Trace number 1736147

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
picosat 913SAT 0.009997 0.0103799

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 PicoSAT SAT Solver Version 913
0.00/0.00	c Copyright (c) 2006 - 2009 Armin Biere JKU Linz
0.00/0.00	c gcc -Wall -Wextra -m32 -static -DNDEBUG -O3 -fomit-frame-pointer -finline-limit=1000000
0.00/0.00	c
0.00/0.00	c parsing HOME/instance-1736147-1240810581.cnf
0.00/0.00	c parsed header 'p cnf 483 15156'
0.00/0.00	c initialized 483 variables
0.00/0.00	c found 15156 non trivial clauses
0.00/0.00	c
0.00/0.00	c random number generator seed 0
0.00/0.00	c 
0.00/0.00	c  seconds     variables   original    learned     agility
0.00/0.00	c         level        used      conflicts    limit          MB
0.00/0.00	c 
0.00/0.00	c s   0.0   0.0   483   0.0    21     0     0     0   0.0   0.2 
0.00/0.01	c 
0.00/0.01	c initial reduction limit 100 clauses
0.00/0.01	c 
0.00/0.01	c 1   0.0  89.8   483  14.5    21     1     1   100   0.0   0.2 
0.00/0.01	c 
0.00/0.01	c  seconds     variables   original    learned     agility
0.00/0.01	c         level        used      conflicts    limit          MB
0.00/0.01	c 
0.00/0.01	s SATISFIABLE
0.00/0.01	v -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21
0.00/0.01	v -22 23 -24 -25 -26 -27 -28 -29 -30 -31 -32 -33 -34 -35 -36 -37 -38 -39 -40
0.00/0.01	v -41 -42 -43 44 -45 -46 -47 -48 -49 -50 -51 -52 -53 -54 -55 -56 -57 -58 -59
0.00/0.01	v -60 -61 -62 -63 -64 -65 -66 -67 68 -69 -70 -71 -72 -73 -74 -75 -76 -77 -78
0.00/0.01	v -79 -80 -81 -82 -83 -84 -85 -86 -87 -88 89 -90 -91 -92 -93 -94 -95 -96 -97
0.00/0.01	v -98 -99 -100 -101 -102 -103 -104 -105 -106 -107 -108 -109 -110 111 -112 -113
0.00/0.01	v -114 -115 -116 -117 -118 -119 -120 -121 -122 -123 -124 -125 -126 -127 -128
0.00/0.01	v -129 -130 -131 -132 133 -134 -135 -136 -137 -138 -139 -140 -141 -142 -143
0.00/0.01	v -144 -145 -146 -147 -148 -149 -150 -151 -152 -153 -154 155 -156 -157 -158
0.00/0.01	v -159 -160 -161 -162 -163 -164 -165 -166 -167 -168 -169 -170 -171 -172 -173
0.00/0.01	v -174 -175 -176 177 -178 -179 -180 -181 -182 -183 -184 -185 -186 -187 -188
0.00/0.01	v -189 -190 -191 -192 -193 -194 -195 -196 -197 -198 199 -200 -201 -202 -203
0.00/0.01	v -204 -205 -206 -207 -208 -209 -210 -211 -212 -213 -214 -215 -216 -217 -218
0.00/0.01	v -219 -220 221 -222 -223 -224 -225 -226 -227 -228 -229 -230 -231 -232 -233
0.00/0.01	v -234 -235 -236 -237 -238 -239 -240 -241 242 -243 -244 -245 -246 -247 -248
0.00/0.01	v -249 -250 -251 -252 -253 -254 -255 -256 -257 -258 -259 -260 -261 -262 -263
0.00/0.01	v -264 -265 266 -267 -268 -269 -270 -271 -272 -273 -274 -275 -276 -277 -278
0.00/0.01	v -279 -280 -281 -282 -283 -284 -285 286 -287 -288 -289 -290 -291 -292 -293
0.00/0.01	v -294 -295 -296 -297 -298 -299 -300 -301 -302 -303 -304 305 -306 -307 -308
0.00/0.01	v -309 -310 -311 -312 -313 -314 -315 -316 -317 -318 -319 -320 -321 -322 -323
0.00/0.01	v -324 -325 -326 -327 -328 -329 330 -331 -332 -333 -334 -335 -336 -337 -338
0.00/0.01	v -339 -340 -341 -342 -343 -344 -345 -346 -347 348 -349 -350 -351 -352 -353
0.00/0.01	v -354 -355 -356 -357 -358 -359 -360 -361 -362 -363 -364 -365 -366 -367 -368
0.00/0.01	v -369 -370 -371 -372 373 -374 -375 -376 -377 -378 -379 -380 -381 -382 -383
0.00/0.01	v -384 -385 -386 -387 -388 -389 -390 -391 -392 393 -394 -395 -396 -397 -398
0.00/0.01	v -399 -400 -401 -402 -403 -404 -405 -406 -407 -408 -409 -410 -411 -412 -413
0.00/0.01	v -414 -415 -416 -417 -418 -419 -420 -421 -422 423 -424 -425 -426 -427 -428
0.00/0.01	v -429 -430 -431 -432 -433 -434 -435 -436 -437 -438 -439 -440 -441 -442 -443
0.00/0.01	v -444 -445 -446 -447 448 -449 -450 -451 -452 -453 -454 -455 -456 -457 -458
0.00/0.01	v -459 -460 -461 -462 -463 -464 -465 -466 467 -468 -469 -470 -471 -472 -473
0.00/0.01	v -474 -475 -476 -477 -478 -479 -480 -481 -482 -483 0
0.00/0.01	c
0.00/0.01	c 0 iterations
0.00/0.01	c 0 restarts
0.00/0.01	c 0 failed literals
0.00/0.01	c 1 conflicts
0.00/0.01	c 179 decisions
0.00/0.01	c 0 fixed variables
0.00/0.01	c 59 learned literals
0.00/0.01	c 0.0% deleted literals
0.00/0.01	c 31262 propagations
0.00/0.01	c 14.5% variables used
0.00/0.01	c 0.0 seconds in library
0.00/0.01	c 3.5 megaprops/second
0.00/0.01	c 1 simplifications
0.00/0.01	c 0 reductions
0.00/0.01	c 0.0 MB recycled
0.00/0.01	c 0.2 MB maximally allocated
0.00/0.01	c 0.0 seconds total run time

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-1736147-1240810581/watcher-1736147-1240810581 -o /tmp/evaluation-result-1736147-1240810581/solver-1736147-1240810581 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/picosat HOME/instance-1736147-1240810581.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.15 1.00 0.99 3/64 5336
/proc/meminfo: memFree=1567344/2055920 swapFree=4181900/4192956
[pid=5336] ppid=5334 vsize=912 CPUtime=0
/proc/5336/stat : 5336 (picosat) R 5334 5336 4996 0 -1 4194304 117 0 0 0 0 0 0 0 18 0 1 0 109086164 933888 102 1992294400 134512640 135137933 4294956240 18446744073709551615 134689438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5336/statm: 228 103 56 152 0 74 0

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

Child status: 10
Real time (s): 0.0103799
CPU time (s): 0.009997
CPU user time (s): 0.008998
CPU system time (s): 0.000999
CPU usage (%): 96.3112
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.008998
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 152
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node44 at 2009-04-27 07:36:22
IDJOB=1736147
IDBENCH=71616
IDSOLVER=506
FILE ID=node44/1736147-1240810581
PBS_JOBID= 9187434
Free space on /tmp= 66216 MiB

SOLVER NAME= picosat 913
BENCH NAME= SAT09/CRAFTED/sgi/sgi-difficult4.cnf
COMMAND LINE= HOME/picosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1736147-1240810581/watcher-1736147-1240810581 -o /tmp/evaluation-result-1736147-1240810581/solver-1736147-1240810581 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/picosat HOME/instance-1736147-1240810581.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 7c37bfaa2d3bc1d2ca8c28e73d9bfb79
RANDOM SEED=1957890074

node44.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		: 3000.267
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	: 5931.00
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		: 3000.267
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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1567760 kB
Buffers:         53264 kB
Cached:         349712 kB
SwapCached:       4956 kB
Active:         132596 kB
Inactive:       278828 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1567760 kB
SwapTotal:     4192956 kB
SwapFree:      4181900 kB
Dirty:            1112 kB
Writeback:           0 kB
Mapped:          14556 kB
Slab:            62708 kB
Committed_AS:   467028 kB
PageTables:       1380 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= 66216 MiB
End job on node44 at 2009-04-27 07:36:22