Trace number 1519069

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
march_hi hiSAT 0.174972 0.175307

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S2035161427-020.cnf
MD5SUM074d3c53fc7fcb6f758396e5d450cb42
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.019996
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 

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.00/0.02	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.00/0.02	c main()::
0.00/0.02	c initFormula():: searching for DIMACS p-line....
0.00/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 460 variables and 1955 clauses.
0.00/0.02	c parseCNF():: parsing....
0.00/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.02	c runParser():: parsing was successful, warming up engines...
0.00/0.02	c simplify_formula():: removed 0 tautological, 12 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 458 free variables and 1943 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.486
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 173 duplicate clauses
0.00/0.02	c resolvent_look() :: found 92 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 460 variables and 2035 clauses.
0.00/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.02	c transformTo3SAT():: the transformation yielded 460 variabels and 2035 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2035 / 460 ) = 4.42
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c number of free variables = 458
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/999) NodeCount: 134
0.00/0.07	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
0.09/0.17	c |000000000000000010000000000000000000000000000000000000000000000|
0.09/0.17	
c |***************************************************************
0.09/0.17	c
0.09/0.17	c main():: nodeCount: 556
0.09/0.17	c main():: dead ends in main: 5
0.09/0.17	c main():: lookAheadCount: 42973
0.09/0.17	c main():: unitResolveCount: 3315
0.09/0.17	c main():: time=0.170000
0.09/0.17	c main():: necessary_assignments: 51
0.09/0.17	c main():: bin_sat: 0, bin_unsat 0
0.09/0.17	c main():: doublelook: #: 1112, succes #: 470
0.09/0.17	c main():: doublelook: overall 2.608 of all possible doublelooks executed
0.09/0.17	c main():: doublelook: succesrate: 42.266, average DL_trigger: 43.293
0.09/0.17	c main():: SOLUTION VERIFIED :-)
0.09/0.17	s SATISFIABLE
0.09/0.17	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 -79 -80 81 82 -84 85 -86 87 88 -89 90 91 92 93 -94 95 96 97 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 -131 -132 133 134 -135 -136 139 -140 -142 -143 144 145 146 147 148 149 -150 151 152 153 -154 -155 -156 157 -159 160 -161 -162 164 -165 166 -167 168 169 -170 171 172 174 175 176 -177 179 -180 -181 182 -183 184 -185 186 -187 -188 -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 -233 -234 235 -237 238 -239 240 -241 242 -243 244 -245 -246 247 248 -249 250 251 -252 253 -254 -255 256 -258 259 260 -261 262 263 264 265 -266 -267 -268 269 -270 271 -273 274 -276 -277 278 -279 280 -281 282 283 -285 -286 287 -288 289 -290 -291 292 293 294 296 297 -298 299 300 301 -303 304 -305 307 -308 -309 310 -311 312 -313 -314 -315 316 317 -318 319 -320 321 -322 323 324 -325 326 -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 -359 -360 361 362 -363 364 365 -366 367 -368 -369 -370 -371 372 -373 374 375 376 -378 -379 -380 -381 382 -383 -384 -385 386 387 -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 -421 423 424 425 -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 -455 456 -457 458 459 460 0

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1519069-1238307965/watcher-1519069-1238307965 -o /tmp/evaluation-result-1519069-1238307965/solver-1519069-1238307965 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1519069-1238307965.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 1.01 1.00 3/65 19403
/proc/meminfo: memFree=832744/2055920 swapFree=4176856/4192956
[pid=19403] ppid=19401 vsize=980 CPUtime=0
/proc/19403/stat : 19403 (march_hi) R 19401 19403 19055 0 -1 4194304 143 0 0 0 0 0 0 0 20 0 1 0 990170238 1003520 126 1992294400 134512640 135197378 4294956240 18446744073709551615 134722737 0 0 4096 0 0 0 0 17 1 0 0
/proc/19403/statm: 245 126 65 167 0 76 0

[startup+0.00782991 s]
/proc/loadavg: 1.00 1.01 1.00 3/65 19403
/proc/meminfo: memFree=832744/2055920 swapFree=4176856/4192956
[pid=19403] ppid=19401 vsize=980 CPUtime=0
/proc/19403/stat : 19403 (march_hi) R 19401 19403 19055 0 -1 4194304 146 0 0 0 0 0 0 0 20 0 1 0 990170238 1003520 129 1992294400 134512640 135197378 4294956240 18446744073709551615 134694893 0 0 4096 0 0 0 0 17 1 0 0
/proc/19403/statm: 245 129 67 167 0 76 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 980

[startup+0.101836 s]
/proc/loadavg: 1.00 1.01 1.00 3/65 19403
/proc/meminfo: memFree=832744/2055920 swapFree=4176856/4192956
[pid=19403] ppid=19401 vsize=1684 CPUtime=0.09
/proc/19403/stat : 19403 (march_hi) R 19401 19403 19055 0 -1 4194304 286 0 0 0 9 0 0 0 20 0 1 0 990170238 1724416 269 1992294400 134512640 135197378 4294956240 18446744073709551615 134542146 0 0 4096 0 0 0 0 17 1 0 0
/proc/19403/statm: 421 269 91 167 0 252 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1684

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

Child status: 10
Real time (s): 0.175307
CPU time (s): 0.174972
CPU user time (s): 0.172973
CPU system time (s): 0.001999
CPU usage (%): 99.8089
Max. virtual memory (cumulated for all children) (KiB): 1684

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.172973
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= 327
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 0.004999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node8 at 2009-03-29 08:26:05
IDJOB=1519069
IDBENCH=70732
IDSOLVER=521
FILE ID=node8/1519069-1238307965
PBS_JOBID= 9061072
Free space on /tmp= 64056 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S2035161427-020.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1519069-1238307965/watcher-1519069-1238307965 -o /tmp/evaluation-result-1519069-1238307965/solver-1519069-1238307965 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1519069-1238307965.cnf

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

MD5SUM BENCH= 074d3c53fc7fcb6f758396e5d450cb42
RANDOM SEED=1897555241

node8.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		: 3000.232
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		: 3000.232
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:        833160 kB
Buffers:         95820 kB
Cached:        1023164 kB
SwapCached:       9204 kB
Active:         154904 kB
Inactive:       974804 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        833160 kB
SwapTotal:     4192956 kB
SwapFree:      4176856 kB
Dirty:             800 kB
Writeback:           0 kB
Mapped:          16392 kB
Slab:            78784 kB
Committed_AS:  2569592 kB
PageTables:       1376 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 64056 MiB
End job on node8 at 2009-03-29 08:26:05