Trace number 308452

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 2004UNSAT 0.32495 0.325139

General information on the benchmark

Namerandom/2+p/p0.7/v5500/
unif2p-p0.7-v5500-c14685-S1110066181-15-UNSAT.cnf
MD5SUM02ac0323b8681994481799266f6a3a32
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.172972
Satisfiable
(Un)Satisfiability was proved
Number of variables5496
Number of clauses14684
Sum of the clauses size39647
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 24405
Number of clauses of size 310279
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	
0.00/0.05	c Computed by /tmp/evaluation/308452-1172520683/kcnfs-2004   V. 03/02/12
0.00/0.05	c Input file : '/tmp/evaluation/308452-1172520683/instance-308452-1172520683.cnf'
0.30/0.32	c [5500 variables, 14684 clauses, ratio 2.67, mean occ 3, 3-SAT]
0.30/0.32	s UNSATISFIABLE
0.30/0.32	c Computation time    : 0.270 seconds
0.30/0.32	c Execution time      : 0.310 seconds
0.30/0.32	c Size of search tree : 27 nodes
0.30/0.32

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node59/watcher-308452-1172520683 -o ROOT/results/node59/solver-308452-1172520683 -C 1200 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/308452-1172520683/kcnfs-2004 /tmp/evaluation/308452-1172520683/instance-308452-1172520683.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
Using a pseudo terminal to collect output from the solver
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.72 0.93 0.98 3/64 4053
/proc/meminfo: memFree=1916848/2055920 swapFree=4183500/4192956
[pid=4053] ppid=4051 vsize=16156 CPUtime=0
/proc/4053/stat : 4053 (kcnfs-2004) R 4051 4053 2707 0 -1 0 128 0 0 0 0 0 0 0 18 0 1 0 272024995 16543744 108 18446744073709551615 134512640 134953336 4294956704 18446744073709551615 134614467 0 0 4096 0 0 0 0 17 1 0 0
/proc/4053/statm: 4040 109 38 107 0 3929 0

[startup+0.107336 s]
/proc/loadavg: 0.72 0.93 0.98 3/64 4053
/proc/meminfo: memFree=1916848/2055920 swapFree=4183500/4192956
[pid=4053] ppid=4051 vsize=20500 CPUtime=0.09
/proc/4053/stat : 4053 (kcnfs-2004) R 4051 4053 2707 0 -1 0 1595 0 0 0 9 0 0 0 18 0 1 0 272024995 20992000 1574 18446744073709551615 134512640 134953336 4294956704 18446744073709551615 134577876 0 0 4096 0 0 0 0 17 1 0 0
/proc/4053/statm: 5125 1574 59 107 0 5014 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 20500

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

[startup+0.210347 s]
/proc/loadavg: 0.72 0.93 0.98 3/64 4053
/proc/meminfo: memFree=1916848/2055920 swapFree=4183500/4192956
[pid=4053] ppid=4051 vsize=20500 CPUtime=0.2
/proc/4053/stat : 4053 (kcnfs-2004) R 4051 4053 2707 0 -1 0 1596 0 0 0 20 0 0 0 19 0 1 0 272024995 20992000 1575 18446744073709551615 134512640 134953336 4294956704 18446744073709551615 134565810 0 0 4096 0 0 0 0 17 1 0 0
/proc/4053/statm: 5125 1575 59 107 0 5014 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 20500

[startup+0.313359 s]
/proc/loadavg: 0.72 0.93 0.98 3/64 4053
/proc/meminfo: memFree=1916848/2055920 swapFree=4183500/4192956
[pid=4053] ppid=4051 vsize=20500 CPUtime=0.3
/proc/4053/stat : 4053 (kcnfs-2004) R 4051 4053 2707 0 -1 0 1596 0 0 0 30 0 0 0 20 0 1 0 272024995 20992000 1575 18446744073709551615 134512640 134953336 4294956704 18446744073709551615 134531263 0 0 4096 0 0 0 0 17 1 0 0
/proc/4053/statm: 5125 1575 59 107 0 5014 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 20500

Child status: 20
Real time (s): 0.325139
CPU time (s): 0.32495
CPU user time (s): 0.314952
CPU system time (s): 0.009998
CPU usage (%): 99.9419
Max. virtual memory (cumulated for all children) (KiB): 20500

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.314952
system time used= 0.009998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1597
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= 1

runsolver used 0.001999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node59 on Mon Feb 26 20:11:23 UTC 2007

IDJOB= 308452
IDBENCH= 20232
IDSOLVER= 114
FILE ID= node59/308452-1172520683

PBS_JOBID= 3971778

Free space on /tmp= 66559 MiB

SOLVER NAME= KCNFS 2004
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v5500/unif2p-p0.7-v5500-c14685-S1110066181-15-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/308452-1172520683/kcnfs-2004 /tmp/evaluation/308452-1172520683/instance-308452-1172520683.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node59/watcher-308452-1172520683 -o ROOT/results/node59/solver-308452-1172520683 -C 1200 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/308452-1172520683/kcnfs-2004 /tmp/evaluation/308452-1172520683/instance-308452-1172520683.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  02ac0323b8681994481799266f6a3a32

RANDOM SEED= 748103167

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node59.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		: 3000.225
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		: 3000.225
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:       1917320 kB
Buffers:         20868 kB
Cached:          76564 kB
SwapCached:       3140 kB
Active:          36448 kB
Inactive:        70620 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1917320 kB
SwapTotal:     4192956 kB
SwapFree:      4183500 kB
Dirty:            3568 kB
Writeback:           0 kB
Mapped:          15492 kB
Slab:            17532 kB
Committed_AS:   549488 kB
PageTables:       1472 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= 66559 MiB

End job on node59 on Mon Feb 26 20:11:23 UTC 2007