Trace number 330000

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 SMP? (MO) 8.86 5.43313

General information on the benchmark

Nameindustrial/IBM_FV_2002_31_1_rule_1/
SAT_dat.k75.cnf
MD5SUMb66acf4b5dd67635615f55e419d4cf82
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables111705
Number of clauses500248
Sum of the clauses size1287414
Maximum clause length20
Minimum clause length1
Number of clauses of size 1703
Number of clauses of size 2389626
Number of clauses of size 354937
Number of clauses of size 422450
Number of clauses of size 59744
Number of clauses of size over 522788

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/330000-1173154489/kcnfs-smp   V. 1.2
0.00/0.00	c reading file ... done
0.99/1.06	c Input file : '/tmp/evaluation/330000-1173154489/instance-330000-1173154489.cnf'
0.99/1.06	c [#vars: 111705, #clauses: 500248 , (1-18)-CNF]
1.39/1.48	c unit clauses propagate before processing (#clause: 406000)
1.39/1.48	c estimated distribution: 8 tasks
1.79/1.82	c [PID]: 15825 15826 15827 15828 15829 15830 15831
7.66/4.85	c [PID]: 15832
7.66/4.86	c real distribution: 8 tasks

Verifier Data (download as text)

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

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node6/watcher-330000-1173154489 -o ROOT/results/node6/solver-330000-1173154489 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/330000-1173154489/kcnfs-smp /tmp/evaluation/330000-1173154489/instance-330000-1173154489.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: 0.96 1.03 0.99 3/77 15823
/proc/meminfo: memFree=1770848/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=180784 CPUtime=0
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 66 0 0 0 0 0 0 0 18 0 1 0 335403715 185122816 51 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134841789 0 0 4096 0 0 0 0 17 1 0 0
/proc/15823/statm: 45196 51 43 160 0 45034 0

[startup+0.098694 s]
/proc/loadavg: 0.96 1.03 0.99 3/77 15823
/proc/meminfo: memFree=1770848/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=180784 CPUtime=0.09
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 66 0 0 0 9 0 0 0 18 0 1 0 335403715 185122816 51 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134841789 0 0 4096 0 0 0 0 17 1 0 0
/proc/15823/statm: 45196 51 43 160 0 45034 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 180784

[startup+0.102694 s]
/proc/loadavg: 0.96 1.03 0.99 3/77 15823
/proc/meminfo: memFree=1770848/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=180784 CPUtime=0.1
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 66 0 0 0 10 0 0 0 18 0 1 0 335403715 185122816 51 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134841789 0 0 4096 0 0 0 0 17 1 0 0
/proc/15823/statm: 45196 51 43 160 0 45034 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 180784

[startup+0.301733 s]
/proc/loadavg: 0.96 1.03 0.99 3/77 15823
/proc/meminfo: memFree=1770848/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=186988 CPUtime=0.29
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 1628 0 0 0 28 1 0 0 19 0 1 0 335403715 191475712 1613 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/15823/statm: 46747 1613 48 160 0 46585 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 186988

[startup+0.701812 s]
/proc/loadavg: 0.96 1.03 0.99 3/77 15823
/proc/meminfo: memFree=1770848/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=207976 CPUtime=0.69
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 6889 0 0 0 66 3 0 0 22 0 1 0 335403715 212967424 6874 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/15823/statm: 51994 6875 48 160 0 51832 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 207976

[startup+1.50197 s]
/proc/loadavg: 0.96 1.03 0.99 2/78 15824
/proc/meminfo: memFree=1720952/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=248364 CPUtime=1.49
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 31510 0 0 0 138 11 0 0 25 0 1 0 335403715 254324736 31275 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134717065 0 0 4096 0 0 0 0 17 1 0 0
/proc/15823/statm: 62091 31277 59 160 0 61929 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 248364

[startup+3.1013 s]
/proc/loadavg: 0.96 1.03 0.99 4/80 15826
/proc/meminfo: memFree=1562856/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=248364 CPUtime=2.27
/proc/15823/stat : 15823 (kcnfs-smp) R 15821 15823 14562 0 -1 4194304 62342 0 0 0 196 31 0 0 25 0 1 0 335403715 254324736 39799 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720438 0 0 4096 0 0 0 0 17 0 0 0
/proc/15823/statm: 62091 39799 66 160 0 61929 0
[pid=15825] ppid=15823 vsize=248364 CPUtime=0.97
/proc/15825/stat : 15825 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 6049 0 0 0 95 2 0 0 25 0 1 0 335403896 254324736 39808 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720583 0 0 4096 2 0 0 0 17 1 0 0
/proc/15825/statm: 62091 39808 66 160 0 61929 0
[pid=15826] ppid=15823 vsize=248364 CPUtime=0.62
/proc/15826/stat : 15826 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 6011 0 0 0 58 4 0 0 25 0 1 0 335403905 254324736 39796 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720328 0 0 4096 0 0 0 0 17 1 0 0
/proc/15826/statm: 62091 39796 66 160 0 61929 0
Current children cumulated CPU time (s) 3.86
Current children cumulated vsize (KiB) 745092



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+5.40176 s]
/proc/loadavg: 1.21 1.08 1.01 9/86 15832
/proc/meminfo: memFree=1413624/2055924 swapFree=4156956/4192956
[pid=15823] ppid=15821 vsize=248364 CPUtime=2.78
/proc/15823/stat : 15823 (kcnfs-smp) S 15821 15823 14562 0 -1 4194304 78692 0 0 0 232 46 0 0 25 0 1 0 335403715 254324736 39801 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15823/statm: 62091 39801 66 160 0 61929 0
[pid=15825] ppid=15823 vsize=248364 CPUtime=1.73
/proc/15825/stat : 15825 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 6140 0 0 0 171 2 0 0 25 0 1 0 335403896 254324736 39824 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134567202 0 0 4096 2 0 0 0 17 1 0 0
/proc/15825/statm: 62091 39824 66 160 0 61929 0
[pid=15826] ppid=15823 vsize=248364 CPUtime=1.41
/proc/15826/stat : 15826 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 6095 0 0 0 137 4 0 0 25 0 1 0 335403905 254324736 39819 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572315 0 0 4096 0 0 0 0 17 1 0 0
/proc/15826/statm: 62091 39819 66 160 0 61929 0
[pid=15827] ppid=15823 vsize=248364 CPUtime=0.92
/proc/15827/stat : 15827 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 6046 0 0 0 89 3 0 0 25 0 1 0 335403945 254324736 39802 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720532 0 0 4096 2 0 0 0 17 0 0 0
/proc/15827/statm: 62091 39802 66 160 0 61929 0
[pid=15828] ppid=15823 vsize=248364 CPUtime=0.85
/proc/15828/stat : 15828 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 6049 0 0 0 81 4 0 0 25 0 1 0 335403977 254324736 39801 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 0 0 0 0 17 1 0 0
/proc/15828/statm: 62091 39801 66 160 0 61929 0
[pid=15829] ppid=15823 vsize=248364 CPUtime=0.52
/proc/15829/stat : 15829 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 5987 0 0 0 49 3 0 0 25 0 1 0 335404065 254324736 39814 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720338 0 0 4096 2 0 0 0 17 0 0 0
/proc/15829/statm: 62091 39814 66 160 0 61929 0
[pid=15830] ppid=15823 vsize=248364 CPUtime=0.41
/proc/15830/stat : 15830 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 5971 0 0 0 37 4 0 0 25 0 1 0 335404097 254324736 39809 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 0 0 0 0 17 0 0 0
/proc/15830/statm: 62091 39809 66 160 0 61929 0
[pid=15831] ppid=15823 vsize=248364 CPUtime=0.14
/proc/15831/stat : 15831 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 5962 0 0 0 12 2 0 0 25 0 1 0 335404177 254324736 39803 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720408 0 0 4096 2 0 0 0 17 0 0 0
/proc/15831/statm: 62091 39803 66 160 0 61929 0
[pid=15832] ppid=15823 vsize=248364 CPUtime=0.1
/proc/15832/stat : 15832 (kcnfs-smp) R 15823 15823 14562 0 -1 4194368 5924 0 0 0 5 5 0 0 25 0 1 0 335404199 254324736 39801 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720583 0 0 4096 0 0 0 0 17 1 0 0
/proc/15832/statm: 62091 39801 66 160 0 61929 0
Current children cumulated CPU time (s) 8.86
Current children cumulated vsize (KiB) 2235276

Sending SIGTERM to process tree (bottom up)
Sleeping 2 seconds

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

Child ended because it received signal 15 (SIGTERM)

!!! problem with CPU time !!!
wait4(...,&childrusage) returns 15823 and gives childrusage.ru_utime.tv_sec=2 childrusage.ru_utime.tv_usec=321647 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=474927
CPU time returned by wait4() is 2.79657
while last known CPU time is 8.86

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

Real time (s): 5.43313
CPU time (s): 8.86
CPU user time (s): 8.13
CPU system time (s): 0.73
CPU usage (%): 163.073
Max. virtual memory (cumulated for all children) (KiB): 2235276

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.32165
system time used= 0.474927
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 78692
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= 9
involuntary context switches= 62

runsolver used 0.011998 second user time and 0.024996 second system time

The end

Launcher Data (download as text)

Begin job on node6 on Tue Mar  6 04:14:50 UTC 2007

IDJOB= 330000
IDBENCH= 20553
IDSOLVER= 112
FILE ID= node6/330000-1173154489

PBS_JOBID= 4014994

Free space on /tmp= 66411 MiB

SOLVER NAME= KCNFS SMP
BENCH NAME= HOME/pub/bench/SAT07/industrial/IBM_FV_2002_31_1_rule_1/SAT_dat.k75.cnf
COMMAND LINE= /tmp/evaluation/330000-1173154489/kcnfs-smp /tmp/evaluation/330000-1173154489/instance-330000-1173154489.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node6/watcher-330000-1173154489 -o ROOT/results/node6/solver-330000-1173154489 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/330000-1173154489/kcnfs-smp /tmp/evaluation/330000-1173154489/instance-330000-1173154489.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  b66acf4b5dd67635615f55e419d4cf82

RANDOM SEED= 538766458

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node6.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		: 3000.277
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		: 3000.277
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:      2055924 kB
MemFree:       1771224 kB
Buffers:         32888 kB
Cached:         172052 kB
SwapCached:       2120 kB
Active:          95484 kB
Inactive:       134160 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1771224 kB
SwapTotal:     4192956 kB
SwapFree:      4156956 kB
Dirty:           14684 kB
Writeback:           0 kB
Mapped:          32764 kB
Slab:            40612 kB
Committed_AS:  1244684 kB
PageTables:       1748 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= 66411 MiB

End job on node6 on Tue Mar  6 04:14:57 UTC 2007