Trace number 298611

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 2006SAT 0.277956 0.279524

General information on the benchmark

Namerandom/OnTreshold/3SAT/v360/
unif-k3-r4.26-v360-c1533-S2109173872-19.SAT.shuffled.cnf
MD5SUMb65fe61c0cbfeaf475aa58cd1690d41f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.019996
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1533
Sum of the clauses size4599
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31533
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	
0.00/0.00	c Computed by /tmp/evaluation/298611-1171858779/kcnfs-2006   V. 1.2
0.00/0.00	c reading file ... done
0.00/0.00	c Input file : '/tmp/evaluation/298611-1171858779/instance-298611-1171858779.cnf'
0.00/0.00	c [#vars: 360, #clauses: 1533 -> 1619 clauses (pre-processing), 3-CNF]
0.00/0.00	c unit clauses propagate before processing (#clause: 1619)
0.20/0.27	c BSH-propagate until depth 1 (fix point: 6 updates) 
0.20/0.27	s SATISFIABLE
0.20/0.27	v       -1        2        3       -4       -5       -6       -7
0.20/0.27	v       -8       -9      -10      -11       13       14       15
0.20/0.27	v      -16      -17      -18       19      -20       21       22
0.20/0.27	v      -23       24       25       26       27      -28      -29
0.20/0.27	v       30      -31       32      -33       34       35      -36
0.20/0.27	v      -37       38       39      -40       41       42       43
0.20/0.27	v      -44       45       46      -47       48       49       50
0.20/0.27	v       51      -52       53      -54       55       56      -57
0.20/0.27	v      -58      -59      -60      -61      -62       63       64
0.20/0.27	v       65       66       67      -68       69       70      -71
0.20/0.27	v       72      -73      -74       75       76      -77       78
0.20/0.27	v      -79      -80      -81      -82       83       84       85
0.20/0.27	v      -86      -87       88       89      -90      -91       92
0.20/0.27	v       93      -94      -95      -96      -97      -98      -99
0.20/0.27	v     -100      101     -102     -103      104      105      106
0.20/0.27	v     -107      108     -109     -110      111     -112      113
0.20/0.27	v      114     -115      116     -117      118      119     -120
0.20/0.27	v     -121     -122      123      124      125     -126     -127
0.20/0.27	v      128     -129     -130      131      132     -133     -134
0.20/0.27	v     -135     -136      137     -138      139      140     -141
0.20/0.27	v      142      143     -144      145     -146      147      148
0.20/0.27	v      149      150      151      152     -153      154     -155
0.20/0.27	v     -156     -157     -158      159      160      161      162
0.20/0.27	v      163     -164      165      166     -167     -168     -169
0.20/0.27	v     -170     -171      172     -173     -174     -175      176
0.20/0.27	v     -177     -178     -179      180      181      182     -183
0.20/0.27	v      184     -185     -186      187     -188      189      190
0.20/0.27	v     -191      192     -193      194     -195     -196      197
0.20/0.27	v      198      199     -200     -201     -202      203      204
0.20/0.27	v     -205      206     -207     -208      209     -210      211
0.20/0.27	v      212      213      214      215      216      217     -218
0.20/0.27	v      219      220      221     -222     -223      224      225
0.20/0.27	v      226     -227      228     -229      230     -231     -232
0.20/0.27	v     -233     -234     -235      236     -237     -238      239
0.20/0.27	v     -240      241     -242     -243      244      245      246
0.20/0.27	v      247      248      249     -250      251     -252      253
0.20/0.27	v     -254      255     -256     -257      258     -259      260
0.20/0.27	v     -261      262      263     -264      265      266      267
0.20/0.27	v     -268      269      270     -271      272      273     -274
0.20/0.27	v     -275      276      277     -278      279      280      281
0.20/0.27	v     -282      283      284      285      286      287     -288
0.20/0.27	v     -289     -290     -291     -292      293     -294      295
0.20/0.27	v      296      297     -298      299      300     -301      302
0.20/0.27	v      303     -304     -305     -306      307      308      309
0.20/0.27	v      310     -311      312     -313     -314      315      316
0.20/0.27	v     -317      318      319      320      321      322      323
0.20/0.27	v     -324      325      326      327     -328      329      330
0.20/0.27	v      331     -332     -333     -334     -335      336      337
0.20/0.27	v     -338      339      340     -341      342      343     -344
0.20/0.27	v      345     -346      347      348     -349      350      351
0.20/0.27	v      352      353      354      355      356      357      358
0.20/0.27	v      359     -360        0
0.20/0.27	c Computation time     : 0.270 seconds
0.20/0.27	c Execution time       : 0.270 seconds
0.20/0.27	c Size of search tree  : 482 nodes
0.20/0.27	c average speed        : 1785.185 nodes/sec.
0.20/0.27

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/node2/watcher-298611-1171858779 -o ROOT/results/node2/solver-298611-1171858779 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/298611-1171858779/kcnfs-2006 /tmp/evaluation/298611-1171858779/instance-298611-1171858779.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: 1.04 1.01 1.00 3/77 31510
/proc/meminfo: memFree=207936/2055920 swapFree=4192812/4192956
[pid=31510] ppid=31508 vsize=181840 CPUtime=0
/proc/31510/stat : 31510 (kcnfs-2006) R 31508 31510 28811 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 205832821 186204160 116 18446744073709551615 134512640 135163436 4294956624 18446744073709551615 134717840 0 0 4096 0 0 0 0 17 1 0 0
/proc/31510/statm: 45460 116 49 158 0 45300 0

[startup+0.106389 s]
/proc/loadavg: 1.04 1.01 1.00 3/77 31510
/proc/meminfo: memFree=207936/2055920 swapFree=4192812/4192956
[pid=31510] ppid=31508 vsize=182308 CPUtime=0.1
/proc/31510/stat : 31510 (kcnfs-2006) R 31508 31510 28811 0 -1 4194304 287 0 0 0 10 0 0 0 18 0 1 0 205832821 186683392 271 18446744073709551615 134512640 135163436 4294956624 18446744073709551615 134675242 0 0 4096 0 0 0 0 17 1 0 0
/proc/31510/statm: 45577 271 75 158 0 45417 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 182308

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

[startup+0.208399 s]
/proc/loadavg: 1.04 1.01 1.00 3/77 31510
/proc/meminfo: memFree=207936/2055920 swapFree=4192812/4192956
[pid=31510] ppid=31508 vsize=182308 CPUtime=0.2
/proc/31510/stat : 31510 (kcnfs-2006) R 31508 31510 28811 0 -1 4194304 287 0 0 0 20 0 0 0 18 0 1 0 205832821 186683392 271 18446744073709551615 134512640 135163436 4294956624 18446744073709551615 134569435 0 0 4096 0 0 0 0 17 1 0 0
/proc/31510/statm: 45577 271 75 158 0 45417 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 182308

Child status: 10
Real time (s): 0.279524
CPU time (s): 0.277956
CPU user time (s): 0.276957
CPU system time (s): 0.000999
CPU usage (%): 99.439
Max. virtual memory (cumulated for all children) (KiB): 182308

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.276957
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= 298
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= 6

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node2 on Mon Feb 19 04:19:39 UTC 2007

IDJOB= 298611
IDBENCH= 19990
IDSOLVER= 113
FILE ID= node2/298611-1171858779

PBS_JOBID= 3839408

Free space on /tmp= 66549 MiB

SOLVER NAME= KCNFS 2006
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v360/unif-k3-r4.26-v360-c1533-S2109173872-19.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/298611-1171858779/kcnfs-2006 /tmp/evaluation/298611-1171858779/instance-298611-1171858779.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node2/watcher-298611-1171858779 -o ROOT/results/node2/solver-298611-1171858779 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/298611-1171858779/kcnfs-2006 /tmp/evaluation/298611-1171858779/instance-298611-1171858779.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  b65fe61c0cbfeaf475aa58cd1690d41f

RANDOM SEED= 63527093

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node2.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		: 3000.247
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		: 3000.247
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:        208408 kB
Buffers:         55204 kB
Cached:        1654112 kB
SwapCached:          0 kB
Active:        1203524 kB
Inactive:       565740 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        208408 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            3240 kB
Writeback:           0 kB
Mapped:          78824 kB
Slab:            63784 kB
Committed_AS:  1125116 kB
PageTables:       1812 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= 66549 MiB

End job on node2 on Mon Feb 19 04:19:39 UTC 2007