Trace number 309761

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
March KS 2007-02-08SAT 0.446931 0.446398

General information on the benchmark

Namerandom/2+p/p0.9/v810/
unif2p-p0.9-v810-c2932-S1014417748-14-SAT.cnf
MD5SUM12c6ae21cea692230c5e45227dcf3ab1
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.050991
Satisfiable
(Un)Satisfiability was proved
Number of variables810
Number of clauses2931
Sum of the clauses size8500
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2293
Number of clauses of size 32638
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.02	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.02	c main()::
0.00/0.02	c initFormula():: searching for DIMACS p-line....
0.00/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 810 variables and 2931 clauses.
0.00/0.02	c parseCNF():: parsing....
0.00/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.02	c runParser():: parsing was successful, warming up engines...
0.00/0.02	c simplify_formula():: removed 0 tautological, 28 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 804 free variables and 2903 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.563
0.00/0.02	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 104 duplicate clauses
0.00/0.02	c resolvent_look() :: found 58 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 810 variables and 2961 clauses.
0.00/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.02	c transformTo3SAT():: the transformation yielded 810 variabels and 2961 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2961 / 810 ) = 3.66
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c suggested doublelook initial :: 0
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 265 JD: 16
0.30/0.37	c |----------------------------------------------------------------|
0.40/0.44	c solution bin :: 1000000000000000.0000000010001110
0.40/0.44	c direction branchin :: current_rights = 5
0.40/0.44	
c |
0.40/0.44	c
0.40/0.44	c main():: nodeCount: 400
0.40/0.44	c main():: dead ends in main: 1
0.40/0.44	c main():: lookAheadCount: 54939
0.40/0.44	c main():: unitResolveCount: 5672
0.40/0.44	c main():: time=0.440000
0.40/0.44	c main():: necessary_assignments: 129
0.40/0.44	c main():: bin_sat: 0, bin_unsat 0
0.40/0.44	c main():: doublelook: #: 1817, succes #: 1357
0.40/0.44	c main():: doublelook: overall 3.369 of all possible doublelooks executed
0.40/0.44	c main():: doublelook: succesrate: 74.684, average DL_trigger: 9252.130
0.40/0.44	c main():: SOLUTION VERIFIED :-)
0.40/0.44	s SATISFIABLE
0.40/0.44	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 -751 752 -753 754 -755 -756 757 -758 759 760 761 -762 763 764 -765 766 -767 -768 769 770 771 772 -773 774 775 776 -777 778 779 780 -781 782 783 -784 -785 -786 787 -788 -789 790 -791 792 -793 794 -795 796 797 -798 -799 -800 -801 802 -803 -804 805 806 -807 -808 809 -810 0

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/node4/watcher-309761-1172546591 -o ROOT/results/node4/solver-309761-1172546591 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/309761-1172546591/march_ks /tmp/evaluation/309761-1172546591/instance-309761-1172546591.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: 1.04 1.01 0.98 3/77 21377
/proc/meminfo: memFree=1391328/2055920 swapFree=4192812/4192956
[pid=21377] ppid=21375 vsize=916 CPUtime=0
/proc/21377/stat : 21377 (march_ks) R 21375 21377 19741 0 -1 4194304 123 0 0 0 0 0 0 0 18 0 1 0 274613988 937984 107 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21377/statm: 229 110 48 123 0 104 0

[startup+0.107335 s]
/proc/loadavg: 1.04 1.01 0.98 3/77 21377
/proc/meminfo: memFree=1391328/2055920 swapFree=4192812/4192956
[pid=21377] ppid=21375 vsize=1644 CPUtime=0.1
/proc/21377/stat : 21377 (march_ks) R 21375 21377 19741 0 -1 4194304 352 0 0 0 10 0 0 0 18 0 1 0 274613988 1683456 334 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526476 0 0 4096 0 0 0 0 17 1 0 0
/proc/21377/statm: 411 334 73 123 0 286 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1644

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

[startup+0.413364 s]
/proc/loadavg: 1.04 1.01 0.98 3/77 21377
/proc/meminfo: memFree=1391328/2055920 swapFree=4192812/4192956
[pid=21377] ppid=21375 vsize=1776 CPUtime=0.4
/proc/21377/stat : 21377 (march_ks) R 21375 21377 19741 0 -1 4194304 373 0 0 0 40 0 0 0 20 0 1 0 274613988 1818624 355 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21377/statm: 444 355 73 123 0 319 0
Current children cumulated CPU time (s) 0.4
Current children cumulated vsize (KiB) 1776

Child status: 10
Real time (s): 0.446398
CPU time (s): 0.446931
CPU user time (s): 0.441932
CPU system time (s): 0.004999
CPU usage (%): 100.119
Max. virtual memory (cumulated for all children) (KiB): 1776

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.441932
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 379
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= 0

runsolver used 0.001999 second user time and 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node4 on Tue Feb 27 03:23:11 UTC 2007

IDJOB= 309761
IDBENCH= 20269
IDSOLVER= 111
FILE ID= node4/309761-1172546591

PBS_JOBID= 3971637

Free space on /tmp= 66553 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v810/unif2p-p0.9-v810-c2932-S1014417748-14-SAT.cnf
COMMAND LINE= /tmp/evaluation/309761-1172546591/march_ks /tmp/evaluation/309761-1172546591/instance-309761-1172546591.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node4/watcher-309761-1172546591 -o ROOT/results/node4/solver-309761-1172546591 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/309761-1172546591/march_ks /tmp/evaluation/309761-1172546591/instance-309761-1172546591.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  12c6ae21cea692230c5e45227dcf3ab1

RANDOM SEED= 505798847

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node4.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		: 3000.231
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		: 3000.231
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:       1391736 kB
Buffers:         60132 kB
Cached:         465440 kB
SwapCached:          0 kB
Active:         288616 kB
Inactive:       297220 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1391736 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2324 kB
Writeback:           0 kB
Mapped:          79164 kB
Slab:            63812 kB
Committed_AS:  1064612 kB
PageTables:       1772 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= 66553 MiB

End job on node4 on Tue Feb 27 03:23:12 UTC 2007