Trace number 1518710

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_nn nnSAT 0.239962 0.240888

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/440/
unif-k3-r4.25-v440-c1870-S725789261-031.cnf
MD5SUMf67f090e24644066ce5872fbc256498a
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.011997
Satisfiable
(Un)Satisfiability was proved
Number of variables440
Number of clauses1870
Sum of the clauses size5610
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31870
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 440 variables and 1870 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, 15 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 438 free variables and 1855 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.458
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 81 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 440 variables and 1936 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 440 variabels and 1936 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 1936 / 440 ) = 4.40
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 = 438
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: 36
0.00/0.02	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: 511
0.10/0.16	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
0.20/0.24	c |10000000000001000000000000000000000000000000$$$$$$$$$$$$$$$$$$$|
0.20/0.24	
c |*******************************
0.20/0.24	c
0.20/0.24	c main():: nodeCount: 798
0.20/0.24	c main():: dead ends in main: 1
0.20/0.24	c main():: lookAheadCount: 65320
0.20/0.24	c main():: unitResolveCount: 3942
0.20/0.24	c main():: time=0.230000
0.20/0.24	c main():: necessary_assignments: 86
0.20/0.24	c main():: bin_sat: 0, bin_unsat 0
0.20/0.24	c main():: doublelook: #: 1464, succes #: 437
0.20/0.24	c main():: doublelook: overall 2.254 of all possible doublelooks executed
0.20/0.24	c main():: doublelook: succesrate: 29.850, average DL_trigger: 43.098
0.20/0.24	c main():: SOLUTION VERIFIED :-)
0.20/0.24	s SATISFIABLE
0.20/0.24	v -1 2 -4 -5 6 7 10 -11 12 -13 -14 15 -16 -17 18 19 -20 -21 22 23 24 -25 -26 27 -29 -30 -31 -32 33 34 -35 -36 37 -38 39 40 41 -42 -43 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 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 -129 -130 131 132 133 -134 -135 -136 137 138 -139 -140 -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 -184 185 186 187 -188 189 190 -191 -192 193 -194 195 196 197 -198 -199 -200 -201 -202 -203 -204 -206 207 -208 -209 210 211 -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 -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 -377 378 379 380 -381 -382 383 385 386 -387 -388 389 391 392 -393 394 395 -396 -397 -398 400 -401 -402 -403 404 -405 406 407 408 -409 -410 412 413 414 415 -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 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-1518710-1238303124/watcher-1518710-1238303124 -o /tmp/evaluation-result-1518710-1238303124/solver-1518710-1238303124 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1518710-1238303124.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 1.00 2/64 23985
/proc/meminfo: memFree=823016/2055920 swapFree=4172472/4192956
[pid=23985] ppid=23983 vsize=976 CPUtime=0
/proc/23985/stat : 23985 (march_nn) R 23983 23985 23686 0 -1 4194304 142 0 0 0 0 0 0 0 18 0 1 0 1102975645 999424 125 1992294400 134512640 135197250 4294956240 18446744073709551615 134687743 0 0 4096 0 0 0 0 17 1 0 0
/proc/23985/statm: 244 125 66 167 0 75 0

[startup+0.0669991 s]
/proc/loadavg: 1.00 1.00 1.00 2/64 23985
/proc/meminfo: memFree=823016/2055920 swapFree=4172472/4192956
[pid=23985] ppid=23983 vsize=1656 CPUtime=0.06
/proc/23985/stat : 23985 (march_nn) R 23983 23985 23686 0 -1 4194304 273 0 0 0 6 0 0 0 18 0 1 0 1102975645 1695744 256 1992294400 134512640 135197250 4294956240 18446744073709551615 134570780 0 0 4096 0 0 0 0 17 1 0 0
/proc/23985/statm: 414 256 93 167 0 245 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1656

[startup+0.102002 s]
/proc/loadavg: 1.00 1.00 1.00 2/64 23985
/proc/meminfo: memFree=823016/2055920 swapFree=4172472/4192956
[pid=23985] ppid=23983 vsize=1656 CPUtime=0.1
/proc/23985/stat : 23985 (march_nn) R 23983 23985 23686 0 -1 4194304 276 0 0 0 10 0 0 0 18 0 1 0 1102975645 1695744 259 1992294400 134512640 135197250 4294956240 18446744073709551615 134572875 0 0 4096 0 0 0 0 17 1 0 0
/proc/23985/statm: 414 259 93 167 0 245 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1656

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

[startup+0.202013 s]
/proc/loadavg: 1.00 1.00 1.00 2/64 23985
/proc/meminfo: memFree=823016/2055920 swapFree=4172472/4192956
[pid=23985] ppid=23983 vsize=1792 CPUtime=0.2
/proc/23985/stat : 23985 (march_nn) R 23983 23985 23686 0 -1 4194304 289 0 0 0 20 0 0 0 19 0 1 0 1102975645 1835008 272 1992294400 134512640 135197250 4294956240 18446744073709551615 134525420 0 0 4096 0 0 0 0 17 1 0 0
/proc/23985/statm: 448 272 93 167 0 279 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 1792

Child status: 10
Real time (s): 0.240888
CPU time (s): 0.239962
CPU user time (s): 0.238963
CPU system time (s): 0.000999
CPU usage (%): 99.6156
Max. virtual memory (cumulated for all children) (KiB): 1792

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.238963
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= 299
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 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node37 at 2009-03-29 07:05:24
IDJOB=1518710
IDBENCH=70702
IDSOLVER=522
FILE ID=node37/1518710-1238303124
PBS_JOBID= 9061031
Free space on /tmp= 66424 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S725789261-031.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518710-1238303124/watcher-1518710-1238303124 -o /tmp/evaluation-result-1518710-1238303124/solver-1518710-1238303124 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1518710-1238303124.cnf

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

MD5SUM BENCH= f67f090e24644066ce5872fbc256498a
RANDOM SEED=895907234

node37.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		: 3000.213
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		: 3000.213
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:        823432 kB
Buffers:        106212 kB
Cached:        1017972 kB
SwapCached:      14544 kB
Active:         363532 kB
Inactive:       776696 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        823432 kB
SwapTotal:     4192956 kB
SwapFree:      4172472 kB
Dirty:             792 kB
Writeback:           0 kB
Mapped:          18764 kB
Slab:            78316 kB
Committed_AS:  2806500 kB
PageTables:       1384 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= 66424 MiB
End job on node37 at 2009-03-29 07:05:25