Trace number 3096176

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 0.162974 0.164135

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S456969343-019.SATISFIABLE.cnf
MD5SUM957c55bb21add5f7b2abfbda860d1a95
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.05599
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 

0.09/0.16	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.16	c input CNF file=HOME/instance-3096176-1301754053.cnf 
0.09/0.16	c var#=800 clause#=3408 
0.09/0.16	c clause#=3408 var#=800 ratio=4 
0.09/0.16	c Unsat#=         3 flip#=      2340 
0.09/0.16	c Unsat#=         2 flip#=      7717 
0.09/0.16	c Unsat#=         1 flip#=     21530 
0.09/0.16	c Unsat#=         0 flip#=    152266 
0.09/0.16	c try 1-th flip# 152266
0.09/0.16	c A solution is found
0.09/0.16	c verified 
0.09/0.16	s SATISFIABLE
0.09/0.16	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 
0.09/0.16	v 0
0.09/0.16	c Done (Running cputime is 0.154 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-3096176-1301754053/watcher-3096176-1301754053 -o /tmp/evaluation-result-3096176-1301754053/solver-3096176-1301754053 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096176-1301754053.cnf 

running on 2 cores: 4,6

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: 4.01 4.00 3.93 4/189 24245
/proc/meminfo: memFree=20911740/32951124 swapFree=67111524/67111528
[pid=24245] ppid=24243 vsize=3120 CPUtime=0 cores=4,6
/proc/24245/stat : 24245 (MultiFlip) R 24243 24245 23275 0 -1 4202496 366 0 0 0 0 0 0 0 25 0 1 0 365635813 3194880 304 33554432000 134512640 134540672 4287828720 18446744073709551615 134537159 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/24245/statm: 780 304 217 7 0 137 0

[startup+0.0142271 s]
/proc/loadavg: 4.01 4.00 3.93 4/189 24245
/proc/meminfo: memFree=20911740/32951124 swapFree=67111524/67111528
[pid=24245] ppid=24243 vsize=3120 CPUtime=0.01 cores=4,6
/proc/24245/stat : 24245 (MultiFlip) R 24243 24245 23275 0 -1 4202496 393 0 0 0 1 0 0 0 25 0 1 0 365635813 3194880 331 33554432000 134512640 134540672 4287828720 18446744073709551615 134524706 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/24245/statm: 780 331 219 7 0 137 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 3120

[startup+0.100249 s]
/proc/loadavg: 4.01 4.00 3.93 4/189 24245
/proc/meminfo: memFree=20911740/32951124 swapFree=67111524/67111528
[pid=24245] ppid=24243 vsize=3120 CPUtime=0.09 cores=4,6
/proc/24245/stat : 24245 (MultiFlip) R 24243 24245 23275 0 -1 4202496 402 0 0 0 9 0 0 0 25 0 1 0 365635813 3194880 340 33554432000 134512640 134540672 4287828720 18446744073709551615 134523815 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/24245/statm: 780 340 220 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): 0.164135
CPU time (s): 0.162974
CPU user time (s): 0.161975
CPU system time (s): 0.000999
CPU usage (%): 99.2927
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.161975
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= 12
involuntary context switches= 2

runsolver used 0.000999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node111 at 2011-04-02 16:20:53
IDJOB=3096176
IDBENCH=82858
IDSOLVER=1523
FILE ID=node111/3096176-1301754053
RUNJOBID= node111-1301748572-23294
PBS_JOBID= 12841026
Free space on /tmp= 71244 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S456969343-019.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096176-1301754053/watcher-3096176-1301754053 -o /tmp/evaluation-result-3096176-1301754053/solver-3096176-1301754053 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096176-1301754053.cnf

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

MD5SUM BENCH= 957c55bb21add5f7b2abfbda860d1a95
RANDOM SEED=141225678

node111.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		: 2666.849
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	: 5333.69
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		: 2666.849
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	: 5428.12
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		: 2666.849
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		: 2666.849
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	: 5332.86
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		: 2666.849
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	: 5332.75
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		: 2666.849
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		: 2666.849
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	: 5332.67
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		: 2666.849
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:      20912020 kB
Buffers:        349408 kB
Cached:       11326264 kB
SwapCached:          4 kB
Active:        7285600 kB
Inactive:      4459720 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20912020 kB
SwapTotal:    67111528 kB
SwapFree:     67111524 kB
Dirty:              28 kB
Writeback:           0 kB
AnonPages:       69908 kB
Mapped:          16152 kB
Slab:           230356 kB
PageTables:       5224 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   252404 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= 71244 MiB
End job on node111 at 2011-04-02 16:20:54