Trace number 198392

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
sugar 0.40UNSAT 0.59 1.14443

General information on the benchmark

Namepigeons/
pigeons-9.xml
MD5SUMb7eea48cb2d0ed4fbd06670a93637cec
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.080987
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables9
Number of constraints36
Maximum constraint arity2
Maximum domain size8
Number of constraints which are defined in extension0
Number of constraints which are defined in intension36
Global constraints used (with number of constraints)

Solver Data (download as text)

0.24	c # Sugar v0-40 (/tmp/evaluation/198392-1170093870/sugar-v0-40.jar)
0.24	
0.30	c # MAIN  BEGIN : /tmp/evaluation/198392-1170093870/unknown.xml [Mon Jan 29 19:04:34 2007]
0.30	c # CONVERT_XML  BEGIN : /tmp/evaluation/198392-1170093870/unknown.xml /tmp/evaluation/198392-1170093870/sugar23865.csp [Mon Jan 29 19:04:34 2007]
0.30	c # CMD : java -Xms200M -Xmx600M -jar /tmp/evaluation/198392-1170093870/sugar-v0-40.jar -convert /tmp/evaluation/198392-1170093870/unknown.xml /tmp/evaluation/198392-1170093870/sugar23865.csp
0.53	c BEGIN convert /tmp/evaluation/198392-1170093870/unknown.xml
0.71	c END convert (0.171129 seconds)
0.76	c # CONVERT_XML  END : /tmp/evaluation/198392-1170093870/sugar23865.csp 567 bytes (0 seconds) [Mon Jan 29 19:04:34 2007]
0.76	c # CONVERT_XML  CPU : 0.24 = 0 + 0 + 0.18 + 0.06
0.76	
0.76	c # GENERATE_SAT  BEGIN : /tmp/evaluation/198392-1170093870/sugar23865.bcnf [Mon Jan 29 19:04:34 2007]
0.76	c # CMD : java -Xms200M -Xmx600M -jar /tmp/evaluation/198392-1170093870/sugar-v0-40.jar -bcnf -map /tmp/evaluation/198392-1170093870/sugar23865.map /tmp/evaluation/198392-1170093870/sugar23865.csp /tmp/evaluation/198392-1170093870/sugar23865.bcnf
0.87	c BEGIN parse /tmp/evaluation/198392-1170093870/sugar23865.csp
0.93	c END parse (0.055034 seconds)
0.93	c BEGIN simplify
0.93	c END simplify (0.002404 seconds)
0.93	c BEGIN encode /tmp/evaluation/198392-1170093870/sugar23865.bcnf
0.97	c END encode (0.034644 seconds)
0.99	c # GENERATE_SAT  END : 135 variables 666 clauses 9744 bytes (0 seconds) [Mon Jan 29 19:04:34 2007]
0.99	c # GENERATE_SAT  CPU : 0 = 0 + 0 + 0 + 0
0.99	
0.99	c # SOLVE_SAT  BEGIN : /tmp/evaluation/198392-1170093870/sugar23865.bcnf [Mon Jan 29 19:04:34 2007]
0.99	c # CMD : /tmp/evaluation/198392-1170093870/minisat /tmp/evaluation/198392-1170093870/sugar23865.bcnf /tmp/evaluation/198392-1170093870/sugar23865.out
0.99	c ==================================[MINISAT]===================================
0.99	c | Conflicts |     ORIGINAL     |              LEARNT              | Progress |
0.99	c |           | Clauses Literals |   Limit Clauses Literals  Lit/Cl |          |
0.99	c ==============================================================================
0.99	c |         0 |     666     1764 |     222       0        0     nan |  0.000 % |
1.00	c |       100 |     666     1764 |     244     100      690     6.9 |  0.006 % |
1.00	c |       252 |     666     1764 |     268     252     1904     7.6 |  0.170 % |
1.00	c |       478 |     666     1764 |     295     313     2230     7.1 |  0.022 % |
1.01	c |       815 |     666     1764 |     325     319     1786     5.6 |  0.022 % |
1.01	c |      1322 |     666     1764 |     357     272     1401     5.2 |  0.011 % |
1.03	c |      2081 |     666     1764 |     393     237     1129     4.8 |  0.011 % |
1.04	c |      3220 |     667     1764 |     432     272     1349     5.0 |  0.055 % |
1.07	c |      4929 |     668     1764 |     475     344     1664     4.8 |  0.066 % |
1.11	c |      7491 |     591     1572 |     523     302     1400     4.6 |  7.429 % |
1.11	c ==============================================================================
1.11	c restarts              : 10
1.11	c conflicts             : 7578           (64230 /sec)
1.11	c decisions             : 10742          (91048 /sec)
1.11	c propagations          : 217526         (1843722 /sec)
1.11	c conflict literals     : 44729          (5.56 % deleted)
1.11	c Memory used           : 1.62 MB
1.11	c CPU time              : 0.117982 s
1.11	c 
1.11	c UNSATISFIABLE
1.11	c # SOLVE_SAT  END : UNSATISFIABLE (0 seconds) [Mon Jan 29 19:04:34 2007]
1.11	c # SOLVE_SAT  CPU : 0.12 = 0 + 0 + 0.12 + 0
1.11	
1.11	c # RESULT : UNSATISFIABLE
1.11	
1.11	c # OUTPUT_SOL  BEGIN : UNSAT  [Mon Jan 29 19:04:34 2007]
1.11	s UNSATISFIABLE
1.11	c # OUTPUT_SOL  END :  (0 seconds) [Mon Jan 29 19:04:34 2007]
1.11	c # OUTPUT_SOL  CPU : 0 = 0 + 0 + 0 + 0
1.11	
1.11	c # MAIN  END :  (0 seconds) [Mon Jan 29 19:04:34 2007]
1.11	c # MAIN  CPU : 0.36 = 0 + 0 + 0.3 + 0.06
1.11

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node7/watcher-198392-1170093870 -o ROOT/results/node7/solver-198392-1170093870 -C 1800 -M 900 /tmp/evaluation/198392-1170093870/solver /tmp/evaluation/198392-1170093870 /tmp/evaluation/198392-1170093870/unknown.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Current StackSize limit: 10240 KiB

/proc/loadavg: 3.86 3.29 2.87 5/95 23866
/proc/meminfo: memFree=16064/2055920 swapFree=4192812/4192956
[pid=23865] ppid=23863 vsize=18540 CPUtime=0
/proc/23865/stat : 23865 (runsolver) R 23863 23865 22721 0 -1 4194368 16 0 0 0 0 0 0 0 20 0 1 0 29342057 18984960 279 18446744073709551615 4194304 4267372 548682069040 18446744073709551615 244671114535 0 0 4096 24578 0 0 0 17 1 0 0
/proc/23865/statm: 4635 279 244 17 0 2626 0

[startup+0.110668 s]
/proc/loadavg: 3.86 3.29 2.87 5/95 23866
/proc/meminfo: memFree=16064/2055920 swapFree=4192812/4192956
[pid=23865] ppid=23863 vsize=8540 CPUtime=0
/proc/23865/stat : 23865 (sugar) D 23863 23865 22721 0 -1 4194304 314 0 2 0 0 0 0 0 18 0 1 0 29342057 8744960 52 18446744073709551615 4194304 4206940 548682069216 18446744073709551615 244668498692 0 0 4096 0 18446744071563479169 0 0 17 0 0 0
/proc/23865/statm: 2135 52 39 3 0 55 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8540

[startup+0.52006 s]
/proc/loadavg: 3.86 3.29 2.87 5/95 23866
/proc/meminfo: memFree=16064/2055920 swapFree=4192812/4192956
[pid=23865] ppid=23863 vsize=13724 CPUtime=0.04
/proc/23865/stat : 23865 (sugar) S 23863 23865 22721 0 -1 4194304 1109 0 3 0 3 1 0 0 18 0 1 0 29342057 14053376 805 18446744073709551615 4194304 4206940 548682069216 18446744073709551615 244680011874 0 0 4224 16386 18446744071563648864 0 0 17 0 0 0
/proc/23865/statm: 3431 805 368 3 0 531 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 13724

Child status: 0

!!! problem with CPU time !!!
wait4(...,&childrusage) returns 23865 and gives childrusage.ru_utime.tv_sec=0 childrusage.ru_utime.tv_usec=338948 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=80987
CPU time returned by wait4() is 0.419935
while last known CPU time is 0.59

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

Real time (s): 1.14443
CPU time (s): 0.59
CPU user time (s): 0.5
CPU system time (s): 0.09
CPU usage (%): 51.5542
Max. virtual memory (cumulated for all children) (KiB): 13724

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.338948
system time used= 0.080987
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4916
page faults= 35
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 325
involuntary context switches= 245

runsolver used 0.006998 s user time and 0.011998 s system time

The end

Launcher Data (download as text)

Begin job on node7 on Mon Jan 29 18:04:33 UTC 2007


IDJOB= 198392
IDBENCH= 3552
IDSOLVER= 86
FILE ID= node7/198392-1170093870

PBS_JOBID= 3689384

Free space on /tmp= 39613 MiB

SOLVER NAME= sugar 0.40
BENCH NAME= HOME/pub/bench/CPAI06/pigeons/pigeons-9.xml
COMMAND LINE= /tmp/evaluation/198392-1170093870/solver /tmp/evaluation/198392-1170093870 /tmp/evaluation/198392-1170093870/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node7/watcher-198392-1170093870 -o ROOT/results/node7/solver-198392-1170093870 -C 1800 -M 900  /tmp/evaluation/198392-1170093870/solver /tmp/evaluation/198392-1170093870 /tmp/evaluation/198392-1170093870/unknown.xml

META MD5SUM SOLVER= 0a27e717dfe98d83d9802fe0eea45073
MD5SUM BENCH=  b7eea48cb2d0ed4fbd06670a93637cec

RANDOM SEED= 959421991

TIME LIMIT= 1800 seconds

MEMORY LIMIT= 900 MiB


/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		: 3000.232
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		: 3000.232
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:         15648 kB
Buffers:          3124 kB
Cached:        1826348 kB
SwapCached:          0 kB
Active:         154852 kB
Inactive:      1797364 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:         15648 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:          829116 kB
Writeback:           0 kB
Mapped:         148328 kB
Slab:            72612 kB
Committed_AS:   462828 kB
PageTables:       2340 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= 39582 MiB



End job on node7 on Mon Jan 29 18:04:34 UTC 2007