Trace number 3096328

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 0.070989 0.0752351

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S1617172756-030.SATISFIABLE.cnf
MD5SUM47049d4705301f4ac565d8b47d11d0a5
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.006998
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 

0.01/0.07	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.01/0.07	c input CNF file=HOME/instance-3096328-1301759259.cnf 
0.01/0.07	c var#=700 clause#=2982 
0.01/0.07	c clause#=2982 var#=700 ratio=4 
0.01/0.07	c Unsat#=         3 flip#=      6846 
0.01/0.07	c Unsat#=         2 flip#=      7716 
0.01/0.07	c Unsat#=         1 flip#=     19610 
0.01/0.07	c Unsat#=         0 flip#=     19771 
0.01/0.07	c try 1-th flip# 19771
0.01/0.07	c A solution is found
0.01/0.07	c verified 
0.01/0.07	s SATISFIABLE
0.01/0.07	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 -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 
0.01/0.07	v 0
0.01/0.07	c Done (Running cputime is 0.064 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-3096328-1301759259/watcher-3096328-1301759259 -o /tmp/evaluation-result-3096328-1301759259/solver-3096328-1301759259 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096328-1301759259.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: 4.03 4.02 3.94 4/183 13715
/proc/meminfo: memFree=22342772/32950928 swapFree=67111528/67111528
[pid=13714] ppid=13712 vsize=2984 CPUtime=0 cores=5,7
/proc/13714/stat : 13714 (MultiFlip) R 13712 13714 13313 0 -1 4202496 331 0 0 0 0 0 0 0 25 0 1 0 287524700 3055616 270 33554432000 134512640 134540672 4294769968 18446744073709551615 4294960144 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/13714/statm: 746 270 215 7 0 103 0

[startup+0.018311 s]
/proc/loadavg: 4.03 4.02 3.94 4/183 13715
/proc/meminfo: memFree=22342772/32950928 swapFree=67111528/67111528
[pid=13714] ppid=13712 vsize=3112 CPUtime=0.01 cores=5,7
/proc/13714/stat : 13714 (MultiFlip) R 13712 13714 13313 0 -1 4202496 383 0 0 0 1 0 0 0 25 0 1 0 287524700 3186688 321 33554432000 134512640 134540672 4294769968 18446744073709551615 134524757 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/13714/statm: 778 321 219 7 0 135 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 3112

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

[startup+0.018311 s]
/proc/loadavg: 4.03 4.02 3.94 4/183 13715
/proc/meminfo: memFree=22342772/32950928 swapFree=67111528/67111528
[pid=13714] ppid=13712 vsize=3112 CPUtime=0.01 cores=5,7
/proc/13714/stat : 13714 (MultiFlip) R 13712 13714 13313 0 -1 4202496 383 0 0 0 1 0 0 0 25 0 1 0 287524700 3186688 321 33554432000 134512640 134540672 4294769968 18446744073709551615 134524757 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/13714/statm: 778 321 219 7 0 135 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 0.0752351
CPU time (s): 0.070989
CPU user time (s): 0.070989
CPU system time (s): 0
CPU usage (%): 94.3563
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.070989
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= 1

runsolver used 0.000999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node120 at 2011-04-02 17:47:39
IDJOB=3096328
IDBENCH=83010
IDSOLVER=1523
FILE ID=node120/3096328-1301759259
RUNJOBID= node120-1301756655-13334
PBS_JOBID= 12841056
Free space on /tmp= 71760 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S1617172756-030.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096328-1301759259/watcher-3096328-1301759259 -o /tmp/evaluation-result-3096328-1301759259/solver-3096328-1301759259 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096328-1301759259.cnf

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

MD5SUM BENCH= 47049d4705301f4ac565d8b47d11d0a5
RANDOM SEED=2067420816

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:      22342796 kB
Buffers:        352948 kB
Cached:        9915988 kB
SwapCached:          0 kB
Active:        7343824 kB
Inactive:      2991912 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      22342796 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              12 kB
Writeback:           0 kB
AnonPages:       66580 kB
Mapped:          16332 kB
Slab:           207852 kB
PageTables:       5200 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   243052 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 17:47:40