Trace number 247393

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
Mistral 2006-12-04? (exit code) 0.397939 0.409289

General information on the benchmark

Namerandom/rand-8-20-5/
rand-8-20-5-18-800-13_ext.xml
MD5SUMa5445ab70379ee1065ebabe08628ea31
Bench CategoryN-ARY-EXT (n-ary constraints in extension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark54.6227
SatisfiableYES
(Un)Satisfiability was proved
Number of variables20
Number of constraints18
Maximum constraint arity8
Maximum domain size5
Number of constraints which are defined in extension18
Number of constraints which are defined in intension0
Global constraints used (with number of constraints)

Solver Data (download as text)

0.20	c 
0.20	c Parsing xml file
0.20	c 	domains...............    0
0.20	c 	variables.............    0
0.20	c 	relations...
0.40		Unexpected exception :
0.40		last tuple is incomplete !

Verifier Data (download as text)

ERROR: Unexpected answer ! (SAT/UNSAT expected)
Got answer:

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node15/watcher-247393-1168392228 -o ROOT/results/node15/solver-247393-1168392228 -C 1800 -M 900 /tmp/evaluation/247393-1168392228/mistral/bin/solver /tmp/evaluation/247393-1168392228/unknown.xml -v 1 

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: 2.04 2.03 2.00 2/97 17393
/proc/meminfo: memFree=1481256/2055920 swapFree=4174172/4192956
[pid=17392] ppid=17390 vsize=540 CPUtime=0
/proc/17392/stat : 17392 (solver) R 17390 17392 16467 0 -1 4194304 41 0 0 0 0 0 0 0 19 0 1 0 187617749 552960 26 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 7512868 0 2147483391 4096 0 0 0 0 17 1 0 0
/proc/17392/statm: 135 26 21 92 0 18 0

[startup+0.102094 s]
/proc/loadavg: 2.04 2.03 2.00 2/97 17393
/proc/meminfo: memFree=1481256/2055920 swapFree=4174172/4192956
[pid=17392] ppid=17390 vsize=12532 CPUtime=0.08
/proc/17392/stat : 17392 (solver) R 17390 17392 16467 0 -1 4194304 3145 0 0 0 8 0 0 0 18 0 1 0 187617749 12832768 2178 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 8001974 0 0 4096 0 0 0 0 17 1 0 0
/proc/17392/statm: 3133 2178 693 92 0 1477 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 12532

Child status: 1
Real time (s): 0.409289
CPU time (s): 0.397939
CPU user time (s): 0.384941
CPU system time (s): 0.012998
CPU usage (%): 97.2269
Max. virtual memory (cumulated for all children) (KiB): 12532

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.384941
system time used= 0.012998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3185
page faults= 3
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 16
involuntary context switches= 16

runsolver used 0.001999 s user time and 0.007998 s system time

The end

Launcher Data (download as text)

Begin job on node15 on Wed Jan 10 01:23:49 UTC 2007


IDJOB= 247393
IDBENCH= 11121
FILE ID= node15/247393-1168392228

PBS_JOBID= 3522718

Free space on /tmp= 66516 MiB

BENCH NAME= HOME/pub/bench/CPAI06/random/rand-8-20-5/rand-8-20-5-18-800-13_ext.xml
COMMAND LINE= /tmp/evaluation/247393-1168392228/mistral/bin/solver /tmp/evaluation/247393-1168392228/unknown.xml -v 1
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node15/watcher-247393-1168392228 -o ROOT/results/node15/solver-247393-1168392228 -C 1800 -M 900  /tmp/evaluation/247393-1168392228/mistral/bin/solver /tmp/evaluation/247393-1168392228/unknown.xml -v 1

META MD5SUM SOLVER= cb80ed4ac975bdc0101f830a5b1b8f77
MD5SUM BENCH=  a5445ab70379ee1065ebabe08628ea31

RANDOM SEED= 747494519

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		: 3000.276
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		: 3000.276
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:       1481736 kB
Buffers:         39036 kB
Cached:         141656 kB
SwapCached:       5900 kB
Active:         456228 kB
Inactive:        61468 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1481736 kB
SwapTotal:     4192956 kB
SwapFree:      4174172 kB
Dirty:           49576 kB
Writeback:           0 kB
Mapped:         356776 kB
Slab:            40476 kB
Committed_AS:  7177068 kB
PageTables:       3028 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= 66516 MiB



End job on node15 on Wed Jan 10 01:23:49 UTC 2007