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-100-2_0-yes1-2.opb
MD5SUM11cced9b162950d7fcb271e3d00b4bf2
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 100
Optimality of the best value was proved YES
Number of terms in the objective function 200
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 200
Number of bits of the sum of numbers in the objective function 8
Biggest number in a constraint 2
Number of bits of the biggest number in a constraint 2
Biggest sum of numbers in a constraint 200
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 benchmark0.026995
Number of variables200
Total number of constraints300
Number of constraints which are clauses298
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints2
Minimum length of a constraint2
Maximum length of a constraint3

Trace number 9519

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-23 14:22:39 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8283 boxname=wulflinc9 idbench=79 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  11cced9b162950d7fcb271e3d00b4bf2  /oldhome/oroussel/tmp/wulflinc9/normalized-aim-100-2_0-yes1-2.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc9/normalized-aim-100-2_0-yes1-2.opb
IDLAUNCH: 8283
/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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        918416 kB
Buffers:         11672 kB
Cached:          87404 kB
SwapCached:          0 kB
Active:          51532 kB
Inactive:        50444 kB
HighTotal:      131008 kB
HighFree:        40460 kB
LowTotal:       903652 kB
LowFree:        877956 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8616 kB
Committed_AS:    63644 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 14:22:40 (client local time) WITH STATUS 30 IN 1.37479 SECONDS
stats: 8283 0 1.37479 30

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 100
c small objective detected
c CONFLICT during preprocess 
c [startup+0.721149 s]  setting bit 7 to 0
c CONFLICT during preprocess 
c [startup+0.800314 s]  setting bit 6 to 0
c [startup+0.891143 s]  setting bit 5 to 0
c [startup+0.978436 s]  setting bit 4 to 0
c CONFLICT during preprocess 
c [startup+1.05958 s]  setting bit 3 to 0
c CONFLICT during preprocess 
c [startup+1.13867 s]  setting bit 2 to 0
c CONFLICT during preprocess 
c [startup+1.21769 s]  setting bit 1 to 0
c CONFLICT during preprocess 
c [startup+1.29723 s]  setting bit 0 to 0
c CONFLICT during preprocess 
s OPTIMUM FOUND
v x1 -x10 -x100 -x101 x102 -x103 x104 x105 -x106 x107 -x108 -x109 -x11 x110 x111 -x112 x113 -x114 -x115 x116 -x117 x118 x119 x12 -x120 x121 -x122 -x123 x124 -x125 x126 x127 -x128 x129 -x13 -x130 -x131 x132 x133 -x134 x135 -x136 x137 -x138 -x139 x14 x140 x141 -x142 x143 -x144 x145 -x146 x147 -x148 -x149 -x15 x150 x151 -x152 x153 -x154 x155 -x156 -x157 x158 -x159 x16 x160 -x161 x162 -x163 x164 -x165 x166 x167 -x168 -x169 -x17 x170 x171 -x172 x173 -x174 x175 -x176 -x177 x178 -x179 x18 x180 -x181 x182 -x183 x184 x185 -x186 x187 -x188 x189 -x19 -x190 -x191 x192 x193 -x194 -x195 x196 x197 -x198 x199 -x2 x20 -x200 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/7173/stat): 7173 (pb2sat) R 7172 7173 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 20877281 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7173/statm): 373 2 364 364 0 9 0
[pid=7173] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-aim-100-2_0-yes1-2.opb
One traced child (pid=7173) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 1.38921
CPU time (s): 1.37479
CPU user time (s): 1.3058
CPU system time (s): 0.068989
CPU usage (%): 98.9619
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	100