Trace number 299987

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, and are wall clock time (not CPU 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
SATzilla FULLSAT 0.040992 0.0435221

General information on the benchmark

Namerandom/OnTreshold/3SAT/v400/
unif-k3-r4.26-v400-c1704-S2048803580-17.SAT.shuffled.cnf
MD5SUMfd7d232d07ea82b35604ae65ebcd0d41
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.005998
Satisfiable
(Un)Satisfiability was proved
Number of variables400
Number of clauses1704
Sum of the clauses size5112
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31704
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.04	c run March_dl for 5 seconds ... 
0.00/0.04	c Bin: Executing march_dl
0.00/0.04	c child exited successfully
0.00/0.04	c march_dl returned code 10.
0.00/0.04	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.04	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.04	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.04	c main()::
0.00/0.04	c initFormula():: searching for DIMACS p-line....
0.00/0.04	c initFormula():: the DIMACS p-line indicates a CNF of 400 variables and 1704 clauses.
0.00/0.04	c parseCNF():: parsing....
0.00/0.04	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.04	c runParser():: parsing was successful, warming up engines...
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.04	c preprocessing fase I completed:: there are now 400 free variables and 1704 clauses.
0.00/0.04	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.04	c doublelook_init():: 90% succes rate goal.
0.00/0.04	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 0
0.00/0.04	c lessRedundantTransformation():: nothing to be done.
0.00/0.04	c transformTo3SAT():: you gave me 400 variables and 1704 clauses.
0.00/0.04	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.04	c transformTo3SAT():: CHAINPLUS defined.
0.00/0.04	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.04	c transformTo3SAT():: the transformation yielded 400 variabels and 1704 clauses.
0.00/0.04	c main():: clause / variable ratio: ( 1704 / 400 ) = 4.26
0.00/0.04	c doublelook_init():: 90% succes rate goal.
0.00/0.04	c AddTernaryResolvents(): ternary clauses increased from 1704 to 1824
0.00/0.04	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 0
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.04	c check_ternary_clause_density :: high
0.00/0.04	c root full lookahead
0.00/0.04	c freevars: 400, independend: 400, ternary clauses: 1824 
0.00/0.04	c main():: all systems go!
0.00/0.04	c |----------------------------------------------------------------|
c |
0.00/0.04	c
0.00/0.04	c main():: nodeCount: 112
0.00/0.04	c main():: dead ends in main: 0
0.00/0.04	c main():: lookAheadCount: 12877
0.00/0.04	c main():: unitResolveCount: 1084
0.00/0.04	c main():: time=0.040000
0.00/0.04	c main():: necessary_assignments: 40
0.00/0.04	c main():: bin_sat: 0, bin_unsat 0
0.00/0.04	c main():: doublelook: #: 75, succes #: 56
0.00/0.04	c main():: doublelook: succesrate: 74.667, threshold: 0.216 * nrofvars
0.00/0.04	c main():: SOLUTION VERIFIED :-)
0.00/0.04	s SATISFIABLE
0.00/0.04	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 0
0.00/0.04	c SATZILLA_TIME=0.040000

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node34/watcher-299987-1171880589 -o ROOT/results/node34/solver-299987-1171880589 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/299987-1171880589/SATzilla2007_F /tmp/evaluation/299987-1171880589/instance-299987-1171880589.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 1.06 1.01 1.00 3/64 15838
/proc/meminfo: memFree=721064/2055920 swapFree=4183096/4192956
[pid=15838] ppid=15836 vsize=1512 CPUtime=0
/proc/15838/stat : 15838 (SATzilla2007_F) R 15836 15838 6093 0 -1 4194304 142 0 0 0 0 0 0 0 18 0 1 0 181822727 1548288 125 18446744073709551615 134512640 135581085 4294956624 18446744073709551615 135218003 0 0 4096 0 0 0 0 17 1 0 0
/proc/15838/statm: 378 125 110 260 0 84 0
[pid=15839] ppid=15838 vsize=772 CPUtime=0
/proc/15839/stat : 15839 (march_dl) R 15838 15838 6093 0 -1 4194304 112 0 0 0 0 0 0 0 18 0 1 0 181822728 790528 103 18446744073709551615 134512640 134996440 4294956656 18446744073709551615 134671537 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15839/statm: 193 103 53 118 0 72 0

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

Child status: 10
Real time (s): 0.0435221
CPU time (s): 0.040992
CPU user time (s): 0.039993
CPU system time (s): 0.000999
CPU usage (%): 94.1866
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.039993
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= 393
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= 13
involuntary context switches= 1

runsolver used 0.004999 second user time and 0.003999 second system time

The end

Launcher Data (download as text)

Begin job on node34 on Mon Feb 19 10:23:09 UTC 2007

IDJOB= 299987
IDBENCH= 20023
IDSOLVER= 136
FILE ID= node34/299987-1171880589

PBS_JOBID= 3839651

Free space on /tmp= 66554 MiB

SOLVER NAME= SATzilla FULL
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v400/unif-k3-r4.26-v400-c1704-S2048803580-17.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/299987-1171880589/SATzilla2007_F /tmp/evaluation/299987-1171880589/instance-299987-1171880589.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node34/watcher-299987-1171880589 -o ROOT/results/node34/solver-299987-1171880589 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/299987-1171880589/SATzilla2007_F /tmp/evaluation/299987-1171880589/instance-299987-1171880589.cnf            

META MD5SUM SOLVER= cf97f3a2fd0b75b608f79c1ce3d2be4a
MD5SUM BENCH=  fd7d232d07ea82b35604ae65ebcd0d41

RANDOM SEED= 115648521

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node34.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.234
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		: 3000.234
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:        721536 kB
Buffers:         53836 kB
Cached:        1156092 kB
SwapCached:       4688 kB
Active:         793780 kB
Inactive:       427144 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        721536 kB
SwapTotal:     4192956 kB
SwapFree:      4183096 kB
Dirty:           10148 kB
Writeback:           0 kB
Mapped:          16024 kB
Slab:            99504 kB
Committed_AS:   511236 kB
PageTables:       1400 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= 66554 MiB

End job on node34 on Mon Feb 19 10:23:09 UTC 2007