Trace number 3096062

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 0.115981 0.115544

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S1985868475-070.SATISFIABLE.cnf
MD5SUM2611875052dd229d9ca71a614eae0715
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.015996
Satisfiable
(Un)Satisfiability was proved
Number of variables750
Number of clauses3195
Sum of the clauses size9585
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 33195
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.09/0.11	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.11	c input CNF file=HOME/instance-3096062-1301752493.cnf 
0.09/0.11	c var#=750 clause#=3195 
0.09/0.11	c clause#=3195 var#=750 ratio=4 
0.09/0.11	c Unsat#=         3 flip#=     13875 
0.09/0.11	c Unsat#=         2 flip#=     21406 
0.09/0.11	c Unsat#=         1 flip#=     89707 
0.09/0.11	c Unsat#=         0 flip#=     97607 
0.09/0.11	c try 1-th flip# 97607
0.09/0.11	c A solution is found
0.09/0.11	c verified 
0.09/0.11	s SATISFIABLE
0.09/0.11	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 -701 702 703 704 705 -706 707 708 -709 -710 711 712 713 -714 715 716 717 718 -719 720 -721 722 723 724 -725 726 727 -728 729 730 -731 -732 -733 734 -735 -736 -737 738 -739 -740 -741 -742 -743 744 745 746 747 -748 -749 -750 
0.09/0.11	v 0
0.09/0.11	c Done (Running cputime is 0.106 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-3096062-1301752493/watcher-3096062-1301752493 -o /tmp/evaluation-result-3096062-1301752493/solver-3096062-1301752493 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096062-1301752493.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: 4.01 4.02 3.94 4/189 17586
/proc/meminfo: memFree=20062596/32951124 swapFree=67111528/67111528
[pid=17586] ppid=17584 vsize=3112 CPUtime=0 cores=1,3
/proc/17586/stat : 17586 (MultiFlip) R 17584 17586 16916 0 -1 4202496 362 0 0 0 0 0 0 0 25 0 1 0 267664625 3186688 300 33554432000 134512640 134540672 4289093632 18446744073709551615 134538703 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/17586/statm: 778 300 217 7 0 135 0

[startup+0.0633199 s]
/proc/loadavg: 4.01 4.02 3.94 4/189 17586
/proc/meminfo: memFree=20062596/32951124 swapFree=67111528/67111528
[pid=17586] ppid=17584 vsize=3112 CPUtime=0.06 cores=1,3
/proc/17586/stat : 17586 (MultiFlip) R 17584 17586 16916 0 -1 4202496 398 0 0 0 6 0 0 0 25 0 1 0 267664625 3186688 336 33554432000 134512640 134540672 4289093632 18446744073709551615 134526936 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/17586/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3112

[startup+0.100327 s]
/proc/loadavg: 4.01 4.02 3.94 4/189 17586
/proc/meminfo: memFree=20062596/32951124 swapFree=67111528/67111528
[pid=17586] ppid=17584 vsize=3112 CPUtime=0.09 cores=1,3
/proc/17586/stat : 17586 (MultiFlip) R 17584 17586 16916 0 -1 4202496 398 0 0 0 9 0 0 0 25 0 1 0 267664625 3186688 336 33554432000 134512640 134540672 4289093632 18446744073709551615 134524243 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/17586/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

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

Child status: 10
Real time (s): 0.115544
CPU time (s): 0.115981
CPU user time (s): 0.112982
CPU system time (s): 0.002999
CPU usage (%): 100.378
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.112982
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= 423
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 0.000999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node140 at 2011-04-02 15:54:53
IDJOB=3096062
IDBENCH=82744
IDSOLVER=1523
FILE ID=node140/3096062-1301752493
RUNJOBID= node140-1301748572-16936
PBS_JOBID= 12840998
Free space on /tmp= 71528 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S1985868475-070.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096062-1301752493/watcher-3096062-1301752493 -o /tmp/evaluation-result-3096062-1301752493/solver-3096062-1301752493 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096062-1301752493.cnf

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

MD5SUM BENCH= 2611875052dd229d9ca71a614eae0715
RANDOM SEED=141225678

node140.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		: 2666.833
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	: 5333.66
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		: 2666.833
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	: 5226.14
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		: 2666.833
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		: 2666.833
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	: 5332.77
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		: 2666.833
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		: 2666.833
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	: 5332.74
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		: 2666.833
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	: 5332.75
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		: 2666.833
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:      20062876 kB
Buffers:        362580 kB
Cached:       12163408 kB
SwapCached:          0 kB
Active:        7476500 kB
Inactive:      5133872 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20062876 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              36 kB
Writeback:           0 kB
AnonPages:       84348 kB
Mapped:          16144 kB
Slab:           213640 kB
PageTables:       5180 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   266268 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= 71528 MiB
End job on node140 at 2011-04-02 15:54:53