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

Nameweb/www.ps.uni-sb.de/~walser/benchmarks/course-ass/normalized-ss97-6.opb
MD5SUM5d90b7cbb5bac2aa14257b9c5448f25d
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 304
Optimality of the best value was proved YES
Number of terms in the objective function 173
Biggest coefficient in the objective function 100
Number of bits for the biggest coefficient in the objective function 7
Sum of the numbers in the objective function 8448
Number of bits of the sum of numbers in the objective function 14
Biggest number in a constraint 100
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 8448
Number of bits of the biggest sum of numbers14
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark1.87471
Number of variables257
Total number of constraints353
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)353
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint44

Trace number 2105

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-18 18:04:19 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1557 boxname=wulflinc21 idbench=385 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  5d90b7cbb5bac2aa14257b9c5448f25d  /oldhome/oroussel/tmp/wulflinc21/normalized-ss97-6.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc21/normalized-ss97-6.opb
IDLAUNCH: 1557
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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		: 451.161
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:        894828 kB
Buffers:         35036 kB
Cached:          77208 kB
SwapCached:        908 kB
Active:          78828 kB
Inactive:        36064 kB
HighTotal:      131008 kB
HighFree:        57624 kB
LowTotal:       903652 kB
LowFree:        837204 kB
SwapTotal:     2097892 kB
SwapFree:      2096472 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5804 kB
Slab:            19268 kB
Committed_AS:    64332 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 18:04:21 (client local time) WITH STATUS 10 IN 1.23381 SECONDS
stats: 1557 0 1.23381 10

Solver Data

c Decisions:	17986
c Implications:	124951
c RUNTIME:	1.00085s
v v133 v177 -v217 v3 v179 v7 v8 -v96 v184 -v224 v185 -v225 -v10 -v98 v142 v186 -v226 v99 v12 v13 -v14 v58 -v103 -v60 -v104 v148 v229 v61 v19 -v107 -v108 v152 -v21 -v109 v153 -v110 v154 v111 v191 -v231 -v26 v70 v236 v117 v197 -v237 v198 -v238 v118 v199 -v239 v163 v120 v201 -v241 -v202 v242 v121 -v203 v243 -v123 v167 v205 -v245 v124 v246 -v37 -v125 v169 v207 -v247 v126 v248 v39 -v171 v249 -v212 v252 v129 -v213 v253 v130 -v214 v254 v131 -v215 v255 v132 v256 -v1 -v45 -v89 -v90 -v178 -v47 -v219 -v221 -v223 -v52 -v140 -v11 -v55 -v143 -v227 -v56 -v144 -v228 -v57 -v145 -v102 -v146 -v15 -v147 -v17 -v149 -v18 -v62 -v106 v150 -v151 -v65 -v23 -v67 -v155 -v24 -v68 -v112 v156 -v190 v230 -v158 -v232 -v233 -v234 -v235 -v29 -v73 -v161 -v30 -v74 -v162 -v75 -v119 -v240 -v32 -v76 -v164 -v33 -v165 -v34 -v78 -v244 -v79 -v80 -v168 -v81 -v38 -v82 -v170 -v83 -v127 -v41 -v85 -v173 -v42 -v86 -v174 -v43 -v87 -v175 -v176 -v216 one v2 v4 v5 v6 v9 -v16 -v20 -v22 -v25 -v27 -v28 -v31 -v35 -v36 -v40 -v44 -v46 -v48 -v49 -v50 -v51 -v53 -v54 v59 -v63 -v64 -v66 v69 v71 v72 -v77 v84 -v88 -v91 -v92 -v93 -v94 -v95 -v97 -v100 -v101 -v105 -v113 -v114 -v115 -v116 -v122 -v128 -v134 -v135 -v136 -v137 -v138 -v139 -v141 -v157 -v159 -v160 v166 -v172 -v180 v181 -v182 v183 v187 v188 -v189 v192 v193 v194 v195 -v196 v200 v204 -v206 -v208 -v209 -v210 -v211 v218 v220 v222 v250 v251 
s SATISFIABLE

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/30375/stat): 30375 (galena) R 30374 30375 20602 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1720541512 1015808 2 4294967295 134512640 135412752 3221224576 3221224576 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/30375/statm): 248 2 241 241 0 7 0
[pid=30375] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-ss97-6.opb
One traced child (pid=30375) exited with status: 10
All traced children have exited ! Game is over.

Child status: 10
Real time (s): 1.66931
CPU time (s): 1.23381
CPU user time (s): 1.00785
CPU system time (s): 0.225965
CPU usage (%): 73.9114
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	304