Trace number 247458

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) 0.400938 0.410608

General information on the benchmark

Namerandom/rand-8-20-5/
rand-8-20-5-18-800-7_ext.xml
MD5SUM0ab3dbb9edfa2aa092a5a9fe1825fa3f
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 benchmark20.2569
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)

0.02	c 
0.02	c Parsing xml file
0.02	c 	domains...............    0
0.02	c 	variables.............    0
0.02	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/node26/watcher-247458-1168437895 -o ROOT/results/node26/solver-247458-1168437895 -C 1800 -M 900 /tmp/evaluation/247458-1168437895/mistral/bin/solver /tmp/evaluation/247458-1168437895/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: 0.75 0.93 1.08 3/94 17687
/proc/meminfo: memFree=1734848/2055920 swapFree=4191880/4192956
[pid=17686] ppid=17677 vsize=540 CPUtime=0
/proc/17686/stat : 17686 (solver) R 17677 17686 17366 0 -1 4194304 41 0 0 0 0 0 0 0 19 0 1 0 192185094 552960 26 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 12591908 0 2147483391 4096 0 0 0 0 17 1 0 0
/proc/17686/statm: 135 26 21 92 0 18 0

[startup+0.10257 s]
/proc/loadavg: 0.75 0.93 1.08 3/94 17687
/proc/meminfo: memFree=1734848/2055920 swapFree=4191880/4192956
[pid=17686] ppid=17677 vsize=12524 CPUtime=0.09
/proc/17686/stat : 17686 (solver) R 17677 17686 17366 0 -1 4194304 3143 0 0 0 8 1 0 0 19 0 1 0 192185094 12824576 2176 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 13024834 0 0 4096 0 0 0 0 17 1 0 0
/proc/17686/statm: 3131 2176 693 92 0 1475 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 12524

Child status: 1
Real time (s): 0.410608
CPU time (s): 0.400938
CPU user time (s): 0.382941
CPU system time (s): 0.017997
CPU usage (%): 97.645
Max. virtual memory (cumulated for all children) (KiB): 12524

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.382941
system time used= 0.017997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3182
page faults= 4
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= 19

runsolver used 0.003999 s user time and 0.004999 s system time

The end

Launcher Data (download as text)

Begin job on node26 on Wed Jan 10 14:05:04 UTC 2007


IDJOB= 247458
IDBENCH= 11128
FILE ID= node26/247458-1168437895

PBS_JOBID= 3524015

Free space on /tmp= 66494 MiB

BENCH NAME= HOME/pub/bench/CPAI06/random/rand-8-20-5/rand-8-20-5-18-800-7_ext.xml
COMMAND LINE= /tmp/evaluation/247458-1168437895/mistral/bin/solver /tmp/evaluation/247458-1168437895/unknown.xml -v 1
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node26/watcher-247458-1168437895 -o ROOT/results/node26/solver-247458-1168437895 -C 1800 -M 900  /tmp/evaluation/247458-1168437895/mistral/bin/solver /tmp/evaluation/247458-1168437895/unknown.xml -v 1

META MD5SUM SOLVER= cb80ed4ac975bdc0101f830a5b1b8f77
MD5SUM BENCH=  0ab3dbb9edfa2aa092a5a9fe1825fa3f

RANDOM SEED= 924737630

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		: 3000.236
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		: 3000.236
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:       1740352 kB
Buffers:         29808 kB
Cached:         167960 kB
SwapCached:        384 kB
Active:         169896 kB
Inactive:        91452 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1740352 kB
SwapTotal:     4192956 kB
SwapFree:      4191880 kB
Dirty:           50540 kB
Writeback:           0 kB
Mapped:          81224 kB
Slab:            39324 kB
Committed_AS:  3881424 kB
PageTables:       2112 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= 66494 MiB



End job on node26 on Wed Jan 10 14:05:10 UTC 2007