Trace number 1628247

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 0.032994 0.033366

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/440/
unif-k3-r4.25-v440-c1870-S208461254-049.cnf
MD5SUMcb7c78e2db807d1456447efe0ef16fcf
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 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, 5 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 439 free variables and 1865 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.571
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 174 duplicate clauses
0.00/0.02	c resolvent_look() :: found 76 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 440 variables and 1941 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 1941 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 1941 / 440 ) = 4.41
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 = 439
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
0.00/0.03	c |.000000000000000000000000000000000000000000000000000000000000$$$|
0.00/0.03	
c |
0.00/0.03	c
0.00/0.03	c main():: nodeCount: 61
0.00/0.03	c main():: dead ends in main: 0
0.00/0.03	c main():: lookAheadCount: 4955
0.00/0.03	c main():: unitResolveCount: 416
0.00/0.03	c main():: time=0.030000
0.00/0.03	c main():: necessary_assignments: 10
0.00/0.03	c main():: bin_sat: 0, bin_unsat 0
0.00/0.03	c main():: doublelook: #: 54, succes #: 13
0.00/0.03	c main():: doublelook: overall 1.093 of all possible doublelooks executed
0.00/0.03	c main():: doublelook: succesrate: 24.074, average DL_trigger: 34.143
0.00/0.03	c main():: SOLUTION VERIFIED :-)
0.00/0.03	s SATISFIABLE
0.00/0.03	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 35 36 -37 38 -39 40 41 42 43 44 45 -46 -47 49 -50 -51 52 53 54 55 56 -57 -58 -59 60 -61 -62 -63 64 65 -66 -67 -68 -69 -70 72 73 -74 75 -77 78 -79 80 81 -82 -83 84 85 -86 87 -88 89 90 91 92 -93 -94 95 96 -97 -98 100 101 102 103 104 -105 106 -107 108 -109 111 -112 113 114 -115 116 -117 118 -119 -120 -121 122 123 -124 125 126 -127 -128 -130 -131 -132 133 134 -135 136 -137 138 -139 -140 141 142 -143 144 -145 -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 -173 174 175 176 178 179 180 181 -182 183 -184 185 -186 -187 188 189 191 -192 -193 194 195 -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 -222 223 225 226 227 -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 -256 257 259 260 -261 -262 -263 -264 -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 -309 310 311 313 314 315 -316 317 318 319 -320 321 -323 324 326 -327 328 -329 -330 331 332 -333 -334 336 337 338 -339 340 341 342 -343 344 -345 346 -347 -348 -349 350 -351 -352 353 -354 -355 356 -357 358 359 -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 -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 -429 431 -432 433 -434 435 -436 438 -439 440 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-1628247-1240141798/watcher-1628247-1240141798 -o /tmp/evaluation-result-1628247-1240141798/solver-1628247-1240141798 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1628247-1240141798.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: 0.90 0.97 0.99 3/64 26382
/proc/meminfo: memFree=697168/2055920 swapFree=4192956/4192956
[pid=26382] ppid=26380 vsize=976 CPUtime=0
/proc/26382/stat : 26382 (march_hi) R 26380 26382 25426 0 -1 4194304 141 0 0 0 0 0 0 0 18 0 1 0 42212918 999424 124 1992294400 134512640 135197378 4294956240 18446744073709551615 134713223 0 0 4096 0 0 0 0 17 1 0 0
/proc/26382/statm: 244 124 65 167 0 75 0

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

Child status: 10
Real time (s): 0.033366
CPU time (s): 0.032994
CPU user time (s): 0.032994
CPU system time (s): 0
CPU usage (%): 98.8852
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.032994
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 291
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 0.001999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node21 at 2009-04-19 13:49:58
IDJOB=1628247
IDBENCH=70703
IDSOLVER=583
FILE ID=node21/1628247-1240141798
PBS_JOBID= 9159251
Free space on /tmp= 66408 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S208461254-049.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1628247-1240141798/watcher-1628247-1240141798 -o /tmp/evaluation-result-1628247-1240141798/solver-1628247-1240141798 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1628247-1240141798.cnf

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

MD5SUM BENCH= cb7c78e2db807d1456447efe0ef16fcf
RANDOM SEED=164188928

node21.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		: 3000.233
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		: 3000.233
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:        697584 kB
Buffers:         99296 kB
Cached:        1148300 kB
SwapCached:          0 kB
Active:         330964 kB
Inactive:       939768 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        697584 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            1188 kB
Writeback:           0 kB
Mapped:          23700 kB
Slab:            73608 kB
Committed_AS:   177980 kB
PageTables:       1376 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= 66408 MiB
End job on node21 at 2009-04-19 13:49:58