Trace number 3096312

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
MultiFlip 2011-02-11SAT 0.269958 0.270795

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v550-c2343-S311101868-094.SATISFIABLE.cnf
MD5SUM2ff4c014ab92fa532c070237e3ac5307
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.029994
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 

0.19/0.27	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.19/0.27	c input CNF file=HOME/instance-3096312-1301758435.cnf 
0.19/0.27	c var#=550 clause#=2343 
0.19/0.27	c clause#=2343 var#=550 ratio=4 
0.19/0.27	c Unsat#=         3 flip#=      7539 
0.19/0.27	c Unsat#=         2 flip#=     18475 
0.19/0.27	c Unsat#=         1 flip#=     63581 
0.19/0.27	c Unsat#=         0 flip#=    387880 
0.19/0.27	c try 1-th flip# 387880
0.19/0.27	c A solution is found
0.19/0.27	c verified 
0.19/0.27	s SATISFIABLE
0.19/0.27	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 
0.19/0.27	v 0
0.19/0.27	c Done (Running cputime is 0.263 seconds)

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 893)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3096312-1301758435/watcher-3096312-1301758435 -o /tmp/evaluation-result-3096312-1301758435/solver-3096312-1301758435 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096312-1301758435.cnf 

running on 2 cores: 0,2

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 3.78 3.95 3.89 4/189 28003
/proc/meminfo: memFree=22671392/32951124 swapFree=67111528/67111528
[pid=28003] ppid=28001 vsize=3108 CPUtime=0 cores=0,2
/proc/28003/stat : 28003 (MultiFlip) R 28001 28003 27553 0 -1 4202496 368 0 0 0 0 0 0 0 25 0 1 0 287444208 3182592 307 33554432000 134512640 134540672 4288681472 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28003/statm: 777 307 219 7 0 134 0

[startup+0.0292579 s]
/proc/loadavg: 3.78 3.95 3.89 4/189 28003
/proc/meminfo: memFree=22671392/32951124 swapFree=67111528/67111528
[pid=28003] ppid=28001 vsize=3108 CPUtime=0.02 cores=0,2
/proc/28003/stat : 28003 (MultiFlip) R 28001 28003 27553 0 -1 4202496 368 0 0 0 2 0 0 0 25 0 1 0 287444208 3182592 307 33554432000 134512640 134540672 4288681472 18446744073709551615 134524689 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28003/statm: 777 307 219 7 0 134 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 3108

[startup+0.10029 s]
/proc/loadavg: 3.78 3.95 3.89 4/189 28003
/proc/meminfo: memFree=22671392/32951124 swapFree=67111528/67111528
[pid=28003] ppid=28001 vsize=3108 CPUtime=0.09 cores=0,2
/proc/28003/stat : 28003 (MultiFlip) R 28001 28003 27553 0 -1 4202496 373 0 0 0 9 0 0 0 25 0 1 0 287444208 3182592 312 33554432000 134512640 134540672 4288681472 18446744073709551615 134524138 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28003/statm: 777 312 220 7 0 134 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3108

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

[startup+0.200251 s]
/proc/loadavg: 3.78 3.95 3.89 4/189 28003
/proc/meminfo: memFree=22671392/32951124 swapFree=67111528/67111528
[pid=28003] ppid=28001 vsize=3108 CPUtime=0.19 cores=0,2
/proc/28003/stat : 28003 (MultiFlip) R 28001 28003 27553 0 -1 4202496 373 0 0 0 19 0 0 0 25 0 1 0 287444208 3182592 312 33554432000 134512640 134540672 4288681472 18446744073709551615 134524259 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/28003/statm: 777 312 220 7 0 134 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 3108

Child status: 10
Real time (s): 0.270795
CPU time (s): 0.269958
CPU user time (s): 0.268959
CPU system time (s): 0.000999
CPU usage (%): 99.691
Max. virtual memory (cumulated for all children) (KiB): 3108

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.268959
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= 394
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= 6
involuntary context switches= 2

runsolver used 0.002999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node109 at 2011-04-02 17:33:55
IDJOB=3096312
IDBENCH=82994
IDSOLVER=1523
FILE ID=node109/3096312-1301758435
RUNJOBID= node109-1301757124-27571
PBS_JOBID= 12841080
Free space on /tmp= 72060 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v550-c2343-S311101868-094.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096312-1301758435/watcher-3096312-1301758435 -o /tmp/evaluation-result-3096312-1301758435/solver-3096312-1301758435 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096312-1301758435.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 2ff4c014ab92fa532c070237e3ac5307
RANDOM SEED=1183717662

node109.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.61
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.809
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      22671548 kB
Buffers:        344648 kB
Cached:        9604692 kB
SwapCached:          0 kB
Active:        5978048 kB
Inactive:      4037784 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22671548 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             672 kB
Writeback:           0 kB
AnonPages:       66948 kB
Mapped:          16184 kB
Slab:           202112 kB
PageTables:       4848 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   250564 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 72060 MiB
End job on node109 at 2011-04-02 17:33:55