Trace number 3096382

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 0.317951 0.321042

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v800-c3408-S846876765-035.SATISFIABLE.cnf
MD5SUM0d5f032713ed63748b72ef45ba69a269
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 

0.29/0.32	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.29/0.32	c input CNF file=HOME/instance-3096382-1301760758.cnf 
0.29/0.32	c var#=800 clause#=3408 
0.29/0.32	c clause#=3408 var#=800 ratio=4 
0.29/0.32	c Unsat#=         3 flip#=      9100 
0.29/0.32	c Unsat#=         2 flip#=      9247 
0.29/0.32	c Unsat#=         1 flip#=     14507 
0.29/0.32	c Unsat#=         0 flip#=    412331 
0.29/0.32	c try 1-th flip# 412331
0.29/0.32	c A solution is found
0.29/0.32	c verified 
0.29/0.32	s SATISFIABLE
0.29/0.32	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 
0.29/0.32	v 0
0.29/0.32	c Done (Running cputime is 0.310 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-3096382-1301760758/watcher-3096382-1301760758 -o /tmp/evaluation-result-3096382-1301760758/solver-3096382-1301760758 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096382-1301760758.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: 3.93 3.99 3.94 7/187 27211
/proc/meminfo: memFree=21348968/32951124 swapFree=67111528/67111528
[pid=27210] ppid=27207 vsize=2992 CPUtime=0 cores=0,2
/proc/27210/stat : 27210 (MultiFlip) R 27207 27210 26496 0 -1 4202496 346 0 0 0 0 0 0 0 25 0 1 0 268491736 3063808 286 33554432000 134512640 134540672 4293128336 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/27210/statm: 748 286 215 7 0 105 0

[startup+0.050814 s]
/proc/loadavg: 3.93 3.99 3.94 7/187 27211
/proc/meminfo: memFree=21348968/32951124 swapFree=67111528/67111528
[pid=27210] ppid=27207 vsize=3120 CPUtime=0.04 cores=0,2
/proc/27210/stat : 27210 (MultiFlip) R 27207 27210 26496 0 -1 4202496 393 0 0 0 4 0 0 0 25 0 1 0 268491736 3194880 332 33554432000 134512640 134540672 4293128336 18446744073709551615 134524723 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/27210/statm: 780 332 219 7 0 137 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 3120

[startup+0.100842 s]
/proc/loadavg: 3.93 3.99 3.94 7/187 27211
/proc/meminfo: memFree=21348968/32951124 swapFree=67111528/67111528
[pid=27210] ppid=27207 vsize=3120 CPUtime=0.09 cores=0,2
/proc/27210/stat : 27210 (MultiFlip) R 27207 27210 26496 0 -1 4202496 402 0 0 0 9 0 0 0 25 0 1 0 268491736 3194880 341 33554432000 134512640 134540672 4293128336 18446744073709551615 134524027 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/27210/statm: 780 341 220 7 0 137 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3120

[startup+0.300797 s]
/proc/loadavg: 3.93 3.99 3.94 7/187 27211
/proc/meminfo: memFree=21348968/32951124 swapFree=67111528/67111528
[pid=27210] ppid=27207 vsize=3120 CPUtime=0.29 cores=0,2
/proc/27210/stat : 27210 (MultiFlip) R 27207 27210 26496 0 -1 4202496 402 0 0 0 29 0 0 0 25 0 1 0 268491736 3194880 341 33554432000 134512640 134540672 4293128336 18446744073709551615 134530426 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/27210/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): 0.321042
CPU time (s): 0.317951
CPU user time (s): 0.317951
CPU system time (s): 0
CPU usage (%): 99.0372
Max. virtual memory (cumulated for all children) (KiB): 3120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.317951
system time used= 0
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= 10
involuntary context switches= 2

runsolver used 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node147 at 2011-04-02 18:12:38
IDJOB=3096382
IDBENCH=83064
IDSOLVER=1523
FILE ID=node147/3096382-1301760758
RUNJOBID= node147-1301756850-26514
PBS_JOBID= 12841062
Free space on /tmp= 71756 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v800-c3408-S846876765-035.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096382-1301760758/watcher-3096382-1301760758 -o /tmp/evaluation-result-3096382-1301760758/solver-3096382-1301760758 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096382-1301760758.cnf

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

MD5SUM BENCH= 0d5f032713ed63748b72ef45ba69a269
RANDOM SEED=1851789813

node147.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		: 2666.836
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	: 5333.67
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		: 2666.836
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		: 2666.836
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	: 5332.82
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		: 2666.836
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	: 5332.75
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		: 2666.836
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	: 5332.82
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		: 2666.836
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	: 5332.76
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		: 2666.836
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		: 2666.836
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	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      21349124 kB
Buffers:        358492 kB
Cached:       10909260 kB
SwapCached:          0 kB
Active:        7077316 kB
Inactive:      4256616 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      21349124 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              48 kB
Writeback:           0 kB
AnonPages:       66188 kB
Mapped:          16100 kB
Slab:           205692 kB
PageTables:       4840 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   235140 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= 71756 MiB
End job on node147 at 2011-04-02 18:12:39