Trace number 198632

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 1.2 1.45552

General information on the benchmark

Namepigeons/
pigeons-40-ord.xml
MD5SUM9434b963cc349728e964ecec2fe912bc
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 benchmark0.280956
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables40
Number of constraints1560
Maximum constraint arity2
Maximum domain size39
Number of constraints which are defined in extension0
Number of constraints which are defined in intension1560
Global constraints used (with number of constraints)

Solver Data (download as text)

0.05	c # Sugar v0-40 (/tmp/evaluation/198632-1170093896/sugar-v0-40.jar)
0.05	
0.05	c # MAIN  BEGIN : /tmp/evaluation/198632-1170093896/unknown.xml [Mon Jan 29 19:04:57 2007]
0.05	c # CONVERT_XML  BEGIN : /tmp/evaluation/198632-1170093896/unknown.xml /tmp/evaluation/198632-1170093896/sugar24270.csp [Mon Jan 29 19:04:57 2007]
0.05	c # CMD : java -Xms200M -Xmx600M -jar /tmp/evaluation/198632-1170093896/sugar-v0-40.jar -convert /tmp/evaluation/198632-1170093896/unknown.xml /tmp/evaluation/198632-1170093896/sugar24270.csp
0.17	c BEGIN convert /tmp/evaluation/198632-1170093896/unknown.xml
0.60	c END convert (0.427634 seconds)
0.66	c # CONVERT_XML  END : /tmp/evaluation/198632-1170093896/sugar24270.csp 21730 bytes (0 seconds) [Mon Jan 29 19:04:57 2007]
0.66	c # CONVERT_XML  CPU : 0.01 = 0 + 0.01 + 0 + 0
0.66	
0.66	c # GENERATE_SAT  BEGIN : /tmp/evaluation/198632-1170093896/sugar24270.bcnf [Mon Jan 29 19:04:57 2007]
0.66	c # CMD : java -Xms200M -Xmx600M -jar /tmp/evaluation/198632-1170093896/sugar-v0-40.jar -bcnf -map /tmp/evaluation/198632-1170093896/sugar24270.map /tmp/evaluation/198632-1170093896/sugar24270.csp /tmp/evaluation/198632-1170093896/sugar24270.bcnf
0.77	c BEGIN parse /tmp/evaluation/198632-1170093896/sugar24270.csp
1.10	c END parse (0.322124 seconds)
1.10	c BEGIN simplify
1.13	c END simplify (0.032065 seconds)
1.13	c BEGIN encode /tmp/evaluation/198632-1170093896/sugar24270.bcnf
1.28	c END encode (0.148773 seconds)
1.32	c # GENERATE_SAT  END : 3080 variables 92740 clauses 1343784 bytes (1 seconds) [Mon Jan 29 19:04:58 2007]
1.32	c # GENERATE_SAT  CPU : 0.01 = 0.01 + 0 + 0 + 0
1.32	
1.32	c # SOLVE_SAT  BEGIN : /tmp/evaluation/198632-1170093896/sugar24270.bcnf [Mon Jan 29 19:04:58 2007]
1.32	c # CMD : /tmp/evaluation/198632-1170093896/minisat /tmp/evaluation/198632-1170093896/sugar24270.bcnf /tmp/evaluation/198632-1170093896/sugar24270.out
1.37	c ==================================[MINISAT]===================================
1.37	c | Conflicts |     ORIGINAL     |              LEARNT              | Progress |
1.37	c |           | Clauses Literals |   Limit Clauses Literals  Lit/Cl |          |
1.37	c ==============================================================================
1.37	c |         0 |   92740   243200 |   30913       0        0     nan |  0.000 % |
1.42	c |       101 |   85120   230330 |   34004      78      341     4.4 |  4.846 % |
1.44	c ==============================================================================
1.44	c restarts              : 2
1.44	c conflicts             : 174            (1540 /sec)
1.44	c decisions             : 725            (6417 /sec)
1.44	c propagations          : 100917         (893213 /sec)
1.44	c conflict literals     : 473            (13.53 % deleted)
1.44	c Memory used           : 4.52 MB
1.44	c CPU time              : 0.112982 s
1.44	c 
1.44	c UNSATISFIABLE
1.45	c # SOLVE_SAT  END : UNSATISFIABLE (0 seconds) [Mon Jan 29 19:04:58 2007]
1.45	c # SOLVE_SAT  CPU : 0.11 = 0 + 0 + 0.11 + 0
1.45	
1.45	c # RESULT : UNSATISFIABLE
1.45	
1.45	c # OUTPUT_SOL  BEGIN : UNSAT  [Mon Jan 29 19:04:58 2007]
1.45	s UNSATISFIABLE
1.45	c # OUTPUT_SOL  END :  (0 seconds) [Mon Jan 29 19:04:58 2007]
1.45	c # OUTPUT_SOL  CPU : 0 = 0 + 0 + 0 + 0
1.45	
1.45	c # MAIN  END :  (1 seconds) [Mon Jan 29 19:04:58 2007]
1.45	c # MAIN  CPU : 0.13 = 0.01 + 0.01 + 0.11 + 0
1.45

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/node14/watcher-198632-1170093896 -o ROOT/results/node14/solver-198632-1170093896 -C 1800 -M 900 /tmp/evaluation/198632-1170093896/solver /tmp/evaluation/198632-1170093896 /tmp/evaluation/198632-1170093896/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: 1.92 2.13 2.60 5/87 24271
/proc/meminfo: memFree=1825936/2055920 swapFree=4192812/4192956
[pid=24270] ppid=24268 vsize=7504 CPUtime=0
/proc/24270/stat : 24270 (sugar) R 24268 24270 23602 0 -1 4194304 315 0 0 0 0 0 0 0 20 0 1 0 29344091 7684096 51 18446744073709551615 4194304 4206940 548682069216 18446744073709551615 212231845257 0 0 4096 0 0 0 0 17 1 0 0
/proc/24270/statm: 1876 51 38 3 0 55 0

[startup+0.105003 s]
/proc/loadavg: 1.92 2.13 2.60 5/87 24271
/proc/meminfo: memFree=1825936/2055920 swapFree=4192812/4192956
[pid=24270] ppid=24268 vsize=13724 CPUtime=0.04
/proc/24270/stat : 24270 (sugar) S 24268 24270 23602 0 -1 4194304 1112 0 0 0 3 1 0 0 18 0 1 0 29344091 14053376 805 18446744073709551615 4194304 4206940 548682069216 18446744073709551615 212243361890 0 0 4224 16386 18446744071563648864 0 0 17 1 0 0
/proc/24270/statm: 3431 805 368 3 0 531 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 13724

[startup+0.513039 s]
/proc/loadavg: 1.92 2.13 2.60 5/87 24271
/proc/meminfo: memFree=1825936/2055920 swapFree=4192812/4192956
[pid=24270] ppid=24268 vsize=13724 CPUtime=0.04
/proc/24270/stat : 24270 (sugar) S 24268 24270 23602 0 -1 4194304 1121 0 0 0 3 1 0 0 15 0 1 0 29344091 14053376 805 18446744073709551615 4194304 4206940 548682069216 18446744073709551615 212243361890 0 0 4224 16386 18446744071563648864 0 0 17 1 0 0
/proc/24270/statm: 3431 805 368 3 0 531 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 13724

[startup+1.33617 s]
/proc/loadavg: 1.92 2.13 2.60 3/96 24287
/proc/meminfo: memFree=1810248/2055920 swapFree=4192812/4192956
[pid=24270] ppid=24268 vsize=14516 CPUtime=0.05
/proc/24270/stat : 24270 (sugar) S 24268 24270 23602 0 -1 4194304 1505 0 0 0 4 1 0 0 17 0 1 0 29344091 14864384 1027 18446744073709551615 4194304 4206940 548682069216 18446744073709551615 212243361890 0 0 4224 16386 18446744071563648864 0 0 17 1 0 0
/proc/24270/statm: 3629 1027 373 3 0 729 0
[pid=24272] ppid=24270 vsize=0 CPUtime=0.54
/proc/24272/stat : 24272 (java) Z 24270 24270 23602 0 -1 1036 4630 0 1 0 51 3 0 0 16 0 1 0 29344096 0 0 18446744073709551615 0 0 0 0 0 0 4 0 23759 18446744071563351923 0 0 17 1 0 0
/proc/24272/statm: 0 0 0 0 0 0 0
[pid=24280] ppid=24270 vsize=0 CPUtime=0.61
/proc/24280/stat : 24280 (java) Z 24270 24270 23602 0 -1 1036 5490 0 1 0 56 5 0 0 17 0 2 0 29344157 0 0 18446744073709551615 0 0 0 0 0 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/24280/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 1.2
Current children cumulated vsize (KiB) 14516

Child status: 0

!!! problem with CPU time !!!
wait4(...,&childrusage) returns 24270 and gives childrusage.ru_utime.tv_sec=0 childrusage.ru_utime.tv_usec=162975 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=21996
CPU time returned by wait4() is 0.184971
while last known CPU time is 1.2

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

Real time (s): 1.45552
CPU time (s): 1.2
CPU user time (s): 1.11
CPU system time (s): 0.09
CPU usage (%): 82.4448
Max. virtual memory (cumulated for all children) (KiB): 821080

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.162975
system time used= 0.021996
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2765
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= 66
involuntary context switches= 38

runsolver used 0.002999 s user time and 0.012998 s system time

The end

Launcher Data (download as text)

Begin job on node14 on Mon Jan 29 18:04:57 UTC 2007


IDJOB= 198632
IDBENCH= 3567
IDSOLVER= 86
FILE ID= node14/198632-1170093896

PBS_JOBID= 3689405

Free space on /tmp= 66546 MiB

SOLVER NAME= sugar 0.40
BENCH NAME= HOME/pub/bench/CPAI06/pigeons/pigeons-40-ord.xml
COMMAND LINE= /tmp/evaluation/198632-1170093896/solver /tmp/evaluation/198632-1170093896 /tmp/evaluation/198632-1170093896/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node14/watcher-198632-1170093896 -o ROOT/results/node14/solver-198632-1170093896 -C 1800 -M 900  /tmp/evaluation/198632-1170093896/solver /tmp/evaluation/198632-1170093896 /tmp/evaluation/198632-1170093896/unknown.xml

META MD5SUM SOLVER= 0a27e717dfe98d83d9802fe0eea45073
MD5SUM BENCH=  9434b963cc349728e964ecec2fe912bc

RANDOM SEED= 184996459

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		: 3000.216
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		: 3000.216
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:       1826416 kB
Buffers:         17528 kB
Cached:          59516 kB
SwapCached:          0 kB
Active:         157216 kB
Inactive:        25148 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1826416 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1008 kB
Writeback:           0 kB
Mapped:         124976 kB
Slab:            32116 kB
Committed_AS:   302968 kB
PageTables:       2212 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= 66546 MiB



End job on node14 on Mon Jan 29 18:04:59 UTC 2007