Trace number 1732647

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
picosat 913SAT 0.032994 0.0338919

General information on the benchmark

NameCRAFTED/ramseycube/
Q3inK09.cnf
MD5SUM167bdfed21466d25646b3f9481920143
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.024995
Satisfiable
(Un)Satisfiability was proved
Number of variables36
Number of clauses15120
Sum of the clauses size181440
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 515120

Solver Data 

0.00/0.00	c PicoSAT SAT Solver Version 913
0.00/0.00	c Copyright (c) 2006 - 2009 Armin Biere JKU Linz
0.00/0.00	c gcc -Wall -Wextra -m32 -static -DNDEBUG -O3 -fomit-frame-pointer -finline-limit=1000000
0.00/0.00	c
0.00/0.00	c parsing HOME/instance-1732647-1240782580.cnf
0.00/0.00	c parsed header 'p cnf 36 15120'
0.00/0.03	c initialized 36 variables
0.00/0.03	c found 15120 non trivial clauses
0.00/0.03	c
0.00/0.03	c random number generator seed 0
0.00/0.03	c 
0.00/0.03	c  seconds     variables   original    learned     agility
0.00/0.03	c         level        used      conflicts    limit          MB
0.00/0.03	c 
0.00/0.03	c s   0.0   0.0    36   0.0 15120     0     0     0   0.0   1.0 
0.00/0.03	c 
0.00/0.03	c initial reduction limit 7560 clauses
0.00/0.03	c 
0.00/0.03	c 1   0.0  14.0    36   0.0 15120     0     0  7560   0.0   1.0 
0.00/0.03	c 
0.00/0.03	c  seconds     variables   original    learned     agility
0.00/0.03	c         level        used      conflicts    limit          MB
0.00/0.03	c 
0.00/0.03	s SATISFIABLE
0.00/0.03	v -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21
0.00/0.03	v -22 -23 24 25 26 -27 28 29 30 31 32 33 -34 -35 -36 0
0.00/0.03	c
0.00/0.03	c 0 iterations
0.00/0.03	c 0 restarts
0.00/0.03	c 0 failed literals
0.00/0.03	c 0 conflicts
0.00/0.03	c 27 decisions
0.00/0.03	c 0 fixed variables
0.00/0.03	c 0 learned literals
0.00/0.03	c 0.0% deleted literals
0.00/0.03	c 36 propagations
0.00/0.03	c 0.0% variables used
0.00/0.03	c 0.0 seconds in library
0.00/0.03	c 0.0 megaprops/second
0.00/0.03	c 1 simplifications
0.00/0.03	c 0 reductions
0.00/0.03	c 0.0 MB recycled
0.00/0.03	c 1.0 MB maximally allocated
0.00/0.03	c 0.0 seconds total run time

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-1732647-1240782580/watcher-1732647-1240782580 -o /tmp/evaluation-result-1732647-1240782580/solver-1732647-1240782580 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/picosat HOME/instance-1732647-1240782580.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: 1.00 1.00 1.00 3/64 25518
/proc/meminfo: memFree=1679144/2055920 swapFree=4181904/4192956
[pid=25518] ppid=25516 vsize=912 CPUtime=0
/proc/25518/stat : 25518 (picosat) R 25516 25518 25263 0 -1 4194304 121 0 0 0 0 0 0 0 18 0 1 0 106285238 933888 106 1992294400 134512640 135137933 4294956224 18446744073709551615 134545677 0 0 4096 0 0 0 0 17 1 0 0
/proc/25518/statm: 228 106 56 152 0 74 0

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

Child status: 10
Real time (s): 0.0338919
CPU time (s): 0.032994
CPU user time (s): 0.031995
CPU system time (s): 0.000999
CPU usage (%): 97.3507
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.031995
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= 377
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= 2
involuntary context switches= 0

runsolver used 0.003999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node58 at 2009-04-26 23:49:40
IDJOB=1732647
IDBENCH=71125
IDSOLVER=506
FILE ID=node58/1732647-1240782580
PBS_JOBID= 9187245
Free space on /tmp= 65844 MiB

SOLVER NAME= picosat 913
BENCH NAME= SAT09/CRAFTED/ramseycube/Q3inK09.cnf
COMMAND LINE= HOME/picosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1732647-1240782580/watcher-1732647-1240782580 -o /tmp/evaluation-result-1732647-1240782580/solver-1732647-1240782580 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/picosat HOME/instance-1732647-1240782580.cnf

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

MD5SUM BENCH= 167bdfed21466d25646b3f9481920143
RANDOM SEED=1220368130

node58.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		: 3000.233
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		: 3000.233
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:       1679560 kB
Buffers:         33716 kB
Cached:         281452 kB
SwapCached:       5112 kB
Active:         155288 kB
Inactive:       168524 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1679560 kB
SwapTotal:     4192956 kB
SwapFree:      4181904 kB
Dirty:            1332 kB
Writeback:           0 kB
Mapped:          14388 kB
Slab:            38592 kB
Committed_AS:   390456 kB
PageTables:       1356 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= 65844 MiB
End job on node58 at 2009-04-26 23:49:40