Trace number 3096375

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 0.074988 0.075723

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v550-c2343-S1940049314-069.SATISFIABLE.cnf
MD5SUMc3d1d9237da00564d672945308bcff7c
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010998
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 

0.05/0.07	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.05/0.07	c input CNF file=HOME/instance-3096375-1301760562.cnf 
0.05/0.07	c var#=550 clause#=2343 
0.05/0.07	c clause#=2343 var#=550 ratio=4 
0.05/0.07	c Unsat#=         3 flip#=      2415 
0.05/0.07	c Unsat#=         2 flip#=      9732 
0.05/0.07	c Unsat#=         1 flip#=      9759 
0.05/0.07	c Unsat#=         0 flip#=     44844 
0.05/0.07	c try 1-th flip# 44844
0.05/0.07	c A solution is found
0.05/0.07	c verified 
0.05/0.07	s SATISFIABLE
0.05/0.07	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 
0.05/0.07	v 0
0.05/0.07	c Done (Running cputime is 0.069 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-3096375-1301760562/watcher-3096375-1301760562 -o /tmp/evaluation-result-3096375-1301760562/solver-3096375-1301760562 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096375-1301760562.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: 3.99 4.00 3.96 4/189 13985
/proc/meminfo: memFree=22342172/32950928 swapFree=67111528/67111528
[pid=13985] ppid=13983 vsize=3108 CPUtime=0 cores=4,6
/proc/13985/stat : 13985 (MultiFlip) R 13983 13985 13313 0 -1 4202496 369 0 0 0 0 0 0 0 25 0 1 0 287655004 3182592 307 33554432000 134512640 134540672 4292315568 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13985/statm: 777 307 219 7 0 134 0

[startup+0.055189 s]
/proc/loadavg: 3.99 4.00 3.96 4/189 13985
/proc/meminfo: memFree=22342172/32950928 swapFree=67111528/67111528
[pid=13985] ppid=13983 vsize=3108 CPUtime=0.05 cores=4,6
/proc/13985/stat : 13985 (MultiFlip) R 13983 13985 13313 0 -1 4202496 374 0 0 0 5 0 0 0 25 0 1 0 287655004 3182592 312 33554432000 134512640 134540672 4292315568 18446744073709551615 134523517 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13985/statm: 777 312 220 7 0 134 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 3108

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

[startup+0.055189 s]
/proc/loadavg: 3.99 4.00 3.96 4/189 13985
/proc/meminfo: memFree=22342172/32950928 swapFree=67111528/67111528
[pid=13985] ppid=13983 vsize=3108 CPUtime=0.05 cores=4,6
/proc/13985/stat : 13985 (MultiFlip) R 13983 13985 13313 0 -1 4202496 374 0 0 0 5 0 0 0 25 0 1 0 287655004 3182592 312 33554432000 134512640 134540672 4292315568 18446744073709551615 134523517 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/13985/statm: 777 312 220 7 0 134 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 3108

Child status: 10
Real time (s): 0.075723
CPU time (s): 0.074988
CPU user time (s): 0.074988
CPU system time (s): 0
CPU usage (%): 99.0293
Max. virtual memory (cumulated for all children) (KiB): 3108

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.074988
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= 396
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 0.001999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node120 at 2011-04-02 18:09:22
IDJOB=3096375
IDBENCH=83057
IDSOLVER=1523
FILE ID=node120/3096375-1301760562
RUNJOBID= node120-1301756655-13332
PBS_JOBID= 12841056
Free space on /tmp= 71760 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v550-c2343-S1940049314-069.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096375-1301760562/watcher-3096375-1301760562 -o /tmp/evaluation-result-3096375-1301760562/solver-3096375-1301760562 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096375-1301760562.cnf

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

MD5SUM BENCH= c3d1d9237da00564d672945308bcff7c
RANDOM SEED=1127003260

node120.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	: 5226.07
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	: 5332.82
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		: 2666.809
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	: 5332.78
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	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      22342436 kB
Buffers:        353292 kB
Cached:        9916108 kB
SwapCached:          0 kB
Active:        7344784 kB
Inactive:      2992072 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      22342436 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              52 kB
Writeback:           0 kB
AnonPages:       67156 kB
Mapped:          16332 kB
Slab:           207996 kB
PageTables:       5104 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 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= 71760 MiB
End job on node120 at 2011-04-02 18:09:23