Trace number 298027

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, and are wall clock time (not CPU 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
saps 2007-02-08SAT 0.009997 0.0102911

General information on the benchmark

Namerandom/OnTreshold/3SAT/v450/
unif-k3-r4.25-v450-c1912-S1279599478-02.SAT.shuffled.cnf
MD5SUMb403a40368f0561878d5cbdd78a87179
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.008997
Satisfiable
(Un)Satisfiability was proved
Number of variables450
Number of clauses1912
Sum of the clauses size5736
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31912
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	c 
0.00/0.00	c UBCSAT version 1.1.0rr
0.00/0.00	c 
0.00/0.00	c http://www.satlib.org/ubcsat
0.00/0.00	c 
0.00/0.00	c ubcsat -h for help
0.00/0.00	c 
0.00/0.00	c  -runs 1 
0.00/0.00	c  -cutoff 4294967295 
0.00/0.00	c  -timeout 0.000000 
0.00/0.00	c  -gtimeout 0.000000 
0.00/0.00	c  -noimprove 0 
0.00/0.00	c  -target 0 
0.00/0.00	c  -wtarget 0.000000 
0.00/0.00	c  -seed 607360919 
0.00/0.00	c  -solve 0 
0.00/0.00	c  -find,-numsol 0 
0.00/0.00	c  -findunique 0 
0.00/0.00	c  -srestart 0 
0.00/0.00	c  -prestart 0.000000 
0.00/0.00	c  -drestart 0 
0.00/0.00	c 
0.00/0.00	c  -alpha 1.300000 
0.00/0.00	c  -rho 0.800000 
0.00/0.00	c  -ps 0.050000 
0.00/0.00	c  -wp 0.010000 
0.00/0.00	c  -sapsthresh -0.100000 
0.00/0.00	c 
0.00/0.00	s SATISFIABLE
0.00/0.00	v  1 2 -3 4 5 -6 -7 8 9 10
0.00/0.00	v  11 12 13 14 15 -16 -17 18 19 20
0.00/0.00	v  -21 22 -23 24 25 -26 -27 -28 29 -30
0.00/0.00	v  31 32 33 34 35 36 37 38 -39 -40
0.00/0.00	v  41 42 -43 44 45 46 -47 48 -49 -50
0.00/0.00	v  51 -52 53 54 55 -56 -57 58 -59 60
0.00/0.00	v  -61 -62 63 64 65 66 -67 68 -69 -70
0.00/0.00	v  -71 -72 -73 -74 -75 76 -77 78 -79 -80
0.00/0.00	v  -81 82 -83 -84 -85 -86 -87 88 89 90
0.00/0.00	v  -91 92 -93 94 -95 96 97 -98 99 -100
0.00/0.00	v  -101 102 -103 104 -105 -106 107 -108 109 -110
0.00/0.00	v  -111 -112 -113 -114 115 116 117 -118 -119 120
0.00/0.00	v  -121 -122 -123 -124 -125 -126 -127 128 -129 -130
0.00/0.00	v  131 -132 133 134 -135 -136 137 138 -139 -140
0.00/0.00	v  -141 -142 143 144 -145 146 147 -148 149 150
0.00/0.00	v  151 -152 -153 154 155 156 -157 -158 -159 -160
0.00/0.00	v  161 162 163 164 -165 166 167 168 169 -170
0.00/0.00	v  171 172 173 -174 175 -176 -177 178 -179 180
0.00/0.00	v  181 -182 183 184 185 186 -187 -188 -189 -190
0.00/0.00	v  191 -192 193 194 -195 -196 -197 -198 199 200
0.00/0.00	v  -201 202 -203 204 -205 206 -207 208 -209 -210
0.00/0.00	v  -211 -212 213 -214 215 216 -217 -218 219 -220
0.00/0.00	v  221 -222 223 224 -225 226 -227 -228 229 -230
0.00/0.00	v  -231 232 233 234 -235 -236 237 -238 -239 -240
0.00/0.00	v  -241 242 243 244 245 246 -247 -248 -249 250
0.00/0.00	v  -251 252 -253 254 -255 -256 257 258 -259 260
0.00/0.00	v  261 -262 263 264 265 -266 267 268 269 -270
0.00/0.00	v  -271 -272 273 -274 275 276 277 278 279 -280
0.00/0.00	v  281 282 283 -284 285 286 -287 -288 289 -290
0.00/0.00	v  291 292 293 -294 -295 296 -297 -298 299 -300
0.00/0.00	v  301 -302 -303 -304 -305 -306 -307 -308 309 310
0.00/0.00	v  311 312 313 -314 315 -316 317 -318 319 320
0.00/0.00	v  321 322 -323 -324 -325 -326 -327 328 329 330
0.00/0.00	v  331 332 -333 334 -335 336 -337 -338 -339 340
0.00/0.00	v  341 342 -343 344 345 -346 347 -348 -349 -350
0.00/0.00	v  351 352 353 -354 355 356 -357 -358 -359 360
0.00/0.00	v  -361 362 363 364 365 366 367 -368 -369 370
0.00/0.00	v  371 372 -373 374 375 -376 377 378 -379 380
0.00/0.00	v  -381 382 383 -384 385 -386 387 388 -389 390
0.00/0.00	v  391 392 -393 -394 395 -396 -397 -398 -399 400
0.00/0.00	v  -401 -402 403 -404 405 406 -407 408 -409 -410
0.00/0.00	v  411 -412 413 414 -415 -416 -417 -418 419 420
0.00/0.00	v  -421 422 423 -424 425 -426 -427 -428 -429 -430
0.00/0.00	v  -431 432 -433 -434 435 -436 437 438 -439 -440
0.00/0.00	v  -441 442 -443 444 445 -446 -447 448 -449 450
0.00/0.00	v  0

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node21/watcher-298027-1171849037 -o ROOT/results/node21/solver-298027-1171849037 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/298027-1171849037/saps /tmp/evaluation/298027-1171849037/instance-298027-1171849037.cnf 607360919 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 0.92 0.98 0.99 3/77 23568
/proc/meminfo: memFree=735472/2055920 swapFree=4147448/4192956
[pid=23568] ppid=23566 vsize=5156 CPUtime=0
/proc/23568/stat : 23568 (saps) R 23566 23568 20839 0 -1 4194304 175 0 0 0 0 0 0 0 18 0 1 0 204857620 5279744 159 18446744073709551615 134512640 135167564 4294956624 18446744073709551615 134714176 0 0 4096 0 0 0 0 17 1 0 0
/proc/23568/statm: 1289 159 77 159 0 1128 0

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

Child status: 10
Real time (s): 0.0102911
CPU time (s): 0.009997
CPU user time (s): 0.007998
CPU system time (s): 0.001999
CPU usage (%): 97.142
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.007998
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 193
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= 8
involuntary context switches= 0

runsolver used 0.000999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node21 on Mon Feb 19 01:37:17 UTC 2007

IDJOB= 298027
IDBENCH= 19976
IDSOLVER= 103
FILE ID= node21/298027-1171849037

PBS_JOBID= 3839653

Free space on /tmp= 66562 MiB

SOLVER NAME= saps 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v450/unif-k3-r4.25-v450-c1912-S1279599478-02.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/298027-1171849037/saps /tmp/evaluation/298027-1171849037/instance-298027-1171849037.cnf  607360919   
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node21/watcher-298027-1171849037 -o ROOT/results/node21/solver-298027-1171849037 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/298027-1171849037/saps /tmp/evaluation/298027-1171849037/instance-298027-1171849037.cnf  607360919   

META MD5SUM SOLVER= a43f4f4c91c277b32a975fd145ded8eb
MD5SUM BENCH=  b403a40368f0561878d5cbdd78a87179

RANDOM SEED= 607360919

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node21.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.245
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		: 3000.245
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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:        735816 kB
Buffers:         44608 kB
Cached:        1161904 kB
SwapCached:      15448 kB
Active:         709544 kB
Inactive:       522316 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        735816 kB
SwapTotal:     4192956 kB
SwapFree:      4147448 kB
Dirty:            2268 kB
Writeback:           0 kB
Mapped:          30112 kB
Slab:            73836 kB
Committed_AS:   675312 kB
PageTables:       1656 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= 66562 MiB

End job on node21 on Mon Feb 19 01:37:17 UTC 2007