Trace number 1524006

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
Hybrid2 2009-03-22SAT 0.262959 0.263366

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S2106599808-035.cnf
MD5SUM23914e10b601e89075d5cbe23a039c20
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.014997
Satisfiable
(Un)Satisfiability was proved
Number of variables460
Number of clauses1955
Sum of the clauses size5865
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31955
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.19/0.26	c try 1 flip j 230740
0.19/0.26	c A solution is found
0.19/0.26	s SATISFIABLE
0.19/0.26	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 -421 422 423 -424 -425 -426 -427 428 429 -430 -431 432 433 -434 435 -436 -437 -438 -439 440 -441 442 443 444 445 446 447 448 -449 450 451 452 453 454 -455 456 -457 458 459 460 
0.19/0.26	v 0 
0.19/0.26	c Done (mycputime is 0.260 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-1524006-1238595970/watcher-1524006-1238595970 -o /tmp/evaluation-result-1524006-1238595970/solver-1524006-1238595970 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1524006-1238595970.cnf 935282927 

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: 0.99 0.99 1.00 3/64 1036
/proc/meminfo: memFree=1026920/2055920 swapFree=4176444/4192956
[pid=1036] ppid=1034 vsize=451072 CPUtime=0
/proc/1036/stat : 1036 (Hybrid2) R 1034 1036 640 0 -1 4194304 139 0 0 0 0 0 0 0 20 0 1 0 1132262338 461897728 123 1992294400 134512640 135106774 4294956208 18446744073709551615 134524116 0 0 4096 0 0 0 0 17 1 0 0
/proc/1036/statm: 112768 123 53 145 0 111644 0

[startup+0.0736641 s]
/proc/loadavg: 0.99 0.99 1.00 3/64 1036
/proc/meminfo: memFree=1026920/2055920 swapFree=4176444/4192956
[pid=1036] ppid=1034 vsize=454972 CPUtime=0.07
/proc/1036/stat : 1036 (Hybrid2) R 1034 1036 640 0 -1 4194304 191 0 0 0 7 0 0 0 20 0 1 0 1132262338 465891328 175 1992294400 134512640 135106774 4294956208 18446744073709551615 134527227 0 0 4096 0 0 0 0 17 1 0 0
/proc/1036/statm: 113743 175 56 145 0 112619 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 454972

[startup+0.101664 s]
/proc/loadavg: 0.99 0.99 1.00 3/64 1036
/proc/meminfo: memFree=1026920/2055920 swapFree=4176444/4192956
[pid=1036] ppid=1034 vsize=454972 CPUtime=0.09
/proc/1036/stat : 1036 (Hybrid2) R 1034 1036 640 0 -1 4194304 191 0 0 0 9 0 0 0 20 0 1 0 1132262338 465891328 175 1992294400 134512640 135106774 4294956208 18446744073709551615 134527357 0 0 4096 0 0 0 0 17 1 0 0
/proc/1036/statm: 113743 175 56 145 0 112619 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 454972

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

[startup+0.201675 s]
/proc/loadavg: 0.99 0.99 1.00 3/64 1036
/proc/meminfo: memFree=1026920/2055920 swapFree=4176444/4192956
[pid=1036] ppid=1034 vsize=454972 CPUtime=0.19
/proc/1036/stat : 1036 (Hybrid2) R 1034 1036 640 0 -1 4194304 191 0 0 0 19 0 0 0 21 0 1 0 1132262338 465891328 175 1992294400 134512640 135106774 4294956208 18446744073709551615 134527357 0 0 4096 0 0 0 0 17 1 0 0
/proc/1036/statm: 113743 175 56 145 0 112619 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 454972

Child status: 10
Real time (s): 0.263366
CPU time (s): 0.262959
CPU user time (s): 0.26196
CPU system time (s): 0.000999
CPU usage (%): 99.8455
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.26196
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= 209
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node27 at 2009-04-01 16:26:10
IDJOB=1524006
IDBENCH=70733
IDSOLVER=530
FILE ID=node27/1524006-1238595970
PBS_JOBID= 9068317
Free space on /tmp= 65720 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S2106599808-035.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1524006-1238595970/watcher-1524006-1238595970 -o /tmp/evaluation-result-1524006-1238595970/solver-1524006-1238595970 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1524006-1238595970.cnf 935282927

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

MD5SUM BENCH= 23914e10b601e89075d5cbe23a039c20
RANDOM SEED=935282927

node27.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		: 2800.196
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	: 5521.40
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		: 2800.196
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:       1027336 kB
Buffers:         96428 kB
Cached:         827788 kB
SwapCached:       9492 kB
Active:         208868 kB
Inactive:       726516 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1027336 kB
SwapTotal:     4192956 kB
SwapFree:      4176444 kB
Dirty:            4612 kB
Writeback:           0 kB
Mapped:          16824 kB
Slab:            79064 kB
Committed_AS:  2999944 kB
PageTables:       1380 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264948 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 65716 MiB
End job on node27 at 2009-04-01 16:26:10