Trace number 1732991

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
SAT4J CORE 2.1 RC1SAT 0.423935 0.368552

General information on the benchmark

NameCRAFTED/ramseycube/
Q3inK08.cnf
MD5SUM492aabee9d1147cbc26baa44607c206b
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.003998
Satisfiable
(Un)Satisfiability was proved
Number of variables28
Number of clauses1680
Sum of the clauses size20160
Maximum clause length12
Minimum clause length12
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 51680

Solver Data 

0.08/0.14	c SAT4J: a SATisfiability library for Java (c) 2004-2008 Daniel Le Berre
0.08/0.14	c This is free software under the dual EPL/GNU LGPL licenses.
0.08/0.14	c See www.sat4j.org for details.
0.08/0.15	c version 2.1.0.v20090228
0.08/0.15	c sun.arch.data.model	32
0.08/0.15	c java.version	1.6.0_12
0.08/0.15	c os.name	Linux
0.08/0.15	c os.version	2.6.9-22.EL.rootsmp
0.08/0.15	c os.arch	i386
0.08/0.15	c Free memory 1651659224
0.08/0.15	c Max memory 1654456320
0.08/0.15	c Total memory 1654456320
0.08/0.15	c Number of processors 2
0.22/0.20	c c --- Begin Solver configuration ---
0.22/0.20	c Stops conflict analysis at the first Unique Implication Point
0.22/0.20	c org.sat4j.minisat.constraints.MixedDataStructureDanielWL@11b9fb1
0.22/0.20	c Limit learning to clauses of size smaller or equal to 10% of the number of variables
0.22/0.20	c claDecay=0.999 varDecay=0.95 conflictBoundIncFactor=1.1 initConflictBound=100 
0.22/0.20	c VSIDS like heuristics from MiniSAT using a heap lightweight component caching from RSAT
0.22/0.20	c Expensive reason simplification
0.22/0.20	c Armin Biere (Picosat) restarts strategy
0.22/0.20	c timeout=2147483647s
0.22/0.20	c DB Simplification allowed=true
0.22/0.20	c --- End Solver configuration ---
0.22/0.20	c solving HOME/instance-1732991-1240784623.cnf
0.22/0.20	c reading problem ... 
0.22/0.29	c ... done. Wall clock time 0.097s.
0.22/0.29	c #vars     28
0.22/0.29	c #constraints  1680
0.22/0.29	c constraints type 
0.22/0.30	c org.sat4j.minisat.constraints.cnf.OriginalWLClause => 1680
0.38/0.31	c starts		: 1
0.38/0.31	c conflicts		: 0
0.38/0.31	c decisions		: 23
0.38/0.31	c propagations		: 28
0.38/0.31	c inspects		: 1800
0.38/0.31	c learnt literals	: 0
0.38/0.31	c learnt binary clauses	: 0
0.38/0.31	c learnt ternary clauses	: 0
0.38/0.31	c learnt clauses	: 0
0.38/0.31	c ignored clauses	: 0
0.38/0.31	c root simplifications	: 1
0.38/0.31	c removed literals (reason simplification)	: 0
0.38/0.31	c reason swapping (by a shorter reason)	: 0
0.38/0.31	c Calls to reduceDB	: 0
0.38/0.31	c speed (assignments/second)	: 1866.6666666666667
0.38/0.31	c non guided choices	23
0.38/0.31	c learnt constraints type 
0.38/0.31	s SATISFIABLE
0.38/0.31	v -1 2 3 4 5 6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -26 -27 -28 0
0.38/0.31	c Total wall clock time (in seconds) : 0.112

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1732991-1240784623/watcher-1732991-1240784623 -o /tmp/evaluation-result-1732991-1240784623/solver-1732991-1240784623 -C 1200 -W 1800 -M 1800 --output-limit 1,15 java6 -server -Xms1600m -Xmx1600m -jar HOME/org.sat4j.core.jar HOME/instance-1732991-1240784623.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 28220
/proc/meminfo: memFree=1559488/2055920 swapFree=4180888/4192956
[pid=28220] ppid=28218 vsize=144 CPUtime=0
/proc/28220/stat : 28220 (java6) R 28218 28220 27971 0 -1 0 34 0 0 0 0 0 0 0 20 0 1 0 106489030 147456 19 1992294400 134512640 134550932 4294956176 18446744073709551615 5524508 0 0 4096 0 0 0 0 17 1 0 0
/proc/28220/statm: 37 20 14 9 0 3 0

[startup+0.038747 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 28220
/proc/meminfo: memFree=1559488/2055920 swapFree=4180888/4192956
[pid=28220] ppid=28218 vsize=1777088 CPUtime=0.03
/proc/28220/stat : 28220 (java) S 28218 28220 27971 0 -1 0 3236 0 1 0 1 2 0 0 18 0 4 0 106489030 1819738112 2983 1992294400 134512640 134550932 4294956000 18446744073709551615 4294960144 0 0 0 16784584 18446744073709551615 0 0 17 1 0 0
/proc/28220/statm: 444272 2983 938 9 0 441623 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1777088

[startup+0.101758 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 28220
/proc/meminfo: memFree=1559488/2055920 swapFree=4180888/4192956
[pid=28220] ppid=28218 vsize=1780924 CPUtime=0.08
/proc/28220/stat : 28220 (java) S 28218 28220 27971 0 -1 0 3888 0 1 0 6 2 0 0 18 0 12 0 106489030 1823666176 3631 1992294400 134512640 134550932 4294956000 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/28220/statm: 445231 3631 1067 9 0 442578 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 1780924

[startup+0.301792 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 28220
/proc/meminfo: memFree=1559488/2055920 swapFree=4180888/4192956
[pid=28220] ppid=28218 vsize=1782980 CPUtime=0.38
/proc/28220/stat : 28220 (java) S 28218 28220 27971 0 -1 0 5177 0 1 0 35 3 0 0 18 0 12 0 106489030 1825771520 4915 1992294400 134512640 134550932 4294956000 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/28220/statm: 445745 4915 1367 9 0 443092 0
Current children cumulated CPU time (s) 0.38
Current children cumulated vsize (KiB) 1782980

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

Child status: 10
Real time (s): 0.368552
CPU time (s): 0.423935
CPU user time (s): 0.380942
CPU system time (s): 0.042993
CPU usage (%): 115.027
Max. virtual memory (cumulated for all children) (KiB): 1782980

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.380942
system time used= 0.042993
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5221
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= 169
involuntary context switches= 117

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node60 at 2009-04-27 00:23:43
IDJOB=1732991
IDBENCH=71132
IDSOLVER=500
FILE ID=node60/1732991-1240784623
PBS_JOBID= 9187280
Free space on /tmp= 66416 MiB

SOLVER NAME= SAT4J CORE  2.1 RC1
BENCH NAME= SAT09/CRAFTED/ramseycube/Q3inK08.cnf
COMMAND LINE= java6 -server -Xms1600m -Xmx1600m -jar HOME/org.sat4j.core.jar BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1732991-1240784623/watcher-1732991-1240784623 -o /tmp/evaluation-result-1732991-1240784623/solver-1732991-1240784623 -C 1200 -W 1800 -M 1800 --output-limit 1,15  java6 -server -Xms1600m -Xmx1600m -jar HOME/org.sat4j.core.jar HOME/instance-1732991-1240784623.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 492aabee9d1147cbc26baa44607c206b
RANDOM SEED=1166515028

node60.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		: 3000.256
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		: 3000.256
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:       1559968 kB
Buffers:         61616 kB
Cached:         347372 kB
SwapCached:       5948 kB
Active:         120100 kB
Inactive:       297372 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1559968 kB
SwapTotal:     4192956 kB
SwapFree:      4180888 kB
Dirty:             232 kB
Writeback:           0 kB
Mapped:          14080 kB
Slab:            64440 kB
Committed_AS:   430636 kB
PageTables:       1448 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= 66416 MiB
End job on node60 at 2009-04-27 00:23:43