Trace number 300085

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
March KS 2007-02-08SAT 1.52077 1.52286

General information on the benchmark

Namerandom/OnTreshold/3SAT/v400/
unif-k3-r4.26-v400-c1704-S141590207-13.SAT.shuffled.cnf
MD5SUM7c6ec57a1bd3ce147e9f90a32f77311f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.039993
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)

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 400 variables and 1704 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 10 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 399 free variables and 1694 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.472
0.00/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 170 duplicate clauses
0.00/0.01	c resolvent_look() :: found 84 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 400 variables and 1778 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 400 variabels and 1778 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1778 / 400 ) = 4.45
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c suggested doublelook initial :: 0
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 136 JD: 16
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 |***************************************************************
c |****************************************************************| 1 NC: 3013 JD: 16
1.43/1.46	c |----------------------------------------------------------------|
1.43/1.52	c solution bin :: 1100000000000000.1000000000000000
1.43/1.52	c direction branchin :: current_rights = 3
1.43/1.52	
c |
1.43/1.52	c
1.43/1.52	c main():: nodeCount: 3155
1.43/1.52	c main():: dead ends in main: 117
1.43/1.52	c main():: lookAheadCount: 221057
1.43/1.52	c main():: unitResolveCount: 43485
1.43/1.52	c main():: time=1.510000
1.43/1.52	c main():: necessary_assignments: 912
1.43/1.52	c main():: bin_sat: 0, bin_unsat 0
1.43/1.52	c main():: doublelook: #: 13030, succes #: 9737
1.43/1.52	c main():: doublelook: overall 6.121 of all possible doublelooks executed
1.43/1.52	c main():: doublelook: succesrate: 74.728, average DL_trigger: 6337.361
1.43/1.52	c main():: SOLUTION VERIFIED :-)
1.43/1.52	s SATISFIABLE
1.43/1.52	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

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/node30/watcher-300085-1171881883 -o ROOT/results/node30/solver-300085-1171881883 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/300085-1171881883/march_ks /tmp/evaluation/300085-1171881883/instance-300085-1171881883.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: 0.92 0.98 0.99 3/77 9233
/proc/meminfo: memFree=851304/2055920 swapFree=4146080/4192956
[pid=9233] ppid=9231 vsize=796 CPUtime=0
/proc/9233/stat : 9233 (march_ks) R 9231 9233 3399 0 -1 4194304 123 0 0 0 0 0 0 0 18 0 1 0 181952360 815104 105 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134560568 0 0 4096 0 0 0 0 17 1 0 0
/proc/9233/statm: 199 106 51 123 0 74 0

[startup+0.107409 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 9233
/proc/meminfo: memFree=851304/2055920 swapFree=4146080/4192956
[pid=9233] ppid=9231 vsize=1192 CPUtime=0.1
/proc/9233/stat : 9233 (march_ks) R 9231 9233 3399 0 -1 4194304 244 0 0 0 10 0 0 0 18 0 1 0 181952360 1220608 226 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/9233/statm: 298 226 73 123 0 173 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1192

[startup+0.515466 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 9233
/proc/meminfo: memFree=851304/2055920 swapFree=4146080/4192956
[pid=9233] ppid=9231 vsize=1332 CPUtime=0.51
/proc/9233/stat : 9233 (march_ks) R 9231 9233 3399 0 -1 4194304 260 0 0 0 51 0 0 0 22 0 1 0 181952360 1363968 242 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134542776 0 0 4096 0 0 0 0 17 1 0 0
/proc/9233/statm: 333 242 73 123 0 208 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1332

[startup+1.33558 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 9234
/proc/meminfo: memFree=850528/2055920 swapFree=4146080/4192956
[pid=9233] ppid=9231 vsize=1332 CPUtime=1.33
/proc/9233/stat : 9233 (march_ks) R 9231 9233 3399 0 -1 4194304 267 0 0 0 133 0 0 0 25 0 1 0 181952360 1363968 249 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134541304 0 0 4096 0 0 0 0 17 1 0 0
/proc/9233/statm: 333 249 73 123 0 208 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1332

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

[startup+1.4376 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 9234
/proc/meminfo: memFree=850528/2055920 swapFree=4146080/4192956
[pid=9233] ppid=9231 vsize=1332 CPUtime=1.43
/proc/9233/stat : 9233 (march_ks) R 9231 9233 3399 0 -1 4194304 267 0 0 0 143 0 0 0 25 0 1 0 181952360 1363968 249 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134598116 0 0 4096 0 0 0 0 17 1 0 0
/proc/9233/statm: 333 249 73 123 0 208 0
Current children cumulated CPU time (s) 1.43
Current children cumulated vsize (KiB) 1332

Child status: 10
Real time (s): 1.52286
CPU time (s): 1.52077
CPU user time (s): 1.51877
CPU system time (s): 0.001999
CPU usage (%): 99.8629
Max. virtual memory (cumulated for all children) (KiB): 1332

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.51877
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= 270
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= 8
involuntary context switches= 31

runsolver used 0.002999 second user time and 0.011998 second system time

The end

Launcher Data (download as text)

Begin job on node30 on Mon Feb 19 10:44:43 UTC 2007

IDJOB= 300085
IDBENCH= 20026
IDSOLVER= 111
FILE ID= node30/300085-1171881883

PBS_JOBID= 3839660

Free space on /tmp= 66561 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v400/unif-k3-r4.26-v400-c1704-S141590207-13.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/300085-1171881883/march_ks /tmp/evaluation/300085-1171881883/instance-300085-1171881883.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node30/watcher-300085-1171881883 -o ROOT/results/node30/solver-300085-1171881883 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/300085-1171881883/march_ks /tmp/evaluation/300085-1171881883/instance-300085-1171881883.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  7c6ec57a1bd3ce147e9f90a32f77311f

RANDOM SEED= 707903554

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node30.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		: 3000.270
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		: 3000.270
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:        851648 kB
Buffers:         44592 kB
Cached:        1042672 kB
SwapCached:      15288 kB
Active:         837968 kB
Inactive:       275448 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        851648 kB
SwapTotal:     4192956 kB
SwapFree:      4146080 kB
Dirty:            2448 kB
Writeback:           0 kB
Mapped:          29964 kB
Slab:            76272 kB
Committed_AS:   633600 kB
PageTables:       1884 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= 66561 MiB

End job on node30 on Mon Feb 19 10:44:45 UTC 2007