Trace number 200416

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
SAT4JCSP-CACHED 1.7 RC BF3? (MO) 3.80042 2.45672

General information on the benchmark

NamequeensKnights/
queensKnights-15-5-add.xml
MD5SUM932f51956d211f0c2bd7b7cdf66f3696
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 benchmark0.327949
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables20
Number of constraints115
Maximum constraint arity2
Maximum domain size225
Number of constraints which are defined in extension0
Number of constraints which are defined in intension115
Global constraints used (with number of constraints)

Solver Data (download as text)

0.15	c SAT4J: a SATisfiability library for Java (c) 2004-2006 Daniel Le Berre
0.15	c This is free software under the GNU LGPL licence. See www.sat4j.org for details.
0.15	c This software uses some libraries from the Jakarta project. See jakarta.apache.org for details.
0.15	c version CSP COMPETITION BUGFIX 3 CACHED
0.15	c sun.arch.data.model	32
0.16	c java.version	1.5.0_10
0.16	c os.name	Linux
0.16	c os.version	2.6.9-22.EL.rootsmp
0.16	c os.arch	i386
0.16	c Free memory 722620888
0.16	c Max memory 723845120
0.16	c Total memory 723845120
0.16	c Number of processors 2
0.21	c --- Begin Solver configuration ---
0.21	c Stops conflict analysis at the first Unique Implication Point
0.21	c org.sat4j.minisat.constraints.MixedDataStructureWithBinary@19dfbff
0.21	c Learn all clauses as in MiniSAT
0.21	c claDecay=0.999 varDecay=0.95 conflictBoundIncFactor=1.5 initConflictBound=100 
0.21	c VSIDS like heuristics from MiniSAT using a heap
0.21	c No reason simplification
0.21	c --- End Solver configuration ---
0.21	c solving /tmp/evaluation/200416-1168142500/unknown.xml
0.21	c reading problem ... 
0.38	c reading problem named ?
0.38	c reading domains done.
0.38	c reading variables
c reading variables (20) done.
0.42	c reading predicates 
c reading relations (4) done.
0.63	c reading constraintsc starts		: 0
2.38	c conflicts		: 0
2.38	c decisions		: 0
2.38	c propagations		: 0
2.38	c inspects		: 0
2.38	c learnt literals	: 0
2.38	c learnt binary clauses	: 0
2.38	c learnt ternary clauses	: 0
2.38	c learnt clauses	: 0
2.38	c root simplifications	: 0
2.38	c removed literals (reason simplification)	: 0
2.38	c reason swapping (by a shorter reason)	: 0
2.38	c Calls to reduceDB	: 0
2.38	c speed (decisions/second)	: 0.0
2.38	c non guided choices	0
2.38	s UNKNOWN
2.38	c Total wall clock time (in seconds) : 2.164
2.38	c Total CPU time (experimental, in seconds) : 0.0

Verifier Data (download as text)

ERROR: Unexpected answer ! (SAT/UNSAT expected)
Got answer: UNKNOWN

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node41/watcher-200416-1168142500 -o ROOT/results/node41/solver-200416-1168142500 -C 1800 -M 900 java -server -Xmx700M -Xms700M -jar /tmp/evaluation/200416-1168142500/sat4jCSP-bf3-cached.jar /tmp/evaluation/200416-1168142500/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: 1.01 1.01 1.19 1/71 27766
/proc/meminfo: memFree=1507352/2055920 swapFree=4191892/4192956
[pid=27765] ppid=27763 vsize=1784 CPUtime=0
/proc/27765/stat : 27765 (java) R 27763 27765 23263 0 -1 0 149 0 0 0 0 0 0 0 20 0 1 0 162649272 1826816 121 18446744073709551615 134512640 134570532 4294956640 18446744073709551615 2397819 0 0 4096 0 0 0 0 17 1 0 0
/proc/27765/statm: 446 123 90 14 0 91 0

[startup+0.103104 s]
/proc/loadavg: 1.01 1.01 1.19 1/71 27766
/proc/meminfo: memFree=1507352/2055920 swapFree=4191892/4192956
[pid=27765] ppid=27763 vsize=901540 CPUtime=0.08
/proc/27765/stat : 27765 (java) R 27763 27765 23263 0 -1 0 3339 0 1 0 6 2 0 0 24 0 12 0 162649272 923176960 3099 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4154683490 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27765/statm: 225385 3099 1564 14 0 212109 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 901540

[startup+0.511139 s]
/proc/loadavg: 1.01 1.01 1.19 1/71 27766
/proc/meminfo: memFree=1507352/2055920 swapFree=4191892/4192956
[pid=27765] ppid=27763 vsize=906868 CPUtime=0.68
/proc/27765/stat : 27765 (java) R 27763 27765 23263 0 -1 0 6876 0 1 0 64 4 0 0 17 0 12 0 162649272 928632832 6362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/27765/statm: 226717 6362 2388 14 0 213154 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 906868

[startup+1.33421 s]
/proc/loadavg: 1.01 1.01 1.19 3/82 27779
/proc/meminfo: memFree=1484800/2055920 swapFree=4191892/4192956
[pid=27765] ppid=27763 vsize=908268 CPUtime=1.96
/proc/27765/stat : 27765 (java) R 27763 27765 23263 0 -1 0 10800 0 1 0 190 6 0 0 17 0 12 0 162649272 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/27765/statm: 227067 9423 2473 14 0 213504 0
[pid=27765/tid=27767] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27767/stat : 27767 (java) S 27763 27765 23263 0 -1 64 2 0 0 0 0 0 0 0 19 0 12 0 162649275 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27768] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27768/stat : 27768 (java) S 27763 27765 23263 0 -1 64 2 0 0 0 0 0 0 0 20 0 12 0 162649275 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 1 0 0
[pid=27765/tid=27769] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27769/stat : 27769 (java) S 27763 27765 23263 0 -1 64 6 0 0 0 0 0 0 0 17 0 12 0 162649277 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 0 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27770] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27770/stat : 27770 (java) S 27763 27765 23263 0 -1 64 8 0 0 0 0 0 0 0 22 0 12 0 162649278 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27771] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27771/stat : 27771 (java) S 27763 27765 23263 0 -1 64 4 0 0 0 0 0 0 0 23 0 12 0 162649278 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27772] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27772/stat : 27772 (java) S 27763 27765 23263 0 -1 64 0 0 0 0 0 0 0 0 24 0 12 0 162649281 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27773] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27773/stat : 27773 (java) S 27763 27765 23263 0 -1 64 1 0 0 0 0 0 0 0 15 0 12 0 162649281 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27774] ppid=27763 vsize=908268 CPUtime=0.41
/proc/27765/task/27774/stat : 27774 (java) R 27763 27765 23263 0 -1 64 607 0 0 0 41 0 0 0 16 0 12 0 162649281 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4154873416 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27775] ppid=27763 vsize=908268 CPUtime=0.55
/proc/27765/task/27775/stat : 27775 (java) R 27763 27765 23263 0 -1 64 1749 0 0 0 55 0 0 0 16 0 12 0 162649281 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4154370602 0 4 0 23759 0 0 0 -1 1 0 0
[pid=27765/tid=27776] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27776/stat : 27776 (java) S 27763 27765 23263 0 -1 64 2 0 0 0 0 0 0 0 25 0 12 0 162649281 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27777] ppid=27763 vsize=908268 CPUtime=0
/proc/27765/task/27777/stat : 27777 (java) S 27763 27765 23263 0 -1 64 1 0 0 0 0 0 0 0 15 0 12 0 162649282 930066432 9423 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 1 0 0
Current children cumulated CPU time (s) 1.96
Current children cumulated vsize (KiB) 908268



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+2.3693 s]
/proc/loadavg: 1.01 1.01 1.19 3/82 27779
/proc/meminfo: memFree=1435648/2055920 swapFree=4191892/4192956
[pid=27765] ppid=27763 vsize=921800 CPUtime=3.7
/proc/27765/stat : 27765 (java) R 27763 27765 23263 0 -1 0 23342 0 1 0 357 13 0 0 18 0 12 0 162649272 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4053869618 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27765/statm: 230450 20362 2484 14 0 216887 0
[pid=27765/tid=27767] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27767/stat : 27767 (java) S 27763 27765 23263 0 -1 64 2 0 0 0 0 0 0 0 19 0 12 0 162649275 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27768] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27768/stat : 27768 (java) S 27763 27765 23263 0 -1 64 2 0 0 0 0 0 0 0 20 0 12 0 162649275 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 1 0 0
[pid=27765/tid=27769] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27769/stat : 27769 (java) S 27763 27765 23263 0 -1 64 7 0 0 0 0 0 0 0 17 0 12 0 162649277 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 0 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27770] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27770/stat : 27770 (java) S 27763 27765 23263 0 -1 64 8 0 0 0 0 0 0 0 22 0 12 0 162649278 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27771] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27771/stat : 27771 (java) S 27763 27765 23263 0 -1 64 4 0 0 0 0 0 0 0 23 0 12 0 162649278 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27772] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27772/stat : 27772 (java) S 27763 27765 23263 0 -1 64 0 0 0 0 0 0 0 0 24 0 12 0 162649281 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27773] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27773/stat : 27773 (java) S 27763 27765 23263 0 -1 64 1 0 0 0 0 0 0 0 16 0 12 0 162649281 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27774] ppid=27763 vsize=921800 CPUtime=0.47
/proc/27765/task/27774/stat : 27774 (java) S 27763 27765 23263 0 -1 64 662 0 0 0 47 0 0 0 16 0 12 0 162649281 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27775] ppid=27763 vsize=921800 CPUtime=1.24
/proc/27765/task/27775/stat : 27775 (java) R 27763 27765 23263 0 -1 64 6498 0 0 0 122 2 0 0 20 0 12 0 162649281 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4152640504 0 4 0 23759 0 0 0 -1 1 0 0
[pid=27765/tid=27776] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27776/stat : 27776 (java) S 27763 27765 23263 0 -1 64 2 0 0 0 0 0 0 0 25 0 12 0 162649281 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27765/tid=27777] ppid=27763 vsize=921800 CPUtime=0
/proc/27765/task/27777/stat : 27777 (java) S 27763 27765 23263 0 -1 64 1 0 0 0 0 0 0 0 15 0 12 0 162649282 943923200 20362 18446744073709551615 134512640 134570532 4294956496 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 1 0 0
Current children cumulated CPU time (s) 3.7
Current children cumulated vsize (KiB) 921800

Sending SIGTERM to process tree (bottom up)
Sleeping 2 seconds

Child status: 143
Real time (s): 2.45672
CPU time (s): 3.80042
CPU user time (s): 3.64745
CPU system time (s): 0.152976
CPU usage (%): 154.695
Max. virtual memory (cumulated for all children) (KiB): 921800

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.64744
system time used= 0.152976
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 23631
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 503
involuntary context switches= 405

runsolver used 0.006998 s user time and 0.016997 s system time

The end

Launcher Data (download as text)

Begin job on node41 on Sun Jan  7 04:01:40 UTC 2007


IDJOB= 200416
IDBENCH= 3706
FILE ID= node41/200416-1168142500

PBS_JOBID= 3478026

Free space on /tmp= 66552 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-15-5-add.xml
COMMAND LINE= java -server -Xmx700M -Xms700M -jar /tmp/evaluation/200416-1168142500/sat4jCSP-bf3-cached.jar /tmp/evaluation/200416-1168142500/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-200416-1168142500 -o ROOT/results/node41/solver-200416-1168142500 -C 1800 -M 900  java -server -Xmx700M -Xms700M -jar /tmp/evaluation/200416-1168142500/sat4jCSP-bf3-cached.jar /tmp/evaluation/200416-1168142500/unknown.xml

META MD5SUM SOLVER= c614762dbe7de46d2af9d7b592545c03
MD5SUM BENCH=  932f51956d211f0c2bd7b7cdf66f3696

RANDOM SEED= 309862811

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		: 3000.234
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		: 3000.234
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:       1508024 kB
Buffers:         51624 kB
Cached:         413440 kB
SwapCached:        396 kB
Active:         228224 kB
Inactive:       252876 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1508024 kB
SwapTotal:     4192956 kB
SwapFree:      4191892 kB
Dirty:            2424 kB
Writeback:           0 kB
Mapped:          25328 kB
Slab:            52356 kB
Committed_AS:  2798268 kB
PageTables:       1720 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= 66552 MiB



End job on node41 on Sun Jan  7 04:01:43 UTC 2007