Trace number 313348

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 2006? (exit code) 1.79373 1.79519

General information on the benchmark

Nameindustrial/anbulagan/
medium-sat/total-10-15-s.cnf
MD5SUMc19d8230b3c2026af5f29abce0d10f19
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark41.1987
Satisfiable
(Un)Satisfiability was proved
Number of variables270120
Number of clauses1250036
Sum of the clauses size2877772
Maximum clause length10
Minimum clause length1
Number of clauses of size 122595
Number of clauses of size 2979486
Number of clauses of size 3197175
Number of clauses of size 45640
Number of clauses of size 522560
Number of clauses of size over 522580

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/313348-1176883198/kcnfs-2006   V. 1.2
0.00/0.00	c reading file ... done
1.69/1.77	c this formula cannot been solved by kcnfs
1.69/1.77

Verifier Data (download as text)

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

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node71/watcher-313348-1176883198 -o ROOT/results/node71/solver-313348-1176883198 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/313348-1176883198/kcnfs-2006 /tmp/evaluation/313348-1176883198/instance-313348-1176883198.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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.96 3/64 21414
/proc/meminfo: memFree=1577368/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=180908 CPUtime=0
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 124 0 0 0 0 0 0 0 18 0 1 0 164309126 185249792 109 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 45227 109 47 158 0 45067 0

[startup+0.0783971 s]
/proc/loadavg: 0.99 0.97 0.96 3/64 21414
/proc/meminfo: memFree=1577368/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=185132 CPUtime=0.07
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 1182 0 0 0 7 0 0 0 18 0 1 0 164309126 189575168 1168 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 46283 1168 47 158 0 46123 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 185132

[startup+0.101399 s]
/proc/loadavg: 0.99 0.97 0.96 3/64 21414
/proc/meminfo: memFree=1577368/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=186452 CPUtime=0.09
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 1512 0 0 0 9 0 0 0 18 0 1 0 164309126 190926848 1497 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134832765 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 46613 1497 47 158 0 46453 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 186452

[startup+0.301426 s]
/proc/loadavg: 0.99 0.97 0.96 3/64 21414
/proc/meminfo: memFree=1577368/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=197408 CPUtime=0.29
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 4247 0 0 0 27 2 0 0 19 0 1 0 164309126 202145792 4232 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 49352 4233 47 158 0 49192 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 197408

[startup+0.701481 s]
/proc/loadavg: 0.99 0.97 0.96 3/64 21414
/proc/meminfo: memFree=1577368/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=218792 CPUtime=0.69
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 9594 0 0 0 65 4 0 0 22 0 1 0 164309126 224043008 9579 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 54698 9579 47 158 0 54538 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 218792

[startup+1.50159 s]
/proc/loadavg: 0.99 0.97 0.96 2/65 21415
/proc/meminfo: memFree=1523152/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=262484 CPUtime=1.49
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 20505 0 0 0 138 11 0 0 25 0 1 0 164309126 268783616 20490 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 65621 20491 47 158 0 65461 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 262484

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

[startup+1.70162 s]
/proc/loadavg: 0.99 0.97 0.96 2/65 21415
/proc/meminfo: memFree=1523152/2055920 swapFree=4184232/4192956
[pid=21414] ppid=21412 vsize=272912 CPUtime=1.69
/proc/21414/stat : 21414 (kcnfs-2006) R 21412 21414 20878 0 -1 4194304 23107 0 0 0 158 11 0 0 25 0 1 0 164309126 279461888 23092 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/21414/statm: 68228 23093 47 158 0 68068 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 272912

Child status: 1
Real time (s): 1.79519
CPU time (s): 1.79373
CPU user time (s): 1.65475
CPU system time (s): 0.138978
CPU usage (%): 99.9186
Max. virtual memory (cumulated for all children) (KiB): 272912

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.65475
system time used= 0.138978
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 24136
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= 2

runsolver used 0.005999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node71 on Wed Apr 18 07:59:58 UTC 2007

IDJOB= 313348
IDBENCH= 20364
IDSOLVER= 113
FILE ID= node71/313348-1176883198

PBS_JOBID= 4595108

Free space on /tmp= 66457 MiB

SOLVER NAME= KCNFS 2006
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/medium-sat/total-10-15-s.cnf
COMMAND LINE= /tmp/evaluation/313348-1176883198/kcnfs-2006 /tmp/evaluation/313348-1176883198/instance-313348-1176883198.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node71/watcher-313348-1176883198 -o ROOT/results/node71/solver-313348-1176883198 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/313348-1176883198/kcnfs-2006 /tmp/evaluation/313348-1176883198/instance-313348-1176883198.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  c19d8230b3c2026af5f29abce0d10f19

RANDOM SEED= 442133102

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node71.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		: 3000.234
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		: 3000.234
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:       1577776 kB
Buffers:         16568 kB
Cached:         381740 kB
SwapCached:       2620 kB
Active:          71300 kB
Inactive:       336768 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1577776 kB
SwapTotal:     4192956 kB
SwapFree:      4184232 kB
Dirty:           25904 kB
Writeback:           0 kB
Mapped:          15896 kB
Slab:            56072 kB
Committed_AS:  2513740 kB
PageTables:       1448 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= 66457 MiB

End job on node71 on Wed Apr 18 08:00:00 UTC 2007