Trace number 1522291

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
iPAWS 2009-03-22SAT 0.010997 0.0111951

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/400/
unif-k3-r4.25-v400-c1700-S418266958-049.cnf
MD5SUM29a186a96c562943a29f8d865fcda20e
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables400
Number of clauses1700
Sum of the clauses size5100
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31700
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	s SATISFIABLE
0.00/0.01	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 0
0.00/0.01	c input file instance-1522291-1238580400.cnf, flips 1182

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-1522291-1238580400/watcher-1522291-1238580400 -o /tmp/evaluation-result-1522291-1238580400/solver-1522291-1238580400 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522291-1238580400.cnf 1791280595 

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: 1.00 1.00 1.07 3/64 18843
/proc/meminfo: memFree=1501992/2055920 swapFree=4178500/4192956
[pid=18843] ppid=18841 vsize=335916 CPUtime=0
/proc/18843/stat : 18843 (iPAWS) R 18841 18843 18648 0 -1 4194304 501 0 0 0 0 0 0 0 18 0 1 0 1130702308 343977984 485 1992294400 134512640 135114423 4294956208 18446744073709551615 134534175 0 0 4096 0 0 0 0 17 1 0 0
/proc/18843/statm: 83979 489 54 146 0 83831 0

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

Child status: 0
Real time (s): 0.0111951
CPU time (s): 0.010997
CPU user time (s): 0.008998
CPU system time (s): 0.001999
CPU usage (%): 98.2308
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.008998
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= 935
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 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node62 at 2009-04-01 12:06:40
IDJOB=1522291
IDBENCH=70686
IDSOLVER=516
FILE ID=node62/1522291-1238580400
PBS_JOBID= 9062220
Free space on /tmp= 66352 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/400/unif-k3-r4.25-v400-c1700-S418266958-049.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522291-1238580400/watcher-1522291-1238580400 -o /tmp/evaluation-result-1522291-1238580400/solver-1522291-1238580400 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522291-1238580400.cnf 1791280595

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

MD5SUM BENCH= 29a186a96c562943a29f8d865fcda20e
RANDOM SEED=1791280595

node62.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		: 3000.232
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		: 3000.232
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:       1502472 kB
Buffers:        102544 kB
Cached:         350948 kB
SwapCached:       7616 kB
Active:         222068 kB
Inactive:       240708 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1502472 kB
SwapTotal:     4192956 kB
SwapFree:      4178500 kB
Dirty:             700 kB
Writeback:           0 kB
Mapped:          14984 kB
Slab:            76460 kB
Committed_AS:  2906028 kB
PageTables:       1460 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66352 MiB
End job on node62 at 2009-04-01 12:06:40