c [startup+0.235023 s]  setting bit 4 to 0
c CONFLICT during preprocess 
c [startup+0.253175 s]  setting bit 3 to 0
c CONFLICT during preprocess 
c [startup+0.270924 s]  setting bit 2 to 0
c CONFLICT during preprocess 
c [startup+0.28864 s]  setting bit 1 to 0
c CONFLICT during preprocess 
c [startup+0.30639 s]  setting bit 0 to 0
c CONFLICT during preprocess 
s OPTIMUM FOUND
v -x1 x10 -x100 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 -x86 x87 -x88 -x89 -x9 x90 x91 -x92 -x93 x94 x95 -x96 x97 -x98 x99

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/6668/stat): 6668 (pb2sat) R 6667 6668 4004 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 20846739 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/6668/statm): 373 2 364 364 0 9 0
[pid=6668] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-aim-50-6_0-yes1-3.opb
One traced child (pid=6668) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.33385
CPU time (s): 0.32295
CPU user time (s): 0.303953
CPU system time (s): 0.018997
CPU usage (%): 96.7351
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	50