Trace number 2086949

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 4.72428 4.73168

DiagnosticValue
ASSIGNMENTS980

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
0.18/0.20	c Seed is 1039724541
0.18/0.20	c Constructing HOME/instance-2086949-1247727015.xml 
0.18/0.20	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)
0.18/0.20	c  with 980 constraints
0.18/0.20	c Solving 980 backtracks 8 restarts
4.68/4.72	s UNSATISFIABLE
4.68/4.72	d ASSIGNMENTS 980

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-2086949-1247727015/watcher-2086949-1247727015 -o /tmp/evaluation-result-2086949-1247727015/solver-2086949-1247727015 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1039724541 HOME/instance-2086949-1247727015.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: 2.26 2.24 2.13 4/82 15695
/proc/meminfo: memFree=1357336/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=5356 CPUtime=0
/proc/15695/stat : 15695 (pcssolve) S 15693 15695 15086 0 -1 4194304 305 0 0 0 0 0 0 0 18 0 1 0 59766805 5484544 242 996147200 4194304 4889804 548682068800 18446744073709551615 214945030980 0 65536 4100 65538 18446744071563356171 0 0 17 0 0 0
/proc/15695/statm: 1339 242 201 169 0 50 0
[pid=15696] ppid=15695 vsize=5356 CPUtime=0
/proc/15696/stat : 15696 (pcssolve) R 15695 15695 15086 0 -1 4194368 22 0 0 0 0 0 0 0 19 0 1 0 59766806 5484544 243 996147200 4194304 4889804 548682068800 18446744073709551615 214945033511 0 0 4096 0 0 0 0 17 1 0 0
/proc/15696/statm: 1339 243 202 169 0 50 0
[pid=15697] ppid=15695 vsize=5356 CPUtime=0
/proc/15697/stat : 15697 (pcssolve) R 15695 15695 15086 0 -1 4194368 22 0 0 0 0 0 0 0 20 0 1 0 59766806 5484544 244 996147200 4194304 4889804 548682068800 18446744073709551615 214945033511 0 0 4096 0 0 0 0 17 1 0 0
/proc/15697/statm: 1339 244 203 169 0 50 0

[startup+0.0396299 s]
/proc/loadavg: 2.26 2.24 2.13 4/82 15695
/proc/meminfo: memFree=1357336/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=4624 CPUtime=0.02
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 838 656 0 0 2 0 0 0 18 0 1 0 59766805 4734976 469 996147200 134512640 135215973 4294956304 18446744073709551615 4159198437 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 1156 469 384 171 0 81 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4624

[startup+0.101635 s]
/proc/loadavg: 2.26 2.24 2.13 4/82 15695
/proc/meminfo: memFree=1357336/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=4904 CPUtime=0.08
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 934 656 0 0 8 0 0 0 18 0 1 0 59766805 5021696 565 996147200 134512640 135215973 4294956304 18446744073709551615 134591291 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 1226 565 408 171 0 151 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4904

[startup+0.301659 s]
/proc/loadavg: 2.26 2.24 2.13 4/82 15695
/proc/meminfo: memFree=1357336/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=5324 CPUtime=0.28
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 1025 656 0 0 28 0 0 0 19 0 1 0 59766805 5451776 656 996147200 134512640 135215973 4294956304 18446744073709551615 134902469 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 1331 656 408 171 0 256 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5324

[startup+0.701707 s]
/proc/loadavg: 2.26 2.24 2.13 4/82 15695
/proc/meminfo: memFree=1357336/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=6104 CPUtime=0.68
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 1216 656 0 0 68 0 0 0 23 0 1 0 59766805 6250496 847 996147200 134512640 135215973 4294956304 18446744073709551615 134598210 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 1526 847 408 171 0 451 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6104

[startup+1.5018 s]
/proc/loadavg: 2.26 2.24 2.13 3/83 15700
/proc/meminfo: memFree=1354960/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=7532 CPUtime=1.48
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 1568 656 0 0 148 0 0 0 25 0 1 0 59766805 7712768 1199 996147200 134512640 135215973 4294956304 18446744073709551615 4158960000 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 1883 1199 408 171 0 808 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 7532

[startup+3.10198 s]
/proc/loadavg: 2.26 2.24 2.13 3/83 15700
/proc/meminfo: memFree=1352848/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=10368 CPUtime=3.08
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 2328 656 0 0 308 0 0 0 25 0 1 0 59766805 10616832 1926 996147200 134512640 135215973 4294956304 18446744073709551615 134586829 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 2592 1926 408 171 0 1517 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 10368

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

[startup+3.90207 s]
/proc/loadavg: 2.26 2.24 2.13 3/83 15700
/proc/meminfo: memFree=1350736/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=12044 CPUtime=3.88
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 2764 656 0 0 387 1 0 0 25 0 1 0 59766805 12333056 2297 996147200 134512640 135215973 4294956304 18446744073709551615 134599825 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 3011 2297 408 171 0 1936 0
Current children cumulated CPU time (s) 3.88
Current children cumulated vsize (KiB) 12044

[startup+4.30111 s]
/proc/loadavg: 2.26 2.24 2.13 3/83 15700
/proc/meminfo: memFree=1348816/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=12684 CPUtime=4.29
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 2935 656 0 0 428 1 0 0 25 0 1 0 59766805 12988416 2468 996147200 134512640 135215973 4294956304 18446744073709551615 3067526 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 3171 2468 408 171 0 2096 0
Current children cumulated CPU time (s) 4.29
Current children cumulated vsize (KiB) 12684

[startup+4.70116 s]
/proc/loadavg: 2.26 2.24 2.13 3/83 15700
/proc/meminfo: memFree=1348816/2055920 swapFree=4192812/4192956
[pid=15695] ppid=15693 vsize=13444 CPUtime=4.68
/proc/15695/stat : 15695 (pcs.big) R 15693 15695 15086 0 -1 4194304 3112 656 0 0 467 1 0 0 25 0 1 0 59766805 13766656 2645 996147200 134512640 135215973 4294956304 18446744073709551615 4158960879 0 0 4096 0 0 0 0 17 0 0 0
/proc/15695/statm: 3361 2645 408 171 0 2286 0
Current children cumulated CPU time (s) 4.68
Current children cumulated vsize (KiB) 13444

Child status: 0
Real time (s): 4.73168
CPU time (s): 4.72428
CPU user time (s): 4.70528
CPU system time (s): 0.018997
CPU usage (%): 99.8436
Max. virtual memory (cumulated for all children) (KiB): 13444

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.70528
system time used= 0.018997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3780
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= 20
involuntary context switches= 31

runsolver used 0.006998 second user time and 0.020996 second system time

The end

Launcher Data 

Begin job on node85 at 2009-07-16 08:50:15
IDJOB=2086949
IDBENCH=58665
IDSOLVER=733
FILE ID=node85/2086949-1247727015
PBS_JOBID= 9521614
Free space on /tmp= 126540 MiB

SOLVER NAME= pcs 0.2
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-2086949-1247727015/watcher-2086949-1247727015 -o /tmp/evaluation-result-2086949-1247727015/solver-2086949-1247727015 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1039724541 HOME/instance-2086949-1247727015.xml

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

MD5SUM BENCH= 7a45128bc53de7416b9c9029d3cffa95
RANDOM SEED=1039724541

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:       1357816 kB
Buffers:         92740 kB
Cached:         457992 kB
SwapCached:          0 kB
Active:         278188 kB
Inactive:       346064 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1357816 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1844 kB
Writeback:           0 kB
Mapped:          93824 kB
Slab:            59028 kB
Committed_AS:   548688 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 08:50:20