Trace number 297985

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
sapsrt 2007-02-08SAT 0.041992 0.043781

General information on the benchmark

Namerandom/OnTreshold/3SAT/v450/
unif-k3-r4.25-v450-c1912-S1950672055-10.SAT.shuffled.cnf
MD5SUM147d23e113da0ae41cf7bb7585265fd5
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.029995
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)

0.00/0.04	c 
0.00/0.04	c UBCSAT version 1.1.0rr
0.00/0.04	c 
0.00/0.04	c http://www.satlib.org/ubcsat
0.00/0.04	c 
0.00/0.04	c ubcsat -h for help
0.00/0.04	c 
0.00/0.04	c  -runs 1 
0.00/0.04	c  -cutoff 4294967295 
0.00/0.04	c  -timeout 0.000000 
0.00/0.04	c  -gtimeout 0.000000 
0.00/0.04	c  -noimprove 0 
0.00/0.04	c  -target 0 
0.00/0.04	c  -wtarget 0.000000 
0.00/0.04	c  -seed 175884006 
0.00/0.04	c  -solve 0 
0.00/0.04	c  -find,-numsol 0 
0.00/0.04	c  -findunique 0 
0.00/0.04	c  -srestart 0 
0.00/0.04	c  -prestart 0.000000 
0.00/0.04	c  -drestart 0 
0.00/0.04	c 
0.00/0.04	c  -alpha 1.126000 
0.00/0.04	c  -rho 0.666000 
0.00/0.04	c  -ps 0.033000 
0.00/0.04	c  -wp 0.060000 
0.00/0.04	c  -sapsthresh -0.100000 
0.00/0.04	c 
0.00/0.04	s SATISFIABLE
0.00/0.04	v  -1 -2 3 -4 5 -6 -7 8 9 10
0.00/0.04	v  11 -12 -13 -14 15 16 17 18 19 -20
0.00/0.04	v  -21 22 23 -24 -25 26 -27 -28 29 -30
0.00/0.04	v  -31 -32 33 -34 35 -36 37 -38 39 -40
0.00/0.04	v  -41 42 -43 -44 -45 46 47 48 -49 -50
0.00/0.04	v  51 52 -53 -54 55 -56 57 58 -59 -60
0.00/0.04	v  -61 62 -63 -64 -65 66 67 -68 -69 70
0.00/0.04	v  71 72 -73 -74 75 -76 77 78 -79 80
0.00/0.04	v  81 82 -83 -84 85 -86 87 -88 -89 -90
0.00/0.04	v  91 92 -93 -94 95 -96 -97 -98 99 -100
0.00/0.04	v  -101 -102 103 104 -105 106 107 -108 -109 -110
0.00/0.04	v  -111 -112 113 -114 115 -116 -117 -118 -119 -120
0.00/0.04	v  121 -122 -123 -124 125 -126 -127 -128 -129 130
0.00/0.04	v  131 132 -133 -134 135 136 137 138 139 140
0.00/0.04	v  141 -142 -143 -144 -145 146 -147 148 -149 150
0.00/0.04	v  151 152 153 154 -155 -156 -157 -158 159 -160
0.00/0.04	v  161 162 163 -164 165 166 -167 168 -169 -170
0.00/0.04	v  -171 -172 173 -174 175 176 -177 -178 179 -180
0.00/0.04	v  -181 182 -183 -184 185 186 187 -188 189 190
0.00/0.04	v  191 192 -193 -194 195 -196 -197 -198 -199 -200
0.00/0.04	v  201 -202 -203 204 -205 -206 207 208 -209 210
0.00/0.04	v  211 212 -213 -214 -215 -216 -217 218 -219 220
0.00/0.04	v  -221 222 223 224 -225 -226 227 -228 -229 -230
0.00/0.04	v  -231 232 233 -234 235 -236 -237 -238 -239 240
0.00/0.04	v  241 242 -243 -244 -245 246 -247 248 -249 -250
0.00/0.04	v  -251 -252 253 254 255 256 -257 -258 -259 -260
0.00/0.04	v  261 262 263 264 -265 -266 -267 -268 269 270
0.00/0.04	v  271 272 273 274 -275 -276 -277 278 279 280
0.00/0.04	v  -281 -282 283 284 -285 286 287 -288 -289 290
0.00/0.04	v  -291 -292 -293 -294 295 296 -297 -298 -299 300
0.00/0.04	v  301 -302 -303 -304 -305 -306 -307 -308 309 -310
0.00/0.04	v  311 -312 -313 -314 -315 -316 -317 -318 319 -320
0.00/0.04	v  321 -322 -323 -324 -325 326 -327 -328 -329 330
0.00/0.04	v  -331 -332 333 -334 -335 -336 -337 -338 -339 340
0.00/0.04	v  -341 -342 -343 -344 -345 346 -347 -348 -349 -350
0.00/0.04	v  351 352 353 354 -355 356 -357 358 -359 -360
0.00/0.04	v  361 362 -363 364 -365 -366 367 368 -369 -370
0.00/0.04	v  371 372 -373 374 375 -376 377 -378 -379 -380
0.00/0.04	v  381 -382 -383 384 385 386 -387 388 -389 -390
0.00/0.04	v  -391 392 393 -394 -395 396 397 -398 -399 400
0.00/0.04	v  -401 -402 403 -404 405 406 407 408 409 -410
0.00/0.04	v  -411 -412 -413 414 415 -416 417 -418 -419 420
0.00/0.04	v  421 -422 -423 -424 -425 -426 -427 428 429 430
0.00/0.04	v  431 432 433 -434 -435 436 -437 438 439 -440
0.00/0.04	v  441 442 -443 -444 -445 -446 447 -448 -449 -450
0.00/0.04	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/node43/watcher-297985-1171848545 -o ROOT/results/node43/solver-297985-1171848545 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/297985-1171848545/sapsrt /tmp/evaluation/297985-1171848545/instance-297985-1171848545.cnf 175884006 

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: 1.01 1.01 1.00 3/64 18117
/proc/meminfo: memFree=532976/2055920 swapFree=4183376/4192956
[pid=18117] ppid=18115 vsize=5156 CPUtime=0
/proc/18117/stat : 18117 (sapsrt) R 18115 18117 17092 0 -1 4194304 181 0 0 0 0 0 0 0 18 0 1 0 204810534 5279744 165 18446744073709551615 134512640 135167692 4294956704 18446744073709551615 134549574 0 0 4096 0 0 0 0 17 1 0 0
/proc/18117/statm: 1289 165 83 159 0 1128 0

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

Child status: 10
Real time (s): 0.043781
CPU time (s): 0.041992
CPU user time (s): 0.040993
CPU system time (s): 0.000999
CPU usage (%): 95.9137
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.040993
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 196
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 0.003999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node43 on Mon Feb 19 01:29:05 UTC 2007

IDJOB= 297985
IDBENCH= 19975
IDSOLVER= 102
FILE ID= node43/297985-1171848545

PBS_JOBID= 3839716

Free space on /tmp= 66562 MiB

SOLVER NAME= sapsrt 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v450/unif-k3-r4.25-v450-c1912-S1950672055-10.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/297985-1171848545/sapsrt /tmp/evaluation/297985-1171848545/instance-297985-1171848545.cnf  175884006       
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node43/watcher-297985-1171848545 -o ROOT/results/node43/solver-297985-1171848545 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/297985-1171848545/sapsrt /tmp/evaluation/297985-1171848545/instance-297985-1171848545.cnf  175884006       

META MD5SUM SOLVER= a43f4f4c91c277b32a975fd145ded8eb
MD5SUM BENCH=  147d23e113da0ae41cf7bb7585265fd5

RANDOM SEED= 175884006

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node43.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		: 3000.281
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		: 3000.281
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:        533384 kB
Buffers:         53596 kB
Cached:        1342512 kB
SwapCached:       4080 kB
Active:         869988 kB
Inactive:       536248 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        533384 kB
SwapTotal:     4192956 kB
SwapFree:      4183376 kB
Dirty:            2188 kB
Writeback:           0 kB
Mapped:          15408 kB
Slab:           102344 kB
Committed_AS:   547508 kB
PageTables:       1392 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 node43 on Mon Feb 19 01:29:05 UTC 2007