Trace number 3096289

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 0.312951 0.316382

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S890760919-021.SATISFIABLE.cnf
MD5SUM17e7946cc73ece994e4c474e2407ffbb
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.06099
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 

0.29/0.31	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.29/0.31	c input CNF file=HOME/instance-3096289-1301758364.cnf 
0.29/0.31	c var#=800 clause#=3408 
0.29/0.31	c clause#=3408 var#=800 ratio=4 
0.29/0.31	c Unsat#=         3 flip#=      9129 
0.29/0.31	c Unsat#=         2 flip#=     11391 
0.29/0.31	c Unsat#=         1 flip#=     30909 
0.29/0.31	c Unsat#=         0 flip#=    418291 
0.29/0.31	c try 1-th flip# 418291
0.29/0.31	c A solution is found
0.29/0.31	c verified 
0.29/0.31	s SATISFIABLE
0.29/0.31	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 
0.29/0.31	v 0
0.29/0.31	c Done (Running cputime is 0.304 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-3096289-1301758364/watcher-3096289-1301758364 -o /tmp/evaluation-result-3096289-1301758364/solver-3096289-1301758364 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096289-1301758364.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: 3.79 3.97 3.89 3/187 15613
/proc/meminfo: memFree=21555152/32950928 swapFree=67111528/67111528
[pid=15613] ppid=15611 vsize=2992 CPUtime=0 cores=1,3
/proc/15613/stat : 15613 (MultiFlip) R 15611 15613 15327 0 -1 4202496 333 0 0 0 0 0 0 0 25 0 1 0 287435106 3063808 273 33554432000 134512640 134540672 4293551616 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15613/statm: 748 274 215 7 0 105 0

[startup+0.00713893 s]
/proc/loadavg: 3.79 3.97 3.89 3/187 15613
/proc/meminfo: memFree=21555152/32950928 swapFree=67111528/67111528
[pid=15613] ppid=15611 vsize=2992 CPUtime=0 cores=1,3
/proc/15613/stat : 15613 (MultiFlip) R 15611 15613 15327 0 -1 4202496 349 0 0 0 0 0 0 0 25 0 1 0 287435106 3063808 289 33554432000 134512640 134540672 4293551616 18446744073709551615 4528249 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15613/statm: 748 289 215 7 0 105 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 2992

[startup+0.100185 s]
/proc/loadavg: 3.79 3.97 3.89 3/187 15613
/proc/meminfo: memFree=21555152/32950928 swapFree=67111528/67111528
[pid=15613] ppid=15611 vsize=3120 CPUtime=0.09 cores=1,3
/proc/15613/stat : 15613 (MultiFlip) R 15611 15613 15327 0 -1 4202496 402 0 0 0 9 0 0 0 25 0 1 0 287435106 3194880 341 33554432000 134512640 134540672 4293551616 18446744073709551615 134524247 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15613/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3120

[startup+0.300166 s]
/proc/loadavg: 3.79 3.97 3.89 3/187 15613
/proc/meminfo: memFree=21555152/32950928 swapFree=67111528/67111528
[pid=15613] ppid=15611 vsize=3120 CPUtime=0.29 cores=1,3
/proc/15613/stat : 15613 (MultiFlip) R 15611 15613 15327 0 -1 4202496 402 0 0 0 29 0 0 0 25 0 1 0 287435106 3194880 341 33554432000 134512640 134540672 4293551616 18446744073709551615 134522985 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15613/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3120

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

Child status: 10
Real time (s): 0.316382
CPU time (s): 0.312951
CPU user time (s): 0.311952
CPU system time (s): 0.000999
CPU usage (%): 98.9155
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.311952
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= 427
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 0.001999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node126 at 2011-04-02 17:32:44
IDJOB=3096289
IDBENCH=82971
IDSOLVER=1523
FILE ID=node126/3096289-1301758364
RUNJOBID= node126-1301757062-15347
PBS_JOBID= 12841073
Free space on /tmp= 71688 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S890760919-021.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096289-1301758364/watcher-3096289-1301758364 -o /tmp/evaluation-result-3096289-1301758364/solver-3096289-1301758364 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096289-1301758364.cnf

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

MD5SUM BENCH= 17e7946cc73ece994e4c474e2407ffbb
RANDOM SEED=1200197076

node126.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		: 2666.783
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	: 5333.56
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		: 2666.783
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	: 5332.75
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		: 2666.783
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	: 5332.74
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		: 2666.783
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	: 5332.74
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		: 2666.783
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	: 5332.80
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		: 2666.783
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	: 5332.75
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		: 2666.783
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	: 5332.82
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		: 2666.783
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	: 5332.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      21555432 kB
Buffers:        349396 kB
Cached:       10712188 kB
SwapCached:          0 kB
Active:        7245536 kB
Inactive:      3882524 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      21555432 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              12 kB
Writeback:           0 kB
AnonPages:       66936 kB
Mapped:          16108 kB
Slab:           204116 kB
PageTables:       5168 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   263192 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= 71688 MiB
End job on node126 at 2011-04-02 17:32:45