Trace number 2080437

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 121.14 122.157

DiagnosticValue
ASSIGNMENTS69081

General information on the benchmark

Namecsp/queensKnights/
normalized-queensKnights-8-5-add.xml
MD5SUM975c174ddd3fe86ae18e7a03c329b104
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 benchmark0.741886
Satisfiable
(Un)Satisfiability was proved
Number of variables13
Number of constraints38
Maximum constraint arity2
Maximum domain size64
Number of constraints which are defined in extension0
Number of constraints which are defined in intension38
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
0.00/0.01	c Seed is 1838375698
0.00/0.01	c Constructing HOME/instance-2080437-1247717696.xml 
0.00/0.02	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V0)
0.00/0.02	c  with 253 constraints
0.00/0.02	c Solving 69081 backtracks 18 restarts
121.07/122.13	s UNSATISFIABLE
121.07/122.13	d ASSIGNMENTS 69081

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-2080437-1247717696/watcher-2080437-1247717696 -o /tmp/evaluation-result-2080437-1247717696/solver-2080437-1247717696 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1838375698 HOME/instance-2080437-1247717696.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: 2.13 2.04 2.01 4/72 15167
/proc/meminfo: memFree=1588712/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=18576 CPUtime=0
/proc/15167/stat : 15167 (runsolver) R 15165 15167 12861 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 58833738 19021824 284 996147200 4194304 4302564 548682068496 18446744073709551615 255539604775 0 0 4096 24578 0 0 0 17 1 0 0
/proc/15167/statm: 4644 284 249 26 0 2626 0

[startup+0.067129 s]
/proc/loadavg: 2.13 2.04 2.01 4/72 15167
/proc/meminfo: memFree=1588712/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=4764 CPUtime=0.04
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 896 643 0 0 4 0 0 0 24 0 1 0 58833738 4878336 527 996147200 134512640 135215973 4294956304 18446744073709551615 134641097 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 1191 527 423 171 0 116 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 4764

[startup+0.10213 s]
/proc/loadavg: 2.13 2.04 2.01 4/72 15167
/proc/meminfo: memFree=1588712/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=4764 CPUtime=0.08
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 913 643 0 0 8 0 0 0 24 0 1 0 58833738 4878336 544 996147200 134512640 135215973 4294956304 18446744073709551615 4158960638 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 1191 544 423 171 0 116 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4764

[startup+0.302151 s]
/proc/loadavg: 2.13 2.04 2.01 4/72 15167
/proc/meminfo: memFree=1588712/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=5184 CPUtime=0.28
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 994 643 0 0 28 0 0 0 25 0 1 0 58833738 5308416 625 996147200 134512640 135215973 4294956304 18446744073709551615 134589845 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 1296 625 423 171 0 221 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5184

[startup+0.701192 s]
/proc/loadavg: 2.13 2.04 2.01 4/72 15167
/proc/meminfo: memFree=1588712/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=5836 CPUtime=0.67
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 1151 643 0 0 67 0 0 0 25 0 1 0 58833738 5976064 782 996147200 134512640 135215973 4294956304 18446744073709551615 134587268 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 1459 782 423 171 0 384 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 5836

[startup+1.50126 s]
/proc/loadavg: 2.13 2.04 2.01 3/73 15172
/proc/meminfo: memFree=1586848/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=6616 CPUtime=1.46
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 1373 643 0 0 146 0 0 0 25 0 1 0 58833738 6774784 1004 996147200 134512640 135215973 4294956304 18446744073709551615 134600150 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 1654 1004 423 171 0 579 0
Current children cumulated CPU time (s) 1.46
Current children cumulated vsize (KiB) 6616

[startup+3.10141 s]
/proc/loadavg: 2.13 2.04 2.01 3/73 15172
/proc/meminfo: memFree=1585312/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=8468 CPUtime=3.05
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 1822 643 0 0 305 0 0 0 25 0 1 0 58833738 8671232 1420 996147200 134512640 135215973 4294956304 18446744073709551615 4158960258 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 2117 1420 423 171 0 1042 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 8468

[startup+6.30172 s]
/proc/loadavg: 2.12 2.04 2.01 3/73 15172
/proc/meminfo: memFree=1581736/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=12108 CPUtime=6.23
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 2836 643 0 0 622 1 0 0 25 0 1 0 58833738 12398592 2336 996147200 134512640 135215973 4294956304 18446744073709551615 135094355 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 3027 2336 423 171 0 1952 0
Current children cumulated CPU time (s) 6.23
Current children cumulated vsize (KiB) 12108

[startup+12.7013 s]
/proc/loadavg: 2.11 2.04 2.01 3/73 15172
/proc/meminfo: memFree=1574440/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=19264 CPUtime=12.58
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 4748 643 0 0 1255 3 0 0 25 0 1 0 58833738 19726336 4054 996147200 134512640 135215973 4294956304 18446744073709551615 134584959 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 4816 4054 423 171 0 3741 0
Current children cumulated CPU time (s) 12.58
Current children cumulated vsize (KiB) 19264

[startup+25.5025 s]
/proc/loadavg: 2.09 2.04 2.01 3/73 15172
/proc/meminfo: memFree=1563752/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=30108 CPUtime=25.27
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 7668 643 0 0 2523 4 0 0 25 0 1 0 58833738 30830592 6588 996147200 134512640 135215973 4294956304 18446744073709551615 4158960084 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 7527 6588 423 171 0 6452 0
Current children cumulated CPU time (s) 25.27
Current children cumulated vsize (KiB) 30108

[startup+51.1029 s]
/proc/loadavg: 2.06 2.03 2.00 3/73 15172
/proc/meminfo: memFree=1541032/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=53972 CPUtime=50.66
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 14117 643 0 0 5058 8 0 0 25 0 1 0 58833738 55267328 12267 996147200 134512640 135215973 4294956304 18446744073709551615 4158960255 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 13493 12267 423 171 0 12418 0
Current children cumulated CPU time (s) 50.66
Current children cumulated vsize (KiB) 53972

[startup+102.307 s]
/proc/loadavg: 2.02 2.03 2.00 3/73 15172
/proc/meminfo: memFree=1500648/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=93756 CPUtime=101.44
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 24923 643 0 0 10128 16 0 0 25 0 1 0 58833738 96006144 22048 996147200 134512640 135215973 4294956304 18446744073709551615 134908134 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 23439 22048 423 171 0 22364 0
Current children cumulated CPU time (s) 101.44
Current children cumulated vsize (KiB) 93756

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

[startup+115.102 s]
/proc/loadavg: 2.02 2.02 2.00 3/73 15172
/proc/meminfo: memFree=1489832/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=105912 CPUtime=114.13
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 28125 643 0 0 11395 18 0 0 25 0 1 0 58833738 108453888 24737 996147200 134512640 135215973 4294956304 18446744073709551615 134591029 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 26478 24737 423 171 0 25403 0
Current children cumulated CPU time (s) 114.13
Current children cumulated vsize (KiB) 105912

[startup+118.301 s]
/proc/loadavg: 2.02 2.02 2.00 3/73 15172
/proc/meminfo: memFree=1487784/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=108000 CPUtime=117.31
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 28695 643 0 0 11712 19 0 0 25 0 1 0 58833738 110592000 25307 996147200 134512640 135215973 4294956304 18446744073709551615 134609802 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 27000 25307 423 171 0 25925 0
Current children cumulated CPU time (s) 117.31
Current children cumulated vsize (KiB) 108000

[startup+119.906 s]
/proc/loadavg: 2.02 2.02 2.00 3/73 15172
/proc/meminfo: memFree=1486376/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=108916 CPUtime=118.89
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 28971 643 0 0 11870 19 0 0 25 0 1 0 58833738 111529984 25583 996147200 134512640 135215973 4294956304 18446744073709551615 134680659 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 27229 25583 423 171 0 26154 0
Current children cumulated CPU time (s) 118.89
Current children cumulated vsize (KiB) 108916

[startup+121.501 s]
/proc/loadavg: 2.02 2.02 2.00 3/73 15172
/proc/meminfo: memFree=1485608/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=109952 CPUtime=120.48
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 29252 643 0 0 12029 19 0 0 25 0 1 0 58833738 112590848 25864 996147200 134512640 135215973 4294956304 18446744073709551615 4158960185 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 27488 25864 423 171 0 26413 0
Current children cumulated CPU time (s) 120.48
Current children cumulated vsize (KiB) 109952

[startup+121.902 s]
/proc/loadavg: 2.02 2.02 2.00 3/73 15172
/proc/meminfo: memFree=1485608/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=110208 CPUtime=120.87
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 29322 643 0 0 12068 19 0 0 25 0 1 0 58833738 112852992 25934 996147200 134512640 135215973 4294956304 18446744073709551615 4158960010 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 27552 25934 423 171 0 26477 0
Current children cumulated CPU time (s) 120.87
Current children cumulated vsize (KiB) 110208

[startup+122.107 s]
/proc/loadavg: 2.02 2.02 2.00 3/73 15172
/proc/meminfo: memFree=1486824/2055920 swapFree=4192812/4192956
[pid=15167] ppid=15165 vsize=106236 CPUtime=121.07
/proc/15167/stat : 15167 (pcs.big) R 15165 15167 12861 0 -1 4194304 29331 643 0 0 12088 19 0 0 25 0 1 0 58833738 108785664 25401 996147200 134512640 135215973 4294956304 18446744073709551615 4158851740 0 0 4096 0 0 0 0 17 1 0 0
/proc/15167/statm: 26559 25401 423 171 0 25484 0
Current children cumulated CPU time (s) 121.07
Current children cumulated vsize (KiB) 106236

Child status: 0
Real time (s): 122.157
CPU time (s): 121.14
CPU user time (s): 120.921
CPU system time (s): 0.218966
CPU usage (%): 99.1675
Max. virtual memory (cumulated for all children) (KiB): 110208

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 120.921
system time used= 0.218966
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 29976
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= 19
involuntary context switches= 2694

runsolver used 0.135979 second user time and 0.361944 second system time

The end

Launcher Data 

Begin job on node48 at 2009-07-16 06:14:56
IDJOB=2080437
IDBENCH=57088
IDSOLVER=733
FILE ID=node48/2080437-1247717696
PBS_JOBID= 9521317
Free space on /tmp= 66372 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/queensKnights/normalized-queensKnights-8-5-add.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2080437-1247717696/watcher-2080437-1247717696 -o /tmp/evaluation-result-2080437-1247717696/solver-2080437-1247717696 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1838375698 HOME/instance-2080437-1247717696.xml

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

MD5SUM BENCH= 975c174ddd3fe86ae18e7a03c329b104
RANDOM SEED=1838375698

node48.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		: 3000.237
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		: 3000.237
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:       1589192 kB
Buffers:         73352 kB
Cached:         286504 kB
SwapCached:          0 kB
Active:         100912 kB
Inactive:       289812 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1589192 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1844 kB
Writeback:           0 kB
Mapped:          42340 kB
Slab:            61488 kB
Committed_AS:   581948 kB
PageTables:       1732 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= 66372 MiB
End job on node48 at 2009-07-16 06:16:58