Trace number 1092957

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
MDG-probe 2008-06-27UNSAT 1.82272 1.83959

DiagnosticValue
ASSIGNMENTS6462
CHECKS2611750

General information on the benchmark

Namecsp/langford4/
normalized-langford-4-12.xml
MD5SUMfb983333e3cbdf7d1c06cbf488766133
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 benchmark0.923859
Satisfiable
(Un)Satisfiability was proved
Number of variables48
Number of constraints1164
Maximum constraint arity2
Maximum domain size48
Number of constraints which are defined in extension0
Number of constraints which are defined in intension1164
Global constraints used (with number of constraints)

Solver Data (download as text)

0.09/0.10	c mistral-prime version 1.313
0.09/0.10	c 
0.09/0.10	c Parsing xml file
0.09/0.10	c          domains...............     0	(1 domains)
0.09/0.10	c          variables.............     0	(48 variables)
0.09/0.10	c          predicates............     0	(2 predicates)
0.09/0.10	c          constraints...........  0.03	(1164 constraints)
0.09/0.10	c Parsing time:   0.03
0.09/0.10	c
0.09/0.10	c Building model
0.09/0.10	c         1 AllDifferent constraints infered
0.09/0.10	c         0 constants
0.09/0.10	c         0 Boolean variables    (+0)
0.09/0.10	c         0 range variables      (+0)
0.09/0.10	c        48 domain (b) variables (+0)
0.09/0.10	c         0 domain (l) variables (+0)
0.09/0.10	c      1128 constraints          (+37)
0.09/0.10	c         0 values 
0.09/0.10	c Building time:   0.01
0.09/0.10	c
0.09/0.10	c Solving instance
0.09/0.10	c          heuristic = dom/wdeg
0.09/0.10	c          Randomized probing iteration = 100
0.09/0.10	c          probing limit = 30
0.09/0.10	c          level based weights = no
0.09/0.10	c          impact probing = no
0.09/0.10	c          restart policy = No restart
0.09/0.10	c          probing ..........   0.9
0.89/0.95	c          Probing Nodes  3276
0.89/0.95	c          final run   0.87
1.78/1.83	c Solving time:   1.77
1.78/1.83	c
1.78/1.83	s UNSATISFIABLE
1.78/1.83	d CHECKS 2611754
1.78/1.83	d ASSIGNMENTS 6462

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.5 (c) roussel@cril.univ-artois.fr

command line: /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1092957-1215278140/watcher-1092957-1215278140 -o /tmp/evaluation-result-1092957-1215278140/solver-1092957-1215278140 -C 1800 -W 2200 -M 900 --output-limit 1,15 HOME/xsolve HOME/instance-1092957-1215278140.xml -v 1 -rs 573128314 -probe 1 -ph 0 -heu dom/wdeg -res no 

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): 2200 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.09 2.05 2.01 4/82 30903
/proc/meminfo: memFree=1707432/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=820 CPUtime=0
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 39 0 0 0 0 0 0 0 22 0 1 0 2006785615 839680 25 996147200 134512640 135239859 4294956144 18446744073709551615 11932452 0 2147483391 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 205 25 19 177 0 3 0

[startup+0.053291 s]
/proc/loadavg: 2.09 2.05 2.01 4/82 30903
/proc/meminfo: memFree=1707432/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=0.04
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 691 0 0 0 4 0 0 0 22 0 1 0 2006785615 5378048 657 996147200 134512640 135239859 4294956144 18446744073709551615 134804684 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 657 436 177 0 216 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 5252

[startup+0.101334 s]
/proc/loadavg: 2.09 2.05 2.01 4/82 30903
/proc/meminfo: memFree=1707432/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=0.09
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 691 0 0 0 9 0 0 0 22 0 1 0 2006785615 5378048 657 996147200 134512640 135239859 4294956144 18446744073709551615 134821123 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 657 436 177 0 216 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 5252

[startup+0.301366 s]
/proc/loadavg: 2.09 2.05 2.01 4/82 30903
/proc/meminfo: memFree=1707432/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=0.29
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 691 0 0 0 29 0 0 0 24 0 1 0 2006785615 5378048 657 996147200 134512640 135239859 4294956144 18446744073709551615 134804687 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 657 436 177 0 216 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 5252

[startup+0.701438 s]
/proc/loadavg: 2.09 2.05 2.01 4/82 30903
/proc/meminfo: memFree=1707432/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=0.69
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 691 0 0 0 69 0 0 0 25 0 1 0 2006785615 5378048 657 996147200 134512640 135239859 4294956144 18446744073709551615 135016175 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 657 436 177 0 216 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 5252

[startup+1.50158 s]
/proc/loadavg: 2.08 2.05 2.00 3/83 30904
/proc/meminfo: memFree=1706464/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=1.48
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 693 0 0 0 148 0 0 0 25 0 1 0 2006785615 5378048 659 996147200 134512640 135239859 4294956144 18446744073709551615 135016005 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 659 438 177 0 216 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 5252

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

[startup+1.70162 s]
/proc/loadavg: 2.08 2.05 2.00 3/83 30904
/proc/meminfo: memFree=1706464/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=1.68
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 693 0 0 0 168 0 0 0 25 0 1 0 2006785615 5378048 659 996147200 134512640 135239859 4294956144 18446744073709551615 135020552 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 659 438 177 0 216 0
Current children cumulated CPU time (s) 1.68
Current children cumulated vsize (KiB) 5252

[startup+1.80163 s]
/proc/loadavg: 2.08 2.05 2.00 3/83 30904
/proc/meminfo: memFree=1706464/2055920 swapFree=4179784/4192956
[pid=30903] ppid=30901 vsize=5252 CPUtime=1.78
/proc/30903/stat : 30903 (xsolve) R 30901 30903 30407 0 -1 4194304 693 0 0 0 178 0 0 0 25 0 1 0 2006785615 5378048 659 996147200 134512640 135239859 4294956144 18446744073709551615 135073756 0 0 4096 0 0 0 0 17 1 0 0
/proc/30903/statm: 1313 659 438 177 0 216 0
Current children cumulated CPU time (s) 1.78
Current children cumulated vsize (KiB) 5252

Child status: 0
Real time (s): 1.83959
CPU time (s): 1.82272
CPU user time (s): 1.81872
CPU system time (s): 0.003999
CPU usage (%): 99.0829
Max. virtual memory (cumulated for all children) (KiB): 5252

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.81872
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 704
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= 7
involuntary context switches= 86

runsolver used 0.005999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node56 at 2008-07-05 19:15:40
IDJOB=1092957
IDBENCH=58670
IDSOLVER=342
FILE ID=node56/1092957-1215278140
PBS_JOBID= 7882244
Free space on /tmp= 103240 MiB

SOLVER NAME= MDG-probe 2008-06-27
BENCH NAME= CPAI08/csp/langford4/normalized-langford-4-12.xml
COMMAND LINE= HOME/xsolve BENCHNAME -v 1 -rs RANDOMSEED -probe 1 -ph 0 -heu dom/wdeg -res no
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1092957-1215278140/watcher-1092957-1215278140 -o /tmp/evaluation-result-1092957-1215278140/solver-1092957-1215278140 -C 1800 -W 2200 -M 900 --output-limit 1,15  HOME/xsolve HOME/instance-1092957-1215278140.xml -v 1 -rs 573128314 -probe 1 -ph 0 -heu dom/wdeg -res no

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB

MD5SUM BENCH= fb983333e3cbdf7d1c06cbf488766133
RANDOM SEED=573128314

node56.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		: 3000.265
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	: 5931.00
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		: 3000.265
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:       1707912 kB
Buffers:         43584 kB
Cached:         224812 kB
SwapCached:       6936 kB
Active:         174956 kB
Inactive:       119548 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1707912 kB
SwapTotal:     4192956 kB
SwapFree:      4179784 kB
Dirty:            1300 kB
Writeback:           0 kB
Mapped:          42496 kB
Slab:            38460 kB
Committed_AS:  4036952 kB
PageTables:       1988 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= 103240 MiB
End job on node56 at 2008-07-05 19:15:42