Trace number 426851

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
KCNFS 2004SAT 0.042992 0.0462879

General information on the benchmark

Namerandom/OnTreshold/3SAT/v400/
unif-k3-r4.26-v400-c1704-S2048803580-17.SAT.shuffled.cnf
MD5SUMfd7d232d07ea82b35604ae65ebcd0d41
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.006998
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)

0.00/0.00	
0.00/0.01	c Computed by /tmp/evaluation/426851-1177829498/kcnfs-2004   V. 03/02/12
0.00/0.01	c Input file : '/tmp/evaluation/426851-1177829498/instance-426851-1177829498.cnf' (adding resolvants)
0.00/0.04	c [400 variables, 1704 clauses, ratio 4.26, mean occ 6, 3-SAT]
0.00/0.04	s SATISFIABLE
0.00/0.04	v  -194    -5   359    32  -323
0.00/0.04	v   338   335    76   240    -2
0.00/0.04	v   148   160     7   198   282
0.00/0.04	v   350  -306   244   -45   259
0.00/0.04	v   213  -325   123  -333   -88
0.00/0.04	v  -182   375   118   303  -147
0.00/0.04	v   255   212  -274  -311  -154
0.00/0.04	v   115    67    41   238  -368
0.00/0.04	v  -179    13  -349   277  -133
0.00/0.04	v   -94   225   257  -234   -40
0.00/0.04	v  -170   309   393  -293    59
0.00/0.04	v  -219  -168   176   165   -62
0.00/0.04	v  -392   339  -106   214   -38
0.00/0.04	v  -363  -199    43  -377   224
0.00/0.04	v  -328  -347   180  -117    90
0.00/0.04	v   355   320   150   164  -136
0.00/0.04	v  -171  -104   241  -217  -278
0.00/0.04	v  -215   227  -218   258   341
0.00/0.04	v   -56   247  -312  -159    83
0.00/0.04	v  -158    42    46  -266   -23
0.00/0.04	v   236    54   298   275   254
0.00/0.04	v  -365    39   345    24  -297
0.00/0.04	v   -81   248   280  -376    74
0.00/0.04	v  -284   302  -157    21  -192
0.00/0.04	v   253    17   307   -58   287
0.00/0.04	v   193   172   391   264  -137
0.00/0.04	v  -346    98   330  -128   -70
0.00/0.04	v   262  -233   121    87   132
0.00/0.04	v   169  -289  -178  -329   108
0.00/0.04	v   195   243    61   -65   138
0.00/0.04	v  -146   143   382    44   281
0.00/0.04	v   -66   131   383  -187   183
0.00/0.04	v  -291  -380   379   336   -93
0.00/0.04	v   -60  -163  -207   386  -269
0.00/0.04	v    15  -229  -235   -64    30
0.00/0.04	v   221  -120   209  -265    69
0.00/0.04	v   151  -111   399  -358  -305
0.00/0.04	v    86  -191   237   141  -362
0.00/0.04	v  -304   -37  -389  -196   370
0.00/0.04	v    89  -371  -332  -144   -97
0.00/0.04	v   230  -388   296   226    96
0.00/0.04	v   -73   308   340  -211  -348
0.00/0.04	v   -10  -113   109   -16   220
0.00/0.04	v   -35    95   110  -369   140
0.00/0.04	v    78   114   272   189   283
0.00/0.04	v    63   103   398   279     1
0.00/0.04	v    19   327   344  -107   124
0.00/0.04	v    31   -34    27  -301  -295
0.00/0.04	v  -364   326  -352   -79   249
0.00/0.04	v  -101    72  -135  -206   343
0.00/0.04	v  -205  -190   366  -324  -130
0.00/0.04	v    84  -153   373  -315   273
0.00/0.04	v    92  -319    14    71   252
0.00/0.04	v  -181    80   100   -77  -378
0.00/0.04	v   357   -57   -26   286  -313
0.00/0.04	v  -145   400  -271  -372  -239
0.00/0.04	v   102   256  -397    33   -50
0.00/0.04	v  -354   270   318   285  -321
0.00/0.04	v    55  -337   290    91   395
0.00/0.04	v  -186   276  -381  -396  -223
0.00/0.04	v   197    82    28  -331   242
0.00/0.04	v    -3   175  -208   203  -177
0.00/0.04	v  -246   228   119  -185  -156
0.00/0.04	v   216    29  -173  -204   299
0.00/0.04	v   356  -210   334   139   385
0.00/0.04	v  -129     6    12    48  -360
0.00/0.04	v   142   174   149   342   374
0.00/0.04	v   316  -322   353   361   367
0.00/0.04	v  -384   387   390  -394   -68
0.00/0.04	v    49  -201   300    75   166
0.00/0.04	v   155    -8    -9    11    20
0.00/0.04	v    22    25    47   -52   -53
0.00/0.04	v    85   112   116   122  -126
0.00/0.04	v   127   134   152   161   162
0.00/0.04	v   167  -184   188  -202   222
0.00/0.04	v   231   245  -260   261  -267
0.00/0.04	v  -268  -288  -292   294   314
0.00/0.04	v  -317  -351    99   -36     4
0.00/0.04	v    18    51   105  -125  -200
0.00/0.04	v   232  -250   251   263   310
0.00/0.04	v     0
0.00/0.04	c Computation time    : 0.030 seconds
0.00/0.04	c Execution time      : 0.040 seconds
0.00/0.04	c Size of search tree : 38 nodes
0.00/0.04

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node24/watcher-426851-1177829498 -o ROOT/results/node24/solver-426851-1177829498 -C 5000 -W 7500 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/426851-1177829498/kcnfs-2004 /tmp/evaluation/426851-1177829498/instance-426851-1177829498.cnf 

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): 7500 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
Using a pseudo terminal to collect output from the solver
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.97 2/77 9599
/proc/meminfo: memFree=1467080/2055920 swapFree=4143384/4192956
[pid=9599] ppid=9597 vsize=15996 CPUtime=0
/proc/9599/stat : 9599 (kcnfs-2004) R 9597 9599 8906 0 -1 0 87 0 0 0 0 0 0 0 18 0 1 0 230867788 16379904 68 18446744073709551615 134512640 134953336 4294956656 18446744073709551615 134614467 0 0 4096 0 0 0 0 17 0 0 0
/proc/9599/statm: 4000 69 38 107 0 3889 0

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

Child status: 10
Real time (s): 0.0462879
CPU time (s): 0.042992
CPU user time (s): 0.039993
CPU system time (s): 0.002999
CPU usage (%): 92.8795
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.039993
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= 318
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 0.002999 second user time and 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node24 on Sun Apr 29 06:51:38 UTC 2007

IDJOB= 426851
IDBENCH= 20023
IDSOLVER= 194
FILE ID= node24/426851-1177829498

PBS_JOBID= 4718251

Free space on /tmp= 66561 MiB

SOLVER NAME= KCNFS 2004
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v400/unif-k3-r4.26-v400-c1704-S2048803580-17.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/426851-1177829498/kcnfs-2004 /tmp/evaluation/426851-1177829498/instance-426851-1177829498.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node24/watcher-426851-1177829498 -o ROOT/results/node24/solver-426851-1177829498 -C 5000 -W 7500 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/426851-1177829498/kcnfs-2004 /tmp/evaluation/426851-1177829498/instance-426851-1177829498.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  fd7d232d07ea82b35604ae65ebcd0d41

RANDOM SEED= 92997069

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node24.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		: 3000.238
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		: 3000.238
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:       1467552 kB
Buffers:         51020 kB
Cached:         445328 kB
SwapCached:      17936 kB
Active:         298220 kB
Inactive:       222184 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1467552 kB
SwapTotal:     4192956 kB
SwapFree:      4143384 kB
Dirty:            3184 kB
Writeback:           0 kB
Mapped:          30372 kB
Slab:            53456 kB
Committed_AS:  3848324 kB
PageTables:       1808 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= 66561 MiB

End job on node24 on Sun Apr 29 06:51:38 UTC 2007