Trace number 1523812

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 into four (or five) parts:
  1. 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 ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. 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.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. 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 X seconds (see the parameters in the trace). 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 X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    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.
  5. 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 provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
NCVWr 2009-03-22SAT 0.030995 0.0328049

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/420/
unif-k3-r4.25-v420-c1785-S311671104-045.cnf
MD5SUMb892d03833c64865c28a6c109f19fcb2
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.012997
Satisfiable
(Un)Satisfiability was proved
Number of variables420
Number of clauses1785
Sum of the clauses size5355
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31785
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.03	c try 1 flip j 16444
0.00/0.03	c A solution is found
0.00/0.03	s SATISFIABLE
0.00/0.03	v -1 -2 -3 4 5 -6 -7 -8 -9 -10 -11 -12 -13 14 15 16 -17 -18 19 -20 -21 22 23 24 -25 26 27 -28 -29 -30 31 -32 -33 34 -35 36 -37 38 -39 -40 -41 -42 43 -44 45 46 47 -48 -49 50 51 52 53 54 55 -56 57 58 59 60 -61 -62 -63 64 65 66 67 68 -69 -70 -71 72 -73 -74 75 -76 77 -78 -79 -80 -81 -82 -83 -84 85 -86 87 88 89 -90 -91 -92 93 94 -95 -96 97 -98 -99 -100 101 -102 103 104 105 106 107 -108 109 110 111 -112 -113 114 -115 -116 -117 118 119 -120 -121 122 123 -124 -125 -126 -127 -128 -129 130 131 -132 133 134 -135 -136 -137 -138 -139 -140 141 -142 -143 -144 -145 -146 147 148 -149 150 151 -152 -153 154 -155 156 -157 158 159 -160 -161 162 163 164 -165 -166 -167 168 169 -170 171 -172 -173 174 175 -176 -177 178 -179 180 181 182 183 -184 -185 -186 -187 -188 189 190 -191 192 193 -194 195 -196 -197 198 199 200 201 -202 -203 204 205 -206 207 208 -209 210 -211 212 213 214 215 216 217 -218 219 -220 -221 -222 -223 -224 -225 -226 227 228 -229 -230 -231 -232 233 234 -235 -236 -237 -238 -239 -240 -241 -242 -243 -244 245 246 247 -248 249 250 251 252 253 254 255 256 -257 258 259 -260 -261 262 -263 -264 -265 -266 267 -268 -269 270 271 -272 -273 274 275 276 277 278 279 -280 281 282 283 284 285 -286 287 288 -289 290 -291 292 -293 294 -295 296 -297 -298 299 -300 -301 -302 303 304 305 -306 307 308 -309 -310 311 -312 -313 -314 315 316 317 -318 319 -320 321 -322 -323 -324 325 326 327 328 329 330 -331 332 -333 -334 -335 -336 -337 338 -339 -340 -341 -342 343 344 345 -346 -347 348 -349 -350 -351 -352 353 354 355 -356 357 358 359 360 361 -362 -363 364 -365 -366 -367 368 369 370 371 -372 373 -374 375 376 377 -378 -379 -380 -381 382 -383 -384 385 -386 387 -388 -389 -390 -391 392 393 394 395 396 -397 398 -399 -400 -401 402 403 -404 405 406 407 -408 409 410 411 -412 413 -414 -415 -416 -417 -418 -419 420 
0.00/0.03	v 0 
0.00/0.03	c Done (mycputime is 0.030 seconds)

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1523812-1238575049/watcher-1523812-1238575049 -o /tmp/evaluation-result-1523812-1238575049/solver-1523812-1238575049 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523812-1238575049.cnf 32529746 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.12 1.93 1.46 2/73 31700
/proc/meminfo: memFree=1455744/2055920 swapFree=4170060/4192956
[pid=31700] ppid=31698 vsize=411880 CPUtime=0
/proc/31700/stat : 31700 (NCVWr) R 31698 31700 31240 0 -1 4194304 140 0 0 0 0 0 0 0 20 0 1 0 1130168844 421765120 124 1992294400 134512640 135113558 4294956208 18446744073709551615 134526504 0 0 4096 0 0 0 0 17 1 0 0
/proc/31700/statm: 102970 124 55 146 0 101845 0

Solver just ended. Dumping a history of the last processes samples

Child status: 10
Real time (s): 0.0328049
CPU time (s): 0.030995
CPU user time (s): 0.030995
CPU system time (s): 0
CPU usage (%): 94.4828
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.030995
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 217
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 2
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node80 at 2009-04-01 10:37:29
IDJOB=1523812
IDBENCH=70668
IDSOLVER=531
FILE ID=node80/1523812-1238575049
PBS_JOBID= 9062182
Free space on /tmp= 64800 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/420/unif-k3-r4.25-v420-c1785-S311671104-045.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523812-1238575049/watcher-1523812-1238575049 -o /tmp/evaluation-result-1523812-1238575049/solver-1523812-1238575049 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523812-1238575049.cnf 32529746

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= b892d03833c64865c28a6c109f19fcb2
RANDOM SEED=32529746

node80.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.263
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.263
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1456160 kB
Buffers:         91616 kB
Cached:         411500 kB
SwapCached:      14568 kB
Active:         238960 kB
Inactive:       280644 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1456160 kB
SwapTotal:     4192956 kB
SwapFree:      4170060 kB
Dirty:            4616 kB
Writeback:           0 kB
Mapped:          22020 kB
Slab:            65176 kB
Committed_AS:  2995668 kB
PageTables:       2008 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 64796 MiB
End job on node80 at 2009-04-01 10:37:29