Trace number 427032

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 0.404937 0.406325

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1240130681-11-UNSAT.cnf
MD5SUM76f071535d514b4b4cd5d986eb064c1d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.404937
Satisfiable
(Un)Satisfiability was proved
Number of variables1294
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
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/427032-1177831531/kcnfs-2004   V. 03/02/12
0.00/0.01	c Input file : '/tmp/evaluation/427032-1177831531/instance-427032-1177831531.cnf'
0.39/0.40	c [1295 variables, 4026 clauses, ratio 3.11, mean occ 4, 3-SAT]
0.39/0.40	s UNSATISFIABLE
0.39/0.40	c Computation time    : 0.390 seconds
0.39/0.40	c Execution time      : 0.400 seconds
0.39/0.40	c Size of search tree : 268 nodes
0.39/0.40

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node55/watcher-427032-1177831531 -o ROOT/results/node55/solver-427032-1177831531 -C 5000 -W 7500 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/427032-1177831531/kcnfs-2004 /tmp/evaluation/427032-1177831531/instance-427032-1177831531.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: 0.72 1.24 1.56 3/64 8741
/proc/meminfo: memFree=1380924/2055920 swapFree=4184544/4192956
[pid=8741] ppid=8739 vsize=16116 CPUtime=0
/proc/8741/stat : 8741 (kcnfs-2004) R 8739 8741 7421 0 -1 0 117 0 0 0 0 0 0 0 18 0 1 0 231063131 16502784 98 18446744073709551615 134512640 134953336 4294956656 18446744073709551615 134614467 0 0 4096 0 0 0 0 17 1 0 0
/proc/8741/statm: 4030 99 38 107 0 3919 0

[startup+0.0637291 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8741
/proc/meminfo: memFree=1380924/2055920 swapFree=4184544/4192956
[pid=8741] ppid=8739 vsize=17256 CPUtime=0.06
/proc/8741/stat : 8741 (kcnfs-2004) R 8739 8741 7421 0 -1 0 531 0 0 0 6 0 0 0 18 0 1 0 231063131 17670144 511 18446744073709551615 134512640 134953336 4294956656 18446744073709551615 134577888 0 0 4096 0 0 0 0 17 1 0 0
/proc/8741/statm: 4314 511 59 107 0 4203 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 17256

[startup+0.101731 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8741
/proc/meminfo: memFree=1380924/2055920 swapFree=4184544/4192956
[pid=8741] ppid=8739 vsize=17256 CPUtime=0.09
/proc/8741/stat : 8741 (kcnfs-2004) R 8739 8741 7421 0 -1 0 532 0 0 0 9 0 0 0 18 0 1 0 231063131 17670144 512 18446744073709551615 134512640 134953336 4294956656 18446744073709551615 134532729 0 0 4096 0 0 0 0 17 1 0 0
/proc/8741/statm: 4314 512 59 107 0 4203 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 17256

[startup+0.301749 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8741
/proc/meminfo: memFree=1380924/2055920 swapFree=4184544/4192956
[pid=8741] ppid=8739 vsize=17256 CPUtime=0.29
/proc/8741/stat : 8741 (kcnfs-2004) R 8739 8741 7421 0 -1 0 532 0 0 0 29 0 0 0 19 0 1 0 231063131 17670144 512 18446744073709551615 134512640 134953336 4294956656 18446744073709551615 134529724 0 0 4096 0 0 0 0 17 1 0 0
/proc/8741/statm: 4314 512 59 107 0 4203 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 17256

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

[startup+0.401759 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8741
/proc/meminfo: memFree=1380924/2055920 swapFree=4184544/4192956
[pid=8741] ppid=8739 vsize=17256 CPUtime=0.39
/proc/8741/stat : 8741 (kcnfs-2004) R 8739 8741 7421 0 -1 0 533 0 0 0 39 0 0 0 19 0 1 0 231063131 17670144 513 18446744073709551615 134512640 134953336 4294956656 18446744073709551615 134528302 0 0 4096 0 0 0 0 17 1 0 0
/proc/8741/statm: 4314 513 59 107 0 4203 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 17256

Child status: 20
Real time (s): 0.406325
CPU time (s): 0.404937
CPU user time (s): 0.401938
CPU system time (s): 0.002999
CPU usage (%): 99.6584
Max. virtual memory (cumulated for all children) (KiB): 17256

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.401938
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= 534
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 0.002999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node55 on Sun Apr 29 07:25:31 UTC 2007

IDJOB= 427032
IDBENCH= 20297
IDSOLVER= 194
FILE ID= node55/427032-1177831531

PBS_JOBID= 4718276

Free space on /tmp= 66561 MiB

SOLVER NAME= KCNFS 2004
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1240130681-11-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/427032-1177831531/kcnfs-2004 /tmp/evaluation/427032-1177831531/instance-427032-1177831531.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node55/watcher-427032-1177831531 -o ROOT/results/node55/solver-427032-1177831531 -C 5000 -W 7500 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/427032-1177831531/kcnfs-2004 /tmp/evaluation/427032-1177831531/instance-427032-1177831531.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  76f071535d514b4b4cd5d986eb064c1d

RANDOM SEED= 934585260

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node55.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		: 3000.216
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		: 3000.216
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:       1381332 kB
Buffers:         59636 kB
Cached:         527912 kB
SwapCached:       2556 kB
Active:         315948 kB
Inactive:       281860 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1381332 kB
SwapTotal:     4192956 kB
SwapFree:      4184544 kB
Dirty:            3388 kB
Writeback:           0 kB
Mapped:          16576 kB
Slab:            62844 kB
Committed_AS:  1392800 kB
PageTables:       1380 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 node55 on Sun Apr 29 07:25:32 UTC 2007