Trace number 336768

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) 4.52 3.2275

General information on the benchmark

Namecrafted/Hard/contest02/
ezfact256_1.sat05-464.reshuffled-07.cnf
MD5SUM69151394f3e0e8838dc6693844061945
Bench CategoryCRAFTED (crafted 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 variables49153
Number of clauses324873
Sum of the clauses size1232169
Maximum clause length4
Minimum clause length1
Number of clauses of size 1257
Number of clauses of size 20
Number of clauses of size 366552
Number of clauses of size 4258064
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/336768-1173653454/kcnfs-smp   V. 1.2
0.00/0.00	c reading file ... done
0.69/0.77	c Input file : '/tmp/evaluation/336768-1173653454/instance-336768-1173653454.cnf'
0.69/0.77	c [#vars: 49153, #clauses: 324873 , (1-4)-CNF]
1.59/1.67	c unit clauses propagate before processing (#clause: 323841)
1.59/1.67	c estimated distribution: 8 tasks
1.69/1.79	c [PID]: 4159 4160 4161 4162 4163 4164 4165
3.27/2.89	c [PID]: 4166
3.27/2.89	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/node41/watcher-336768-1173653454 -o ROOT/results/node41/solver-336768-1173653454 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/336768-1173653454/kcnfs-smp /tmp/evaluation/336768-1173653454/instance-336768-1173653454.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: 1.00 0.99 1.00 2/64 4157
/proc/meminfo: memFree=1893552/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=180916 CPUtime=0
/proc/4157/stat : 4157 (kcnfs-smp) R 4155 4157 3027 0 -1 4194304 120 0 0 0 0 0 0 0 18 0 1 0 385301480 185257984 105 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134940183 0 0 4096 0 0 0 0 17 1 0 0
/proc/4157/statm: 45229 106 48 160 0 45067 0

[startup+0.092484 s]
/proc/loadavg: 1.00 0.99 1.00 2/64 4157
/proc/meminfo: memFree=1893552/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=185536 CPUtime=0.08
/proc/4157/stat : 4157 (kcnfs-smp) R 4155 4157 3027 0 -1 4194304 1267 0 0 0 8 0 0 0 18 0 1 0 385301480 189988864 1252 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/4157/statm: 46384 1253 48 160 0 46222 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 185536

[startup+0.101483 s]
/proc/loadavg: 1.00 0.99 1.00 2/64 4157
/proc/meminfo: memFree=1893552/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=185932 CPUtime=0.09
/proc/4157/stat : 4157 (kcnfs-smp) R 4155 4157 3027 0 -1 4194304 1385 0 0 0 8 1 0 0 18 0 1 0 385301480 190394368 1370 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/4157/statm: 46483 1370 48 160 0 46321 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 185932

[startup+0.301501 s]
/proc/loadavg: 1.00 0.99 1.00 2/64 4157
/proc/meminfo: memFree=1893552/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=196228 CPUtime=0.29
/proc/4157/stat : 4157 (kcnfs-smp) R 4155 4157 3027 0 -1 4194304 3952 0 0 0 26 3 0 0 19 0 1 0 385301480 200937472 3937 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/4157/statm: 49057 3937 48 160 0 48895 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 196228

[startup+0.701536 s]
/proc/loadavg: 1.00 0.99 1.00 2/64 4157
/proc/meminfo: memFree=1893552/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=220508 CPUtime=0.69
/proc/4157/stat : 4157 (kcnfs-smp) R 4155 4157 3027 0 -1 4194304 10034 0 0 0 62 7 0 0 22 0 1 0 385301480 225800192 10018 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/4157/statm: 55127 10020 48 160 0 54965 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 220508

[startup+1.50161 s]
/proc/loadavg: 1.00 0.99 1.00 2/65 4158
/proc/meminfo: memFree=1834024/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=240572 CPUtime=1.49
/proc/4157/stat : 4157 (kcnfs-smp) R 4155 4157 3027 0 -1 4194304 22949 0 0 0 138 11 0 0 25 0 1 0 385301480 246345728 22933 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134536138 0 0 4096 0 0 0 0 17 1 0 0
/proc/4157/statm: 60143 22933 51 160 0 59981 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 240572

[startup+3.10276 s]
/proc/loadavg: 1.00 0.99 1.00 5/68 4161
/proc/meminfo: memFree=1743760/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=240180 CPUtime=1.99
/proc/4157/stat : 4157 (kcnfs-smp) S 4155 4157 3027 0 -1 4194304 47980 0 0 0 174 25 0 0 25 0 1 0 385301480 245944320 27254 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/4157/statm: 60045 27254 67 160 0 59883 0
[pid=4159] ppid=4157 vsize=240180 CPUtime=0.69
/proc/4159/stat : 4159 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3364 0 0 0 68 1 0 0 25 0 1 0 385301659 245944320 27320 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720504 0 0 4096 2 0 0 0 17 1 0 0
/proc/4159/statm: 60045 27320 68 160 0 59883 0
[pid=4160] ppid=4157 vsize=240180 CPUtime=0.53
/proc/4160/stat : 4160 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3347 0 0 0 51 2 0 0 25 0 1 0 385301661 245944320 27326 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720438 0 0 4096 0 0 0 0 17 1 0 0
/proc/4160/statm: 60045 27326 67 160 0 59883 0
[pid=4161] ppid=4157 vsize=240180 CPUtime=0.39
/proc/4161/stat : 4161 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3329 0 0 0 37 2 0 0 25 0 1 0 385301670 245944320 27310 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572276 0 0 4096 2 0 0 0 17 0 0 0
/proc/4161/statm: 60045 27310 67 160 0 59883 0
Current children cumulated CPU time (s) 3.6
Current children cumulated vsize (KiB) 960720



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+3.20277 s]
/proc/loadavg: 1.00 0.99 1.00 9/73 4166
/proc/meminfo: memFree=1674520/2055920 swapFree=4182848/4192956
[pid=4157] ppid=4155 vsize=240180 CPUtime=1.99
/proc/4157/stat : 4157 (kcnfs-smp) S 4155 4157 3027 0 -1 4194304 47980 0 0 0 174 25 0 0 25 0 1 0 385301480 245944320 27254 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/4157/statm: 60045 27254 67 160 0 59883 0
[pid=4159] ppid=4157 vsize=240180 CPUtime=0.69
/proc/4159/stat : 4159 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3364 0 0 0 68 1 0 0 25 0 1 0 385301659 245944320 27320 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720504 0 0 4096 2 0 0 0 17 1 0 0
/proc/4159/statm: 60045 27320 68 160 0 59883 0
[pid=4160] ppid=4157 vsize=240180 CPUtime=0.55
/proc/4160/stat : 4160 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3348 0 0 0 53 2 0 0 25 0 1 0 385301661 245944320 27327 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134696907 0 0 4096 0 0 0 0 17 1 0 0
/proc/4160/statm: 60045 27327 67 160 0 59883 0
[pid=4161] ppid=4157 vsize=240180 CPUtime=0.39
/proc/4161/stat : 4161 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3329 0 0 0 37 2 0 0 25 0 1 0 385301670 245944320 27310 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572276 0 0 4096 2 0 0 0 17 0 0 0
/proc/4161/statm: 60045 27310 67 160 0 59883 0
[pid=4162] ppid=4157 vsize=240180 CPUtime=0.33
/proc/4162/stat : 4162 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3315 0 0 0 31 2 0 0 25 0 1 0 385301692 245944320 27298 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572623 0 0 4096 0 0 0 0 17 0 0 0
/proc/4162/statm: 60045 27298 67 160 0 59883 0
[pid=4163] ppid=4157 vsize=240180 CPUtime=0.23
/proc/4163/stat : 4163 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3331 0 0 0 20 3 0 0 25 0 1 0 385301722 245944320 27293 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134708962 0 0 4096 2 0 0 0 17 1 0 0
/proc/4163/statm: 60045 27293 67 160 0 59883 0
[pid=4164] ppid=4157 vsize=240180 CPUtime=0.2
/proc/4164/stat : 4164 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3304 0 0 0 18 2 0 0 25 0 1 0 385301728 245944320 27282 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720519 0 0 4096 0 0 0 0 17 0 0 0
/proc/4164/statm: 60045 27282 67 160 0 59883 0
[pid=4165] ppid=4157 vsize=240180 CPUtime=0.04
/proc/4165/stat : 4165 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3279 0 0 0 2 2 0 0 25 0 1 0 385301762 245944320 27259 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134572276 0 0 4096 2 0 0 0 17 0 0 0
/proc/4165/statm: 60045 27259 67 160 0 59883 0
[pid=4166] ppid=4157 vsize=240180 CPUtime=0.1
/proc/4166/stat : 4166 (kcnfs-smp) R 4157 4157 3027 0 -1 4194368 3285 0 0 0 8 2 0 0 25 0 1 0 385301768 245944320 27266 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720296 0 0 4096 0 0 0 0 17 1 0 0
/proc/4166/statm: 60045 27266 67 160 0 59883 0
Current children cumulated CPU time (s) 4.52
Current children cumulated vsize (KiB) 2161620

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 4157 and gives childrusage.ru_utime.tv_sec=1 childrusage.ru_utime.tv_usec=741735 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=261960
CPU time returned by wait4() is 2.0037
while last known CPU time is 4.52

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

Real time (s): 3.2275
CPU time (s): 4.52
CPU user time (s): 4.11
CPU system time (s): 0.41
CPU usage (%): 140.046
Max. virtual memory (cumulated for all children) (KiB): 2161620

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.74173
system time used= 0.26196
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 47980
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= 29

runsolver used 0.008998 second user time and 0.018997 second system time

The end

Launcher Data (download as text)

Begin job on node41 on Sun Mar 11 22:50:55 UTC 2007

IDJOB= 336768
IDBENCH= 24683
IDSOLVER= 112
FILE ID= node41/336768-1173653454

PBS_JOBID= 4101381

Free space on /tmp= 66506 MiB

SOLVER NAME= KCNFS SMP
BENCH NAME= HOME/pub/bench/SAT07/crafted/Hard/contest02/ezfact256_1.sat05-464.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/336768-1173653454/kcnfs-smp /tmp/evaluation/336768-1173653454/instance-336768-1173653454.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-336768-1173653454 -o ROOT/results/node41/solver-336768-1173653454 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/336768-1173653454/kcnfs-smp /tmp/evaluation/336768-1173653454/instance-336768-1173653454.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  69151394f3e0e8838dc6693844061945

RANDOM SEED= 193560128

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node41.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		: 3000.231
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		: 3000.231
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:       1893960 kB
Buffers:         12204 kB
Cached:         110980 kB
SwapCached:       4112 kB
Active:          58492 kB
Inactive:        75592 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1893960 kB
SwapTotal:     4192956 kB
SwapFree:      4182848 kB
Dirty:           11324 kB
Writeback:           0 kB
Mapped:          15808 kB
Slab:            13868 kB
Committed_AS:   695120 kB
PageTables:       1480 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= 66506 MiB

End job on node41 on Sun Mar 11 22:51:01 UTC 2007