Trace number 1518337

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 0.076987 0.0773569

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/420/
unif-k3-r4.25-v420-c1785-S1014608490-038.cnf
MD5SUMfa87bf22946652bd235c5205438c2d39
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 variables420
Number of clauses1785
Sum of the clauses size5355
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31785
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
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 420 variables and 1785 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, 0 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 420 free variables and 1785 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.514
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 176 duplicate clauses
0.00/0.01	c resolvent_look() :: found 85 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 420 variables and 1870 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 420 variabels and 1870 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1870 / 420 ) = 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 number of free variables = 420
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
0.03/0.07	c |.0000000000000000000000001100000000000000000000$$$$$$$$$$$$$$$$$|
0.03/0.07	
c |
0.03/0.07	c
0.03/0.07	c main():: nodeCount: 142
0.03/0.07	c main():: dead ends in main: 3
0.03/0.07	c main():: lookAheadCount: 10202
0.03/0.07	c main():: unitResolveCount: 2033
0.03/0.07	c main():: time=0.070000
0.03/0.07	c main():: necessary_assignments: 81
0.03/0.07	c main():: bin_sat: 0, bin_unsat 0
0.03/0.07	c main():: doublelook: #: 409, succes #: 264
0.03/0.07	c main():: doublelook: overall 4.124 of all possible doublelooks executed
0.03/0.07	c main():: doublelook: succesrate: 64.548, average DL_trigger: 40.022
0.03/0.07	c main():: SOLUTION VERIFIED :-)
0.03/0.07	s SATISFIABLE
0.03/0.07	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 -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 92 -93 94 -95 -96 -97 -98 -99 101 102 103 -104 -105 106 107 108 109 -111 113 -114 -115 -116 -117 118 119 120 -122 -123 124 125 -126 127 128 129 130 131 132 -133 134 135 -136 -137 138 139 -140 -141 -142 143 -145 146 147 -148 -150 -151 -152 -153 154 155 157 -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 -210 211 -212 -214 215 -216 217 218 -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 -266 267 268 -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 -299 -300 301 -302 303 304 -305 306 -307 -308 309 -310 -311 312 -313 -314 -315 -316 -317 318 319 -321 -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 -361 363 364 365 366 -367 -368 -369 370 -371 372 -373 374 -375 377 378 379 380 -381 -382 383 -384 385 386 -387 -389 390 -391 -392 -393 -394 395 -396 397 398 399 -400 401 -402 403 -404 -405 -406 -407 -408 409 -411 412 413 -414 -415 416 -417 -418 419 -420 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-1518337-1238298262/watcher-1518337-1238298262 -o /tmp/evaluation-result-1518337-1238298262/solver-1518337-1238298262 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518337-1238298262.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: 0.84 0.95 0.98 3/64 29600
/proc/meminfo: memFree=1014480/2055924 swapFree=4176792/4192956
[pid=29600] ppid=29598 vsize=984 CPUtime=0
/proc/29600/stat : 29600 (march_hi) R 29598 29600 29563 0 -1 4194304 139 0 0 0 0 0 0 0 18 0 1 0 1102492908 1007616 122 1992294400 134512640 135197378 4294956240 18446744073709551615 134565239 0 0 4096 0 0 0 0 17 1 0 0
/proc/29600/statm: 246 122 65 167 0 77 0

[startup+0.034573 s]
/proc/loadavg: 0.84 0.95 0.98 3/64 29600
/proc/meminfo: memFree=1014480/2055924 swapFree=4176792/4192956
[pid=29600] ppid=29598 vsize=1580 CPUtime=0.03
/proc/29600/stat : 29600 (march_hi) R 29598 29600 29563 0 -1 4194304 267 0 0 0 3 0 0 0 18 0 1 0 1102492908 1617920 250 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/29600/statm: 395 250 91 167 0 226 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1580

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

[startup+0.034573 s]
/proc/loadavg: 0.84 0.95 0.98 3/64 29600
/proc/meminfo: memFree=1014480/2055924 swapFree=4176792/4192956
[pid=29600] ppid=29598 vsize=1580 CPUtime=0.03
/proc/29600/stat : 29600 (march_hi) R 29598 29600 29563 0 -1 4194304 267 0 0 0 3 0 0 0 18 0 1 0 1102492908 1617920 250 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/29600/statm: 395 250 91 167 0 226 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1580

Child status: 10
Real time (s): 0.0773569
CPU time (s): 0.076987
CPU user time (s): 0.075988
CPU system time (s): 0.000999
CPU usage (%): 99.5218
Max. virtual memory (cumulated for all children) (KiB): 1580

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.075988
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= 285
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 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node6 at 2009-03-29 05:44:22
IDJOB=1518337
IDBENCH=70671
IDSOLVER=521
FILE ID=node6/1518337-1238298262
PBS_JOBID= 9061024
Free space on /tmp= 66324 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/420/unif-k3-r4.25-v420-c1785-S1014608490-038.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518337-1238298262/watcher-1518337-1238298262 -o /tmp/evaluation-result-1518337-1238298262/solver-1518337-1238298262 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518337-1238298262.cnf

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

MD5SUM BENCH= fa87bf22946652bd235c5205438c2d39
RANDOM SEED=950660406

node6.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		: 3000.236
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		: 3000.236
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:      2055924 kB
MemFree:       1014960 kB
Buffers:         98368 kB
Cached:         844176 kB
SwapCached:       9932 kB
Active:         138676 kB
Inactive:       817344 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1014960 kB
SwapTotal:     4192956 kB
SwapFree:      4176792 kB
Dirty:             928 kB
Writeback:           0 kB
Mapped:          19084 kB
Slab:            71012 kB
Committed_AS:  2797344 kB
PageTables:       1464 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= 66320 MiB
End job on node6 at 2009-03-29 05:44:22