Trace number 3420751

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_rw 2011-03-02SAT 0.025996 0.0262189

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v450-c1917-S1097024859-001.SATISFIABLE.cnf
MD5SUM94bd96d1179fc3c253160c710014f1d5
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.003999
Satisfiable
(Un)Satisfiability was proved
Number of variables450
Number of clauses1917
Sum of the clauses size5751
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31917
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.00	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.00/0.00	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.00/0.00	c main()::
0.00/0.00	c initFormula():: searching for DIMACS p-line....
0.00/0.00	c initFormula():: the DIMACS p-line indicates a CNF of 450 variables and 1917 clauses.
0.00/0.00	c parseCNF():: parsing....
0.00/0.00	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.00	c runParser():: parsing was successful, warming up engines...
0.00/0.00	c simplify_formula():: removed 0 tautological, 11 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 448 free variables and 1906 clauses.
0.00/0.00	c using 3-SAT heuristics (occurence based diff)
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 157 duplicate clauses
0.00/0.00	c resolvent_look() :: found 84 resolvents
0.00/0.00	c main():: clause / variable ratio: ( 1990 / 450 ) = 4.42
0.00/0.00	c longest clause has size 3
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c number of free variables = 448
0.00/0.00	c dynamic_preselect_setsize :: off
0.00/0.00	c main():: all systems go!
0.00/0.00	c |----------------------------------------------------------------|
0.02/0.02	c |.00000000000000000000000000100100000000000000000$$$$$$$$$$$$$$$$|
0.02/0.02	
c |
0.02/0.02	c
0.02/0.02	c main():: nodeCount: 103
0.02/0.02	c main():: dead ends in main: 7
0.02/0.02	c main():: lookAheadCount: 7417
0.02/0.02	c main():: unitResolveCount: 1738
0.02/0.02	c main():: time=0.020000
0.02/0.02	c main():: necessary_assignments: 70
0.02/0.02	c main():: bin_sat: 0, bin_unsat 0
0.02/0.02	c main():: doublelook: #: 229, succes #: 129
0.02/0.02	c main():: doublelook: overall 3.163 of all possible doublelooks executed
0.02/0.02	c main():: doublelook: succesrate: 56.332, average DL_trigger: 39.169
0.02/0.02	c main():: SOLUTION VERIFIED :-)
0.02/0.02	s SATISFIABLE
0.02/0.02	v -1 2 3 -4 -5 -6 -7 8 9 -10 11 12 13 14 15 16 -17 -19 21 22 23 24 25 26 27 -28 29 -30 31 -32 33 34 -35 -36 37 38 -39 40 -42 -43 44 45 -46 -47 48 -49 -50 51 -52 -53 -54 -56 -57 58 -59 60 61 -62 -63 -64 -65 66 67 -68 -69 71 -72 73 74 75 76 -77 -78 -79 -81 -82 -83 84 85 -86 87 -88 89 90 -91 -92 93 -94 -95 96 -97 98 99 100 102 103 104 -105 106 -107 109 110 -111 -112 -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 -141 -142 143 144 -145 -146 147 -148 149 150 151 152 -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 -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 -254 255 256 258 -259 -260 261 -262 -263 264 -265 266 -267 -268 269 270 -271 272 273 274 -275 276 -277 -278 -279 -280 282 -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 -313 315 316 -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 -356 -357 -358 -359 -360 -361 -362 -363 364 365 366 367 -368 -369 370 371 -372 -373 -374 -375 376 377 378 379 -380 381 382 384 385 387 -388 389 -390 -391 -392 -393 394 -395 -396 397 -398 -399 -400 401 -402 -403 -404 -405 406 407 408 409 -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 -437 -439 440 -441 -442 -443 444 -446 447 -448 -449 -450 0

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 977)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3420751-1307655100/watcher-3420751-1307655100 -o /tmp/evaluation-result-3420751-1307655100/solver-3420751-1307655100 -C 5000 -W 5100 -M 15500 ./march_rw HOME/instance-3420751-1307655100.cnf 

running on 4 cores: 0,2,4,6

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): 5100 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.42 2.84 2.95 2/177 10275
/proc/meminfo: memFree=32147276/32950928 swapFree=67050640/67111528
[pid=10275] ppid=10273 vsize=6708 CPUtime=0 cores=0,2,4,6
/proc/10275/stat : 10275 (march_rw) R 10273 10275 9477 0 -1 4202496 288 0 0 0 0 0 0 0 25 0 1 0 877108727 6868992 230 33554432000 4194304 4300876 140733330328240 18446744073709551615 4256633 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/10275/statm: 1677 230 136 27 0 126 0

[startup+0.0205759 s]
/proc/loadavg: 2.42 2.84 2.95 2/177 10275
/proc/meminfo: memFree=32147276/32950928 swapFree=67050640/67111528
[pid=10275] ppid=10273 vsize=7456 CPUtime=0.02 cores=0,2,4,6
/proc/10275/stat : 10275 (march_rw) R 10273 10275 9477 0 -1 4202496 433 0 0 0 2 0 0 0 25 0 1 0 877108727 7634944 375 33554432000 4194304 4300876 140733330328240 18446744073709551615 4214565 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/10275/statm: 1864 375 168 27 0 313 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 7456

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

[startup+0.0205759 s]
/proc/loadavg: 2.42 2.84 2.95 2/177 10275
/proc/meminfo: memFree=32147276/32950928 swapFree=67050640/67111528
[pid=10275] ppid=10273 vsize=7456 CPUtime=0.02 cores=0,2,4,6
/proc/10275/stat : 10275 (march_rw) R 10273 10275 9477 0 -1 4202496 433 0 0 0 2 0 0 0 25 0 1 0 877108727 7634944 375 33554432000 4194304 4300876 140733330328240 18446744073709551615 4214565 0 0 4096 0 0 0 0 17 2 0 0 0
/proc/10275/statm: 1864 375 168 27 0 313 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 7456

Child status: 10
Real time (s): 0.0262189
CPU time (s): 0.025996
CPU user time (s): 0.025996
CPU system time (s): 0
CPU usage (%): 99.1498
Max. virtual memory (cumulated for all children) (KiB): 7456

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.025996
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= 443
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= 1

runsolver used 0.000999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node126 at 2011-06-09 23:31:40
IDJOB=3420751
IDBENCH=83003
IDSOLVER=1913
FILE ID=node126/3420751-1307655100
RUNJOBID= node126-1307655062-10208
PBS_JOBID= 13549406
Free space on /tmp= 74148 MiB

SOLVER NAME= march_rw 2011-03-02
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v450-c1917-S1097024859-001.SATISFIABLE.cnf
COMMAND LINE= ./march_rw BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3420751-1307655100/watcher-3420751-1307655100 -o /tmp/evaluation-result-3420751-1307655100/solver-3420751-1307655100 -C 5000 -W 5100 -M 15500  ./march_rw HOME/instance-3420751-1307655100.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 94bd96d1179fc3c253160c710014f1d5
RANDOM SEED=1423885578

node126.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.56
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.80
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.783
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      32147432 kB
Buffers:        202916 kB
Cached:         382772 kB
SwapCached:      14856 kB
Active:         320544 kB
Inactive:       287444 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      32147432 kB
SwapTotal:    67111528 kB
SwapFree:     67050640 kB
Dirty:              28 kB
Writeback:           0 kB
AnonPages:       19824 kB
Mapped:           9444 kB
Slab:           131432 kB
PageTables:       4724 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   210568 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 74148 MiB
End job on node126 at 2011-06-09 23:31:40