Trace number 3096078

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 0.107982 0.108871

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S1831593686-090.SATISFIABLE.cnf
MD5SUM7dd850f670e1c9ea63e995ef24dddf5f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.06399
Satisfiable
(Un)Satisfiability was proved
Number of variables800
Number of clauses3408
Sum of the clauses size10224
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 33408
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.09/0.10	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.10	c input CNF file=HOME/instance-3096078-1301752660.cnf 
0.09/0.10	c var#=800 clause#=3408 
0.09/0.10	c clause#=3408 var#=800 ratio=4 
0.09/0.10	c Unsat#=         3 flip#=      8025 
0.09/0.10	c Unsat#=         2 flip#=     27667 
0.09/0.10	c Unsat#=         1 flip#=     77626 
0.09/0.10	c Unsat#=         0 flip#=     80093 
0.09/0.10	c try 1-th flip# 80093
0.09/0.10	c A solution is found
0.09/0.10	c verified 
0.09/0.10	s SATISFIABLE
0.09/0.10	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 
0.09/0.10	v 0
0.09/0.10	c Done (Running cputime is 0.099 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-3096078-1301752660/watcher-3096078-1301752660 -o /tmp/evaluation-result-3096078-1301752660/solver-3096078-1301752660 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096078-1301752660.cnf 

running on 2 cores: 5,7

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: 3.92 3.98 3.91 4/189 6400
/proc/meminfo: memFree=18960436/32950928 swapFree=67111528/67111528
[pid=6400] ppid=6398 vsize=3120 CPUtime=0 cores=5,7
/proc/6400/stat : 6400 (MultiFlip) R 6398 6400 5642 0 -1 4202496 366 0 0 0 0 0 0 0 25 0 1 0 365496636 3194880 305 33554432000 134512640 134540672 4290943696 18446744073709551615 134538696 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/6400/statm: 780 305 217 7 0 137 0

[startup+0.085548 s]
/proc/loadavg: 3.92 3.98 3.91 4/189 6400
/proc/meminfo: memFree=18960436/32950928 swapFree=67111528/67111528
[pid=6400] ppid=6398 vsize=3120 CPUtime=0.08 cores=5,7
/proc/6400/stat : 6400 (MultiFlip) R 6398 6400 5642 0 -1 4202496 402 0 0 0 8 0 0 0 25 0 1 0 365496636 3194880 341 33554432000 134512640 134540672 4290943696 18446744073709551615 134527093 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/6400/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 3120

[startup+0.100545 s]
/proc/loadavg: 3.92 3.98 3.91 4/189 6400
/proc/meminfo: memFree=18960436/32950928 swapFree=67111528/67111528
[pid=6400] ppid=6398 vsize=3120 CPUtime=0.09 cores=5,7
/proc/6400/stat : 6400 (MultiFlip) R 6398 6400 5642 0 -1 4202496 402 0 0 0 9 0 0 0 25 0 1 0 365496636 3194880 341 33554432000 134512640 134540672 4290943696 18446744073709551615 134522932 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/6400/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3120

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

Child status: 10
Real time (s): 0.108871
CPU time (s): 0.107982
CPU user time (s): 0.106983
CPU system time (s): 0.000999
CPU usage (%): 99.1835
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.106983
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= 428
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= 0

runsolver used 0 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node112 at 2011-04-02 15:57:40
IDJOB=3096078
IDBENCH=82760
IDSOLVER=1523
FILE ID=node112/3096078-1301752660
RUNJOBID= node112-1301748572-5663
PBS_JOBID= 12841025
Free space on /tmp= 71948 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S1831593686-090.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096078-1301752660/watcher-3096078-1301752660 -o /tmp/evaluation-result-3096078-1301752660/solver-3096078-1301752660 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096078-1301752660.cnf

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

MD5SUM BENCH= 7dd850f670e1c9ea63e995ef24dddf5f
RANDOM SEED=1158785770

node112.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		: 2666.828
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	: 5333.65
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		: 2666.828
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		: 2666.828
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	: 5332.67
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		: 2666.828
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	: 5332.82
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		: 2666.828
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	: 5261.27
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		: 2666.828
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	: 5332.82
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		: 2666.828
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		: 2666.828
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	: 5332.93
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      18960468 kB
Buffers:        385720 kB
Cached:       13246212 kB
SwapCached:          0 kB
Active:        8049792 kB
Inactive:      5651064 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      18960468 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:               0 kB
Writeback:           0 kB
AnonPages:       68920 kB
Mapped:          16204 kB
Slab:           225540 kB
PageTables:       5176 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   251524 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= 71948 MiB
End job on node112 at 2011-04-02 15:57:40