Trace number 1544996

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
SAT07 reference solver: March KS 2007-02-08SAT 0.446931 0.446894

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S321371087-018.cnf
MD5SUMb036614b8a0cd434fa1df7a69038371b
Bench CategoryRANDOM (random 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 variables460
Number of clauses1955
Sum of the clauses size5865
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31955
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 460 variables and 1955 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 4 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 459 free variables and 1951 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.521
0.00/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 148 duplicate clauses
0.00/0.01	c resolvent_look() :: found 75 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 460 variables and 2026 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 460 variabels and 2026 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 2026 / 460 ) = 4.40
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c suggested doublelook initial :: 0
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 165 JD: 23
0.10/0.10	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
0.40/0.44	c solution bin :: 00001000000000000000000.000000010
0.40/0.44	c direction branchin :: current_rights = 3
0.40/0.44	
c |************************************************************
0.40/0.44	c
0.40/0.44	c main():: nodeCount: 817
0.40/0.44	c main():: dead ends in main: 15
0.40/0.44	c main():: lookAheadCount: 66617
0.40/0.44	c main():: unitResolveCount: 10727
0.40/0.44	c main():: time=0.440000
0.40/0.44	c main():: necessary_assignments: 235
0.40/0.44	c main():: bin_sat: 0, bin_unsat 0
0.40/0.44	c main():: doublelook: #: 3363, succes #: 2464
0.40/0.44	c main():: doublelook: overall 5.206 of all possible doublelooks executed
0.40/0.44	c main():: doublelook: succesrate: 73.268, average DL_trigger: 6755.509
0.40/0.44	c main():: SOLUTION VERIFIED :-)
0.40/0.44	s SATISFIABLE
0.40/0.44	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 0

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-1544996-1238615044/watcher-1544996-1238615044 -o /tmp/evaluation-result-1544996-1238615044/solver-1544996-1238615044 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_ks HOME/instance-1544996-1238615044.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: 1.00 1.00 0.96 3/64 2440
/proc/meminfo: memFree=1013944/2055920 swapFree=4176444/4192956
[pid=2440] ppid=2438 vsize=804 CPUtime=0
/proc/2440/stat : 2440 (march_ks) R 2438 2440 1976 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 1134169761 823296 110 1992294400 134512640 135019032 4294956240 18446744073709551615 134677352 0 0 4096 0 0 0 0 17 0 0 0
/proc/2440/statm: 201 110 50 123 0 76 0

[startup+0.00986493 s]
/proc/loadavg: 1.00 1.00 0.96 3/64 2440
/proc/meminfo: memFree=1013944/2055920 swapFree=4176444/4192956
[pid=2440] ppid=2438 vsize=804 CPUtime=0
/proc/2440/stat : 2440 (march_ks) R 2438 2440 1976 0 -1 4194304 140 0 0 0 0 0 0 0 18 0 1 0 1134169761 823296 123 1992294400 134512640 135019032 4294956240 18446744073709551615 134554758 0 0 4096 0 0 0 0 17 0 0 0
/proc/2440/statm: 201 123 63 123 0 76 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 804

[startup+0.101874 s]
/proc/loadavg: 1.00 1.00 0.96 3/64 2440
/proc/meminfo: memFree=1013944/2055920 swapFree=4176444/4192956
[pid=2440] ppid=2438 vsize=1356 CPUtime=0.1
/proc/2440/stat : 2440 (march_ks) R 2438 2440 1976 0 -1 4194304 262 0 0 0 10 0 0 0 18 0 1 0 1134169761 1388544 245 1992294400 134512640 135019032 4294956240 18446744073709551615 134538609 0 0 4096 0 0 0 0 17 0 0 0
/proc/2440/statm: 339 245 73 123 0 214 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1356

[startup+0.301893 s]
/proc/loadavg: 1.00 1.00 0.96 3/64 2440
/proc/meminfo: memFree=1013944/2055920 swapFree=4176444/4192956
[pid=2440] ppid=2438 vsize=1356 CPUtime=0.3
/proc/2440/stat : 2440 (march_ks) R 2438 2440 1976 0 -1 4194304 273 0 0 0 30 0 0 0 19 0 1 0 1134169761 1388544 256 1992294400 134512640 135019032 4294956240 18446744073709551615 134548889 0 0 4096 0 0 0 0 17 0 0 0
/proc/2440/statm: 339 256 73 123 0 214 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1356

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

[startup+0.401904 s]
/proc/loadavg: 1.00 1.00 0.96 3/64 2440
/proc/meminfo: memFree=1013944/2055920 swapFree=4176444/4192956
[pid=2440] ppid=2438 vsize=1356 CPUtime=0.4
/proc/2440/stat : 2440 (march_ks) R 2438 2440 1976 0 -1 4194304 277 0 0 0 40 0 0 0 20 0 1 0 1134169761 1388544 260 1992294400 134512640 135019032 4294956240 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 0 0 0
/proc/2440/statm: 339 260 73 123 0 214 0
Current children cumulated CPU time (s) 0.4
Current children cumulated vsize (KiB) 1356

Child status: 10
Real time (s): 0.446894
CPU time (s): 0.446931
CPU user time (s): 0.445932
CPU system time (s): 0.000999
CPU usage (%): 100.008
Max. virtual memory (cumulated for all children) (KiB): 1356

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.445932
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= 279
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= 2

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node27 at 2009-04-01 21:44:04
IDJOB=1544996
IDBENCH=70725
IDSOLVER=559
FILE ID=node27/1544996-1238615044
PBS_JOBID= 9073615
Free space on /tmp= 65720 MiB

SOLVER NAME= SAT07 reference solver: March KS 2007-02-08
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S321371087-018.cnf
COMMAND LINE= HOME/march_ks BENCHNAME            
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1544996-1238615044/watcher-1544996-1238615044 -o /tmp/evaluation-result-1544996-1238615044/solver-1544996-1238615044 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_ks HOME/instance-1544996-1238615044.cnf            

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

MD5SUM BENCH= b036614b8a0cd434fa1df7a69038371b
RANDOM SEED=405929248

node27.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		: 2800.196
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	: 5521.40
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		: 2800.196
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:       1014424 kB
Buffers:         98068 kB
Cached:         838864 kB
SwapCached:       9492 kB
Active:         221532 kB
Inactive:       726484 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1014424 kB
SwapTotal:     4192956 kB
SwapFree:      4176444 kB
Dirty:            3460 kB
Writeback:           0 kB
Mapped:          16788 kB
Slab:            79408 kB
Committed_AS:  3043192 kB
PageTables:       1380 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264948 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 65716 MiB
End job on node27 at 2009-04-01 21:44:04