Trace number 1523751

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 0.748885 0.748916

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/500/
unif-k3-r4.25-v500-c2125-S1258122549-031.cnf
MD5SUMe4beefd25957794efe8088679c7fff55
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.026995
Satisfiable
(Un)Satisfiability was proved
Number of variables500
Number of clauses2125
Sum of the clauses size6375
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32125
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.69/0.74	c try 1 flip j 659954
0.69/0.74	c A solution is found
0.69/0.74	s SATISFIABLE
0.69/0.74	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 -461 462 463 -464 -465 -466 467 468 -469 -470 -471 472 473 -474 475 -476 -477 -478 479 480 -481 482 -483 484 485 -486 487 488 -489 490 -491 -492 -493 494 495 496 -497 498 499 500 
0.69/0.74	v 0 
0.69/0.74	c Done (mycputime is 0.740 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-1523751-1238570265/watcher-1523751-1238570265 -o /tmp/evaluation-result-1523751-1238570265/solver-1523751-1238570265 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523751-1238570265.cnf 599577430 

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 0.98 1.00 3/64 8122
/proc/meminfo: memFree=1475008/2055920 swapFree=4177220/4192956
[pid=8122] ppid=8120 vsize=451072 CPUtime=0
/proc/8122/stat : 8122 (Hybrid2) R 8120 8122 7864 0 -1 4194304 142 0 0 0 0 0 0 0 18 0 1 0 1129692397 461897728 126 1992294400 134512640 135106774 4294956208 18446744073709551615 134523973 0 0 4096 0 0 0 0 17 1 0 0
/proc/8122/statm: 112768 126 53 145 0 111644 0

[startup+0.0275731 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 8122
/proc/meminfo: memFree=1475008/2055920 swapFree=4177220/4192956
[pid=8122] ppid=8120 vsize=454972 CPUtime=0.02
/proc/8122/stat : 8122 (Hybrid2) R 8120 8122 7864 0 -1 4194304 195 0 0 0 2 0 0 0 18 0 1 0 1129692397 465891328 179 1992294400 134512640 135106774 4294956208 18446744073709551615 134528683 0 0 4096 0 0 0 0 17 1 0 0
/proc/8122/statm: 113743 179 56 145 0 112619 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 454972

[startup+0.101582 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 8122
/proc/meminfo: memFree=1475008/2055920 swapFree=4177220/4192956
[pid=8122] ppid=8120 vsize=454972 CPUtime=0.09
/proc/8122/stat : 8122 (Hybrid2) R 8120 8122 7864 0 -1 4194304 195 0 0 0 9 0 0 0 18 0 1 0 1129692397 465891328 179 1992294400 134512640 135106774 4294956208 18446744073709551615 134565683 0 0 4096 0 0 0 0 17 1 0 0
/proc/8122/statm: 113743 179 56 145 0 112619 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 454972

[startup+0.301603 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 8122
/proc/meminfo: memFree=1475008/2055920 swapFree=4177220/4192956
[pid=8122] ppid=8120 vsize=454972 CPUtime=0.29
/proc/8122/stat : 8122 (Hybrid2) R 8120 8122 7864 0 -1 4194304 195 0 0 0 29 0 0 0 19 0 1 0 1129692397 465891328 179 1992294400 134512640 135106774 4294956208 18446744073709551615 134526372 0 0 4096 0 0 0 0 17 1 0 0
/proc/8122/statm: 113743 179 56 145 0 112619 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 454972

[startup+0.70165 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 8122
/proc/meminfo: memFree=1475008/2055920 swapFree=4177220/4192956
[pid=8122] ppid=8120 vsize=454972 CPUtime=0.69
/proc/8122/stat : 8122 (Hybrid2) R 8120 8122 7864 0 -1 4194304 195 0 0 0 69 0 0 0 23 0 1 0 1129692397 465891328 179 1992294400 134512640 135106774 4294956208 18446744073709551615 134528663 0 0 4096 0 0 0 0 17 1 0 0
/proc/8122/statm: 113743 179 56 145 0 112619 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 454972

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

Child status: 10
Real time (s): 0.748916
CPU time (s): 0.748885
CPU user time (s): 0.745886
CPU system time (s): 0.002999
CPU usage (%): 99.9959
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.745886
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 213
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= 2

runsolver used 0.002999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node20 at 2009-04-01 09:17:45
IDJOB=1523751
IDBENCH=70648
IDSOLVER=530
FILE ID=node20/1523751-1238570265
PBS_JOBID= 9070506
Free space on /tmp= 65684 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/500/unif-k3-r4.25-v500-c2125-S1258122549-031.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523751-1238570265/watcher-1523751-1238570265 -o /tmp/evaluation-result-1523751-1238570265/solver-1523751-1238570265 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523751-1238570265.cnf 599577430

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

MD5SUM BENCH= e4beefd25957794efe8088679c7fff55
RANDOM SEED=599577430

node20.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		: 3000.235
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		: 3000.235
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:       1475488 kB
Buffers:         94904 kB
Cached:         383940 kB
SwapCached:       9532 kB
Active:         211528 kB
Inactive:       278284 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1475488 kB
SwapTotal:     4192956 kB
SwapFree:      4177220 kB
Dirty:            4612 kB
Writeback:           0 kB
Mapped:          16664 kB
Slab:            76596 kB
Committed_AS:  2991008 kB
PageTables:       1404 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= 65676 MiB
End job on node20 at 2009-04-01 09:17:46