Trace number 297424

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
Hybrid1 2007-02-08SAT 1.82472 1.82526

General information on the benchmark

Namerandom/OnTreshold/3SAT/v550/
unif-k3-r4.26-v550-c2343-S1238286461-19.SAT.shuffled.cnf
MD5SUMfeae85ae56b54fcbcde345d479230ced
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.12198
Satisfiable
(Un)Satisfiability was proved
Number of variables550
Number of clauses2343
Sum of the clauses size7029
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32343
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

1.74/1.82	c try 1 flip j 1178047
1.74/1.82	c A solution is found
1.74/1.82	s SATISFIABLE
1.74/1.82	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 -499 500 501 -502 503 504 505 506 507 -508 -509 510 -511 512 513 -514 -515 516 -517 -518 519 520 -521 -522 523 524 -525 -526 527 528 -529 -530 531 -532 533 -534 -535 -536 537 -538 -539 -540 -541 -542 -543 544 545 -546 -547 548 549 -550 
1.74/1.82	v 0 
1.74/1.82	c Done (mycputime is 0.000 seconds)

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/node17/watcher-297424-1171838313 -o ROOT/results/node17/solver-297424-1171838313 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/297424-1171838313/Hybrid1 /tmp/evaluation/297424-1171838313/instance-297424-1171838313.cnf 

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: 8.01 7.06 4.31 3/77 21036
/proc/meminfo: memFree=1573312/2055920 swapFree=4192812/4192956
[pid=21036] ppid=21034 vsize=244848 CPUtime=0
/proc/21036/stat : 21036 (Hybrid1) R 21034 21036 19722 0 -1 4194304 134 0 0 0 0 0 0 0 18 0 1 0 203785563 250724352 117 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134523352 0 0 4096 0 0 0 0 17 1 0 0
/proc/21036/statm: 61212 117 40 103 0 60716 0

[startup+0.106409 s]
/proc/loadavg: 8.01 7.06 4.31 3/77 21036
/proc/meminfo: memFree=1573312/2055920 swapFree=4192812/4192956
[pid=21036] ppid=21034 vsize=246532 CPUtime=0.1
/proc/21036/stat : 21036 (Hybrid1) R 21034 21036 19722 0 -1 4194304 209 0 0 0 10 0 0 0 18 0 1 0 203785563 252448768 189 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134545109 0 0 4096 0 0 0 0 17 1 0 0
/proc/21036/statm: 61633 189 44 103 0 61137 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 246532

[startup+0.514452 s]
/proc/loadavg: 8.01 7.06 4.31 3/77 21036
/proc/meminfo: memFree=1573312/2055920 swapFree=4192812/4192956
[pid=21036] ppid=21034 vsize=246532 CPUtime=0.51
/proc/21036/stat : 21036 (Hybrid1) R 21034 21036 19722 0 -1 4194304 209 0 0 0 51 0 0 0 21 0 1 0 203785563 252448768 189 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134544835 0 0 4096 0 0 0 0 17 1 0 0
/proc/21036/statm: 61633 189 44 103 0 61137 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 246532

[startup+1.33454 s]
/proc/loadavg: 8.01 7.06 4.31 2/78 21037
/proc/meminfo: memFree=1572536/2055920 swapFree=4192812/4192956
[pid=21036] ppid=21034 vsize=246532 CPUtime=1.33
/proc/21036/stat : 21036 (Hybrid1) R 21034 21036 19722 0 -1 4194304 209 0 0 0 133 0 0 0 25 0 1 0 203785563 252448768 189 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134546374 0 0 4096 0 0 0 0 17 1 0 0
/proc/21036/statm: 61633 189 44 103 0 61137 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 246532

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

[startup+1.64057 s]
/proc/loadavg: 8.01 7.06 4.31 2/78 21037
/proc/meminfo: memFree=1572536/2055920 swapFree=4192812/4192956
[pid=21036] ppid=21034 vsize=246532 CPUtime=1.63
/proc/21036/stat : 21036 (Hybrid1) R 21034 21036 19722 0 -1 4194304 209 0 0 0 163 0 0 0 25 0 1 0 203785563 252448768 189 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134545320 0 0 4096 0 0 0 0 17 1 0 0
/proc/21036/statm: 61633 189 44 103 0 61137 0
Current children cumulated CPU time (s) 1.63
Current children cumulated vsize (KiB) 246532

[startup+1.74258 s]
/proc/loadavg: 8.01 7.06 4.31 2/78 21037
/proc/meminfo: memFree=1572536/2055920 swapFree=4192812/4192956
[pid=21036] ppid=21034 vsize=246532 CPUtime=1.74
/proc/21036/stat : 21036 (Hybrid1) R 21034 21036 19722 0 -1 4194304 209 0 0 0 174 0 0 0 25 0 1 0 203785563 252448768 189 18446744073709551615 134512640 134935932 4294956624 18446744073709551615 134553650 0 0 4096 0 0 0 0 17 1 0 0
/proc/21036/statm: 61633 189 44 103 0 61137 0
Current children cumulated CPU time (s) 1.74
Current children cumulated vsize (KiB) 246532

Child status: 10
Real time (s): 1.82526
CPU time (s): 1.82472
CPU user time (s): 1.82172
CPU system time (s): 0.002999
CPU usage (%): 99.9705
Max. virtual memory (cumulated for all children) (KiB): 246532

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.82172
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= 222
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= 1

runsolver used 0.002999 second user time and 0.007998 second system time

The end

Launcher Data (download as text)

Begin job on node17 on Sun Feb 18 22:38:33 UTC 2007

IDJOB= 297424
IDBENCH= 19961
IDSOLVER= 115
FILE ID= node17/297424-1171838313

PBS_JOBID= 3839372

Free space on /tmp= 66538 MiB

SOLVER NAME= Hybrid1 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v550/unif-k3-r4.26-v550-c2343-S1238286461-19.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/297424-1171838313/Hybrid1 /tmp/evaluation/297424-1171838313/instance-297424-1171838313.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node17/watcher-297424-1171838313 -o ROOT/results/node17/solver-297424-1171838313 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/297424-1171838313/Hybrid1 /tmp/evaluation/297424-1171838313/instance-297424-1171838313.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  feae85ae56b54fcbcde345d479230ced

RANDOM SEED= 198690866

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node17.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		: 3000.229
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		: 3000.229
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:       1573720 kB
Buffers:         50816 kB
Cached:         315092 kB
SwapCached:          0 kB
Active:         271048 kB
Inactive:       139608 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1573720 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            6164 kB
Writeback:           0 kB
Mapped:          63632 kB
Slab:            57080 kB
Committed_AS:   718768 kB
PageTables:       1748 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= 66538 MiB

End job on node17 on Sun Feb 18 22:38:35 UTC 2007