Trace number 299720

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, and are wall clock time (not CPU 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
Hybrid1 2007-02-08SAT 0.339947 0.34096

General information on the benchmark

Namerandom/OnTreshold/3SAT/v400/
unif-k3-r4.26-v400-c1704-S1752604460-10.SAT.shuffled.cnf
MD5SUM26af42426194a43df413cae8f2aea334
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.05599
Satisfiable
(Un)Satisfiability was proved
Number of variables400
Number of clauses1704
Sum of the clauses size5112
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31704
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.30/0.33	c try 1 flip j 263562
0.30/0.33	c A solution is found
0.30/0.33	s SATISFIABLE
0.30/0.33	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 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 -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 91 -92 93 94 95 96 97 98 -99 -100 101 -102 103 104 -105 -106 -107 108 109 110 111 -112 113 114 -115 -116 117 118 -119 -120 121 122 -123 124 -125 -126 -127 -128 -129 -130 131 132 -133 134 -135 -136 137 -138 -139 140 141 -142 -143 -144 145 146 -147 148 149 -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 -176 177 178 179 180 -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 -219 220 221 222 223 -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 -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 -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 
0.30/0.33	v 0 
0.30/0.33	c Done (mycputime is 0.000 seconds)

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node75/watcher-299720-1171876690 -o ROOT/results/node75/solver-299720-1171876690 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/299720-1171876690/Hybrid1 /tmp/evaluation/299720-1171876690/instance-299720-1171876690.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 1.69 1.20 1.07 3/64 26707
/proc/meminfo: memFree=704032/2055920 swapFree=4183176/4192956
[pid=26707] ppid=26705 vsize=244716 CPUtime=0
/proc/26707/stat : 26707 (Hybrid1) R 26705 26707 25555 0 -1 4194304 119 0 0 0 0 0 0 0 20 0 1 0 207634877 250589184 102 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134523570 0 0 4096 0 0 0 0 17 1 0 0
/proc/26707/statm: 61179 102 40 103 0 60683 0

[startup+0.106976 s]
/proc/loadavg: 1.69 1.20 1.07 3/64 26707
/proc/meminfo: memFree=704032/2055920 swapFree=4183176/4192956
[pid=26707] ppid=26705 vsize=246428 CPUtime=0.1
/proc/26707/stat : 26707 (Hybrid1) R 26705 26707 25555 0 -1 4194304 185 0 0 0 10 0 0 0 21 0 1 0 207634877 252342272 165 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134544951 0 0 4096 0 0 0 0 17 1 0 0
/proc/26707/statm: 61607 165 44 103 0 61111 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 246428

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

[startup+0.208988 s]
/proc/loadavg: 1.69 1.20 1.07 3/64 26707
/proc/meminfo: memFree=704032/2055920 swapFree=4183176/4192956
[pid=26707] ppid=26705 vsize=246428 CPUtime=0.2
/proc/26707/stat : 26707 (Hybrid1) R 26705 26707 25555 0 -1 4194304 185 0 0 0 20 0 0 0 21 0 1 0 207634877 252342272 165 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134553845 0 0 4096 0 0 0 0 17 1 0 0
/proc/26707/statm: 61607 165 44 103 0 61111 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 246428

[startup+0.311 s]
/proc/loadavg: 1.69 1.20 1.07 3/64 26707
/proc/meminfo: memFree=704032/2055920 swapFree=4183176/4192956
[pid=26707] ppid=26705 vsize=246428 CPUtime=0.3
/proc/26707/stat : 26707 (Hybrid1) R 26705 26707 25555 0 -1 4194304 185 0 0 0 30 0 0 0 22 0 1 0 207634877 252342272 165 18446744073709551615 134512640 134935932 4294956704 18446744073709551615 134545007 0 0 4096 0 0 0 0 17 1 0 0
/proc/26707/statm: 61607 165 44 103 0 61111 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 246428

Child status: 10
Real time (s): 0.34096
CPU time (s): 0.339947
CPU user time (s): 0.336948
CPU system time (s): 0.002999
CPU usage (%): 99.7029
Max. virtual memory (cumulated for all children) (KiB): 246428

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.336948
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 198
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= 8
involuntary context switches= 0

runsolver used 0.001999 second user time and 0.004999 second system time

The end

Launcher Data (download as text)

Begin job on node75 on Mon Feb 19 09:18:10 UTC 2007

IDJOB= 299720
IDBENCH= 20017
IDSOLVER= 115
FILE ID= node75/299720-1171876690

PBS_JOBID= 3839767

Free space on /tmp= 66557 MiB

SOLVER NAME= Hybrid1 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v400/unif-k3-r4.26-v400-c1704-S1752604460-10.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/299720-1171876690/Hybrid1 /tmp/evaluation/299720-1171876690/instance-299720-1171876690.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node75/watcher-299720-1171876690 -o ROOT/results/node75/solver-299720-1171876690 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/299720-1171876690/Hybrid1 /tmp/evaluation/299720-1171876690/instance-299720-1171876690.cnf            

META MD5SUM SOLVER= 4ad8950502569bcbd9dc3ae819b6eefe
MD5SUM BENCH=  26af42426194a43df413cae8f2aea334

RANDOM SEED= 495550662

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node75.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.218
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		: 3000.218
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:        704512 kB
Buffers:         51476 kB
Cached:        1176968 kB
SwapCached:       3920 kB
Active:         827560 kB
Inactive:       410716 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        704512 kB
SwapTotal:     4192956 kB
SwapFree:      4183176 kB
Dirty:            6280 kB
Writeback:           0 kB
Mapped:          15692 kB
Slab:            99088 kB
Committed_AS:   632504 kB
PageTables:       1432 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= 66557 MiB

End job on node75 on Mon Feb 19 09:18:11 UTC 2007