Trace number 2085948

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
pcs 0.3.2UNSAT 0.075987 0.0803201

DiagnosticValue
ASSIGNMENTS502

General information on the benchmark

Namecsp/graphColoring/mug/
normalized-mug100-1-3.xml
MD5SUMea65c55f02bcd83512a122b7929c3683
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 benchmark0.066989
Satisfiable
(Un)Satisfiability was proved
Number of variables100
Number of constraints166
Maximum constraint arity2
Maximum domain size3
Number of constraints which are defined in extension0
Number of constraints which are defined in intension166
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c small-domain mode
0.00/0.08	c Seed is 1371195206
0.00/0.08	c Constructing HOME/instance-2085948-1247726643.xml  with 166 constraints
0.00/0.08	c Solving 502 backtracks 6 restarts
0.00/0.08	s UNSATISFIABLE
0.00/0.08	d ASSIGNMENTS 502

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2085948-1247726643/watcher-2085948-1247726643 -o /tmp/evaluation-result-2085948-1247726643/solver-2085948-1247726643 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1371195206 HOME/instance-2085948-1247726643.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 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


[startup+0 s]
/proc/loadavg: 2.06 2.00 2.00 4/81 13958
/proc/meminfo: memFree=1515856/2055920 swapFree=4192812/4192956
[pid=13958] ppid=13956 vsize=18576 CPUtime=0
/proc/13958/stat : 13958 (runsolver) R 13956 13958 12662 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 59727128 19021824 284 996147200 4194304 4302564 548682068496 18446744073709551615 227607637287 0 0 4096 24578 0 0 0 17 1 0 0
/proc/13958/statm: 4644 284 249 26 0 2626 0

Solver just ended. Dumping a history of the last processes samples

Child status: 0
Real time (s): 0.0803201
CPU time (s): 0.075987
CPU user time (s): 0.06199
CPU system time (s): 0.013997
CPU usage (%): 94.6053
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.06199
system time used= 0.013997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1675
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= 22
involuntary context switches= 8

runsolver used 0 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node66 at 2009-07-16 08:44:03
IDJOB=2085948
IDBENCH=58533
IDSOLVER=733
FILE ID=node66/2085948-1247726643
PBS_JOBID= 9521485
Free space on /tmp= 66260 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/graphColoring/mug/normalized-mug100-1-3.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2085948-1247726643/watcher-2085948-1247726643 -o /tmp/evaluation-result-2085948-1247726643/solver-2085948-1247726643 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1371195206 HOME/instance-2085948-1247726643.xml

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB
MAX NB THREAD= 0

MD5SUM BENCH= ea65c55f02bcd83512a122b7929c3683
RANDOM SEED=1371195206

node66.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.214
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		: 3000.214
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:       1516336 kB
Buffers:         75152 kB
Cached:         345564 kB
SwapCached:          0 kB
Active:          79700 kB
Inactive:       380908 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1516336 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2268 kB
Writeback:           0 kB
Mapped:          60296 kB
Slab:            64040 kB
Committed_AS:   533004 kB
PageTables:       1848 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= 66256 MiB
End job on node66 at 2009-07-16 08:44:03