Trace number 1518205

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 2.07568 2.07699

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/520/
unif-k3-r4.25-v520-c2210-S1161147107-031.cnf
MD5SUM4cc7ee2f20081e6ebd36addd568f2c4e
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Satisfiable
(Un)Satisfiability was proved
Number of variables520
Number of clauses2210
Sum of the clauses size6630
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32210
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 520 variables and 2210 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, 0 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 520 free variables and 2210 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.452
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 164 duplicate clauses
0.00/0.02	c resolvent_look() :: found 90 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 520 variables and 2300 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 520 variabels and 2300 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2300 / 520 ) = 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 = 520
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: 144
0.03/0.10	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 1/999) NodeCount: 781
0.19/0.28	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |***********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
1.99/2.07	c |000000000000000010000000100000000000000000000000000000000000000|
1.99/2.07	
c |***************************************************************
1.99/2.07	c
1.99/2.07	c main():: nodeCount: 6016
1.99/2.07	c main():: dead ends in main: 32
1.99/2.07	c main():: lookAheadCount: 424464
1.99/2.07	c main():: unitResolveCount: 36227
1.99/2.07	c main():: time=2.070000
1.99/2.07	c main():: necessary_assignments: 656
1.99/2.07	c main():: bin_sat: 0, bin_unsat 0
1.99/2.07	c main():: doublelook: #: 11732, succes #: 4218
1.99/2.07	c main():: doublelook: overall 2.787 of all possible doublelooks executed
1.99/2.07	c main():: doublelook: succesrate: 35.953, average DL_trigger: 49.028
1.99/2.07	c main():: SOLUTION VERIFIED :-)
1.99/2.07	s SATISFIABLE
1.99/2.07	v -2 3 -4 -5 -6 8 9 -10 -12 13 -14 -15 -16 -17 18 19 -20 -21 22 -23 -24 25 26 28 29 -30 -31 -32 -33 -34 -35 36 37 39 -40 -41 -42 43 44 -46 47 48 49 -50 52 53 -54 55 -56 -57 58 59 60 -62 63 -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 -104 106 107 109 110 111 -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 -147 148 -149 150 151 152 153 -154 -155 -156 157 158 -159 -160 -161 -162 164 165 -166 -167 -168 -169 -170 171 172 -173 175 -176 177 178 -180 -181 182 -183 -184 -185 -186 -187 -189 190 -191 -192 193 -194 -195 -196 197 -198 199 -200 -201 -202 -203 204 205 206 -207 -208 -209 210 -212 213 214 215 -216 217 -218 -219 220 -221 -223 224 225 226 227 228 229 -230 231 -232 -233 -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 -261 263 -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 -296 297 298 300 301 -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 -366 368 369 -370 371 -372 373 374 375 -376 -378 -379 380 381 382 -383 -384 -385 -386 387 389 390 391 -392 393 395 398 -399 -401 -402 -403 404 -405 -406 -408 -409 410 411 412 -413 -414 415 416 -417 -418 419 420 421 -422 423 -424 -426 427 428 -429 -430 431 432 434 435 -436 437 -439 440 -441 -442 444 445 446 447 448 -449 450 -451 452 453 -454 455 -456 -457 -458 459 -460 461 -462 -464 -465 466 -467 468 -469 470 471 -472 -473 474 475 476 477 -478 479 480 -481 -482 -483 484 485 -486 -487 488 489 490 -491 -492 -493 -494 -495 496 -497 498 499 500 502 -503 -504 -505 -506 -507 508 509 510 -511 512 513 -514 -515 -516 517 518 519 -520 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-1518205-1238296734/watcher-1518205-1238296734 -o /tmp/evaluation-result-1518205-1238296734/solver-1518205-1238296734 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518205-1238296734.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: 0.92 0.98 0.99 3/64 19775
/proc/meminfo: memFree=658056/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=980 CPUtime=0
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 1102339264 1003520 127 1992294400 134512640 135197378 4294956240 18446744073709551615 134670883 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 246 128 64 167 0 77 0

[startup+0.0390381 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19775
/proc/meminfo: memFree=658056/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=1896 CPUtime=0.03
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 303 0 0 0 3 0 0 0 18 0 1 0 1102339264 1941504 286 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 474 286 91 167 0 305 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1896

[startup+0.101042 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19775
/proc/meminfo: memFree=658056/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=1896 CPUtime=0.09
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 314 0 0 0 9 0 0 0 18 0 1 0 1102339264 1941504 297 1992294400 134512640 135197378 4294956240 18446744073709551615 134700655 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 474 297 91 167 0 305 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1896

[startup+0.301061 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19775
/proc/meminfo: memFree=658056/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=1896 CPUtime=0.29
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 335 0 0 0 29 0 0 0 19 0 1 0 1102339264 1941504 318 1992294400 134512640 135197378 4294956240 18446744073709551615 134713215 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 474 318 91 167 0 305 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1896

[startup+0.7011 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19775
/proc/meminfo: memFree=658056/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=2028 CPUtime=0.69
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 356 0 0 0 69 0 0 0 22 0 1 0 1102339264 2076672 339 1992294400 134512640 135197378 4294956240 18446744073709551615 134525351 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 507 339 91 167 0 338 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2028

[startup+1.50118 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 19776
/proc/meminfo: memFree=657024/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=2164 CPUtime=1.49
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 399 0 0 0 149 0 0 0 25 0 1 0 1102339264 2215936 382 1992294400 134512640 135197378 4294956240 18446744073709551615 134541957 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 541 382 91 167 0 372 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 2164

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

[startup+1.90121 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 19776
/proc/meminfo: memFree=657024/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=2164 CPUtime=1.89
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 407 0 0 0 189 0 0 0 25 0 1 0 1102339264 2215936 390 1992294400 134512640 135197378 4294956240 18446744073709551615 134552516 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 541 390 91 167 0 372 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 2164

[startup+2.00122 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 19776
/proc/meminfo: memFree=657024/2055920 swapFree=4178100/4192956
[pid=19775] ppid=19773 vsize=2232 CPUtime=1.99
/proc/19775/stat : 19775 (march_hi) R 19773 19775 14708 0 -1 4194304 409 0 0 0 199 0 0 0 25 0 1 0 1102339264 2285568 392 1992294400 134512640 135197378 4294956240 18446744073709551615 134539323 0 0 4096 0 0 0 0 17 1 0 0
/proc/19775/statm: 558 392 91 167 0 389 0
Current children cumulated CPU time (s) 1.99
Current children cumulated vsize (KiB) 2232

Child status: 10
Real time (s): 2.07699
CPU time (s): 2.07568
CPU user time (s): 2.07368
CPU system time (s): 0.001999
CPU usage (%): 99.9369
Max. virtual memory (cumulated for all children) (KiB): 2232

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.07368
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= 444
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= 7

runsolver used 0.009998 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node18 at 2009-03-29 05:18:54
IDJOB=1518205
IDBENCH=70660
IDSOLVER=521
FILE ID=node18/1518205-1238296734
PBS_JOBID= 9060977
Free space on /tmp= 66200 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/520/unif-k3-r4.25-v520-c2210-S1161147107-031.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518205-1238296734/watcher-1518205-1238296734 -o /tmp/evaluation-result-1518205-1238296734/solver-1518205-1238296734 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518205-1238296734.cnf

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

MD5SUM BENCH= 4cc7ee2f20081e6ebd36addd568f2c4e
RANDOM SEED=1882030721

node18.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		: 3000.214
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		: 3000.214
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:        658472 kB
Buffers:         99960 kB
Cached:        1191528 kB
SwapCached:       8808 kB
Active:         184336 kB
Inactive:      1119628 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        658472 kB
SwapTotal:     4192956 kB
SwapFree:      4178100 kB
Dirty:             800 kB
Writeback:           0 kB
Mapped:          16308 kB
Slab:            79492 kB
Committed_AS:  2949840 kB
PageTables:       1376 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= 66200 MiB
End job on node18 at 2009-03-29 05:18:56