Trace number 3096296

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 0.275958 0.282239

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S608588601-044.SATISFIABLE.cnf
MD5SUM83b00b2914a5aae11a4e612c2fcbfce7
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.101984
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 

0.19/0.28	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.19/0.28	c input CNF file=HOME/instance-3096296-1301758365.cnf 
0.19/0.28	c var#=700 clause#=2982 
0.19/0.28	c clause#=2982 var#=700 ratio=4 
0.19/0.28	c Unsat#=         3 flip#=      3453 
0.19/0.28	c Unsat#=         2 flip#=     38238 
0.19/0.28	c Unsat#=         1 flip#=     58892 
0.19/0.28	c Unsat#=         0 flip#=    369271 
0.19/0.28	c try 1-th flip# 369271
0.19/0.28	c A solution is found
0.19/0.28	c verified 
0.19/0.28	s SATISFIABLE
0.19/0.28	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 
0.19/0.28	v 0
0.19/0.28	c Done (Running cputime is 0.269 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-3096296-1301758365/watcher-3096296-1301758365 -o /tmp/evaluation-result-3096296-1301758365/solver-3096296-1301758365 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096296-1301758365.cnf 

running on 2 cores: 1,3

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: 3.79 3.97 3.89 5/189 15802
/proc/meminfo: memFree=21555040/32950928 swapFree=67111528/67111528
[pid=15802] ppid=15800 vsize=11760 CPUtime=0 cores=1,3
/proc/15802/stat : 15802 (runsolver) R 15800 15802 15327 0 -1 4202560 41 0 0 0 0 0 0 0 25 0 1 0 287435212 12042240 50 33554432000 4194304 5392636 140734737776208 18446744073709551615 4838247 0 2147483391 4096 24578 0 0 0 17 3 0 0 0
/proc/15802/statm: 2940 50 30 293 0 2644 0

[startup+0.068942 s]
/proc/loadavg: 3.79 3.97 3.89 5/189 15802
/proc/meminfo: memFree=21555040/32950928 swapFree=67111528/67111528
[pid=15802] ppid=15800 vsize=3112 CPUtime=0.06 cores=1,3
/proc/15802/stat : 15802 (MultiFlip) R 15800 15802 15327 0 -1 4202496 384 0 0 0 6 0 0 0 25 0 1 0 287435212 3186688 322 33554432000 134512640 134540672 4292268192 18446744073709551615 134524800 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15802/statm: 778 322 219 7 0 135 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3112

[startup+0.100937 s]
/proc/loadavg: 3.79 3.97 3.89 5/189 15802
/proc/meminfo: memFree=21555040/32950928 swapFree=67111528/67111528
[pid=15802] ppid=15800 vsize=3112 CPUtime=0.09 cores=1,3
/proc/15802/stat : 15802 (MultiFlip) R 15800 15802 15327 0 -1 4202496 392 0 0 0 9 0 0 0 25 0 1 0 287435212 3186688 330 33554432000 134512640 134540672 4292268192 18446744073709551615 134524142 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15802/statm: 778 330 220 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

[startup+0.20092 s]
/proc/loadavg: 3.79 3.97 3.89 5/189 15802
/proc/meminfo: memFree=21555040/32950928 swapFree=67111528/67111528
[pid=15802] ppid=15800 vsize=3112 CPUtime=0.19 cores=1,3
/proc/15802/stat : 15802 (MultiFlip) R 15800 15802 15327 0 -1 4202496 392 0 0 0 19 0 0 0 25 0 1 0 287435212 3186688 330 33554432000 134512640 134540672 4292268192 18446744073709551615 4158784113 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/15802/statm: 778 330 220 7 0 135 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.282239
CPU time (s): 0.275958
CPU user time (s): 0.275958
CPU system time (s): 0
CPU usage (%): 97.7745
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.275958
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= 415
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 0.000999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node126 at 2011-04-02 17:32:45
IDJOB=3096296
IDBENCH=82978
IDSOLVER=1523
FILE ID=node126/3096296-1301758365
RUNJOBID= node126-1301757062-15347
PBS_JOBID= 12841073
Free space on /tmp= 71688 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S608588601-044.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096296-1301758365/watcher-3096296-1301758365 -o /tmp/evaluation-result-3096296-1301758365/solver-3096296-1301758365 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096296-1301758365.cnf

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

MD5SUM BENCH= 83b00b2914a5aae11a4e612c2fcbfce7
RANDOM SEED=449532607

node126.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		: 2666.783
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	: 5333.56
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		: 2666.783
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		: 2666.783
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		: 2666.783
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	: 5332.74
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		: 2666.783
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	: 5332.80
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		: 2666.783
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		: 2666.783
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		: 2666.783
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	: 5332.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      21555072 kB
Buffers:        349468 kB
Cached:       10712116 kB
SwapCached:          0 kB
Active:        7245728 kB
Inactive:      3882688 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      21555072 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              12 kB
Writeback:           0 kB
AnonPages:       66936 kB
Mapped:          16108 kB
Slab:           204116 kB
PageTables:       4780 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   252560 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= 71688 MiB
End job on node126 at 2011-04-02 17:32:45