Trace number 3096310

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 0.415936 0.418795

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S1863077195-052.SATISFIABLE.cnf
MD5SUM95ba8379aa2e59896c8d6334d91cdeab
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables700
Number of clauses2982
Sum of the clauses size8946
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32982
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.39/0.41	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.39/0.41	c input CNF file=HOME/instance-3096310-1301758431.cnf 
0.39/0.41	c var#=700 clause#=2982 
0.39/0.41	c clause#=2982 var#=700 ratio=4 
0.39/0.41	c Unsat#=         3 flip#=      6982 
0.39/0.41	c Unsat#=         2 flip#=     20213 
0.39/0.41	c Unsat#=         1 flip#=    328692 
0.39/0.41	c Unsat#=         0 flip#=    645528 
0.39/0.41	c try 1-th flip# 645528
0.39/0.41	c A solution is found
0.39/0.41	c verified 
0.39/0.41	s SATISFIABLE
0.39/0.41	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 
0.39/0.41	v 0
0.39/0.41	c Done (Running cputime is 0.407 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-3096310-1301758431/watcher-3096310-1301758431 -o /tmp/evaluation-result-3096310-1301758431/solver-3096310-1301758431 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096310-1301758431.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: 3.78 3.95 3.89 5/189 27949
/proc/meminfo: memFree=22670752/32951124 swapFree=67111528/67111528
[pid=27949] ppid=27947 vsize=2984 CPUtime=0 cores=5,7
/proc/27949/stat : 27949 (MultiFlip) R 27947 27949 27553 0 -1 4202496 339 0 0 0 0 0 0 0 25 0 1 0 287443824 3055616 279 33554432000 134512640 134540672 4292590752 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27949/statm: 746 280 215 7 0 103 0

[startup+0.094559 s]
/proc/loadavg: 3.78 3.95 3.89 5/189 27949
/proc/meminfo: memFree=22670752/32951124 swapFree=67111528/67111528
[pid=27949] ppid=27947 vsize=3112 CPUtime=0.08 cores=5,7
/proc/27949/stat : 27949 (MultiFlip) R 27947 27949 27553 0 -1 4202496 390 0 0 0 8 0 0 0 25 0 1 0 287443824 3186688 329 33554432000 134512640 134540672 4292590752 18446744073709551615 134523446 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27949/statm: 778 329 220 7 0 135 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 3112

[startup+0.10056 s]
/proc/loadavg: 3.78 3.95 3.89 5/189 27949
/proc/meminfo: memFree=22670752/32951124 swapFree=67111528/67111528
[pid=27949] ppid=27947 vsize=3112 CPUtime=0.09 cores=5,7
/proc/27949/stat : 27949 (MultiFlip) R 27947 27949 27553 0 -1 4202496 390 0 0 0 9 0 0 0 25 0 1 0 287443824 3186688 329 33554432000 134512640 134540672 4292590752 18446744073709551615 134523995 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27949/statm: 778 329 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300524 s]
/proc/loadavg: 3.78 3.95 3.89 5/189 27949
/proc/meminfo: memFree=22670752/32951124 swapFree=67111528/67111528
[pid=27949] ppid=27947 vsize=3112 CPUtime=0.29 cores=5,7
/proc/27949/stat : 27949 (MultiFlip) R 27947 27949 27553 0 -1 4202496 390 0 0 0 29 0 0 0 25 0 1 0 287443824 3186688 329 33554432000 134512640 134540672 4292590752 18446744073709551615 134527028 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27949/statm: 778 329 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

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

[startup+0.400516 s]
/proc/loadavg: 3.78 3.95 3.89 5/189 27949
/proc/meminfo: memFree=22670752/32951124 swapFree=67111528/67111528
[pid=27949] ppid=27947 vsize=3112 CPUtime=0.39 cores=5,7
/proc/27949/stat : 27949 (MultiFlip) R 27947 27949 27553 0 -1 4202496 390 0 0 0 39 0 0 0 25 0 1 0 287443824 3186688 329 33554432000 134512640 134540672 4292590752 18446744073709551615 134523288 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27949/statm: 778 329 220 7 0 135 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.418795
CPU time (s): 0.415936
CPU user time (s): 0.412937
CPU system time (s): 0.002999
CPU usage (%): 99.3173
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.412937
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 413
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 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node109 at 2011-04-02 17:33:51
IDJOB=3096310
IDBENCH=82992
IDSOLVER=1523
FILE ID=node109/3096310-1301758431
RUNJOBID= node109-1301757124-27574
PBS_JOBID= 12841080
Free space on /tmp= 72060 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S1863077195-052.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096310-1301758431/watcher-3096310-1301758431 -o /tmp/evaluation-result-3096310-1301758431/solver-3096310-1301758431 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096310-1301758431.cnf

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

MD5SUM BENCH= 95ba8379aa2e59896c8d6334d91cdeab
RANDOM SEED=1183717662

node109.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		: 2666.809
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	: 5333.61
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      22670900 kB
Buffers:        344640 kB
Cached:        9604676 kB
SwapCached:          0 kB
Active:        5978168 kB
Inactive:      4037796 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22670900 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             868 kB
Writeback:           0 kB
AnonPages:       66724 kB
Mapped:          16164 kB
Slab:           202024 kB
PageTables:       5216 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   252684 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= 72060 MiB
End job on node109 at 2011-04-02 17:33:51