Trace number 1518601

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 0.463928 0.464195

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/400/
unif-k3-r4.25-v400-c1700-S1326039470-063.cnf
MD5SUM2e40295bba29f3b31b5d5a615b1b160f
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 variables400
Number of clauses1700
Sum of the clauses size5100
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31700
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 400 variables and 1700 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 400 free variables and 1700 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.451
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 149 duplicate clauses
0.00/0.01	c resolvent_look() :: found 90 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 400 variables and 1790 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 1790 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1790 / 400 ) = 4.47
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 = 400
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/14) NodeCount: 189
0.04/0.09	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
0.39/0.46	c |00000100000000.0000000100000100000000000000000000000000000000$$$|
0.39/0.46	
c |**************************************************************
0.39/0.46	c
0.39/0.46	c main():: nodeCount: 1052
0.39/0.46	c main():: dead ends in main: 31
0.39/0.46	c main():: lookAheadCount: 69547
0.39/0.46	c main():: unitResolveCount: 12235
0.39/0.46	c main():: time=0.460000
0.39/0.46	c main():: necessary_assignments: 350
0.39/0.46	c main():: bin_sat: 0, bin_unsat 0
0.39/0.46	c main():: doublelook: #: 3568, succes #: 2496
0.39/0.46	c main():: doublelook: overall 5.289 of all possible doublelooks executed
0.39/0.46	c main():: doublelook: succesrate: 69.955, average DL_trigger: 45.415
0.39/0.46	c main():: SOLUTION VERIFIED :-)
0.39/0.46	s SATISFIABLE
0.39/0.46	v 1 -2 -3 4 -5 -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 -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 -110 113 -115 116 117 -118 119 -120 121 -122 -123 -124 125 127 -128 129 -130 -131 132 -133 -134 -135 136 137 -138 139 140 141 -142 -143 145 146 147 148 -149 150 151 152 153 -154 155 156 157 158 -159 -160 161 -162 163 164 165 -167 -168 -169 170 -171 172 173 -174 175 176 -177 -178 179 180 -181 182 183 185 186 -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 -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 -309 311 312 -313 -314 315 316 317 318 319 -320 321 -322 323 324 -325 -326 328 329 -331 332 -333 -334 335 -336 337 338 -339 341 342 343 344 345 346 347 348 -349 -350 -351 -354 355 357 -358 -359 -360 -361 362 -363 364 -365 -366 367 369 -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 

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-1518601-1238301797/watcher-1518601-1238301797 -o /tmp/evaluation-result-1518601-1238301797/solver-1518601-1238301797 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518601-1238301797.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: 0.99 0.97 0.98 3/64 32121
/proc/meminfo: memFree=821536/2055920 swapFree=4177928/4192956
[pid=32121] ppid=32119 vsize=976 CPUtime=0
/proc/32121/stat : 32121 (march_hi) R 32119 32121 31995 0 -1 4194304 136 0 0 0 0 0 0 0 18 0 1 0 1102845971 999424 119 1992294400 134512640 135197378 4294956240 18446744073709551615 134693724 0 0 4096 0 0 0 0 17 1 0 0
/proc/32121/statm: 244 119 65 167 0 75 0

[startup+0.0434719 s]
/proc/loadavg: 0.99 0.97 0.98 3/64 32121
/proc/meminfo: memFree=821536/2055920 swapFree=4177928/4192956
[pid=32121] ppid=32119 vsize=1556 CPUtime=0.04
/proc/32121/stat : 32121 (march_hi) R 32119 32121 31995 0 -1 4194304 249 0 0 0 4 0 0 0 18 0 1 0 1102845971 1593344 232 1992294400 134512640 135197378 4294956240 18446744073709551615 134697414 0 0 4096 0 0 0 0 17 1 0 0
/proc/32121/statm: 389 232 91 167 0 220 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 1556

[startup+0.101484 s]
/proc/loadavg: 0.99 0.97 0.98 3/64 32121
/proc/meminfo: memFree=821536/2055920 swapFree=4177928/4192956
[pid=32121] ppid=32119 vsize=1556 CPUtime=0.09
/proc/32121/stat : 32121 (march_hi) R 32119 32121 31995 0 -1 4194304 259 0 0 0 9 0 0 0 18 0 1 0 1102845971 1593344 242 1992294400 134512640 135197378 4294956240 18446744073709551615 134525272 0 0 4096 0 0 0 0 17 1 0 0
/proc/32121/statm: 389 242 91 167 0 220 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1556

[startup+0.301526 s]
/proc/loadavg: 0.99 0.97 0.98 3/64 32121
/proc/meminfo: memFree=821536/2055920 swapFree=4177928/4192956
[pid=32121] ppid=32119 vsize=1688 CPUtime=0.29
/proc/32121/stat : 32121 (march_hi) R 32119 32121 31995 0 -1 4194304 271 0 0 0 29 0 0 0 19 0 1 0 1102845971 1728512 254 1992294400 134512640 135197378 4294956240 18446744073709551615 134539232 0 0 4096 0 0 0 0 17 1 0 0
/proc/32121/statm: 422 254 91 167 0 253 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1688

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

[startup+0.401548 s]
/proc/loadavg: 0.99 0.97 0.98 3/64 32121
/proc/meminfo: memFree=821536/2055920 swapFree=4177928/4192956
[pid=32121] ppid=32119 vsize=1688 CPUtime=0.39
/proc/32121/stat : 32121 (march_hi) R 32119 32121 31995 0 -1 4194304 274 0 0 0 39 0 0 0 19 0 1 0 1102845971 1728512 257 1992294400 134512640 135197378 4294956240 18446744073709551615 134525420 0 0 4096 0 0 0 0 17 1 0 0
/proc/32121/statm: 422 257 91 167 0 253 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 1688

Child status: 10
Real time (s): 0.464195
CPU time (s): 0.463928
CPU user time (s): 0.461929
CPU system time (s): 0.001999
CPU usage (%): 99.9425
Max. virtual memory (cumulated for all children) (KiB): 1688

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.461929
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= 310
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 0.006998 second system time

The end

Launcher Data 

Begin job on node10 at 2009-03-29 06:43:17
IDJOB=1518601
IDBENCH=70693
IDSOLVER=521
FILE ID=node10/1518601-1238301797
PBS_JOBID= 9061063
Free space on /tmp= 65604 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/400/unif-k3-r4.25-v400-c1700-S1326039470-063.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518601-1238301797/watcher-1518601-1238301797 -o /tmp/evaluation-result-1518601-1238301797/solver-1518601-1238301797 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518601-1238301797.cnf

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

MD5SUM BENCH= 2e40295bba29f3b31b5d5a615b1b160f
RANDOM SEED=749608499

node10.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		: 3000.272
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		: 3000.272
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:        821952 kB
Buffers:         99104 kB
Cached:        1034536 kB
SwapCached:       8896 kB
Active:         267012 kB
Inactive:       877624 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        821952 kB
SwapTotal:     4192956 kB
SwapFree:      4177928 kB
Dirty:             796 kB
Writeback:           0 kB
Mapped:          16596 kB
Slab:            75356 kB
Committed_AS:  2790004 kB
PageTables:       1380 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= 65604 MiB
End job on node10 at 2009-03-29 06:43:17