Trace number 3096125

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 0.441931 0.443122

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S973075635-083.SATISFIABLE.cnf
MD5SUM72699a729b1b1ff68f424bd0209fc31b
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.031994
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 

0.39/0.44	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.39/0.44	c input CNF file=HOME/instance-3096125-1301753481.cnf 
0.39/0.44	c var#=750 clause#=3195 
0.39/0.44	c clause#=3195 var#=750 ratio=4 
0.39/0.44	c Unsat#=         3 flip#=     14614 
0.39/0.44	c Unsat#=         2 flip#=     48590 
0.39/0.44	c Unsat#=         1 flip#=     50907 
0.39/0.44	c Unsat#=         0 flip#=    615054 
0.39/0.44	c try 1-th flip# 615054
0.39/0.44	c A solution is found
0.39/0.44	c verified 
0.39/0.44	s SATISFIABLE
0.39/0.44	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 
0.39/0.44	v 0
0.39/0.44	c Done (Running cputime is 0.433 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-3096125-1301753481/watcher-3096125-1301753481 -o /tmp/evaluation-result-3096125-1301753481/solver-3096125-1301753481 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096125-1301753481.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: 4.00 4.00 3.92 4/189 8491
/proc/meminfo: memFree=19397108/32951124 swapFree=67111528/67111528
[pid=8491] ppid=8489 vsize=3112 CPUtime=0 cores=0,2
/proc/8491/stat : 8491 (MultiFlip) R 8489 8491 7835 0 -1 4202496 361 0 0 0 0 0 0 0 25 0 1 0 365578708 3186688 300 33554432000 134512640 134540672 4288001536 18446744073709551615 6002172 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/8491/statm: 778 300 217 7 0 135 0

[startup+0.0153881 s]
/proc/loadavg: 4.00 4.00 3.92 4/189 8491
/proc/meminfo: memFree=19397108/32951124 swapFree=67111528/67111528
[pid=8491] ppid=8489 vsize=3112 CPUtime=0.01 cores=0,2
/proc/8491/stat : 8491 (MultiFlip) R 8489 8491 7835 0 -1 4202496 387 0 0 0 1 0 0 0 25 0 1 0 365578708 3186688 326 33554432000 134512640 134540672 4288001536 18446744073709551615 134524745 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/8491/statm: 778 326 219 7 0 135 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 3112

[startup+0.100433 s]
/proc/loadavg: 4.00 4.00 3.92 4/189 8491
/proc/meminfo: memFree=19397108/32951124 swapFree=67111528/67111528
[pid=8491] ppid=8489 vsize=3112 CPUtime=0.09 cores=0,2
/proc/8491/stat : 8491 (MultiFlip) R 8489 8491 7835 0 -1 4202496 397 0 0 0 9 0 0 0 25 0 1 0 365578708 3186688 336 33554432000 134512640 134540672 4288001536 18446744073709551615 134524180 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/8491/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300396 s]
/proc/loadavg: 4.00 4.00 3.92 4/189 8491
/proc/meminfo: memFree=19397108/32951124 swapFree=67111528/67111528
[pid=8491] ppid=8489 vsize=3112 CPUtime=0.29 cores=0,2
/proc/8491/stat : 8491 (MultiFlip) R 8489 8491 7835 0 -1 4202496 397 0 0 0 29 0 0 0 25 0 1 0 365578708 3186688 336 33554432000 134512640 134540672 4288001536 18446744073709551615 134523539 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/8491/statm: 778 336 220 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

[startup+0.400388 s]
/proc/loadavg: 4.00 4.00 3.92 4/189 8491
/proc/meminfo: memFree=19397108/32951124 swapFree=67111528/67111528
[pid=8491] ppid=8489 vsize=3112 CPUtime=0.39 cores=0,2
/proc/8491/stat : 8491 (MultiFlip) R 8489 8491 7835 0 -1 4202496 397 0 0 0 39 0 0 0 25 0 1 0 365578708 3186688 336 33554432000 134512640 134540672 4288001536 18446744073709551615 134524000 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/8491/statm: 778 336 220 7 0 135 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.443122
CPU time (s): 0.441931
CPU user time (s): 0.440932
CPU system time (s): 0.000999
CPU usage (%): 99.7312
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.440932
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= 421
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= 4

runsolver used 0 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node110 at 2011-04-02 16:11:21
IDJOB=3096125
IDBENCH=82807
IDSOLVER=1523
FILE ID=node110/3096125-1301753481
RUNJOBID= node110-1301748572-7853
PBS_JOBID= 12841027
Free space on /tmp= 71120 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S973075635-083.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096125-1301753481/watcher-3096125-1301753481 -o /tmp/evaluation-result-3096125-1301753481/solver-3096125-1301753481 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096125-1301753481.cnf

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

MD5SUM BENCH= 72699a729b1b1ff68f424bd0209fc31b
RANDOM SEED=804596582

node110.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		: 2666.830
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		: 2666.830
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	: 5332.83
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		: 2666.830
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		: 2666.830
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	: 5332.83
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		: 2666.830
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	: 5332.76
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		: 2666.830
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		: 2666.830
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	: 5332.74
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		: 2666.830
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:      19397372 kB
Buffers:        395072 kB
Cached:       12777460 kB
SwapCached:          0 kB
Active:        8455296 kB
Inactive:      4785396 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      19397372 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              24 kB
Writeback:           0 kB
AnonPages:       68176 kB
Mapped:          16148 kB
Slab:           248892 kB
PageTables:       5244 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   255024 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= 71120 MiB
End job on node110 at 2011-04-02 16:11:22