Trace number 1784474

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
precosat 236SAT 0.143977 0.144611

General information on the benchmark

NameCRAFTED/sgi/
sgi-difficult4.cnf
MD5SUM7c37bfaa2d3bc1d2ca8c28e73d9bfb79
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.007998
Satisfiable
(Un)Satisfiability was proved
Number of variables483
Number of clauses15156
Sum of the clauses size30753
Maximum clause length23
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 215135
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 521

Solver Data 

0.00/0.00	c PicoSATLight Version 236 3e7a3f8825c0b9e241f38a63fee5517540b2feca
0.00/0.00	c Copyright (C) 2009, Armin Biere, JKU, Linz, Austria.  All rights reserved.
0.00/0.00	c Released on Sun Mar 22 10:16:26 CET 2009
0.00/0.00	c Compiled on Tue Mar 24 21:24:39 CET 2009
0.00/0.00	c g++ (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)
0.00/0.00	c -O3 -m32 -static -Wall -Wextra -DNDEBUG -DNLOGPRECO -DNSTATSPRECO
0.00/0.00	c -finline-limit=10000000 -fomit-frame-pointer -fno-exceptions
0.00/0.00	c Linux baghera 2.6.27.19-170.2.35.fc10.i686.PAE i686
0.00/0.00	c
0.00/0.00	c reading HOME/instance-1784474-1241947183.cnf
0.00/0.00	c found header 'p cnf 483 15156'
0.00/0.01	c finished parsing
0.00/0.01	c
0.00/0.01	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.01	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.01	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.01	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.01	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.01	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.01	c
0.00/0.01	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.01	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.01	c
0.00/0.01	c starting search after 0.0 seconds
0.00/0.01	c no decision limit
0.00/0.01	c
0.00/0.01	c       original/binary      fixed     eliminated      learned       agility
0.00/0.01	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.01	c
0.00/0.01	c *    0.0    15156     483      0     0      0       0      0    0.0   0    1
0.09/0.14	c s    0.1    14673     462      0     0     21       0      0    0.0   0    1
0.09/0.14	c l    0.1    14673     462      0     0     21       0   1000    0.0   0    1
0.09/0.14	c 1    0.1    14673     462      0     0     21       0      0   85.0   0    1
0.09/0.14	c
0.09/0.14	s SATISFIABLE
0.09/0.14	v 1 -2 -3 -4 -5 -6 -7
0.09/0.14	v -8 -9 -10 -11 -12 -13 -14 -15
0.09/0.14	v -16 -17 -18 -19 -20 -21 -22 -23
0.09/0.14	v -24 -25 -26 -27 -28 -29 -30 -31
0.09/0.14	v -32 -33 -34 -35 -36 -37 -38 -39
0.09/0.14	v -40 -41 -42 -43 -44 -45 46 -47
0.09/0.14	v -48 -49 -50 -51 -52 -53 -54 -55
0.09/0.14	v -56 -57 -58 -59 -60 -61 -62 -63
0.09/0.14	v -64 -65 -66 -67 68 -69 -70 -71
0.09/0.14	v -72 -73 -74 -75 -76 -77 -78 -79
0.09/0.14	v -80 -81 -82 -83 -84 -85 -86 -87
0.09/0.14	v -88 -89 90 -91 -92 -93 -94 -95
0.09/0.14	v -96 -97 -98 -99 -100 -101 -102 -103
0.09/0.14	v -104 -105 -106 -107 -108 -109 -110 -111
0.09/0.14	v 112 -113 -114 -115 -116 -117 -118 -119
0.09/0.14	v -120 -121 -122 -123 -124 -125 -126 -127
0.09/0.14	v -128 -129 -130 -131 -132 133 -134 -135
0.09/0.14	v -136 -137 -138 -139 -140 -141 -142 -143
0.09/0.14	v -144 -145 -146 -147 -148 -149 -150 -151
0.09/0.14	v -152 -153 -154 -155 -156 157 -158 -159
0.09/0.14	v -160 -161 -162 -163 -164 -165 -166 -167
0.09/0.14	v -168 -169 -170 -171 -172 -173 -174 -175
0.09/0.14	v -176 -177 178 -179 -180 -181 -182 -183
0.09/0.14	v -184 -185 -186 -187 -188 -189 -190 -191
0.09/0.14	v -192 -193 -194 -195 -196 -197 -198 -199
0.09/0.14	v 200 -201 -202 -203 -204 -205 -206 -207
0.09/0.14	v -208 -209 -210 -211 -212 -213 -214 -215
0.09/0.14	v -216 -217 -218 -219 -220 -221 222 -223
0.09/0.14	v -224 -225 -226 -227 -228 -229 -230 -231
0.09/0.14	v -232 -233 -234 -235 -236 -237 -238 -239
0.09/0.14	v -240 -241 -242 243 -244 -245 -246 -247
0.09/0.14	v -248 -249 -250 -251 -252 -253 -254 -255
0.09/0.14	v -256 -257 -258 -259 -260 -261 -262 -263
0.09/0.14	v -264 -265 -266 267 -268 -269 -270 -271
0.09/0.14	v -272 -273 -274 -275 -276 -277 -278 -279
0.09/0.14	v -280 -281 -282 -283 -284 -285 -286 287
0.09/0.14	v -288 -289 -290 -291 -292 -293 -294 -295
0.09/0.14	v -296 -297 -298 -299 -300 -301 -302 -303
0.09/0.14	v -304 -305 -306 -307 -308 -309 -310 311
0.09/0.14	v -312 -313 -314 -315 -316 -317 -318 -319
0.09/0.14	v -320 -321 -322 -323 -324 -325 -326 -327
0.09/0.14	v -328 329 -330 -331 -332 -333 -334 -335
0.09/0.14	v -336 -337 -338 -339 -340 -341 -342 -343
0.09/0.14	v -344 -345 -346 -347 -348 349 -350 -351
0.09/0.14	v -352 -353 -354 -355 -356 -357 -358 -359
0.09/0.14	v -360 -361 -362 -363 -364 -365 -366 -367
0.09/0.14	v -368 -369 -370 -371 -372 373 -374 -375
0.09/0.14	v -376 -377 -378 -379 -380 -381 -382 -383
0.09/0.14	v -384 -385 -386 -387 -388 -389 -390 -391
0.09/0.14	v -392 -393 -394 -395 -396 -397 -398 -399
0.09/0.14	v -400 401 -402 -403 -404 -405 -406 -407
0.09/0.14	v -408 -409 -410 -411 -412 -413 -414 -415
0.09/0.14	v -416 417 -418 -419 -420 -421 -422 -423
0.09/0.14	v -424 -425 -426 -427 -428 -429 -430 -431
0.09/0.14	v -432 -433 -434 -435 -436 -437 -438 439
0.09/0.14	v -440 -441 -442 -443 -444 -445 -446 -447
0.09/0.14	v -448 -449 -450 -451 -452 -453 -454 -455
0.09/0.14	v -456 -457 -458 -459 -460 -461 -462 -463
0.09/0.14	v -464 -465 466 -467 -468 -469 -470 -471
0.09/0.14	v -472 -473 -474 -475 -476 -477 -478 -479
0.09/0.14	v -480 -481 -482 -483
0.09/0.14	v 0
0.09/0.14	c
0.09/0.14	c 0 conflicts, 171 decisions, 1 random
0.09/0.14	c 0 iterations, 0 restarts, 0 skipped
0.09/0.14	c 0 enlarged, 0 shrunken, 0 rescored, 0 rebiased
0.09/0.14	c 1 simplifications, 0 reductions
0.09/0.14	c
0.09/0.14	c vars: 0 fixed, 0 equiv, 21 elim, 0 merged
0.09/0.14	c elim: 76545 resolutions, 1 phases, 1 rounds
0.09/0.14	c sbst: 100% substituted, 0.0% nots, 100.0% ands, 0.0% xors, 0.0% ites
0.09/0.14	c arty: 22.00 and 0.00 xor average arity
0.09/0.14	c prbe: 966 probed, 1 phases, 1 rounds
0.09/0.14	c prbe: 0 failed, 0 lifted, 0 merged
0.09/0.14	c sccs: 0 non trivial, 0 fixed, 0 merged
0.09/0.14	c hash: 0 units, 0 merged
0.09/0.14	c mins: 0 learned, 0% deleted, 0 strong, 0 depth
0.09/0.14	c subs: 0 forward, 0 backward, 0 doms
0.09/0.14	c strs: 2351 forward, 0 backward
0.09/0.14	c doms: 0 dominators, 0 high, 0 low
0.09/0.14	c prps: 31698 propagations, 0.22 megaprops
0.09/0.14	c
0.09/0.14	c 0.1 seconds, 1 MB max, 0 MB recycled

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1784474-1241947183/watcher-1784474-1241947183 -o /tmp/evaluation-result-1784474-1241947183/solver-1784474-1241947183 -C 5000 -W 6000 -M 1800 HOME/precosat HOME/instance-1784474-1241947183.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.92 0.98 0.99 3/65 14636
/proc/meminfo: memFree=1794400/2055920 swapFree=4180404/4192956
[pid=14636] ppid=14634 vsize=1192 CPUtime=0
/proc/14636/stat : 14636 (precosat) R 14634 14636 14557 0 -1 4194304 188 0 0 0 0 0 0 0 20 0 1 0 222748421 1220608 173 1992294400 134512640 135151029 4294956240 18446744073709551615 134697845 0 0 4096 17442 0 0 0 17 1 0 0
/proc/14636/statm: 298 173 63 155 0 141 0

[startup+0.0589289 s]
/proc/loadavg: 0.92 0.98 0.99 3/65 14636
/proc/meminfo: memFree=1794400/2055920 swapFree=4180404/4192956
[pid=14636] ppid=14634 vsize=2308 CPUtime=0.05
/proc/14636/stat : 14636 (precosat) R 14634 14636 14557 0 -1 4194304 562 0 0 0 5 0 0 0 20 0 1 0 222748421 2363392 495 1992294400 134512640 135151029 4294956240 18446744073709551615 134573891 0 0 4096 17442 0 0 0 17 1 0 0
/proc/14636/statm: 577 495 79 155 0 420 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 2308

[startup+0.101934 s]
/proc/loadavg: 0.92 0.98 0.99 3/65 14636
/proc/meminfo: memFree=1794400/2055920 swapFree=4180404/4192956
[pid=14636] ppid=14634 vsize=2308 CPUtime=0.09
/proc/14636/stat : 14636 (precosat) R 14634 14636 14557 0 -1 4194304 562 0 0 0 9 0 0 0 20 0 1 0 222748421 2363392 495 1992294400 134512640 135151029 4294956240 18446744073709551615 134573903 0 0 4096 17442 0 0 0 17 1 0 0
/proc/14636/statm: 577 495 79 155 0 420 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2308

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

Child status: 10
Real time (s): 0.144611
CPU time (s): 0.143977
CPU user time (s): 0.141978
CPU system time (s): 0.001999
CPU usage (%): 99.5615
Max. virtual memory (cumulated for all children) (KiB): 2308

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.141978
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 563
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= 2
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node76 at 2009-05-10 11:19:43
IDJOB=1784474
IDBENCH=71616
IDSOLVER=607
FILE ID=node76/1784474-1241947183
PBS_JOBID= 9265040
Free space on /tmp= 66512 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/CRAFTED/sgi/sgi-difficult4.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1784474-1241947183/watcher-1784474-1241947183 -o /tmp/evaluation-result-1784474-1241947183/solver-1784474-1241947183 -C 5000 -W 6000 -M 1800  HOME/precosat HOME/instance-1784474-1241947183.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 7c37bfaa2d3bc1d2ca8c28e73d9bfb79
RANDOM SEED=1190834755

node76.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.220
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.220
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1794816 kB
Buffers:         54380 kB
Cached:         155244 kB
SwapCached:       7228 kB
Active:         120148 kB
Inactive:        98144 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1794816 kB
SwapTotal:     4192956 kB
SwapFree:      4180404 kB
Dirty:             880 kB
Writeback:           0 kB
Mapped:          13680 kB
Slab:            28696 kB
Committed_AS:   715756 kB
PageTables:       1432 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66512 MiB
End job on node76 at 2009-05-10 11:19:43