Trace number 1523901

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
Hybrid2 2009-03-22SAT 0.490924 0.491669

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 

0.39/0.49	c try 1 flip j 479940
0.39/0.49	c A solution is found
0.39/0.49	s SATISFIABLE
0.39/0.49	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 -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 -436 437 438 439 440 
0.39/0.49	v 0 
0.39/0.49	c Done (mycputime is 0.490 seconds)

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-1523901-1238583608/watcher-1523901-1238583608 -o /tmp/evaluation-result-1523901-1238583608/solver-1523901-1238583608 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523901-1238583608.cnf 1745866145 

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: 1.99 1.86 1.56 2/73 23035
/proc/meminfo: memFree=1523608/2055920 swapFree=4175504/4192956
[pid=23035] ppid=23033 vsize=451072 CPUtime=0
/proc/23035/stat : 23035 (Hybrid2) R 23033 23035 22937 0 -1 4194304 138 0 0 0 0 0 0 0 20 0 1 0 1131025301 461897728 122 1992294400 134512640 135106774 4294956208 18446744073709551615 134524000 0 0 4096 0 0 0 0 17 1 0 0
/proc/23035/statm: 112768 122 53 145 0 111644 0

[startup+0.0520391 s]
/proc/loadavg: 1.99 1.86 1.56 2/73 23035
/proc/meminfo: memFree=1523608/2055920 swapFree=4175504/4192956
[pid=23035] ppid=23033 vsize=454972 CPUtime=0.04
/proc/23035/stat : 23035 (Hybrid2) R 23033 23035 22937 0 -1 4194304 188 0 0 0 4 0 0 0 20 0 1 0 1131025301 465891328 172 1992294400 134512640 135106774 4294956208 18446744073709551615 134528310 0 0 4096 0 0 0 0 17 1 0 0
/proc/23035/statm: 113743 172 56 145 0 112619 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 454972

[startup+0.101043 s]
/proc/loadavg: 1.99 1.86 1.56 2/73 23035
/proc/meminfo: memFree=1523608/2055920 swapFree=4175504/4192956
[pid=23035] ppid=23033 vsize=454972 CPUtime=0.09
/proc/23035/stat : 23035 (Hybrid2) R 23033 23035 22937 0 -1 4194304 188 0 0 0 9 0 0 0 20 0 1 0 1131025301 465891328 172 1992294400 134512640 135106774 4294956208 18446744073709551615 134527367 0 0 4096 0 0 0 0 17 1 0 0
/proc/23035/statm: 113743 172 56 145 0 112619 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 454972

[startup+0.301065 s]
/proc/loadavg: 1.99 1.86 1.56 2/73 23035
/proc/meminfo: memFree=1523608/2055920 swapFree=4175504/4192956
[pid=23035] ppid=23033 vsize=454972 CPUtime=0.29
/proc/23035/stat : 23035 (Hybrid2) R 23033 23035 22937 0 -1 4194304 188 0 0 0 29 0 0 0 22 0 1 0 1131025301 465891328 172 1992294400 134512640 135106774 4294956208 18446744073709551615 134518112 0 0 4096 0 0 0 0 17 1 0 0
/proc/23035/statm: 113743 172 56 145 0 112619 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 454972

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

[startup+0.401077 s]
/proc/loadavg: 1.99 1.86 1.56 2/73 23035
/proc/meminfo: memFree=1523608/2055920 swapFree=4175504/4192956
[pid=23035] ppid=23033 vsize=454972 CPUtime=0.39
/proc/23035/stat : 23035 (Hybrid2) R 23033 23035 22937 0 -1 4194304 188 0 0 0 39 0 0 0 23 0 1 0 1131025301 465891328 172 1992294400 134512640 135106774 4294956208 18446744073709551615 134526785 0 0 4096 0 0 0 0 17 1 0 0
/proc/23035/statm: 113743 172 56 145 0 112619 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 454972

Child status: 10
Real time (s): 0.491669
CPU time (s): 0.490924
CPU user time (s): 0.489925
CPU system time (s): 0.000999
CPU usage (%): 99.8485
Max. virtual memory (cumulated for all children) (KiB): 454972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.489925
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 206
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 0.005999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node77 at 2009-04-01 13:00:08
IDJOB=1523901
IDBENCH=70698
IDSOLVER=530
FILE ID=node77/1523901-1238583608
PBS_JOBID= 9062229
Free space on /tmp= 66552 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/440/unif-k3-r4.25-v440-c1870-S787972994-025.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523901-1238583608/watcher-1523901-1238583608 -o /tmp/evaluation-result-1523901-1238583608/solver-1523901-1238583608 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523901-1238583608.cnf 1745866145

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

MD5SUM BENCH= 195829daef01dc74526b389936ef96cc
RANDOM SEED=1745866145

node77.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		: 3000.230
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		: 3000.230
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:       1524088 kB
Buffers:         88936 kB
Cached:         349548 kB
SwapCached:       9160 kB
Active:         219832 kB
Inactive:       231888 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1524088 kB
SwapTotal:     4192956 kB
SwapFree:      4175504 kB
Dirty:            4604 kB
Writeback:           0 kB
Mapped:          17544 kB
Slab:            65204 kB
Committed_AS:  2817112 kB
PageTables:       1984 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= 66548 MiB
End job on node77 at 2009-04-01 13:00:08