Trace number 2086971

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 17.1464 17.1571

DiagnosticValue
ASSIGNMENTS3300

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 benchmark0.604907
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 

0.00/0.01	c has big domains
0.00/0.01	c big-domain mode
0.18/0.21	c Seed is 5107252
0.18/0.21	c Constructing HOME/instance-2086971-1247727025.xml 
0.18/0.21	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,V33,V34,V35,V36,V37,V38,V39,V40,V41,V42,V43,V44,V45,V46,V47,V0)
0.18/0.21	c  with 1165 constraints
0.18/0.21	c Solving 3300 backtracks 11 restarts
17.08/17.15	s UNSATISFIABLE
17.08/17.15	d ASSIGNMENTS 3300

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-2086971-1247727025/watcher-2086971-1247727025 -o /tmp/evaluation-result-2086971-1247727025/solver-2086971-1247727025 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 5107252 HOME/instance-2086971-1247727025.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: 2.00 1.99 1.99 4/83 13318
/proc/meminfo: memFree=1133264/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=5356 CPUtime=0
/proc/13318/stat : 13318 (pcssolve) S 13316 13318 13195 0 -1 4194304 305 0 0 0 0 0 0 0 18 0 1 0 59767739 5484544 242 996147200 4194304 4889804 548682068800 18446744073709551615 228043842372 0 65536 4100 65538 18446744071563356171 0 0 17 0 0 0
/proc/13318/statm: 1339 242 201 169 0 50 0
[pid=13319] ppid=13318 vsize=5356 CPUtime=0
/proc/13319/stat : 13319 (pcssolve) R 13318 13318 13195 0 -1 4194368 22 0 0 0 0 0 0 0 19 0 1 0 59767739 5484544 243 996147200 4194304 4889804 548682068800 18446744073709551615 228043844903 0 0 4096 0 0 0 0 17 1 0 0
/proc/13319/statm: 1339 243 202 169 0 50 0
[pid=13320] ppid=13318 vsize=3676 CPUtime=0
/proc/13320/stat : 13320 (grep) R 13318 13318 13195 0 -1 4194304 139 0 0 0 0 0 0 0 20 0 1 0 59767739 3764224 106 996147200 4194304 4274172 548682069040 18446744073709551615 228043894144 0 0 4096 0 0 0 0 17 0 0 0
/proc/13320/statm: 919 106 87 19 0 43 0

[startup+0.0728421 s]
/proc/loadavg: 2.00 1.99 1.99 4/83 13318
/proc/meminfo: memFree=1133264/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=4936 CPUtime=0.05
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 929 656 0 0 5 0 0 0 17 0 1 0 59767739 5054464 560 996147200 134512640 135215973 4294956320 18446744073709551615 4158960021 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 1234 560 408 171 0 159 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 4936

[startup+0.101853 s]
/proc/loadavg: 2.00 1.99 1.99 4/83 13318
/proc/meminfo: memFree=1133264/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=5068 CPUtime=0.08
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 951 656 0 0 8 0 0 0 17 0 1 0 59767739 5189632 582 996147200 134512640 135215973 4294956320 18446744073709551615 10860155 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 1267 582 408 171 0 192 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5068

[startup+0.301893 s]
/proc/loadavg: 2.00 1.99 1.99 4/83 13318
/proc/meminfo: memFree=1133264/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=5456 CPUtime=0.28
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 1061 656 0 0 28 0 0 0 19 0 1 0 59767739 5586944 692 996147200 134512640 135215973 4294956320 18446744073709551615 134585794 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 1364 692 408 171 0 289 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5456

[startup+0.701972 s]
/proc/loadavg: 2.00 1.99 1.99 4/83 13318
/proc/meminfo: memFree=1133264/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=6244 CPUtime=0.68
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 1261 656 0 0 68 0 0 0 23 0 1 0 59767739 6393856 892 996147200 134512640 135215973 4294956320 18446744073709551615 134638036 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 1561 892 408 171 0 486 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6244

[startup+1.50113 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1130504/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=8084 CPUtime=1.49
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 1704 656 0 0 148 1 0 0 25 0 1 0 59767739 8278016 1335 996147200 134512640 135215973 4294956320 18446744073709551615 4158960150 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 2021 1335 408 171 0 946 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 8084

[startup+3.10144 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1128072/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=11216 CPUtime=3.08
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 2534 656 0 0 307 1 0 0 25 0 1 0 59767739 11485184 2132 996147200 134512640 135215973 4294956320 18446744073709551615 134902135 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 2804 2132 408 171 0 1729 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 11216

[startup+6.30107 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1121480/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=17756 CPUtime=6.28
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 4205 656 0 0 626 2 0 0 25 0 1 0 59767739 18182144 3738 996147200 134512640 135215973 4294956320 18446744073709551615 134590086 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 4439 3738 408 171 0 3364 0
Current children cumulated CPU time (s) 6.28
Current children cumulated vsize (KiB) 17756

[startup+12.7013 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1108616/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=29932 CPUtime=12.67
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 7381 656 0 0 1263 4 0 0 25 0 1 0 59767739 30650368 6785 996147200 134512640 135215973 4294956320 18446744073709551615 134590245 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 7483 6785 408 171 0 6408 0
Current children cumulated CPU time (s) 12.67
Current children cumulated vsize (KiB) 29932

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

[startup+14.3067 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1104840/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=33584 CPUtime=14.29
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 8334 656 0 0 1424 5 0 0 25 0 1 0 59767739 34390016 7481 996147200 134512640 135215973 4294956320 18446744073709551615 134676115 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 8396 7481 408 171 0 7321 0
Current children cumulated CPU time (s) 14.29
Current children cumulated vsize (KiB) 33584

[startup+15.902 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1102472/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=36836 CPUtime=15.88
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 9175 656 0 0 1583 5 0 0 25 0 1 0 59767739 37720064 8289 996147200 134512640 135215973 4294956320 18446744073709551615 134585720 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 9209 8289 408 171 0 8134 0
Current children cumulated CPU time (s) 15.88
Current children cumulated vsize (KiB) 36836

[startup+16.7011 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1100616/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=38156 CPUtime=16.68
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 9513 656 0 0 1663 5 0 0 25 0 1 0 59767739 39071744 8627 996147200 134512640 135215973 4294956320 18446744073709551615 134585720 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 9539 8627 408 171 0 8464 0
Current children cumulated CPU time (s) 16.68
Current children cumulated vsize (KiB) 38156

[startup+17.1012 s]
/proc/loadavg: 2.00 1.99 1.99 3/84 13323
/proc/meminfo: memFree=1100616/2055920 swapFree=4192812/4192956
[pid=13318] ppid=13316 vsize=38544 CPUtime=17.08
/proc/13318/stat : 13318 (pcs.big) R 13316 13318 13195 0 -1 4194304 9686 656 0 0 1703 5 0 0 25 0 1 0 59767739 39469056 8765 996147200 134512640 135215973 4294956320 18446744073709551615 134532684 0 0 4096 0 0 0 0 17 0 0 0
/proc/13318/statm: 9636 8765 408 171 0 8561 0
Current children cumulated CPU time (s) 17.08
Current children cumulated vsize (KiB) 38544

Child status: 0
Real time (s): 17.1571
CPU time (s): 17.1464
CPU user time (s): 17.0834
CPU system time (s): 0.06299
CPU usage (%): 99.9376
Max. virtual memory (cumulated for all children) (KiB): 38544

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 17.0834
system time used= 0.06299
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 10345
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= 15
involuntary context switches= 413

runsolver used 0.018997 second user time and 0.053991 second system time

The end

Launcher Data 

Begin job on node77 at 2009-07-16 08:50:25
IDJOB=2086971
IDBENCH=58670
IDSOLVER=733
FILE ID=node77/2086971-1247727025
PBS_JOBID= 9521566
Free space on /tmp= 66164 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/langford4/normalized-langford-4-12.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2086971-1247727025/watcher-2086971-1247727025 -o /tmp/evaluation-result-2086971-1247727025/solver-2086971-1247727025 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 5107252 HOME/instance-2086971-1247727025.xml

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

MD5SUM BENCH= fb983333e3cbdf7d1c06cbf488766133
RANDOM SEED=5107252

node77.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		: 3000.256
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		: 3000.256
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1133744 kB
Buffers:         88984 kB
Cached:         661532 kB
SwapCached:          0 kB
Active:         292324 kB
Inactive:       535116 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1133744 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1896 kB
Writeback:           0 kB
Mapped:          97372 kB
Slab:            79828 kB
Committed_AS:   580012 kB
PageTables:       1948 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= 66164 MiB
End job on node77 at 2009-07-16 08:50:42