Trace number 2082220

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 40.9588 41.1495

DiagnosticValue
ASSIGNMENTS45572

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-10.xml
MD5SUMd438b1553ec5710c6f35b3a8e61b7288
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 benchmark0.887865
Satisfiable
(Un)Satisfiability was proved
Number of variables20
Number of constraints200
Maximum constraint arity2
Maximum domain size20
Number of constraints which are defined in extension0
Number of constraints which are defined in intension200
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c has operations which may create big domains
0.00/0.01	c big-domain mode
0.17/0.23	c Seed is 488694951
0.17/0.23	c Constructing HOME/instance-2082220-1247720819.xml 
0.17/0.23	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V18,V19,V0)
0.17/0.23	c  with 201 constraints
0.17/0.23	c Solving 45572 backtracks 17 restarts
40.89/41.13	s UNSATISFIABLE
40.89/41.13	d ASSIGNMENTS 45572

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-2082220-1247720819/watcher-2082220-1247720819 -o /tmp/evaluation-result-2082220-1247720819/solver-2082220-1247720819 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 488694951 HOME/instance-2082220-1247720819.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 2.07 4/72 18066
/proc/meminfo: memFree=1460856/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=18576 CPUtime=0
/proc/18066/stat : 18066 (runsolver) R 18064 18066 16245 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 59146124 19021824 284 996147200 4194304 4302564 548682068496 18446744073709551615 213116316967 0 0 4096 24578 0 0 0 17 1 0 0
/proc/18066/statm: 4644 284 249 26 0 2626 0

[startup+0.192314 s]
/proc/loadavg: 2.08 2.06 2.07 4/72 18066
/proc/meminfo: memFree=1460856/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=4892 CPUtime=0.16
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 958 817 0 0 16 0 0 0 18 0 1 0 59146124 5009408 567 996147200 134512640 135215973 4294956304 18446744073709551615 134923891 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 1223 567 408 171 0 148 0
Current children cumulated CPU time (s) 0.16
Current children cumulated vsize (KiB) 4892

[startup+0.201305 s]
/proc/loadavg: 2.08 2.06 2.07 4/72 18066
/proc/meminfo: memFree=1460856/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=4892 CPUtime=0.17
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 964 817 0 0 17 0 0 0 18 0 1 0 59146124 5009408 573 996147200 134512640 135215973 4294956304 18446744073709551615 3602043 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 1223 573 408 171 0 148 0
Current children cumulated CPU time (s) 0.17
Current children cumulated vsize (KiB) 4892

[startup+0.301331 s]
/proc/loadavg: 2.08 2.06 2.07 4/72 18066
/proc/meminfo: memFree=1460856/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=5280 CPUtime=0.27
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 1037 817 0 0 27 0 0 0 19 0 1 0 59146124 5406720 646 996147200 134512640 135215973 4294956304 18446744073709551615 134593062 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 1320 646 408 171 0 245 0
Current children cumulated CPU time (s) 0.27
Current children cumulated vsize (KiB) 5280

[startup+0.701404 s]
/proc/loadavg: 2.08 2.06 2.07 4/72 18066
/proc/meminfo: memFree=1460856/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=6368 CPUtime=0.67
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 1296 817 0 0 67 0 0 0 23 0 1 0 59146124 6520832 905 996147200 134512640 135215973 4294956304 18446744073709551615 134617361 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 1592 905 408 171 0 517 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 6368

[startup+1.50156 s]
/proc/loadavg: 2.08 2.06 2.07 3/73 18072
/proc/meminfo: memFree=1457840/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=8176 CPUtime=1.46
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 1798 817 0 0 146 0 0 0 25 0 1 0 59146124 8372224 1374 996147200 134512640 135215973 4294956304 18446744073709551615 3602043 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 2044 1374 408 171 0 969 0
Current children cumulated CPU time (s) 1.46
Current children cumulated vsize (KiB) 8176

[startup+3.10186 s]
/proc/loadavg: 2.08 2.06 2.07 3/73 18072
/proc/meminfo: memFree=1454832/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=12212 CPUtime=3.06
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 2845 817 0 0 305 1 0 0 25 0 1 0 59146124 12505088 2356 996147200 134512640 135215973 4294956304 18446744073709551615 3602043 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 3053 2356 408 171 0 1978 0
Current children cumulated CPU time (s) 3.06
Current children cumulated vsize (KiB) 12212

[startup+6.30147 s]
/proc/loadavg: 2.07 2.06 2.07 3/73 18072
/proc/meminfo: memFree=1447152/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=19888 CPUtime=6.25
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 4888 817 0 0 623 2 0 0 25 0 1 0 59146124 20365312 4237 996147200 134512640 135215973 4294956304 18446744073709551615 134583640 0 0 4096 0 0 0 0 17 1 0 0
/proc/18066/statm: 4972 4237 408 171 0 3897 0
Current children cumulated CPU time (s) 6.25
Current children cumulated vsize (KiB) 19888

[startup+12.7017 s]
/proc/loadavg: 2.15 2.07 2.07 4/83 18154
/proc/meminfo: memFree=1580512/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=35972 CPUtime=12.61
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 9128 817 0 0 1256 5 0 0 25 0 1 0 59146124 36835328 8155 996147200 134512640 135215973 4294956304 18446744073709551615 4158960003 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 8993 8155 408 171 0 7918 0
Current children cumulated CPU time (s) 12.61
Current children cumulated vsize (KiB) 35972

[startup+25.5011 s]
/proc/loadavg: 2.11 2.07 2.07 3/82 18155
/proc/meminfo: memFree=1545832/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=68024 CPUtime=25.36
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 17642 817 0 0 2526 10 0 0 25 0 1 0 59146124 69656576 16027 996147200 134512640 135215973 4294956304 18446744073709551615 134930627 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 17006 16027 408 171 0 15931 0
Current children cumulated CPU time (s) 25.36
Current children cumulated vsize (KiB) 68024

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

[startup+25.6011 s]
/proc/loadavg: 2.11 2.07 2.07 3/82 18155
/proc/meminfo: memFree=1545832/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=68284 CPUtime=25.46
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 17706 817 0 0 2536 10 0 0 25 0 1 0 59146124 69922816 16091 996147200 134512640 135215973 4294956304 18446744073709551615 134977097 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 17071 16091 408 171 0 15996 0
Current children cumulated CPU time (s) 25.46
Current children cumulated vsize (KiB) 68284

[startup+32.0063 s]
/proc/loadavg: 2.10 2.07 2.07 3/82 18155
/proc/meminfo: memFree=1529256/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=84396 CPUtime=31.83
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 21989 817 0 0 3171 12 0 0 25 0 1 0 59146124 86421504 20117 996147200 134512640 135215973 4294956304 18446744073709551615 134583202 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 21099 20117 408 171 0 20024 0
Current children cumulated CPU time (s) 31.83
Current children cumulated vsize (KiB) 84396

[startup+35.2019 s]
/proc/loadavg: 2.10 2.06 2.07 3/82 18155
/proc/meminfo: memFree=1521640/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=91320 CPUtime=35.02
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 23812 817 0 0 3489 13 0 0 25 0 1 0 59146124 93511680 21940 996147200 134512640 135215973 4294956304 18446744073709551615 134591183 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 22830 21940 408 171 0 21755 0
Current children cumulated CPU time (s) 35.02
Current children cumulated vsize (KiB) 91320

[startup+38.4015 s]
/proc/loadavg: 2.10 2.06 2.07 3/82 18155
/proc/meminfo: memFree=1516712/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=101956 CPUtime=38.21
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 26609 817 0 0 3806 15 0 0 25 0 1 0 59146124 104402944 23712 996147200 134512640 135215973 4294956304 18446744073709551615 134533180 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 25489 23712 408 171 0 24414 0
Current children cumulated CPU time (s) 38.21
Current children cumulated vsize (KiB) 101956

[startup+40.0018 s]
/proc/loadavg: 2.09 2.06 2.07 3/82 18155
/proc/meminfo: memFree=1511912/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=105236 CPUtime=39.8
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 27485 817 0 0 3965 15 0 0 25 0 1 0 59146124 107761664 24588 996147200 134512640 135215973 4294956304 18446744073709551615 134930695 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 26309 24588 408 171 0 25234 0
Current children cumulated CPU time (s) 39.8
Current children cumulated vsize (KiB) 105236

[startup+40.807 s]
/proc/loadavg: 2.09 2.06 2.07 3/82 18155
/proc/meminfo: memFree=1509544/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=106800 CPUtime=40.59
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 27905 817 0 0 4044 15 0 0 25 0 1 0 59146124 109363200 25008 996147200 134512640 135215973 4294956304 18446744073709551615 134589769 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 26700 25008 408 171 0 25625 0
Current children cumulated CPU time (s) 40.59
Current children cumulated vsize (KiB) 106800

[startup+41.002 s]
/proc/loadavg: 2.09 2.06 2.07 3/82 18155
/proc/meminfo: memFree=1509544/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=105144 CPUtime=40.79
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 27987 817 0 0 4064 15 0 0 25 0 1 0 59146124 107667456 24732 996147200 134512640 135215973 4294956304 18446744073709551615 134532677 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 26286 24732 408 171 0 25211 0
Current children cumulated CPU time (s) 40.79
Current children cumulated vsize (KiB) 105144

[startup+41.1011 s]
/proc/loadavg: 2.09 2.06 2.07 3/82 18155
/proc/meminfo: memFree=1509544/2055920 swapFree=4192812/4192956
[pid=18066] ppid=18064 vsize=105144 CPUtime=40.89
/proc/18066/stat : 18066 (pcs.big) R 18064 18066 16245 0 -1 4194304 27987 817 0 0 4074 15 0 0 25 0 1 0 59146124 107667456 24732 996147200 134512640 135215973 4294956304 18446744073709551615 134532677 0 0 4096 0 0 0 0 17 0 0 0
/proc/18066/statm: 26286 24732 408 171 0 25211 0
Current children cumulated CPU time (s) 40.89
Current children cumulated vsize (KiB) 105144

Child status: 0
Real time (s): 41.1495
CPU time (s): 40.9588
CPU user time (s): 40.7748
CPU system time (s): 0.183972
CPU usage (%): 99.5364
Max. virtual memory (cumulated for all children) (KiB): 107064

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 40.7748
system time used= 0.183972
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 28807
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= 22
involuntary context switches= 587

runsolver used 0.041993 second user time and 0.114982 second system time

The end

Launcher Data 

Begin job on node37 at 2009-07-16 07:06:59
IDJOB=2082220
IDBENCH=57556
IDSOLVER=734
FILE ID=node37/2082220-1247720819
PBS_JOBID= 9521386
Free space on /tmp= 66396 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-10.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082220-1247720819/watcher-2082220-1247720819 -o /tmp/evaluation-result-2082220-1247720819/solver-2082220-1247720819 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 488694951 HOME/instance-2082220-1247720819.xml

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

MD5SUM BENCH= d438b1553ec5710c6f35b3a8e61b7288
RANDOM SEED=488694951

node37.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		: 3000.260
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		: 3000.260
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:       1461336 kB
Buffers:         73180 kB
Cached:         256212 kB
SwapCached:          0 kB
Active:         219104 kB
Inactive:       291408 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1461336 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2340 kB
Writeback:           0 kB
Mapped:         192612 kB
Slab:            69404 kB
Committed_AS:   710496 kB
PageTables:       2032 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= 66396 MiB
End job on node37 at 2009-07-16 07:07:41