Trace number 3096277

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 0.945856 0.947409

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v650-c2769-S1069233620-009.SATISFIABLE.cnf
MD5SUM31822745c6eca997ddfb1c68091841ad
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.945856
Satisfiable
(Un)Satisfiability was proved
Number of variables650
Number of clauses2769
Sum of the clauses size8307
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32769
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.89/0.94	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.89/0.94	c input CNF file=HOME/instance-3096277-1301758223.cnf 
0.89/0.94	c var#=650 clause#=2769 
0.89/0.94	c clause#=2769 var#=650 ratio=4 
0.89/0.94	c Unsat#=         3 flip#=     13263 
0.89/0.94	c Unsat#=         2 flip#=     18144 
0.89/0.94	c Unsat#=         1 flip#=     33015 
0.89/0.94	c Unsat#=         0 flip#=   1653174 
0.89/0.94	c try 1-th flip# 1653174
0.89/0.94	c A solution is found
0.89/0.94	c verified 
0.89/0.94	s SATISFIABLE
0.89/0.94	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 
0.89/0.94	v 0
0.89/0.94	c Done (Running cputime is 0.939 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-3096277-1301758223/watcher-3096277-1301758223 -o /tmp/evaluation-result-3096277-1301758223/solver-3096277-1301758223 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096277-1301758223.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: 3.76 3.95 3.89 3/187 19419
/proc/meminfo: memFree=21853412/32951124 swapFree=67111528/67111528
[pid=19419] ppid=19417 vsize=3112 CPUtime=0 cores=4,6
/proc/19419/stat : 19419 (MultiFlip) R 19417 19419 19156 0 -1 4202496 372 0 0 0 0 0 0 0 25 0 1 0 268238579 3186688 310 33554432000 134512640 134540672 4294079648 18446744073709551615 11032060 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/19419/statm: 778 311 219 7 0 135 0

[startup+0.0943941 s]
/proc/loadavg: 3.76 3.95 3.89 3/187 19419
/proc/meminfo: memFree=21853412/32951124 swapFree=67111528/67111528
[pid=19419] ppid=19417 vsize=3112 CPUtime=0.09 cores=4,6
/proc/19419/stat : 19419 (MultiFlip) R 19417 19419 19156 0 -1 4202496 386 0 0 0 9 0 0 0 25 0 1 0 268238579 3186688 324 33554432000 134512640 134540672 4294079648 18446744073709551615 134515072 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/19419/statm: 778 324 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.100388 s]
/proc/loadavg: 3.76 3.95 3.89 3/187 19419
/proc/meminfo: memFree=21853412/32951124 swapFree=67111528/67111528
[pid=19419] ppid=19417 vsize=3112 CPUtime=0.09 cores=4,6
/proc/19419/stat : 19419 (MultiFlip) R 19417 19419 19156 0 -1 4202496 386 0 0 0 9 0 0 0 25 0 1 0 268238579 3186688 324 33554432000 134512640 134540672 4294079648 18446744073709551615 134524079 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/19419/statm: 778 324 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300418 s]
/proc/loadavg: 3.76 3.95 3.89 3/187 19419
/proc/meminfo: memFree=21853412/32951124 swapFree=67111528/67111528
[pid=19419] ppid=19417 vsize=3112 CPUtime=0.29 cores=4,6
/proc/19419/stat : 19419 (MultiFlip) R 19417 19419 19156 0 -1 4202496 386 0 0 0 29 0 0 0 25 0 1 0 268238579 3186688 324 33554432000 134512640 134540672 4294079648 18446744073709551615 134523603 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/19419/statm: 778 324 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

[startup+0.70034 s]
/proc/loadavg: 3.76 3.95 3.89 3/187 19419
/proc/meminfo: memFree=21853412/32951124 swapFree=67111528/67111528
[pid=19419] ppid=19417 vsize=3112 CPUtime=0.69 cores=4,6
/proc/19419/stat : 19419 (MultiFlip) R 19417 19419 19156 0 -1 4202496 386 0 0 0 69 0 0 0 25 0 1 0 268238579 3186688 324 33554432000 134512640 134540672 4294079648 18446744073709551615 134524126 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/19419/statm: 778 324 220 7 0 135 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 3112

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

[startup+0.900306 s]
/proc/loadavg: 3.76 3.95 3.89 3/187 19419
/proc/meminfo: memFree=21853412/32951124 swapFree=67111528/67111528
[pid=19419] ppid=19417 vsize=3112 CPUtime=0.89 cores=4,6
/proc/19419/stat : 19419 (MultiFlip) R 19417 19419 19156 0 -1 4202496 386 0 0 0 89 0 0 0 25 0 1 0 268238579 3186688 324 33554432000 134512640 134540672 4294079648 18446744073709551615 134524165 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/19419/statm: 778 324 220 7 0 135 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.947409
CPU time (s): 0.945856
CPU user time (s): 0.945856
CPU system time (s): 0
CPU usage (%): 99.8361
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.945856
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= 408
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= 18

runsolver used 0.002999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node146 at 2011-04-02 17:30:23
IDJOB=3096277
IDBENCH=82959
IDSOLVER=1523
FILE ID=node146/3096277-1301758223
RUNJOBID= node146-1301756921-19175
PBS_JOBID= 12841068
Free space on /tmp= 72164 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v650-c2769-S1069233620-009.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096277-1301758223/watcher-3096277-1301758223 -o /tmp/evaluation-result-3096277-1301758223/solver-3096277-1301758223 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096277-1301758223.cnf

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

MD5SUM BENCH= 31822745c6eca997ddfb1c68091841ad
RANDOM SEED=1744521919

node146.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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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		: 2666.830
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:      21853568 kB
Buffers:        348012 kB
Cached:       10430560 kB
SwapCached:          0 kB
Active:        7098564 kB
Inactive:      3746720 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      21853568 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              20 kB
Writeback:           0 kB
AnonPages:       66832 kB
Mapped:          16100 kB
Slab:           188828 kB
PageTables:       4808 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   261824 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= 72164 MiB
End job on node146 at 2011-04-02 17:30:24