Trace number 296519

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 SMPSAT 2.79 1.46081

General information on the benchmark

Namerandom/OnTreshold/7SAT/v45/
unif-k7-r89-v45-c4005-S1437321789-17.SAT.shuffled.cnf
MD5SUM77bdf27dae0f4a53dc64394c48246636
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.112981
Satisfiable
(Un)Satisfiability was proved
Number of variables45
Number of clauses4005
Sum of the clauses size28035
Maximum clause length7
Minimum clause length7
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 54005

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/296519-1171824826/kcnfs-smp   V. 1.2
0.00/0.00	c reading file ... done
0.00/0.01	c Input file : '/tmp/evaluation/296519-1171824826/instance-296519-1171824826.cnf'
0.00/0.01	c [#vars: 45, #clauses: 4005, 7-CNF]
0.00/0.02	c unit clauses propagate before processing (#clause: 4005)
0.00/0.02	c estimated distribution: 8 tasks
0.00/0.02	c [PID]: 17000 17001 17002 17003 17004 17005 17006
0.02/0.44	c [PID]: 17007
0.02/0.44	c real distribution: 8 tasks
2.79/1.45	c <16998> [17001: SAT]
2.79/1.45	c <16998> [END]: 17000 17002 17003 17004 17005 17006 17007
2.79/1.46	s SATISFIABLE
2.79/1.46	v       -1        2       -3       -4       -5        6        7
2.79/1.46	v       -8        9       10       11       12       13       14
2.79/1.46	v      -15       16       17      -18      -19       20       21
2.79/1.46	v       22      -23      -24      -25       26      -27      -28
2.79/1.46	v      -29      -30       31      -32      -33      -34      -35
2.79/1.46	v      -36       37      -38      -39      -40      -41      -42
2.79/1.46	v       43       44       45        0
2.79/1.46	c CPU time            : 0.410 seconds
2.79/1.46	c Elapsed Time        : 1.445 seconds
2.79/1.46	c Size of search tree : 1543 nodes
2.79/1.46	c average speed       : 3857.500 nodes/sec.
2.79/1.46

Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node60/watcher-296519-1171824826 -o ROOT/results/node60/solver-296519-1171824826 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/296519-1171824826/kcnfs-smp /tmp/evaluation/296519-1171824826/instance-296519-1171824826.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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.91 0.98 0.99 3/64 16998
/proc/meminfo: memFree=785384/2055920 swapFree=4183416/4192956
[pid=16998] ppid=16996 vsize=180916 CPUtime=0
/proc/16998/stat : 16998 (kcnfs-smp) R 16996 16998 16830 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 202439475 185257984 113 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/16998/statm: 45229 113 48 160 0 45067 0

[startup+0.107153 s]
/proc/loadavg: 0.91 0.98 0.99 3/64 16998
/proc/meminfo: memFree=785384/2055920 swapFree=4183416/4192956
[pid=16998] ppid=16996 vsize=181968 CPUtime=0.02
/proc/16998/stat : 16998 (kcnfs-smp) R 16996 16998 16830 0 -1 4194304 670 0 0 0 2 0 0 0 23 0 1 0 202439475 186335232 506 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836899 0 0 4096 0 0 0 0 17 0 0 0
/proc/16998/statm: 45492 506 65 160 0 45330 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 181968

[startup+0.515225 s]
/proc/loadavg: 0.91 0.98 0.99 3/64 16998
/proc/meminfo: memFree=785384/2055920 swapFree=4183416/4192956
[pid=16998] ppid=16996 vsize=181968 CPUtime=0.02
/proc/16998/stat : 16998 (kcnfs-smp) S 16996 16998 16830 0 -1 4194304 740 0 0 0 2 0 0 0 23 0 1 0 202439475 186335232 506 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/16998/statm: 45492 506 65 160 0 45330 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 181968

[startup+1.33737 s]
/proc/loadavg: 0.91 0.98 0.99 9/73 17007
/proc/meminfo: memFree=781088/2055920 swapFree=4183416/4192956
[pid=16998] ppid=16996 vsize=181968 CPUtime=0.02
/proc/16998/stat : 16998 (kcnfs-smp) S 16996 16998 16830 0 -1 4194304 740 0 0 0 2 0 0 0 23 0 1 0 202439475 186335232 506 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/16998/statm: 45492 506 65 160 0 45330 0
[pid=17000] ppid=16998 vsize=181968 CPUtime=0.52
/proc/17000/stat : 17000 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 52 0 0 0 23 0 1 0 202439478 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134691559 0 0 4096 2 0 0 0 17 1 0 0
/proc/17000/statm: 45492 528 73 160 0 45330 0
[pid=17001] ppid=16998 vsize=0 CPUtime=0.4
/proc/17001/stat : 17001 (kcnfs-smp) R 16998 16998 16830 0 -1 4194372 369 0 0 0 40 0 0 0 24 0 1 0 202439478 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 0 0 0 17 1 0 0
/proc/17001/statm: 0 0 0 0 0 0 0
[pid=17002] ppid=16998 vsize=181968 CPUtime=0.39
/proc/17002/stat : 17002 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 39 0 0 0 24 0 1 0 202439480 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134577649 0 0 4096 2 0 0 0 17 0 0 0
/proc/17002/statm: 45492 528 73 160 0 45330 0
[pid=17003] ppid=16998 vsize=181968 CPUtime=0.3
/proc/17003/stat : 17003 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 30 0 0 0 24 0 1 0 202439481 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572108 0 0 4096 0 0 0 0 17 1 0 0
/proc/17003/statm: 45492 528 73 160 0 45330 0
[pid=17004] ppid=16998 vsize=181968 CPUtime=0.3
/proc/17004/stat : 17004 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 30 0 0 0 25 0 1 0 202439482 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134567399 0 0 4096 2 0 0 0 17 0 0 0
/proc/17004/statm: 45492 528 73 160 0 45330 0
[pid=17005] ppid=16998 vsize=181968 CPUtime=0.2
/proc/17005/stat : 17005 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 55 0 0 0 20 0 0 0 25 0 1 0 202439482 186335232 527 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134577686 0 0 4096 0 0 0 0 17 1 0 0
/proc/17005/statm: 45492 527 73 160 0 45330 0
[pid=17006] ppid=16998 vsize=181968 CPUtime=0.24
/proc/17006/stat : 17006 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 24 0 0 0 25 0 1 0 202439512 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134696995 0 0 4096 2 0 0 0 17 0 0 0
/proc/17006/statm: 45492 528 73 160 0 45330 0
[pid=17007] ppid=16998 vsize=181968 CPUtime=0.22
/proc/17007/stat : 17007 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 22 0 0 0 25 0 1 0 202439517 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572846 0 0 4096 0 0 0 0 17 0 0 0
/proc/17007/statm: 45492 528 73 160 0 45330 0
Current children cumulated CPU time (s) 2.59
Current children cumulated vsize (KiB) 1455744

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

[startup+1.44039 s]
/proc/loadavg: 0.91 0.98 0.99 9/73 17007
/proc/meminfo: memFree=781088/2055920 swapFree=4183416/4192956
[pid=16998] ppid=16996 vsize=181968 CPUtime=0.02
/proc/16998/stat : 16998 (kcnfs-smp) S 16996 16998 16830 0 -1 4194304 740 0 0 0 2 0 0 0 23 0 1 0 202439475 186335232 506 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/16998/statm: 45492 506 65 160 0 45330 0
[pid=17000] ppid=16998 vsize=181968 CPUtime=0.53
/proc/17000/stat : 17000 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 53 0 0 0 24 0 1 0 202439478 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134709276 0 0 4096 2 0 0 0 17 1 0 0
/proc/17000/statm: 45492 528 73 160 0 45330 0
[pid=17001] ppid=16998 vsize=0 CPUtime=0.4
/proc/17001/stat : 17001 (kcnfs-smp) R 16998 16998 16830 0 -1 4194372 369 0 0 0 40 0 0 0 24 0 1 0 202439478 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 0 0 0 17 1 0 0
/proc/17001/statm: 0 0 0 0 0 0 0
[pid=17002] ppid=16998 vsize=181968 CPUtime=0.4
/proc/17002/stat : 17002 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 40 0 0 0 25 0 1 0 202439480 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720483 0 0 4096 2 0 0 0 17 0 0 0
/proc/17002/statm: 45492 528 73 160 0 45330 0
[pid=17003] ppid=16998 vsize=181968 CPUtime=0.39
/proc/17003/stat : 17003 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 39 0 0 0 24 0 1 0 202439481 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134693602 0 0 4096 0 0 0 0 17 1 0 0
/proc/17003/statm: 45492 528 73 160 0 45330 0
[pid=17004] ppid=16998 vsize=181968 CPUtime=0.39
/proc/17004/stat : 17004 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 39 0 0 0 25 0 1 0 202439482 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720482 0 0 4096 2 0 0 0 17 0 0 0
/proc/17004/statm: 45492 528 73 160 0 45330 0
[pid=17005] ppid=16998 vsize=181968 CPUtime=0.2
/proc/17005/stat : 17005 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 55 0 0 0 20 0 0 0 25 0 1 0 202439482 186335232 527 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134577686 0 0 4096 0 0 0 0 17 1 0 0
/proc/17005/statm: 45492 527 73 160 0 45330 0
[pid=17006] ppid=16998 vsize=181968 CPUtime=0.24
/proc/17006/stat : 17006 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 24 0 0 0 25 0 1 0 202439512 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134696995 0 0 4096 2 0 0 0 17 0 0 0
/proc/17006/statm: 45492 528 73 160 0 45330 0
[pid=17007] ppid=16998 vsize=181968 CPUtime=0.22
/proc/17007/stat : 17007 (kcnfs-smp) R 16998 16998 16830 0 -1 4194368 56 0 0 0 22 0 0 0 25 0 1 0 202439517 186335232 528 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572846 0 0 4096 0 0 0 0 17 0 0 0
/proc/17007/statm: 45492 528 73 160 0 45330 0
Current children cumulated CPU time (s) 2.79
Current children cumulated vsize (KiB) 1455744

Child status: 10

!!! problem with CPU time !!!
wait4(...,&childrusage) returns 16998 and gives childrusage.ru_utime.tv_sec=0 childrusage.ru_utime.tv_usec=435933 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=6998
CPU time returned by wait4() is 0.442931
while last known CPU time is 2.79

Solver probably didn't/couldn't wait for its children
Using last known CPU time as value...

Real time (s): 1.46081
CPU time (s): 2.79
CPU user time (s): 2.79
CPU system time (s): 0
CPU usage (%): 190.99
Max. virtual memory (cumulated for all children) (KiB): 1637712

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.435933
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1433
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= 15
involuntary context switches= 25

runsolver used 0.004999 second user time and 0.007998 second system time

The end

Launcher Data (download as text)

Begin job on node60 on Sun Feb 18 18:53:46 UTC 2007

IDJOB= 296519
IDBENCH= 19939
IDSOLVER= 112
FILE ID= node60/296519-1171824826

PBS_JOBID= 3839694

Free space on /tmp= 66561 MiB

SOLVER NAME= KCNFS SMP
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/7SAT/v45/unif-k7-r89-v45-c4005-S1437321789-17.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/296519-1171824826/kcnfs-smp /tmp/evaluation/296519-1171824826/instance-296519-1171824826.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node60/watcher-296519-1171824826 -o ROOT/results/node60/solver-296519-1171824826 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/296519-1171824826/kcnfs-smp /tmp/evaluation/296519-1171824826/instance-296519-1171824826.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  77bdf27dae0f4a53dc64394c48246636

RANDOM SEED= 96548714

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node60.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		: 3000.283
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		: 3000.283
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:        785856 kB
Buffers:         48424 kB
Cached:        1100336 kB
SwapCached:       3908 kB
Active:         789768 kB
Inactive:       368896 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        785856 kB
SwapTotal:     4192956 kB
SwapFree:      4183416 kB
Dirty:            3404 kB
Writeback:           0 kB
Mapped:          15332 kB
Slab:            97348 kB
Committed_AS:   682972 kB
PageTables:       1464 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 node60 on Sun Feb 18 18:53:48 UTC 2007