Trace number 313309

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 2004? 0.001999 0.00538108

General information on the benchmark

Nameindustrial/anbulagan/
medium-sat/dated-10-17-s.cnf
MD5SUM334ef674dc213d40fc569890874cc7af
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark15.1777
Satisfiable
(Un)Satisfiability was proved
Number of variables229842
Number of clauses1081178
Sum of the clauses size2501490
Maximum clause length10
Minimum clause length1
Number of clauses of size 119157
Number of clauses of size 2832850
Number of clauses of size 3186131
Number of clauses of size 44780
Number of clauses of size 519120
Number of clauses of size over 519140

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/313309-1176882476/kcnfs-2004   V. 03/02/12
0.00/0.00	c readcnf :: Number of variables cannot exceed 20000
0.00/0.00	s UNKNOWN (Rejected)
0.00/0.00	c Computation time not available !!
0.00/0.00	c Execution time not available !!
0.00/0.00	c Size of search tree : 0 node
0.00/0.00

Verifier Data (download as text)

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer: UNKNOWN

Watcher Data (download as text)

runsolver version 3.2.2 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node22/watcher-313309-1176882476 -o ROOT/results/node22/solver-313309-1176882476 -C 1200 -W 2400 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/313309-1176882476/kcnfs-2004 /tmp/evaluation/313309-1176882476/instance-313309-1176882476.cnf 

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): 2400 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: 0.93 0.98 0.99 3/77 27782
/proc/meminfo: memFree=1596720/2055920 swapFree=4168584/4192956
[pid=27782] ppid=27780 vsize=0 CPUtime=0
/proc/27782/stat : 27782 (kcnfs-2004) Z 27780 27782 27587 0 -1 12 68 0 0 0 0 0 0 0 15 0 1 0 136165257 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 18446744071563351923 0 0 17 1 0 0
/proc/27782/statm: 0 0 0 0 0 0 0

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

Child status: 0
Real time (s): 0.00538108
CPU time (s): 0.001999
CPU user time (s): 0
CPU system time (s): 0.001999
CPU usage (%): 37.1487
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 68
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= 6
involuntary context switches= 0

runsolver used 0.001999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node22 on Wed Apr 18 07:47:56 UTC 2007

IDJOB= 313309
IDBENCH= 20363
IDSOLVER= 114
FILE ID= node22/313309-1176882476

PBS_JOBID= 4595112

Free space on /tmp= 66491 MiB

SOLVER NAME= KCNFS 2004
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/medium-sat/dated-10-17-s.cnf
COMMAND LINE= /tmp/evaluation/313309-1176882476/kcnfs-2004 /tmp/evaluation/313309-1176882476/instance-313309-1176882476.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node22/watcher-313309-1176882476 -o ROOT/results/node22/solver-313309-1176882476 -C 1200 -W 2400 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/313309-1176882476/kcnfs-2004 /tmp/evaluation/313309-1176882476/instance-313309-1176882476.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  334ef674dc213d40fc569890874cc7af

RANDOM SEED= 958577220

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node22.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		: 3000.265
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		: 3000.265
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:       1597128 kB
Buffers:         35972 kB
Cached:         339328 kB
SwapCached:       2100 kB
Active:         110392 kB
Inactive:       287296 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1597128 kB
SwapTotal:     4192956 kB
SwapFree:      4168584 kB
Dirty:           22784 kB
Writeback:           0 kB
Mapped:          30256 kB
Slab:            46728 kB
Committed_AS:  1730844 kB
PageTables:       1676 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= 66491 MiB

End job on node22 on Wed Apr 18 07:47:56 UTC 2007