Trace number 2080910

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 21.8037 22.0011

DiagnosticValue
ASSIGNMENTS8715

General information on the benchmark

Namecsp/langford3/
normalized-langford-3-11.xml
MD5SUMcc39bb6005e6336edb9143afa2108552
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 benchmark0.756884
Satisfiable
(Un)Satisfiability was proved
Number of variables33
Number of constraints550
Maximum constraint arity2
Maximum domain size33
Number of constraints which are defined in extension0
Number of constraints which are defined in intension550
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c has big domains
0.00/0.01	c big-domain mode
0.18/0.20	c Seed is 1776403648
0.18/0.20	c Constructing HOME/instance-2080910-1247719051.xml 
0.18/0.20	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V18,V19,V20,V21,V22,V23,V24,V25,V26,V27,V28,V29,V30,V31,V32,V0)
0.18/0.20	c  with 551 constraints
0.18/0.20	c Solving 8715 backtracks 13 restarts
21.70/21.99	s UNSATISFIABLE
21.70/21.99	d ASSIGNMENTS 8715

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-2080910-1247719051/watcher-2080910-1247719051 -o /tmp/evaluation-result-2080910-1247719051/solver-2080910-1247719051 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1776403648 HOME/instance-2080910-1247719051.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: 1.98 1.98 1.99 4/72 19226
/proc/meminfo: memFree=1554104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=5356 CPUtime=0
/proc/19226/stat : 19226 (pcssolve) R 19224 19226 16428 0 -1 4194304 271 0 0 0 0 0 0 0 22 0 1 0 58968612 5484544 239 996147200 4194304 4889804 548682068800 18446744073709551615 4522038 0 0 4100 65536 0 0 0 17 1 0 0
/proc/19226/statm: 1339 239 199 169 0 50 0

[startup+0.091876 s]
/proc/loadavg: 1.98 1.98 1.99 4/72 19226
/proc/meminfo: memFree=1554104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=4752 CPUtime=0.07
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 892 654 0 0 7 0 0 0 18 0 1 0 58968612 4866048 523 996147200 134512640 135215973 4294956304 18446744073709551615 134590078 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 1188 523 408 171 0 113 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 4752

[startup+0.102874 s]
/proc/loadavg: 1.98 1.98 1.99 4/72 19226
/proc/meminfo: memFree=1554104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=4752 CPUtime=0.08
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 897 654 0 0 8 0 0 0 18 0 1 0 58968612 4866048 528 996147200 134512640 135215973 4294956304 18446744073709551615 4158960153 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 1188 528 408 171 0 113 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4752

[startup+0.301888 s]
/proc/loadavg: 1.98 1.98 1.99 4/72 19226
/proc/meminfo: memFree=1554104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=5272 CPUtime=0.28
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 1006 654 0 0 28 0 0 0 19 0 1 0 58968612 5398528 637 996147200 134512640 135215973 4294956304 18446744073709551615 134590055 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 1318 637 408 171 0 243 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5272

[startup+0.702915 s]
/proc/loadavg: 1.98 1.98 1.99 4/72 19226
/proc/meminfo: memFree=1554104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=6072 CPUtime=0.68
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 1225 654 0 0 68 0 0 0 23 0 1 0 58968612 6217728 856 996147200 134512640 135215973 4294956304 18446744073709551615 134930407 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 1518 856 408 171 0 443 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6072

[startup+1.50197 s]
/proc/loadavg: 1.98 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1551600/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=7776 CPUtime=1.47
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 1650 654 0 0 147 0 0 0 25 0 1 0 58968612 7962624 1281 996147200 134512640 135215973 4294956304 18446744073709551615 4158960165 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 1944 1281 408 171 0 869 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 7776

[startup+3.10108 s]
/proc/loadavg: 1.98 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1549104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=11440 CPUtime=3.05
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 2589 654 0 0 305 0 0 0 25 0 1 0 58968612 11714560 2122 996147200 134512640 135215973 4294956304 18446744073709551615 134532711 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 2860 2122 408 171 0 1785 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 11440

[startup+6.30129 s]
/proc/loadavg: 1.98 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1542128/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=18380 CPUtime=6.23
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 4382 654 0 0 621 2 0 0 25 0 1 0 58968612 18821120 3786 996147200 134512640 135215973 4294956304 18446744073709551615 134587062 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 4595 3786 408 171 0 3520 0
Current children cumulated CPU time (s) 6.23
Current children cumulated vsize (KiB) 18380

[startup+12.7017 s]
/proc/loadavg: 1.99 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1528176/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=32116 CPUtime=12.57
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 7975 654 0 0 1253 4 0 0 25 0 1 0 58968612 32886784 7089 996147200 134512640 135215973 4294956304 18446744073709551615 4158960021 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 8029 7089 408 171 0 6954 0
Current children cumulated CPU time (s) 12.57
Current children cumulated vsize (KiB) 32116

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

[startup+15.9019 s]
/proc/loadavg: 1.99 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1522032/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=37884 CPUtime=15.74
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 9497 654 0 0 1569 5 0 0 25 0 1 0 58968612 38793216 8611 996147200 134512640 135215973 4294956304 18446744073709551615 134901782 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 9471 8611 408 171 0 8396 0
Current children cumulated CPU time (s) 15.74
Current children cumulated vsize (KiB) 37884

[startup+19.1012 s]
/proc/loadavg: 1.99 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1515696/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=44496 CPUtime=18.91
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 11222 654 0 0 1885 6 0 0 25 0 1 0 58968612 45563904 10271 996147200 134512640 135215973 4294956304 18446744073709551615 134628694 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 11124 10271 408 171 0 10049 0
Current children cumulated CPU time (s) 18.91
Current children cumulated vsize (KiB) 44496

[startup+20.7013 s]
/proc/loadavg: 1.99 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1513072/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=47236 CPUtime=20.51
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 11939 654 0 0 2044 7 0 0 25 0 1 0 58968612 48369664 10988 996147200 134512640 135215973 4294956304 18446744073709551615 4739224 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 11809 10988 408 171 0 10734 0
Current children cumulated CPU time (s) 20.51
Current children cumulated vsize (KiB) 47236

[startup+21.5013 s]
/proc/loadavg: 1.99 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1511088/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=48544 CPUtime=21.3
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 12291 654 0 0 2123 7 0 0 25 0 1 0 58968612 49709056 11340 996147200 134512640 135215973 4294956304 18446744073709551615 4158960021 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 12136 11340 408 171 0 11061 0
Current children cumulated CPU time (s) 21.3
Current children cumulated vsize (KiB) 48544

[startup+21.9013 s]
/proc/loadavg: 1.99 1.98 1.99 3/73 19231
/proc/meminfo: memFree=1509104/2055920 swapFree=4192812/4192956
[pid=19226] ppid=19224 vsize=49324 CPUtime=21.7
/proc/19226/stat : 19226 (pcs.big) R 19224 19226 16428 0 -1 4194304 12486 654 0 0 2163 7 0 0 25 0 1 0 58968612 50507776 11535 996147200 134512640 135215973 4294956304 18446744073709551615 134583815 0 0 4096 0 0 0 0 17 1 0 0
/proc/19226/statm: 12331 11535 408 171 0 11256 0
Current children cumulated CPU time (s) 21.7
Current children cumulated vsize (KiB) 49324

Child status: 0
Real time (s): 22.0011
CPU time (s): 21.8037
CPU user time (s): 21.7127
CPU system time (s): 0.090986
CPU usage (%): 99.1029
Max. virtual memory (cumulated for all children) (KiB): 49324

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 21.7127
system time used= 0.090986
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 13148
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= 18
involuntary context switches= 477

runsolver used 0.032994 second user time and 0.075988 second system time

The end

Launcher Data 

Begin job on node52 at 2009-07-16 06:37:31
IDJOB=2080910
IDBENCH=57191
IDSOLVER=733
FILE ID=node52/2080910-1247719051
PBS_JOBID= 9521338
Free space on /tmp= 66188 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/langford3/normalized-langford-3-11.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2080910-1247719051/watcher-2080910-1247719051 -o /tmp/evaluation-result-2080910-1247719051/solver-2080910-1247719051 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1776403648 HOME/instance-2080910-1247719051.xml

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

MD5SUM BENCH= cc39bb6005e6336edb9143afa2108552
RANDOM SEED=1776403648

node52.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		: 3000.236
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:       1554584 kB
Buffers:         76108 kB
Cached:         235672 kB
SwapCached:          0 kB
Active:         196172 kB
Inactive:       236408 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1554584 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1776 kB
Writeback:           0 kB
Mapped:         132404 kB
Slab:            53688 kB
Committed_AS:   769788 kB
PageTables:       2160 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= 66184 MiB
End job on node52 at 2009-07-16 06:37:53