Trace number 320061

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? 0.000999 0.00518606

General information on the benchmark

Nameindustrial/grieu/
vmpc_26.cnf
MD5SUM7e9eba7a609bdbcf7c3a7e0f5c07ab04
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark15.6526
Satisfiable
(Un)Satisfiability was proved
Number of variables676
Number of clauses86424
Sum of the clauses size226590
Maximum clause length26
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 233878
Number of clauses of size 352494
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 552

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/320061-1173040403/kcnfs-2004   V. 03/02/12
0.00/0.00	c readcnf :: CLAUSE SIZE CANNOT EXCEED 15 !!
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 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node39/watcher-320061-1173040403 -o ROOT/results/node39/solver-320061-1173040403 -C 1200 -W 2400 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/320061-1173040403/kcnfs-2004 /tmp/evaluation/320061-1173040403/instance-320061-1173040403.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: 0.84 0.94 0.90 3/64 13795
/proc/meminfo: memFree=1414408/2055920 swapFree=4184064/4192956
[pid=13795] ppid=13793 vsize=0 CPUtime=0
/proc/13795/stat : 13795 (kcnfs-2004) Z 13793 13795 12416 0 -1 12 68 0 0 0 0 0 0 0 15 0 1 0 323996169 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 18446744071563351923 0 0 17 1 0 0
/proc/13795/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): 0.00518606
CPU time (s): 0.000999
CPU user time (s): 0.000999
CPU system time (s): 0
CPU usage (%): 19.2632
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.000999
system time used= 0
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 0.002999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node39 on Sun Mar  4 20:33:23 UTC 2007

IDJOB= 320061
IDBENCH= 20494
IDSOLVER= 114
FILE ID= node39/320061-1173040403

PBS_JOBID= 4012458

Free space on /tmp= 66541 MiB

SOLVER NAME= KCNFS 2004
BENCH NAME= HOME/pub/bench/SAT07/industrial/grieu/vmpc_26.cnf
COMMAND LINE= /tmp/evaluation/320061-1173040403/kcnfs-2004 /tmp/evaluation/320061-1173040403/instance-320061-1173040403.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node39/watcher-320061-1173040403 -o ROOT/results/node39/solver-320061-1173040403 -C 1200 -W 2400 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/320061-1173040403/kcnfs-2004 /tmp/evaluation/320061-1173040403/instance-320061-1173040403.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  7e9eba7a609bdbcf7c3a7e0f5c07ab04

RANDOM SEED= 810070631

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node39.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		: 3000.285
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		: 3000.285
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:       1414824 kB
Buffers:         38620 kB
Cached:         528564 kB
SwapCached:       2928 kB
Active:         191112 kB
Inactive:       389016 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1414824 kB
SwapTotal:     4192956 kB
SwapFree:      4184064 kB
Dirty:            4348 kB
Writeback:           0 kB
Mapped:          18920 kB
Slab:            46984 kB
Committed_AS:   755668 kB
PageTables:       1420 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= 66541 MiB

End job on node39 on Sun Mar  4 20:33:23 UTC 2007