Trace number 237793

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, and are wall clock time (not CPU 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
VALCSP 3.0Wrong Cert. 0.008997 0.117273

DiagnosticValue
CHECKS14182
NODES64

General information on the benchmark

Namehaystacks/
haystacks_08.xml
MD5SUMc002d750eb21535fad591656d828639e
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 benchmark0.131979
SatisfiableNO
(Un)Satisfiability was proved
Number of variables64
Number of constraints231
Maximum constraint arity2
Maximum domain size8
Number of constraints which are defined in extension0
Number of constraints which are defined in intension231
Global constraints used (with number of constraints)

Solver Data (download as text)

0.00	s SATISFIABLE
0.00	v 0 0 0 0 1 3 4 1 0 6 1 1 5 0 1 2 0 4 2 2 3 1 2 2 4 3 4 1 2 4 3 2 5 3 4 2 4 3 3 0 5 6 5 5 7 5 5 7 6 6 6 3 6 6 4 7 7 1 7 5 6 7 7 7 
0.00	d CHECKS 14182
0.00	d NODES 64
0.00

Verifier Data (download as text)

ERROR: constraint C31 is unsatisfied
Predicate is 
((parm[0]!=parm[1])&&((parm[0]+parm[1])>=2))
parm[0]=0
parm[1]=1

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node16/watcher-237793-1168703512 -o ROOT/results/node16/solver-237793-1168703512 -C 1800 -M 900 /tmp/evaluation/237793-1168703512/VALCSP /tmp/evaluation/237793-1168703512/unknown.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 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

/proc/loadavg: 1.53 1.90 1.79 4/81 19135
/proc/meminfo: memFree=1462736/2055920 swapFree=4191880/4192956
[pid=19134] ppid=19132 vsize=1600 CPUtime=0
/proc/19134/stat : 19134 (VALCSP) R 19132 19134 16107 0 -1 4194304 147 0 0 0 0 0 0 0 18 0 1 0 218746243 1638400 125 18446744073709551615 134512640 134548440 4294956688 18446744073709551615 7640699 0 0 4096 0 0 0 0 17 1 0 0
/proc/19134/statm: 400 125 64 8 0 72 0

[startup+0.106831 s]
/proc/loadavg: 1.53 1.90 1.79 4/81 19135
/proc/meminfo: memFree=1462736/2055920 swapFree=4191880/4192956
[pid=19134] ppid=19132 vsize=0 CPUtime=0
/proc/19134/stat : 19134 (VALCSP) D 19132 19134 16107 0 -1 4194308 219 0 0 0 0 0 0 0 18 0 1 0 218746243 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 18446744072100051646 0 0 17 1 0 0
/proc/19134/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 0

Child status: 0
Real time (s): 0.117273
CPU time (s): 0.008997
CPU user time (s): 0.007998
CPU system time (s): 0.000999
CPU usage (%): 7.67184
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.007998
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 219
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= 8
involuntary context switches= 0

runsolver used 0.002999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node16 on Sat Jan 13 15:51:52 UTC 2007


IDJOB= 237793
IDBENCH= 6963
IDSOLVER= 79
FILE ID= node16/237793-1168703512

PBS_JOBID= 3546946

Free space on /tmp= 66554 MiB

SOLVER NAME= VALCSP 3.0
BENCH NAME= HOME/pub/bench/CPAI06/haystacks/haystacks_08.xml
COMMAND LINE= /tmp/evaluation/237793-1168703512/VALCSP /tmp/evaluation/237793-1168703512/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node16/watcher-237793-1168703512 -o ROOT/results/node16/solver-237793-1168703512 -C 1800 -M 900  /tmp/evaluation/237793-1168703512/VALCSP /tmp/evaluation/237793-1168703512/unknown.xml

META MD5SUM SOLVER= 6fc756be3a7e45a17a81a19ce431bc48
MD5SUM BENCH=  c002d750eb21535fad591656d828639e

RANDOM SEED= 99856946

TIME LIMIT= 1800 seconds

MEMORY LIMIT= 900 MiB


/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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1463216 kB
Buffers:         72772 kB
Cached:         413864 kB
SwapCached:        448 kB
Active:         214944 kB
Inactive:       320484 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1463216 kB
SwapTotal:     4192956 kB
SwapFree:      4191880 kB
Dirty:           12044 kB
Writeback:           0 kB
Mapped:          67028 kB
Slab:            42452 kB
Committed_AS:  6385128 kB
PageTables:       2192 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= 66554 MiB



End job on node16 on Sat Jan 13 15:51:54 UTC 2007