Trace number 3096198

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 0.055991 0.0561441

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v550-c2343-S960198064-030.SATISFIABLE.cnf
MD5SUM06e5d4421198459b1bb719e60182593d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.004998
Satisfiable
(Un)Satisfiability was proved
Number of variables550
Number of clauses2343
Sum of the clauses size7029
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32343
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.05	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.00/0.05	c input CNF file=HOME/instance-3096198-1301754461.cnf 
0.00/0.05	c var#=550 clause#=2343 
0.00/0.05	c clause#=2343 var#=550 ratio=4 
0.00/0.05	c Unsat#=         3 flip#=     12535 
0.00/0.05	c Unsat#=         2 flip#=     13186 
0.00/0.05	c Unsat#=         1 flip#=     16074 
0.00/0.05	c Unsat#=         0 flip#=     16536 
0.00/0.05	c try 1-th flip# 16536
0.00/0.05	c A solution is found
0.00/0.05	c verified 
0.00/0.05	s SATISFIABLE
0.00/0.05	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 
0.00/0.05	v 0
0.00/0.05	c Done (Running cputime is 0.049 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-3096198-1301754461/watcher-3096198-1301754461 -o /tmp/evaluation-result-3096198-1301754461/solver-3096198-1301754461 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096198-1301754461.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: 4.02 4.01 3.94 4/189 10748
/proc/meminfo: memFree=24604160/32951124 swapFree=67110456/67111528
[pid=10748] ppid=10746 vsize=3108 CPUtime=0 cores=4,6
/proc/10748/stat : 10748 (MultiFlip) R 10746 10748 9741 0 -1 4202496 367 0 0 0 0 0 0 0 25 0 1 0 365676777 3182592 306 33554432000 134512640 134540672 4289318272 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/10748/statm: 777 306 219 7 0 134 0

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

Child status: 10
Real time (s): 0.0561441
CPU time (s): 0.055991
CPU user time (s): 0.055991
CPU system time (s): 0
CPU usage (%): 99.7273
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.055991
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= 394
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= 2

runsolver used 0.002999 second user time and 0.001999 second system time

The end

Launcher Data 

Begin job on node118 at 2011-04-02 16:27:41
IDJOB=3096198
IDBENCH=82880
IDSOLVER=1523
FILE ID=node118/3096198-1301754461
RUNJOBID= node118-1301748570-9760
PBS_JOBID= 12841019
Free space on /tmp= 71184 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v550-c2343-S960198064-030.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096198-1301754461/watcher-3096198-1301754461 -o /tmp/evaluation-result-3096198-1301754461/solver-3096198-1301754461 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096198-1301754461.cnf

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

MD5SUM BENCH= 06e5d4421198459b1bb719e60182593d
RANDOM SEED=1468851716

node118.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		: 2666.842
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	: 5333.68
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		: 2666.842
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		: 2666.842
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		: 2666.842
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		: 2666.842
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	: 5332.68
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		: 2666.842
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		: 2666.842
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		: 2666.842
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	: 5374.59
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      24604316 kB
Buffers:        283676 kB
Cached:        7735568 kB
SwapCached:        640 kB
Active:        4787472 kB
Inactive:      3300112 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      24604316 kB
SwapTotal:    67111528 kB
SwapFree:     67110456 kB
Dirty:              44 kB
Writeback:           0 kB
AnonPages:       68204 kB
Mapped:          16244 kB
Slab:           195220 kB
PageTables:       5228 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   252868 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= 71184 MiB
End job on node118 at 2011-04-02 16:27:41