Trace number 3096171

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 0.31695 0.319314

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v650-c2769-S1920526651-049.SATISFIABLE.cnf
MD5SUM5df52ad002b8e310753df40806d6b835
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.009998
Satisfiable
(Un)Satisfiability was proved
Number of variables650
Number of clauses2769
Sum of the clauses size8307
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32769
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.29/0.31	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.29/0.31	c input CNF file=HOME/instance-3096171-1301753993.cnf 
0.29/0.31	c var#=650 clause#=2769 
0.29/0.31	c clause#=2769 var#=650 ratio=4 
0.29/0.31	c Unsat#=         3 flip#=     18676 
0.29/0.31	c Unsat#=         2 flip#=     18777 
0.29/0.31	c Unsat#=         1 flip#=     19018 
0.29/0.31	c Unsat#=         0 flip#=    478414 
0.29/0.31	c try 1-th flip# 478414
0.29/0.31	c A solution is found
0.29/0.31	c verified 
0.29/0.31	s SATISFIABLE
0.29/0.31	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 -551 -552 -553 554 555 556 -557 -558 559 -560 561 -562 563 564 -565 566 -567 -568 -569 -570 -571 572 573 574 575 -576 -577 -578 579 -580 -581 -582 -583 -584 585 586 -587 588 589 -590 -591 592 593 -594 -595 -596 -597 -598 599 -600 601 602 603 -604 -605 -606 607 -608 -609 610 611 612 -613 614 -615 616 -617 -618 619 -620 -621 -622 -623 624 -625 626 -627 -628 -629 -630 631 -632 -633 634 -635 636 637 638 -639 640 -641 642 -643 -644 -645 -646 647 648 -649 650 
0.29/0.31	v 0
0.29/0.31	c Done (Running cputime is 0.309 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-3096171-1301753993/watcher-3096171-1301753993 -o /tmp/evaluation-result-3096171-1301753993/solver-3096171-1301753993 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096171-1301753993.cnf 

running on 2 cores: 1,3

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: 4.02 4.01 3.93 5/189 24108
/proc/meminfo: memFree=20912708/32951124 swapFree=67111524/67111528
[pid=24108] ppid=24106 vsize=2980 CPUtime=0 cores=1,3
/proc/24108/stat : 24108 (MultiFlip) R 24106 24108 23275 0 -1 4202496 349 0 0 0 0 0 0 0 25 0 1 0 365629807 3051520 287 33554432000 134512640 134540672 4287286240 18446744073709551615 10159612 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24108/statm: 745 291 217 7 0 102 0

[startup+0.055383 s]
/proc/loadavg: 4.02 4.01 3.93 5/189 24108
/proc/meminfo: memFree=20912708/32951124 swapFree=67111524/67111528
[pid=24108] ppid=24106 vsize=3112 CPUtime=0.05 cores=1,3
/proc/24108/stat : 24108 (MultiFlip) R 24106 24108 23275 0 -1 4202496 385 0 0 0 5 0 0 0 25 0 1 0 365629807 3186688 323 33554432000 134512640 134540672 4287286240 18446744073709551615 134524000 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24108/statm: 778 323 220 7 0 135 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 3112

[startup+0.100379 s]
/proc/loadavg: 4.02 4.01 3.93 5/189 24108
/proc/meminfo: memFree=20912708/32951124 swapFree=67111524/67111528
[pid=24108] ppid=24106 vsize=3112 CPUtime=0.09 cores=1,3
/proc/24108/stat : 24108 (MultiFlip) R 24106 24108 23275 0 -1 4202496 385 0 0 0 9 0 0 0 25 0 1 0 365629807 3186688 323 33554432000 134512640 134540672 4287286240 18446744073709551615 134523849 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24108/statm: 778 323 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.30034 s]
/proc/loadavg: 4.02 4.01 3.93 5/189 24108
/proc/meminfo: memFree=20912708/32951124 swapFree=67111524/67111528
[pid=24108] ppid=24106 vsize=3112 CPUtime=0.29 cores=1,3
/proc/24108/stat : 24108 (MultiFlip) R 24106 24108 23275 0 -1 4202496 385 0 0 0 29 0 0 0 25 0 1 0 365629807 3186688 323 33554432000 134512640 134540672 4287286240 18446744073709551615 134523457 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/24108/statm: 778 323 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

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

Child status: 10
Real time (s): 0.319314
CPU time (s): 0.31695
CPU user time (s): 0.315951
CPU system time (s): 0.000999
CPU usage (%): 99.2597
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.315951
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= 407
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= 12
involuntary context switches= 5

runsolver used 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node111 at 2011-04-02 16:19:53
IDJOB=3096171
IDBENCH=82853
IDSOLVER=1523
FILE ID=node111/3096171-1301753993
RUNJOBID= node111-1301748572-23295
PBS_JOBID= 12841026
Free space on /tmp= 71244 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v650-c2769-S1920526651-049.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096171-1301753993/watcher-3096171-1301753993 -o /tmp/evaluation-result-3096171-1301753993/solver-3096171-1301753993 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096171-1301753993.cnf

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

MD5SUM BENCH= 5df52ad002b8e310753df40806d6b835
RANDOM SEED=1288898419

node111.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		: 2666.849
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	: 5333.69
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		: 2666.849
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	: 5428.12
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		: 2666.849
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	: 5332.75
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		: 2666.849
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	: 5332.86
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		: 2666.849
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	: 5332.75
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		: 2666.849
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	: 5332.83
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		: 2666.849
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	: 5332.67
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		: 2666.849
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	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      20912748 kB
Buffers:        349316 kB
Cached:       11326156 kB
SwapCached:          4 kB
Active:        7284848 kB
Inactive:      4459764 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20912748 kB
SwapTotal:    67111528 kB
SwapFree:     67111524 kB
Dirty:              20 kB
Writeback:           0 kB
AnonPages:       69324 kB
Mapped:          16152 kB
Slab:           230268 kB
PageTables:       5228 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   253704 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= 71244 MiB
End job on node111 at 2011-04-02 16:19:54