Trace number 3096221

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 0.064989 0.065578

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S171669125-021.SATISFIABLE.cnf
MD5SUM9649b9e4fa8d251c4c59f8783cbf0b60
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.008998
Satisfiable
(Un)Satisfiability was proved
Number of variables700
Number of clauses2982
Sum of the clauses size8946
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32982
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.06	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.00/0.06	c input CNF file=HOME/instance-3096221-1301756850.cnf 
0.00/0.06	c var#=700 clause#=2982 
0.00/0.06	c clause#=2982 var#=700 ratio=4 
0.00/0.06	c Unsat#=         3 flip#=      2319 
0.00/0.06	c Unsat#=         2 flip#=      2322 
0.00/0.06	c Unsat#=         1 flip#=      2324 
0.00/0.06	c Unsat#=         0 flip#=      3693 
0.00/0.06	c try 1-th flip# 3693
0.00/0.06	c A solution is found
0.00/0.06	c verified 
0.00/0.06	s SATISFIABLE
0.00/0.06	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 -648 649 650 651 652 653 654 -655 -656 657 -658 659 660 661 662 663 -664 -665 666 -667 -668 -669 -670 671 672 673 674 675 -676 -677 678 679 680 -681 682 683 684 685 686 687 688 -689 690 -691 -692 693 -694 -695 -696 697 -698 -699 700 
0.00/0.06	v 0
0.00/0.06	c Done (Running cputime is 0.056 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-3096221-1301756850/watcher-3096221-1301756850 -o /tmp/evaluation-result-3096221-1301756850/solver-3096221-1301756850 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096221-1301756850.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: 3.46 3.85 3.69 4/183 26545
/proc/meminfo: memFree=21350652/32951124 swapFree=67111528/67111528
[pid=26545] ppid=26543 vsize=2980 CPUtime=0 cores=0,2
/proc/26545/stat : 26545 (MultiFlip) R 26543 26545 26496 0 -1 4202496 359 0 0 0 0 0 0 0 25 0 1 0 268100889 3051520 298 33554432000 134512640 134540672 4288151536 18446744073709551615 134538592 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/26545/statm: 745 298 217 7 0 102 0

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

Child status: 10
Real time (s): 0.065578
CPU time (s): 0.064989
CPU user time (s): 0.06299
CPU system time (s): 0.001999
CPU usage (%): 99.1019
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.06299
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 415
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= 1

runsolver used 0.002999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node147 at 2011-04-02 17:07:30
IDJOB=3096221
IDBENCH=82903
IDSOLVER=1523
FILE ID=node147/3096221-1301756850
RUNJOBID= node147-1301756850-26514
PBS_JOBID= 12841062
Free space on /tmp= 71756 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S171669125-021.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096221-1301756850/watcher-3096221-1301756850 -o /tmp/evaluation-result-3096221-1301756850/solver-3096221-1301756850 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096221-1301756850.cnf

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

MD5SUM BENCH= 9649b9e4fa8d251c4c59f8783cbf0b60
RANDOM SEED=872987750

node147.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		: 2666.836
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	: 5333.67
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		: 2666.836
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		: 2666.836
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	: 5332.82
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		: 2666.836
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		: 2666.836
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		: 2666.836
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	: 5332.76
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		: 2666.836
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		: 2666.836
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	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      21351188 kB
Buffers:        358120 kB
Cached:       10908024 kB
SwapCached:          0 kB
Active:        7073152 kB
Inactive:      4256496 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      21351188 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             216 kB
Writeback:           0 kB
AnonPages:       62996 kB
Mapped:          15880 kB
Slab:           205976 kB
PageTables:       4652 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   218808 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= 71756 MiB
End job on node147 at 2011-04-02 17:07:30