Trace number 1626997

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 1.00085 1.00163

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S2106599808-035.cnf
MD5SUM23914e10b601e89075d5cbe23a039c20
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.017996
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, 17 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 458 free variables and 1938 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.491
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 157 duplicate clauses
0.00/0.01	c resolvent_look() :: found 103 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 460 variables and 2041 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 2041 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 2041 / 460 ) = 4.44
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: 164 JD: 22
0.10/0.10	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
0.89/1.00	c solution bin :: 0000000000001000000000.0010000000
0.89/1.00	c direction branchin :: current_rights = 2
0.89/1.00	
c |***************************************************************
0.89/1.00	c
0.89/1.00	c main():: nodeCount: 1950
0.89/1.00	c main():: dead ends in main: 38
0.89/1.00	c main():: lookAheadCount: 159230
0.89/1.00	c main():: unitResolveCount: 24170
0.89/1.00	c main():: time=0.990000
0.89/1.00	c main():: necessary_assignments: 485
0.89/1.00	c main():: bin_sat: 0, bin_unsat 0
0.89/1.00	c main():: doublelook: #: 8269, succes #: 6112
0.89/1.00	c main():: doublelook: overall 5.356 of all possible doublelooks executed
0.89/1.00	c main():: doublelook: succesrate: 73.915, average DL_trigger: 6884.012
0.89/1.00	c main():: SOLUTION VERIFIED :-)
0.89/1.00	s SATISFIABLE
0.89/1.00	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-1626997-1240142331/watcher-1626997-1240142331 -o /tmp/evaluation-result-1626997-1240142331/solver-1626997-1240142331 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/march_ks HOME/instance-1626997-1240142331.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
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: 1.08 1.02 0.99 3/64 26388
/proc/meminfo: memFree=960032/2055920 swapFree=4192956/4192956
[pid=26388] ppid=26386 vsize=804 CPUtime=0
/proc/26388/stat : 26388 (march_ks) R 26386 26388 24809 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 42259506 823296 112 1992294400 134512640 135019032 4294956240 18446744073709551615 134532912 0 0 4096 0 0 0 0 17 0 0 0
/proc/26388/statm: 201 112 52 123 0 76 0

[startup+0.0734779 s]
/proc/loadavg: 1.08 1.02 0.99 3/64 26388
/proc/meminfo: memFree=960032/2055920 swapFree=4192956/4192956
[pid=26388] ppid=26386 vsize=1212 CPUtime=0.07
/proc/26388/stat : 26388 (march_ks) R 26386 26388 24809 0 -1 4194304 253 0 0 0 7 0 0 0 18 0 1 0 42259506 1241088 236 1992294400 134512640 135019032 4294956240 18446744073709551615 134577543 0 0 4096 0 0 0 0 17 0 0 0
/proc/26388/statm: 303 236 73 123 0 178 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 1212

[startup+0.101483 s]
/proc/loadavg: 1.08 1.02 0.99 3/64 26388
/proc/meminfo: memFree=960032/2055920 swapFree=4192956/4192956
[pid=26388] ppid=26386 vsize=1212 CPUtime=0.1
/proc/26388/stat : 26388 (march_ks) R 26386 26388 24809 0 -1 4194304 256 0 0 0 10 0 0 0 18 0 1 0 42259506 1241088 239 1992294400 134512640 135019032 4294956240 18446744073709551615 134527168 0 0 4096 0 0 0 0 17 0 0 0
/proc/26388/statm: 303 239 73 123 0 178 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1212

[startup+0.301522 s]
/proc/loadavg: 1.08 1.02 0.99 3/64 26388
/proc/meminfo: memFree=960032/2055920 swapFree=4192956/4192956
[pid=26388] ppid=26386 vsize=1344 CPUtime=0.29
/proc/26388/stat : 26388 (march_ks) R 26386 26388 24809 0 -1 4194304 272 0 0 0 29 0 0 0 19 0 1 0 42259506 1376256 255 1992294400 134512640 135019032 4294956240 18446744073709551615 134526481 0 0 4096 0 0 0 0 17 0 0 0
/proc/26388/statm: 336 255 73 123 0 211 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1344

[startup+0.701602 s]
/proc/loadavg: 1.08 1.02 0.99 3/64 26388
/proc/meminfo: memFree=960032/2055920 swapFree=4192956/4192956
[pid=26388] ppid=26386 vsize=1344 CPUtime=0.69
/proc/26388/stat : 26388 (march_ks) R 26386 26388 24809 0 -1 4194304 281 0 0 0 69 0 0 0 23 0 1 0 42259506 1376256 264 1992294400 134512640 135019032 4294956240 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 0 0 0
/proc/26388/statm: 336 264 73 123 0 211 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1344

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

[startup+0.90164 s]
/proc/loadavg: 1.08 1.02 0.99 3/64 26388
/proc/meminfo: memFree=960032/2055920 swapFree=4192956/4192956
[pid=26388] ppid=26386 vsize=1344 CPUtime=0.89
/proc/26388/stat : 26388 (march_ks) R 26386 26388 24809 0 -1 4194304 282 0 0 0 89 0 0 0 25 0 1 0 42259506 1376256 265 1992294400 134512640 135019032 4294956240 18446744073709551615 134628830 0 0 4096 0 0 0 0 17 0 0 0
/proc/26388/statm: 336 265 73 123 0 211 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 1344

Child status: 10
Real time (s): 1.00163
CPU time (s): 1.00085
CPU user time (s): 0.998848
CPU system time (s): 0.001999
CPU usage (%): 99.9222
Max. virtual memory (cumulated for all children) (KiB): 1344

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.998848
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= 288
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= 1

runsolver used 0.001999 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node66 at 2009-04-19 13:58:51
IDJOB=1626997
IDBENCH=70733
IDSOLVER=582
FILE ID=node66/1626997-1240142331
PBS_JOBID= 9157869
Free space on /tmp= 66372 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-S2106599808-035.cnf
COMMAND LINE= HOME/march_ks BENCHNAME            
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1626997-1240142331/watcher-1626997-1240142331 -o /tmp/evaluation-result-1626997-1240142331/solver-1626997-1240142331 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/march_ks HOME/instance-1626997-1240142331.cnf            

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

MD5SUM BENCH= 23914e10b601e89075d5cbe23a039c20
RANDOM SEED=809016471

node66.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		: 3000.263
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		: 3000.263
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:        960512 kB
Buffers:         84348 kB
Cached:         930280 kB
SwapCached:          0 kB
Active:         325640 kB
Inactive:       702908 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        960512 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            3336 kB
Writeback:           0 kB
Mapped:          23684 kB
Slab:            52944 kB
Committed_AS:   178108 kB
PageTables:       1360 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= 66368 MiB
End job on node66 at 2009-04-19 13:58:52