Trace number 3096089

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 0.129979 0.133245

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v750-c3195-S664770261-061.SATISFIABLE.cnf
MD5SUM786afedaa52bbc0b93f9aff94029b9c0
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.038994
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 

0.09/0.13	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.09/0.13	c input CNF file=HOME/instance-3096089-1301752811.cnf 
0.09/0.13	c var#=750 clause#=3195 
0.09/0.13	c clause#=3195 var#=750 ratio=4 
0.09/0.13	c Unsat#=         3 flip#=     46931 
0.09/0.13	c Unsat#=         2 flip#=     47430 
0.09/0.13	c Unsat#=         1 flip#=     48086 
0.09/0.13	c Unsat#=         0 flip#=    107131 
0.09/0.13	c try 1-th flip# 107131
0.09/0.13	c A solution is found
0.09/0.13	c verified 
0.09/0.13	s SATISFIABLE
0.09/0.13	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 
0.09/0.13	v 0
0.09/0.13	c Done (Running cputime is 0.120 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-3096089-1301752811/watcher-3096089-1301752811 -o /tmp/evaluation-result-3096089-1301752811/solver-3096089-1301752811 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096089-1301752811.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 4.01 3.95 5/189 17678
/proc/meminfo: memFree=20069584/32951124 swapFree=67111528/67111528
[pid=17678] ppid=17676 vsize=2984 CPUtime=0 cores=0,2
/proc/17678/stat : 17678 (MultiFlip) R 17676 17678 16916 0 -1 4202496 328 0 0 0 0 0 0 0 25 0 1 0 267696453 3055616 267 33554432000 134512640 134540672 4291171408 18446744073709551615 9586172 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/17678/statm: 746 267 215 7 0 103 0

[startup+0.0358669 s]
/proc/loadavg: 3.93 4.01 3.95 5/189 17678
/proc/meminfo: memFree=20069584/32951124 swapFree=67111528/67111528
[pid=17678] ppid=17676 vsize=3112 CPUtime=0.03 cores=0,2
/proc/17678/stat : 17678 (MultiFlip) R 17676 17678 16916 0 -1 4202496 387 0 0 0 3 0 0 0 25 0 1 0 267696453 3186688 325 33554432000 134512640 134540672 4291171408 18446744073709551615 134524800 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/17678/statm: 778 325 219 7 0 135 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3112

[startup+0.100883 s]
/proc/loadavg: 3.93 4.01 3.95 5/189 17678
/proc/meminfo: memFree=20069584/32951124 swapFree=67111528/67111528
[pid=17678] ppid=17676 vsize=3112 CPUtime=0.09 cores=0,2
/proc/17678/stat : 17678 (MultiFlip) R 17676 17678 16916 0 -1 4202496 397 0 0 0 9 0 0 0 25 0 1 0 267696453 3186688 335 33554432000 134512640 134540672 4291171408 18446744073709551615 134526628 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/17678/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

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

Child status: 10
Real time (s): 0.133245
CPU time (s): 0.129979
CPU user time (s): 0.12898
CPU system time (s): 0.000999
CPU usage (%): 97.5488
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.12898
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= 422
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 0.004999 second user time and 0.001999 second system time

The end

Launcher Data 

Begin job on node140 at 2011-04-02 16:00:11
IDJOB=3096089
IDBENCH=82771
IDSOLVER=1523
FILE ID=node140/3096089-1301752811
RUNJOBID= node140-1301748572-16934
PBS_JOBID= 12840998
Free space on /tmp= 71528 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v750-c3195-S664770261-061.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096089-1301752811/watcher-3096089-1301752811 -o /tmp/evaluation-result-3096089-1301752811/solver-3096089-1301752811 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096089-1301752811.cnf

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

MD5SUM BENCH= 786afedaa52bbc0b93f9aff94029b9c0
RANDOM SEED=804596582

node140.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		: 2666.833
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		: 2666.833
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	: 5226.14
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		: 2666.833
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		: 2666.833
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	: 5332.77
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		: 2666.833
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		: 2666.833
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	: 5332.74
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		: 2666.833
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		: 2666.833
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:      20069848 kB
Buffers:        362680 kB
Cached:       12161628 kB
SwapCached:          0 kB
Active:        7469268 kB
Inactive:      5133944 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      20069848 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              20 kB
Writeback:           0 kB
AnonPages:       78460 kB
Mapped:          16148 kB
Slab:           213428 kB
PageTables:       5248 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   259384 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= 71528 MiB
End job on node140 at 2011-04-02 16:00:12