Trace number 1518661

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 4.75928 4.76206

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/440/
unif-k3-r4.25-v440-c1870-S787972994-025.cnf
MD5SUM195829daef01dc74526b389936ef96cc
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.012997
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, 6 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 439 free variables and 1864 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.405
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 152 duplicate clauses
0.00/0.02	c resolvent_look() :: found 80 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 440 variables and 1944 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 1944 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 1944 / 440 ) = 4.42
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 |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/15) NodeCount: 148
0.03/0.08	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 1/15) NodeCount: 6039
2.79/2.83	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
4.69/4.76	c |100000000001000.000001000000000000000000000000000$$$$$$$$$$$$$$$|
4.69/4.76	
c |*******************************
4.69/4.76	c
4.69/4.76	c main():: nodeCount: 10181
4.69/4.76	c main():: dead ends in main: 240
4.69/4.76	c main():: lookAheadCount: 649926
4.69/4.76	c main():: unitResolveCount: 119164
4.69/4.76	c main():: time=4.750000
4.69/4.76	c main():: necessary_assignments: 2483
4.69/4.76	c main():: bin_sat: 0, bin_unsat 0
4.69/4.76	c main():: doublelook: #: 38905, succes #: 27713
4.69/4.76	c main():: doublelook: overall 6.206 of all possible doublelooks executed
4.69/4.76	c main():: doublelook: succesrate: 71.232, average DL_trigger: 49.207
4.69/4.76	c main():: SOLUTION VERIFIED :-)
4.69/4.76	s SATISFIABLE
4.69/4.76	v 1 -2 3 4 5 6 7 8 -9 10 -11 -12 -13 14 -15 -16 -17 -18 19 21 22 -23 -24 -25 -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 -60 -61 62 -63 64 65 66 -67 68 69 70 -71 72 73 74 75 76 78 -79 -80 82 83 -84 85 86 87 88 -89 90 -91 92 93 94 95 -96 97 98 -99 100 101 -102 103 -105 -106 -107 108 -109 -110 111 112 113 114 -115 117 118 -119 -121 -123 -124 125 126 127 128 129 -130 -131 132 -133 -134 -135 136 137 -138 -139 -140 141 -142 144 -145 146 147 148 149 150 -151 -152 153 154 155 -157 -158 -159 -160 -161 -163 164 165 -166 -168 -169 170 171 -172 -173 174 -175 176 -178 -179 180 181 -182 -184 -185 -187 -188 -189 190 -191 192 -193 194 195 -196 -197 -198 199 200 -201 -202 203 -204 -205 206 207 209 210 211 212 -213 -214 215 216 217 218 -220 -221 222 223 -224 -225 226 -227 228 229 230 231 232 -233 234 235 236 -237 238 239 -240 -241 -242 243 -245 246 -248 249 250 251 -252 -253 254 255 256 -257 258 259 260 262 263 264 -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 -371 372 -373 -374 375 376 -377 -378 -379 -380 -382 -383 384 -385 386 387 -388 -389 -390 391 -392 393 394 395 -396 397 398 399 400 -401 -402 403 -404 406 407 408 409 -410 -411 -412 413 -414 -415 -416 417 -418 419 420 421 422 423 -424 425 426 427 428 429 430 -431 432 -433 -434 -435 -436 438 439 440 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-1518661-1238302441/watcher-1518661-1238302441 -o /tmp/evaluation-result-1518661-1238302441/solver-1518661-1238302441 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518661-1238302441.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: 0.92 0.97 0.98 2/81 12394
/proc/meminfo: memFree=1785856/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=968 CPUtime=0
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 127 0 0 0 0 0 0 0 20 0 1 0 1102907950 991232 111 1992294400 134512640 135197378 4294956240 18446744073709551615 134697414 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 242 111 62 167 0 73 0

[startup+0.043283 s]
/proc/loadavg: 0.92 0.97 0.98 2/81 12394
/proc/meminfo: memFree=1785856/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1656 CPUtime=0.03
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 265 0 0 0 3 0 0 0 20 0 1 0 1102907950 1695744 248 1992294400 134512640 135197378 4294956240 18446744073709551615 134552369 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 414 248 91 167 0 245 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1656

[startup+0.101289 s]
/proc/loadavg: 0.92 0.97 0.98 2/81 12394
/proc/meminfo: memFree=1785856/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1656 CPUtime=0.09
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 275 0 0 0 9 0 0 0 18 0 1 0 1102907950 1695744 258 1992294400 134512640 135197378 4294956240 18446744073709551615 134542163 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 414 258 91 167 0 245 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1656

[startup+0.301312 s]
/proc/loadavg: 0.92 0.97 0.98 2/81 12394
/proc/meminfo: memFree=1785856/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1788 CPUtime=0.29
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 285 0 0 0 29 0 0 0 19 0 1 0 1102907950 1830912 268 1992294400 134512640 135197378 4294956240 18446744073709551615 134548473 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 447 268 91 167 0 278 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1788

[startup+0.701355 s]
/proc/loadavg: 0.92 0.97 0.98 2/81 12394
/proc/meminfo: memFree=1785856/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1788 CPUtime=0.69
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 297 0 0 0 69 0 0 0 23 0 1 0 1102907950 1830912 280 1992294400 134512640 135197378 4294956240 18446744073709551615 134572875 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 447 280 91 167 0 278 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1788

[startup+1.50144 s]
/proc/loadavg: 0.92 0.97 0.98 2/82 12395
/proc/meminfo: memFree=1784952/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1788 CPUtime=1.49
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 306 0 0 0 149 0 0 0 25 0 1 0 1102907950 1830912 289 1992294400 134512640 135197378 4294956240 18446744073709551615 134525324 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 447 289 91 167 0 278 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1788

[startup+3.10162 s]
/proc/loadavg: 0.92 0.97 0.98 2/82 12395
/proc/meminfo: memFree=1784824/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1788 CPUtime=3.09
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 314 0 0 0 309 0 0 0 25 0 1 0 1102907950 1830912 297 1992294400 134512640 135197378 4294956240 18446744073709551615 134539377 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 447 297 91 167 0 278 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1788

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

[startup+3.90171 s]
/proc/loadavg: 0.92 0.97 0.98 2/82 12395
/proc/meminfo: memFree=1784696/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1924 CPUtime=3.89
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 318 0 0 0 389 0 0 0 25 0 1 0 1102907950 1970176 301 1992294400 134512640 135197378 4294956240 18446744073709551615 134617857 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 481 301 91 167 0 312 0
Current children cumulated CPU time (s) 3.89
Current children cumulated vsize (KiB) 1924

[startup+4.30176 s]
/proc/loadavg: 0.93 0.97 0.98 2/82 12395
/proc/meminfo: memFree=1784696/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1924 CPUtime=4.3
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 318 0 0 0 430 0 0 0 25 0 1 0 1102907950 1970176 301 1992294400 134512640 135197378 4294956240 18446744073709551615 134539164 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 481 301 91 167 0 312 0
Current children cumulated CPU time (s) 4.3
Current children cumulated vsize (KiB) 1924

[startup+4.7018 s]
/proc/loadavg: 0.93 0.97 0.98 2/82 12395
/proc/meminfo: memFree=1784696/2055920 swapFree=4172708/4192956
[pid=12394] ppid=12392 vsize=1924 CPUtime=4.69
/proc/12394/stat : 12394 (march_hi) R 12392 12394 12234 0 -1 4194304 318 0 0 0 469 0 0 0 25 0 1 0 1102907950 1970176 301 1992294400 134512640 135197378 4294956240 18446744073709551615 134542050 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 481 301 91 167 0 312 0
Current children cumulated CPU time (s) 4.69
Current children cumulated vsize (KiB) 1924

Child status: 10
Real time (s): 4.76206
CPU time (s): 4.75928
CPU user time (s): 4.75528
CPU system time (s): 0.003999
CPU usage (%): 99.9416
Max. virtual memory (cumulated for all children) (KiB): 1924

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.75528
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 335
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= 1
involuntary context switches= 33

runsolver used 0.008998 second user time and 0.019996 second system time

The end

Launcher Data 

Begin job on node87 at 2009-03-29 06:54:01
IDJOB=1518661
IDBENCH=70698
IDSOLVER=521
FILE ID=node87/1518661-1238302441
PBS_JOBID= 9061019
Free space on /tmp= 66036 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S787972994-025.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518661-1238302441/watcher-1518661-1238302441 -o /tmp/evaluation-result-1518661-1238302441/solver-1518661-1238302441 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518661-1238302441.cnf

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

MD5SUM BENCH= 195829daef01dc74526b389936ef96cc
RANDOM SEED=1566580486

node87.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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1786272 kB
Buffers:         53148 kB
Cached:         132948 kB
SwapCached:       9200 kB
Active:         126452 kB
Inactive:        70248 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1786272 kB
SwapTotal:     4192956 kB
SwapFree:      4172708 kB
Dirty:             796 kB
Writeback:           0 kB
Mapped:          16244 kB
Slab:            57132 kB
Committed_AS:  2779004 kB
PageTables:       2676 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= 66036 MiB
End job on node87 at 2009-03-29 06:54:06