Trace number 2086950

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-restart 0.3.2UNSAT 5.72113 5.78623

DiagnosticValue
ASSIGNMENTS1134

General information on the benchmark

Namecsp/langford4/
normalized-langford-4-11.xml
MD5SUM7a45128bc53de7416b9c9029d3cffa95
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 benchmark0.217966
Satisfiable
(Un)Satisfiability was proved
Number of variables44
Number of constraints979
Maximum constraint arity2
Maximum domain size44
Number of constraints which are defined in extension0
Number of constraints which are defined in intension979
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
0.00/0.02	c Seed is 1842863545
0.00/0.02	c Constructing HOME/instance-2086950-1247727016.xml 
0.00/0.06	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,V0)
0.00/0.06	c  with 980 constraints
0.00/0.06	c Solving 1134 backtracks 8 restarts
5.62/5.78	s UNSATISFIABLE
5.62/5.78	d ASSIGNMENTS 1134

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-2086950-1247727016/watcher-2086950-1247727016 -o /tmp/evaluation-result-2086950-1247727016/solver-2086950-1247727016 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1842863545 HOME/instance-2086950-1247727016.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: 2.08 2.06 2.02 4/81 12758
/proc/meminfo: memFree=1353168/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=5356 CPUtime=0
/proc/12758/stat : 12758 (pcssolve) R 12756 12758 12572 0 -1 4194304 290 0 0 0 0 0 0 0 21 0 1 0 59768251 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 227848809119 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/12758/statm: 1339 241 200 169 0 50 0
[pid=12759] ppid=12758 vsize=1332 CPUtime=0
/proc/12759/stat : 12759 (fgrep) R 12758 12758 12572 0 -1 4194304 55 0 0 0 0 0 0 0 22 0 1 0 59768252 1363968 33 996147200 4194304 4274172 548682068976 18446744073709551615 227846190473 0 0 4096 0 0 0 0 17 1 0 0
/proc/12759/statm: 333 33 25 19 0 4 0
[pid=12760] ppid=12758 vsize=5356 CPUtime=0
/proc/12760/stat : 12760 (pcssolve) R 12758 12758 12572 0 -1 4194368 0 0 0 0 0 0 0 0 21 0 1 0 59768252 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 227848809119 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/12760/statm: 1339 241 200 169 0 50 0

[startup+0.065042 s]
/proc/loadavg: 2.08 2.06 2.02 4/81 12758
/proc/meminfo: memFree=1353168/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=4772 CPUtime=0.03
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 880 656 0 0 3 0 0 0 23 0 1 0 59768251 4886528 511 996147200 134512640 135215973 4294956304 18446744073709551615 134597308 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 1193 511 406 171 0 118 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 4772

[startup+0.101044 s]
/proc/loadavg: 2.08 2.06 2.02 4/81 12758
/proc/meminfo: memFree=1353168/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=4904 CPUtime=0.07
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 925 656 0 0 7 0 0 0 23 0 1 0 59768251 5021696 556 996147200 134512640 135215973 4294956304 18446744073709551615 4158960033 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 1226 556 408 171 0 151 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 4904

[startup+0.301063 s]
/proc/loadavg: 2.08 2.06 2.02 4/81 12758
/proc/meminfo: memFree=1353168/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=5316 CPUtime=0.27
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 1006 656 0 0 27 0 0 0 25 0 1 0 59768251 5443584 637 996147200 134512640 135215973 4294956304 18446744073709551615 4158960014 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 1329 637 408 171 0 254 0
Current children cumulated CPU time (s) 0.27
Current children cumulated vsize (KiB) 5316

[startup+0.701103 s]
/proc/loadavg: 2.08 2.06 2.02 4/81 12758
/proc/meminfo: memFree=1353168/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=6020 CPUtime=0.67
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 1182 656 0 0 67 0 0 0 25 0 1 0 59768251 6164480 813 996147200 134512640 135215973 4294956304 18446744073709551615 134533031 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 1505 813 408 171 0 430 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 6020

[startup+1.50118 s]
/proc/loadavg: 2.08 2.06 2.02 3/82 12763
/proc/meminfo: memFree=1350856/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=7320 CPUtime=1.46
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 1535 656 0 0 145 1 0 0 25 0 1 0 59768251 7495680 1166 996147200 134512640 135215973 4294956304 18446744073709551615 8302309 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 1830 1166 408 171 0 755 0
Current children cumulated CPU time (s) 1.46
Current children cumulated vsize (KiB) 7320

[startup+3.10133 s]
/proc/loadavg: 2.08 2.06 2.02 3/82 12763
/proc/meminfo: memFree=1348680/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=10196 CPUtime=3.05
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 2265 656 0 0 304 1 0 0 25 0 1 0 59768251 10440704 1863 996147200 134512640 135215973 4294956304 18446744073709551615 134598512 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 2549 1863 408 171 0 1474 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 10196

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

[startup+4.70249 s]
/proc/loadavg: 2.08 2.06 2.02 3/82 12763
/proc/meminfo: memFree=1344968/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=12784 CPUtime=4.63
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 2959 656 0 0 461 2 0 0 25 0 1 0 59768251 13090816 2492 996147200 134512640 135215973 4294956304 18446744073709551615 134983164 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 3196 2492 408 171 0 2121 0
Current children cumulated CPU time (s) 4.63
Current children cumulated vsize (KiB) 12784

[startup+5.50657 s]
/proc/loadavg: 2.07 2.06 2.02 4/82 12763
/proc/meminfo: memFree=1343048/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=14340 CPUtime=5.43
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 3329 656 0 0 541 2 0 0 25 0 1 0 59768251 14684160 2862 996147200 134512640 135215973 4294956304 18446744073709551615 134533117 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 3585 2862 408 171 0 2510 0
Current children cumulated CPU time (s) 5.43
Current children cumulated vsize (KiB) 14340

[startup+5.70158 s]
/proc/loadavg: 2.07 2.06 2.02 4/82 12763
/proc/meminfo: memFree=1343048/2055920 swapFree=4192812/4192956
[pid=12758] ppid=12756 vsize=14604 CPUtime=5.62
/proc/12758/stat : 12758 (pcs.big) R 12756 12758 12572 0 -1 4194304 3405 656 0 0 560 2 0 0 25 0 1 0 59768251 14954496 2938 996147200 134512640 135215973 4294956304 18446744073709551615 134926987 0 0 4096 0 0 0 0 17 1 0 0
/proc/12758/statm: 3651 2938 408 171 0 2576 0
Current children cumulated CPU time (s) 5.62
Current children cumulated vsize (KiB) 14604

Child status: 0
Real time (s): 5.78623
CPU time (s): 5.72113
CPU user time (s): 5.68713
CPU system time (s): 0.033994
CPU usage (%): 98.8749
Max. virtual memory (cumulated for all children) (KiB): 14604

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 5.68713
system time used= 0.033994
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4092
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= 253

runsolver used 0.018997 second user time and 0.016997 second system time

The end

Launcher Data 

Begin job on node18 at 2009-07-16 08:50:16
IDJOB=2086950
IDBENCH=58665
IDSOLVER=734
FILE ID=node18/2086950-1247727016
PBS_JOBID= 9521565
Free space on /tmp= 66312 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/langford4/normalized-langford-4-11.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2086950-1247727016/watcher-2086950-1247727016 -o /tmp/evaluation-result-2086950-1247727016/solver-2086950-1247727016 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1842863545 HOME/instance-2086950-1247727016.xml

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

MD5SUM BENCH= 7a45128bc53de7416b9c9029d3cffa95
RANDOM SEED=1842863545

node18.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		: 3000.243
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		: 3000.243
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:       1353648 kB
Buffers:         89244 kB
Cached:         374856 kB
SwapCached:          0 kB
Active:         244272 kB
Inactive:       378208 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1353648 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1876 kB
Writeback:           0 kB
Mapped:         178812 kB
Slab:            64732 kB
Committed_AS:   694044 kB
PageTables:       2092 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= 66312 MiB
End job on node18 at 2009-07-16 08:50:22