Trace number 372009

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 2.37864 2.38115

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S1804595013-08-SAT.cnf
MD5SUM349353060fd2d6c47e7784aed8d6092f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.656899
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
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 630 variables and 2280 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, 33 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 622 free variables and 2247 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.615
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 89 duplicate clauses
0.00/0.02	c resolvent_look() :: found 40 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 630 variables and 2287 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 630 variabels and 2287 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2287 / 630 ) = 3.63
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: 114 JD: 13
0.10/0.13	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 1 NC: 1005 JD: 13
1.00/1.04	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |***********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
2.29/2.37	c solution bin :: 0000100000100.0101101000000000000
2.29/2.37	c direction branchin :: current_rights = 6
2.29/2.37	
c |*************************************************************
2.29/2.37	c
2.29/2.37	c main():: nodeCount: 2409
2.29/2.37	c main():: dead ends in main: 19
2.29/2.37	c main():: lookAheadCount: 301479
2.29/2.37	c main():: unitResolveCount: 41786
2.29/2.37	c main():: time=2.370000
2.29/2.37	c main():: necessary_assignments: 1187
2.29/2.37	c main():: bin_sat: 0, bin_unsat 0
2.29/2.37	c main():: doublelook: #: 12696, succes #: 9528
2.29/2.37	c main():: doublelook: overall 4.323 of all possible doublelooks executed
2.29/2.37	c main():: doublelook: succesrate: 75.047, average DL_trigger: 8093.529
2.29/2.37	c main():: SOLUTION VERIFIED :-)
2.29/2.37	s SATISFIABLE
2.29/2.37	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 0

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node21/watcher-372009-1177549332 -o ROOT/results/node21/solver-372009-1177549332 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/372009-1177549332/march_ks /tmp/evaluation/372009-1177549332/instance-372009-1177549332.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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: 0.65 0.88 0.88 3/77 8806
/proc/meminfo: memFree=1898984/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=928 CPUtime=0
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 136 0 0 0 0 0 0 0 18 0 1 0 202850540 950272 119 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134687937 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 232 119 49 123 0 107 0

[startup+0.0562211 s]
/proc/loadavg: 0.65 0.88 0.88 3/77 8806
/proc/meminfo: memFree=1898984/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1380 CPUtime=0.05
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 293 0 0 0 5 0 0 0 18 0 1 0 202850540 1413120 276 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134548041 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 345 276 73 123 0 220 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 1380

[startup+0.102225 s]
/proc/loadavg: 0.65 0.88 0.88 3/77 8806
/proc/meminfo: memFree=1898984/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1512 CPUtime=0.1
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 304 0 0 0 10 0 0 0 18 0 1 0 202850540 1548288 287 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 378 287 73 123 0 253 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1512

[startup+0.302247 s]
/proc/loadavg: 0.65 0.88 0.88 3/77 8806
/proc/meminfo: memFree=1898984/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1512 CPUtime=0.3
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 318 0 0 0 30 0 0 0 19 0 1 0 202850540 1548288 301 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134597206 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 378 301 73 123 0 253 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1512

[startup+0.701293 s]
/proc/loadavg: 0.65 0.88 0.88 3/77 8806
/proc/meminfo: memFree=1898984/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1512 CPUtime=0.69
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 328 0 0 0 69 0 0 0 23 0 1 0 202850540 1548288 311 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538160 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 378 311 73 123 0 253 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1512

[startup+1.50138 s]
/proc/loadavg: 0.65 0.88 0.88 2/78 8807
/proc/meminfo: memFree=1898016/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1644 CPUtime=1.49
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 343 0 0 0 149 0 0 0 25 0 1 0 202850540 1683456 326 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526478 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 411 326 73 123 0 286 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1644

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

[startup+1.90143 s]
/proc/loadavg: 0.65 0.88 0.88 2/78 8807
/proc/meminfo: memFree=1898016/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1644 CPUtime=1.89
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 346 0 0 0 189 0 0 0 25 0 1 0 202850540 1683456 329 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134525870 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 411 329 73 123 0 286 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 1644

[startup+2.30147 s]
/proc/loadavg: 0.65 0.88 0.88 2/78 8807
/proc/meminfo: memFree=1897824/2055920 swapFree=4155588/4192956
[pid=8806] ppid=8804 vsize=1644 CPUtime=2.29
/proc/8806/stat : 8806 (march_ks) R 8804 8806 7616 0 -1 4194304 349 0 0 0 229 0 0 0 25 0 1 0 202850540 1683456 332 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134542401 0 0 4096 0 0 0 0 17 1 0 0
/proc/8806/statm: 411 332 73 123 0 286 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 1644

Child status: 10
Real time (s): 2.38115
CPU time (s): 2.37864
CPU user time (s): 2.37664
CPU system time (s): 0.001999
CPU usage (%): 99.8945
Max. virtual memory (cumulated for all children) (KiB): 1644

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.37664
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= 352
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= 50

runsolver used 0.002999 second user time and 0.011998 second system time

The end

Launcher Data (download as text)

Begin job on node21 on Thu Apr 26 01:02:12 UTC 2007

IDJOB= 372009
IDBENCH= 20293
IDSOLVER= 180
FILE ID= node21/372009-1177549332

PBS_JOBID= 4696564

Free space on /tmp= 66389 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S1804595013-08-SAT.cnf
COMMAND LINE= /tmp/evaluation/372009-1177549332/march_ks /tmp/evaluation/372009-1177549332/instance-372009-1177549332.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node21/watcher-372009-1177549332 -o ROOT/results/node21/solver-372009-1177549332 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/372009-1177549332/march_ks /tmp/evaluation/372009-1177549332/instance-372009-1177549332.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  349353060fd2d6c47e7784aed8d6092f

RANDOM SEED= 667340050

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node21.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		: 3000.232
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		: 3000.232
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:       1899456 kB
Buffers:         32280 kB
Cached:          55732 kB
SwapCached:      15688 kB
Active:          87964 kB
Inactive:        23852 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1899456 kB
SwapTotal:     4192956 kB
SwapFree:      4155588 kB
Dirty:            2328 kB
Writeback:           0 kB
Mapped:          30208 kB
Slab:            30168 kB
Committed_AS:  1823872 kB
PageTables:       1784 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= 66389 MiB

End job on node21 on Thu Apr 26 01:02:15 UTC 2007