Trace number 2086972

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 19.0141 19.1008

DiagnosticValue
ASSIGNMENTS3684

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
0.00/0.01	c Seed is 1516587034
0.00/0.01	c Constructing HOME/instance-2086972-1247727025.xml 
0.00/0.05	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)
0.00/0.05	c  with 1165 constraints
0.00/0.05	c Solving 3684 backtracks 11 restarts
18.90/19.09	s UNSATISFIABLE
18.90/19.09	d ASSIGNMENTS 3684

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-2086972-1247727025/watcher-2086972-1247727025 -o /tmp/evaluation-result-2086972-1247727025/solver-2086972-1247727025 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1516587034 HOME/instance-2086972-1247727025.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: 2.22 2.24 2.13 4/82 15768
/proc/meminfo: memFree=1356888/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=5356 CPUtime=0
/proc/15768/stat : 15768 (pcssolve) S 15766 15768 15086 0 -1 4194304 305 155 0 0 0 0 0 0 20 0 1 0 59767857 5484544 242 996147200 4194304 4889804 548682068800 18446744073709551615 214945030980 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/15768/statm: 1339 242 201 169 0 50 0
[pid=15770] ppid=15768 vsize=0 CPUtime=0
/proc/15770/stat : 15770 (grep) R 15768 15768 15086 0 -1 4194308 162 0 0 0 0 0 0 0 22 0 1 0 59767858 0 0 996147200 0 0 0 0 0 0 0 4096 0 0 0 0 17 1 0 0
/proc/15770/statm: 0 0 0 0 0 0 0

[startup+0.0567799 s]
/proc/loadavg: 2.22 2.24 2.13 4/82 15768
/proc/meminfo: memFree=1356888/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=4804 CPUtime=0.03
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 885 656 0 0 3 0 0 0 24 0 1 0 59767857 4919296 516 996147200 134512640 135215973 4294956304 18446744073709551615 4158960056 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 1201 516 405 171 0 126 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 4804

[startup+0.101783 s]
/proc/loadavg: 2.22 2.24 2.13 4/82 15768
/proc/meminfo: memFree=1356888/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=5068 CPUtime=0.08
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 949 656 0 0 8 0 0 0 24 0 1 0 59767857 5189632 580 996147200 134512640 135215973 4294956304 18446744073709551615 134599868 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 1267 580 408 171 0 192 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5068

[startup+0.30181 s]
/proc/loadavg: 2.22 2.24 2.13 4/82 15768
/proc/meminfo: memFree=1356888/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=5456 CPUtime=0.28
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 1065 656 0 0 28 0 0 0 25 0 1 0 59767857 5586944 696 996147200 134512640 135215973 4294956304 18446744073709551615 134597941 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 1364 696 408 171 0 289 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5456

[startup+0.701854 s]
/proc/loadavg: 2.22 2.24 2.13 4/82 15768
/proc/meminfo: memFree=1356888/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=6136 CPUtime=0.68
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 1243 656 0 0 68 0 0 0 25 0 1 0 59767857 6283264 874 996147200 134512640 135215973 4294956304 18446744073709551615 4158960610 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 1534 874 408 171 0 459 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6136

[startup+1.50195 s]
/proc/loadavg: 2.22 2.24 2.13 3/83 15773
/proc/meminfo: memFree=1354192/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=7828 CPUtime=1.48
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 1662 656 0 0 147 1 0 0 25 0 1 0 59767857 8015872 1293 996147200 134512640 135215973 4294956304 18446744073709551615 134741611 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 1957 1293 408 171 0 882 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 7828

[startup+3.10113 s]
/proc/loadavg: 2.22 2.24 2.13 3/83 15773
/proc/meminfo: memFree=1351632/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=11356 CPUtime=3.07
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 2553 656 0 0 306 1 0 0 25 0 1 0 59767857 11628544 2151 996147200 134512640 135215973 4294956304 18446744073709551615 134934361 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 2839 2151 408 171 0 1764 0
Current children cumulated CPU time (s) 3.07
Current children cumulated vsize (KiB) 11356

[startup+6.30249 s]
/proc/loadavg: 2.20 2.23 2.13 3/83 15773
/proc/meminfo: memFree=1345040/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=17624 CPUtime=6.26
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 4171 656 0 0 624 2 0 0 25 0 1 0 59767857 18046976 3704 996147200 134512640 135215973 4294956304 18446744073709551615 134587951 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 4406 3704 408 171 0 3331 0
Current children cumulated CPU time (s) 6.26
Current children cumulated vsize (KiB) 17624

[startup+12.7012 s]
/proc/loadavg: 2.18 2.23 2.13 3/83 15773
/proc/meminfo: memFree=1332248/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=29928 CPUtime=12.62
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 7379 656 0 0 1259 3 0 0 25 0 1 0 59767857 30646272 6783 996147200 134512640 135215973 4294956304 18446744073709551615 4158960879 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 7482 6783 408 171 0 6407 0
Current children cumulated CPU time (s) 12.62
Current children cumulated vsize (KiB) 29928

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

[startup+16.2016 s]
/proc/loadavg: 2.17 2.22 2.12 3/83 15773
/proc/meminfo: memFree=1325336/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=37616 CPUtime=16.11
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 9376 656 0 0 1606 5 0 0 25 0 1 0 59767857 38518784 8490 996147200 134512640 135215973 4294956304 18446744073709551615 3031109 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 9404 8490 408 171 0 8329 0
Current children cumulated CPU time (s) 16.11
Current children cumulated vsize (KiB) 37616

[startup+17.8018 s]
/proc/loadavg: 2.17 2.22 2.12 3/83 15773
/proc/meminfo: memFree=1321368/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=40376 CPUtime=17.7
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 10099 656 0 0 1765 5 0 0 25 0 1 0 59767857 41345024 9213 996147200 134512640 135215973 4294956304 18446744073709551615 134590052 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 10094 9213 408 171 0 9019 0
Current children cumulated CPU time (s) 17.7
Current children cumulated vsize (KiB) 40376

[startup+18.6019 s]
/proc/loadavg: 2.17 2.22 2.12 3/83 15773
/proc/meminfo: memFree=1321368/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=41952 CPUtime=18.51
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 10502 656 0 0 1845 6 0 0 25 0 1 0 59767857 42958848 9616 996147200 134512640 135215973 4294956304 18446744073709551615 4158961156 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 10488 9616 408 171 0 9413 0
Current children cumulated CPU time (s) 18.51
Current children cumulated vsize (KiB) 41952

[startup+19.0069 s]
/proc/loadavg: 2.17 2.22 2.12 3/83 15773
/proc/meminfo: memFree=1319192/2055920 swapFree=4192812/4192956
[pid=15768] ppid=15766 vsize=42612 CPUtime=18.9
/proc/15768/stat : 15768 (pcs.big) R 15766 15768 15086 0 -1 4194304 10681 656 0 0 1884 6 0 0 25 0 1 0 59767857 43634688 9795 996147200 134512640 135215973 4294956304 18446744073709551615 134583485 0 0 4096 0 0 0 0 17 0 0 0
/proc/15768/statm: 10653 9795 408 171 0 9578 0
Current children cumulated CPU time (s) 18.9
Current children cumulated vsize (KiB) 42612

Child status: 0
Real time (s): 19.1008
CPU time (s): 19.0141
CPU user time (s): 18.9371
CPU system time (s): 0.076988
CPU usage (%): 99.5463
Max. virtual memory (cumulated for all children) (KiB): 42612

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 18.9371
system time used= 0.076988
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 11350
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= 277

runsolver used 0.021996 second user time and 0.06499 second system time

The end

Launcher Data 

Begin job on node85 at 2009-07-16 08:50:25
IDJOB=2086972
IDBENCH=58670
IDSOLVER=734
FILE ID=node85/2086972-1247727025
PBS_JOBID= 9521614
Free space on /tmp= 126540 MiB

SOLVER NAME= pcs-restart 0.2.restart
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-2086972-1247727025/watcher-2086972-1247727025 -o /tmp/evaluation-result-2086972-1247727025/solver-2086972-1247727025 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1516587034 HOME/instance-2086972-1247727025.xml

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

MD5SUM BENCH= fb983333e3cbdf7d1c06cbf488766133
RANDOM SEED=1516587034

node85.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		: 3000.220
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		: 3000.220
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:       1357304 kB
Buffers:         92940 kB
Cached:         457996 kB
SwapCached:          0 kB
Active:         278420 kB
Inactive:       346092 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1357304 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2284 kB
Writeback:           0 kB
Mapped:          93824 kB
Slab:            59168 kB
Committed_AS:   548748 kB
PageTables:       1944 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= 126536 MiB
End job on node85 at 2009-07-16 08:50:44