Trace number 2074376

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 9.78251 9.87722

DiagnosticValue
ASSIGNMENTS43879

General information on the benchmark

Namecsp/
chessboardColoration/normalized-cc-8-8-2.xml
MD5SUMc749bc7e0566d10272437da124749429
Bench CategoryN-ARY-INT (n-ary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.924859
Satisfiable
(Un)Satisfiability was proved
Number of variables64
Number of constraints784
Maximum constraint arity4
Maximum domain size2
Number of constraints which are defined in extension0
Number of constraints which are defined in intension784
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c small-domain mode
0.00/0.04	c Seed is 1743583336
0.00/0.04	c Constructing HOME/instance-2074376-1247712375.xml  with 14224 constraints
0.00/0.10	c Solving 43879 backtracks 17 restarts
9.69/9.87	s UNSATISFIABLE
9.69/9.87	d ASSIGNMENTS 43879

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-2074376-1247712375/watcher-2074376-1247712375 -o /tmp/evaluation-result-2074376-1247712375/solver-2074376-1247712375 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1743583336 HOME/instance-2074376-1247712375.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 2.04 2.02 4/81 17955
/proc/meminfo: memFree=1543040/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=18576 CPUtime=0
/proc/17955/stat : 17955 (runsolver) R 17953 17955 17399 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 58300231 19021824 284 996147200 4194304 4302564 548682068496 18446744073709551615 271638392103 0 0 4096 24578 0 0 0 17 1 0 0
/proc/17955/statm: 4644 284 249 26 0 2626 0

[startup+0.0203491 s]
/proc/loadavg: 2.06 2.04 2.02 4/81 17955
/proc/meminfo: memFree=1543040/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=1828 CPUtime=0
/proc/17955/stat : 17955 (pcs.small) D 17953 17955 17399 0 -1 4194304 405 822 0 0 0 0 0 0 18 0 1 0 58300231 1871872 30 996147200 134512640 135095119 4294956304 18446744073709551615 6890276 0 2147483391 4096 0 18446744072099781622 0 0 17 1 0 0
/proc/17955/statm: 740 46 35 142 0 10 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 1828

[startup+0.300377 s]
/proc/loadavg: 2.06 2.04 2.02 4/81 17955
/proc/meminfo: memFree=1543040/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=7304 CPUtime=0.27
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 1646 822 0 0 27 0 0 0 19 0 1 0 58300231 7479296 1157 996147200 134512640 135095119 4294956304 18446744073709551615 134840329 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 1826 1157 387 142 0 780 0
Current children cumulated CPU time (s) 0.27
Current children cumulated vsize (KiB) 7304

[startup+0.401386 s]
/proc/loadavg: 2.06 2.04 2.02 4/81 17955
/proc/meminfo: memFree=1543040/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=7416 CPUtime=0.38
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 1658 822 0 0 38 0 0 0 20 0 1 0 58300231 7593984 1169 996147200 134512640 135095119 4294956304 18446744073709551615 134617260 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 1854 1169 387 142 0 808 0
Current children cumulated CPU time (s) 0.38
Current children cumulated vsize (KiB) 7416

[startup+0.701415 s]
/proc/loadavg: 2.06 2.04 2.02 4/81 17955
/proc/meminfo: memFree=1543040/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=7516 CPUtime=0.67
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 1697 822 0 0 67 0 0 0 23 0 1 0 58300231 7696384 1208 996147200 134512640 135095119 4294956304 18446744073709551615 134642992 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 1879 1208 387 142 0 833 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 7516

[startup+1.5015 s]
/proc/loadavg: 2.06 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1539128/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=8524 CPUtime=1.46
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 1967 822 0 0 146 0 0 0 25 0 1 0 58300231 8728576 1349 996147200 134512640 135095119 4294956304 18446744073709551615 134883033 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 2131 1349 387 142 0 1085 0
Current children cumulated CPU time (s) 1.46
Current children cumulated vsize (KiB) 8524

[startup+3.10166 s]
/proc/loadavg: 2.06 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1538360/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=9464 CPUtime=3.05
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 2262 822 0 0 305 0 0 0 25 0 1 0 58300231 9691136 1644 996147200 134512640 135095119 4294956304 18446744073709551615 134642693 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 2366 1644 387 142 0 1320 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 9464

[startup+6.30199 s]
/proc/loadavg: 2.06 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1535800/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=12400 CPUtime=6.22
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3142 822 0 0 621 1 0 0 25 0 1 0 58300231 12697600 2234 996147200 134512640 135095119 4294956304 18446744073709551615 134578297 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3100 2234 387 142 0 2054 0
Current children cumulated CPU time (s) 6.22
Current children cumulated vsize (KiB) 12400

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

[startup+6.50201 s]
/proc/loadavg: 2.06 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1535800/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=12500 CPUtime=6.42
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3175 822 0 0 641 1 0 0 25 0 1 0 58300231 12800000 2267 996147200 134512640 135095119 4294956304 18446744073709551615 134615601 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3125 2267 387 142 0 2079 0
Current children cumulated CPU time (s) 6.42
Current children cumulated vsize (KiB) 12500

[startup+8.10117 s]
/proc/loadavg: 2.06 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1534328/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=13500 CPUtime=8
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3477 822 0 0 799 1 0 0 25 0 1 0 58300231 13824000 2569 996147200 134512640 135095119 4294956304 18446744073709551615 134617027 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3375 2569 387 142 0 2329 0
Current children cumulated CPU time (s) 8
Current children cumulated vsize (KiB) 13500

[startup+8.90126 s]
/proc/loadavg: 2.05 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1533432/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=13900 CPUtime=8.8
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3636 822 0 0 879 1 0 0 25 0 1 0 58300231 14233600 2728 996147200 134512640 135095119 4294956304 18446744073709551615 134583160 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3475 2728 387 142 0 2429 0
Current children cumulated CPU time (s) 8.8
Current children cumulated vsize (KiB) 13900

[startup+9.3013 s]
/proc/loadavg: 2.05 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1533432/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=14200 CPUtime=9.19
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3716 822 0 0 918 1 0 0 25 0 1 0 58300231 14540800 2808 996147200 134512640 135095119 4294956304 18446744073709551615 134590360 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3550 2808 387 142 0 2504 0
Current children cumulated CPU time (s) 9.19
Current children cumulated vsize (KiB) 14200

[startup+9.70134 s]
/proc/loadavg: 2.05 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1533432/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=14528 CPUtime=9.59
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3829 822 0 0 958 1 0 0 25 0 1 0 58300231 14876672 2888 996147200 134512640 135095119 4294956304 18446744073709551615 134615669 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3632 2888 387 142 0 2586 0
Current children cumulated CPU time (s) 9.59
Current children cumulated vsize (KiB) 14528

[startup+9.80135 s]
/proc/loadavg: 2.05 2.04 2.02 3/82 17961
/proc/meminfo: memFree=1533432/2055920 swapFree=4192812/4192956
[pid=17955] ppid=17953 vsize=14628 CPUtime=9.69
/proc/17955/stat : 17955 (pcs.small) R 17953 17955 17399 0 -1 4194304 3850 822 0 0 968 1 0 0 25 0 1 0 58300231 14979072 2909 996147200 134512640 135095119 4294956304 18446744073709551615 134616992 0 0 4096 0 0 0 0 17 1 0 0
/proc/17955/statm: 3657 2909 387 142 0 2611 0
Current children cumulated CPU time (s) 9.69
Current children cumulated vsize (KiB) 14628

Child status: 0
Real time (s): 9.87722
CPU time (s): 9.78251
CPU user time (s): 9.75952
CPU system time (s): 0.022996
CPU usage (%): 99.0411
Max. virtual memory (cumulated for all children) (KiB): 14628

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 9.75952
system time used= 0.022996
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4680
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= 410

runsolver used 0.016997 second user time and 0.032994 second system time

The end

Launcher Data 

Begin job on node67 at 2009-07-16 04:46:15
IDJOB=2074376
IDBENCH=56093
IDSOLVER=733
FILE ID=node67/2074376-1247712375
PBS_JOBID= 9521408
Free space on /tmp= 66332 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/chessboardColoration/normalized-cc-8-8-2.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2074376-1247712375/watcher-2074376-1247712375 -o /tmp/evaluation-result-2074376-1247712375/solver-2074376-1247712375 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1743583336 HOME/instance-2074376-1247712375.xml

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

MD5SUM BENCH= c749bc7e0566d10272437da124749429
RANDOM SEED=1743583336

node67.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		: 3000.239
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		: 3000.239
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:       1543520 kB
Buffers:         67600 kB
Cached:         260160 kB
SwapCached:          0 kB
Active:         178920 kB
Inactive:       259444 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1543520 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2276 kB
Writeback:           0 kB
Mapped:         130988 kB
Slab:            58828 kB
Committed_AS:   651336 kB
PageTables:       2072 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= 66328 MiB
End job on node67 at 2009-07-16 04:46:25