Trace number 1628274

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 0.486925 0.487656

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/460/
unif-k3-r4.25-v460-c1955-S1546885609-031.cnf
MD5SUMab528a6ad10c0959e2d17075599d3c26
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 

0.01/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.01/0.02	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.01/0.02	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.01/0.02	c main()::
0.01/0.02	c initFormula():: searching for DIMACS p-line....
0.01/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 460 variables and 1955 clauses.
0.01/0.02	c parseCNF():: parsing....
0.01/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.01/0.02	c runParser():: parsing was successful, warming up engines...
0.01/0.02	c simplify_formula():: removed 0 tautological, 21 satisfied and 0 duplicate clauses
0.01/0.02	c preprocessing fase I completed:: there are now 457 free variables and 1934 clauses.
0.01/0.02	c stat :: sign balance is biased by 0.454
0.01/0.02	c using 3-SAT heuristics (occurence based diff)
0.01/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 155 duplicate clauses
0.01/0.02	c resolvent_look() :: found 81 resolvents
0.01/0.02	c lessRedundantTransformation():: nothing to be done.
0.01/0.02	c transformTo3SAT():: you gave me 460 variables and 2015 clauses.
0.01/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.01/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.01/0.02	c transformTo3SAT():: the transformation yielded 460 variabels and 2015 clauses.
0.01/0.02	c main():: clause / variable ratio: ( 2015 / 460 ) = 4.38
0.01/0.02	c longest clause has size 3
0.01/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.02	c number of free variables = 457
0.01/0.02	c dynamic_preselect_setsize :: off
0.01/0.02	c main():: all systems go!
0.01/0.02	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/19) NodeCount: 167
0.09/0.11	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
0.39/0.48	c |0000010000000000000.00010100001000000000000000$$$$$$$$$$$$$$$$$$|
0.39/0.48	
c |**************************************************************
0.39/0.48	c
0.39/0.48	c main():: nodeCount: 963
0.39/0.48	c main():: dead ends in main: 25
0.39/0.48	c main():: lookAheadCount: 66616
0.39/0.48	c main():: unitResolveCount: 11370
0.39/0.48	c main():: time=0.480000
0.39/0.48	c main():: necessary_assignments: 288
0.39/0.48	c main():: bin_sat: 0, bin_unsat 0
0.39/0.48	c main():: doublelook: #: 3342, succes #: 2314
0.39/0.48	c main():: doublelook: overall 5.169 of all possible doublelooks executed
0.39/0.48	c main():: doublelook: succesrate: 69.240, average DL_trigger: 46.683
0.39/0.48	c main():: SOLUTION VERIFIED :-)
0.39/0.48	s SATISFIABLE
0.39/0.48	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 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 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 -124 -125 126 127 -128 129 -130 131 132 133 -134 -135 136 137 138 -139 -140 141 143 145 146 147 -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 -183 184 186 -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 -218 219 -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 -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 -323 325 326 327 -328 329 330 -331 -332 333 -334 335 -337 -338 339 -341 -342 343 344 346 347 348 349 350 351 -352 -353 -354 -355 356 357 -358 359 -360 -361 -362 363 364 -365 366 367 368 -369 370 -371 372 373 375 376 -377 -378 -379 380 -381 -382 -383 -384 -386 387 388 -389 390 391 -392 393 394 395 396 -397 -398 -399 400 401 -403 404 405 406 407 -408 -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 -441 442 -443 444 -445 446 -447 -448 -449 450 451 452 453 -454 455 -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-1628274-1240142321/watcher-1628274-1240142321 -o /tmp/evaluation-result-1628274-1240142321/solver-1628274-1240142321 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1628274-1240142321.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: 0.85 0.97 0.99 3/64 24659
/proc/meminfo: memFree=1246056/2055920 swapFree=4192956/4192956
[pid=24659] ppid=24657 vsize=980 CPUtime=0
/proc/24659/stat : 24659 (march_hi) R 24657 24659 24622 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 42265598 1003520 126 1992294400 134512640 135197378 4294956240 18446744073709551615 134713215 0 0 4096 0 0 0 0 17 1 0 0
/proc/24659/statm: 245 126 65 167 0 76 0

[startup+0.019585 s]
/proc/loadavg: 0.85 0.97 0.99 3/64 24659
/proc/meminfo: memFree=1246056/2055920 swapFree=4192956/4192956
[pid=24659] ppid=24657 vsize=1120 CPUtime=0.01
/proc/24659/stat : 24659 (march_hi) R 24657 24659 24622 0 -1 4194304 173 0 0 0 1 0 0 0 18 0 1 0 42265598 1146880 156 1992294400 134512640 135197378 4294956240 18446744073709551615 134649176 0 0 4096 0 0 0 0 17 1 0 0
/proc/24659/statm: 280 156 81 167 0 111 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1120

[startup+0.101592 s]
/proc/loadavg: 0.85 0.97 0.99 3/64 24659
/proc/meminfo: memFree=1246056/2055920 swapFree=4192956/4192956
[pid=24659] ppid=24657 vsize=1688 CPUtime=0.09
/proc/24659/stat : 24659 (march_hi) R 24657 24659 24622 0 -1 4194304 278 0 0 0 9 0 0 0 18 0 1 0 42265598 1728512 261 1992294400 134512640 135197378 4294956240 18446744073709551615 134552435 0 0 4096 0 0 0 0 17 1 0 0
/proc/24659/statm: 422 261 91 167 0 253 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1688

[startup+0.301612 s]
/proc/loadavg: 0.85 0.97 0.99 3/64 24659
/proc/meminfo: memFree=1246056/2055920 swapFree=4192956/4192956
[pid=24659] ppid=24657 vsize=1840 CPUtime=0.29
/proc/24659/stat : 24659 (march_hi) R 24657 24659 24622 0 -1 4194304 300 0 0 0 29 0 0 0 19 0 1 0 42265598 1884160 283 1992294400 134512640 135197378 4294956240 18446744073709551615 134539373 0 0 4096 0 0 0 0 17 1 0 0
/proc/24659/statm: 460 283 91 167 0 291 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1840

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

[startup+0.401621 s]
/proc/loadavg: 0.85 0.97 0.99 3/64 24659
/proc/meminfo: memFree=1246056/2055920 swapFree=4192956/4192956
[pid=24659] ppid=24657 vsize=1840 CPUtime=0.39
/proc/24659/stat : 24659 (march_hi) R 24657 24659 24622 0 -1 4194304 303 0 0 0 39 0 0 0 20 0 1 0 42265598 1884160 286 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/24659/statm: 460 286 91 167 0 291 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 1840

Child status: 10
Real time (s): 0.487656
CPU time (s): 0.486925
CPU user time (s): 0.483926
CPU system time (s): 0.002999
CPU usage (%): 99.8501
Max. virtual memory (cumulated for all children) (KiB): 1840

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.483926
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 318
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 0.006998 second system time

The end

Launcher Data 

Begin job on node24 at 2009-04-19 13:58:41
IDJOB=1628274
IDBENCH=70730
IDSOLVER=583
FILE ID=node24/1628274-1240142321
PBS_JOBID= 9159270
Free space on /tmp= 66412 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/460/unif-k3-r4.25-v460-c1955-S1546885609-031.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1628274-1240142321/watcher-1628274-1240142321 -o /tmp/evaluation-result-1628274-1240142321/solver-1628274-1240142321 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1628274-1240142321.cnf

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

MD5SUM BENCH= ab528a6ad10c0959e2d17075599d3c26
RANDOM SEED=1964123125

node24.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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1246536 kB
Buffers:         94396 kB
Cached:         614912 kB
SwapCached:          0 kB
Active:         306892 kB
Inactive:       416764 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1246536 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:             928 kB
Writeback:           0 kB
Mapped:          24060 kB
Slab:            71668 kB
Committed_AS:   166088 kB
PageTables:       1440 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= 66412 MiB
End job on node24 at 2009-04-19 13:58:41