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-par8-2-c.opb
MD5SUM6426d07b9a45c1ddc8ddbec58612957d
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 68
Optimality of the best value was proved YES
Number of terms in the objective function 136
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 136
Number of bits of the sum of numbers in the objective function 8
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 136
Number of bits of the biggest sum of numbers8
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.023995
Number of variables136
Total number of constraints338
Number of constraints which are clauses338
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 constraint2
Maximum length of a constraint3

Trace number 208

Launcher Data

LAUNCH ON wulflinc1 THE 2005-09-18 08:55:38 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=200 boxname=wulflinc1 idbench=200 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  6426d07b9a45c1ddc8ddbec58612957d  /oldhome/oroussel/tmp/wulflinc1/normalized-par8-2-c.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc1/normalized-par8-2-c.opb
IDLAUNCH: 200
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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		: 451.053
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:        912020 kB
Buffers:         36816 kB
Cached:          56252 kB
SwapCached:        908 kB
Active:          81912 kB
Inactive:        13980 kB
HighTotal:      131008 kB
HighFree:        78680 kB
LowTotal:       903652 kB
LowFree:        833340 kB
SwapTotal:     2097136 kB
SwapFree:      2095620 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5992 kB
Slab:            20976 kB
Committed_AS:    93132 kB
PageTables:        344 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 08:55:38 (client local time) WITH STATUS 30 IN 0.12698 SECONDS
stats: 200 0 0.12698 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 136 variables and 338 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.09
c After prepocess the problem consists of 136 variables and 308 constraints.
c Initial Lower Bound: 0
c NEW SOLUTION FOUND: 68 @ 0.11 @ #Dec. 13
s OPTIMUM FOUND
v x1 -x2 -x3 x4 x5 -x6 -x7 x8 -x9 x10 -x11 x12 -x13 x14 -x15 x16 -x17 x18 -x19 x20 -x21 x22 -x23 x24 -x25 x26 -x27 x28 -x29 x30 -x31 x32 -x33 x34 -x35 x36 -x37 x38 -x39 x40 -x41 x42 -x43 x44 -x45 x46 -x47 x48 -x49 x50 -x51 x52 -x53 x54 -x55 x56 -x57 x58 -x59 x60 -x61 x62 x63 -x64 -x65 x66 -x67 x68 x69 -x70 x71 -x72 x73 -x74 -x75 x76 x77 -x78 -x79 x80 -x81 x82 x83 -x84 -x85 x86 -x87 x88 x89 -x90 -x91 x92 x93 -x94 -x95 x96 x97 -x98 -x99 x100 x101 -x102 x103 -x104 -x105 x106 x107 -x108 -x109 x110 x111 -x112 x113 -x114 -x115 x116 -x117 x118 x119 -x120 -x121 x122 x123 -x124 -x125 x126 -x127 x128 -x129 x130 x131 -x132 x133 -x134 -x135 x136 
c Cost: 68
c Exit Code: 30
c Total time: 0.112 s

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/18841/stat): 18841 (bsolo) R 18840 18841 17733 0 -1 0 19 0 0 0 0 0 0 0 21 0 1 0 1724895844 438272 3 4294967295 134512640 134736556 3221224576 3221224576 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/18841/statm): 107 3 90 68 0 39 0
[pid=18841] vsize: 428
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One traced child (pid=18841) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.180749
CPU time (s): 0.12698
CPU user time (s): 0.095985
CPU system time (s): 0.030995
CPU usage (%): 70.2521
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	68