Trace number 1523883

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 0.266958 0.267767

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/400/
unif-k3-r4.25-v400-c1700-S1531283922-009.cnf
MD5SUMed6fcf5f29f5b190db98674f0404abc2
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.024996
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 

0.19/0.26	c try 1 flip j 232994
0.19/0.26	c A solution is found
0.19/0.26	s SATISFIABLE
0.19/0.26	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 
0.19/0.26	v 0 
0.19/0.26	c Done (mycputime is 0.260 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-1523883-1238582101/watcher-1523883-1238582101 -o /tmp/evaluation-result-1523883-1238582101/solver-1523883-1238582101 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1523883-1238582101.cnf 985403039 

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: 1.83 1.82 1.44 3/64 3929
/proc/meminfo: memFree=1534192/2055920 swapFree=4174972/4192956
[pid=3929] ppid=3927 vsize=450940 CPUtime=0
/proc/3929/stat : 3929 (Hybrid2) R 3927 3929 3287 0 -1 4194304 131 0 0 0 0 0 0 0 18 0 1 0 1130877188 461762560 115 1992294400 134512640 135106774 4294956224 18446744073709551615 134524098 0 0 4096 0 0 0 0 17 1 0 0
/proc/3929/statm: 112735 115 53 145 0 111611 0

[startup+0.089663 s]
/proc/loadavg: 1.83 1.82 1.44 3/64 3929
/proc/meminfo: memFree=1534192/2055920 swapFree=4174972/4192956
[pid=3929] ppid=3927 vsize=455000 CPUtime=0.08
/proc/3929/stat : 3929 (Hybrid2) R 3927 3929 3287 0 -1 4194304 178 0 0 0 8 0 0 0 18 0 1 0 1130877188 465920000 162 1992294400 134512640 135106774 4294956224 18446744073709551615 134526470 0 0 4096 0 0 0 0 17 1 0 0
/proc/3929/statm: 113750 162 56 145 0 112626 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 455000

[startup+0.101663 s]
/proc/loadavg: 1.83 1.82 1.44 3/64 3929
/proc/meminfo: memFree=1534192/2055920 swapFree=4174972/4192956
[pid=3929] ppid=3927 vsize=455000 CPUtime=0.09
/proc/3929/stat : 3929 (Hybrid2) R 3927 3929 3287 0 -1 4194304 178 0 0 0 9 0 0 0 18 0 1 0 1130877188 465920000 162 1992294400 134512640 135106774 4294956224 18446744073709551615 134527203 0 0 4096 0 0 0 0 17 1 0 0
/proc/3929/statm: 113750 162 56 145 0 112626 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 455000

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

[startup+0.201674 s]
/proc/loadavg: 1.83 1.82 1.44 3/64 3929
/proc/meminfo: memFree=1534192/2055920 swapFree=4174972/4192956
[pid=3929] ppid=3927 vsize=455000 CPUtime=0.19
/proc/3929/stat : 3929 (Hybrid2) R 3927 3929 3287 0 -1 4194304 178 0 0 0 19 0 0 0 18 0 1 0 1130877188 465920000 162 1992294400 134512640 135106774 4294956224 18446744073709551615 134527359 0 0 4096 0 0 0 0 17 1 0 0
/proc/3929/statm: 113750 162 56 145 0 112626 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 455000

Child status: 10
Real time (s): 0.267767
CPU time (s): 0.266958
CPU user time (s): 0.265959
CPU system time (s): 0.000999
CPU usage (%): 99.6978
Max. virtual memory (cumulated for all children) (KiB): 455000

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.265959
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= 196
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 0.002999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node7 at 2009-04-01 12:35:01
IDJOB=1523883
IDBENCH=70692
IDSOLVER=530
FILE ID=node7/1523883-1238582101
PBS_JOBID= 9070530
Free space on /tmp= 65660 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/400/unif-k3-r4.25-v400-c1700-S1531283922-009.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523883-1238582101/watcher-1523883-1238582101 -o /tmp/evaluation-result-1523883-1238582101/solver-1523883-1238582101 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1523883-1238582101.cnf 985403039

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

MD5SUM BENCH= ed6fcf5f29f5b190db98674f0404abc2
RANDOM SEED=985403039

node7.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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1534608 kB
Buffers:        100264 kB
Cached:         321352 kB
SwapCached:      11884 kB
Active:         205496 kB
Inactive:       229520 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1534608 kB
SwapTotal:     4192956 kB
SwapFree:      4174972 kB
Dirty:            4604 kB
Writeback:           0 kB
Mapped:          19080 kB
Slab:            72208 kB
Committed_AS:  3030220 kB
PageTables:       1456 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= 65656 MiB
End job on node7 at 2009-04-01 12:35:01