Trace number 1732897

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 3.15152 3.1513

General information on the benchmark

NameCRAFTED/ramseycube/
Q3inK12.cnf
MD5SUMbcbdfe82209aa971e7a6ff7bba833b95
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark2.39164
Satisfiable
(Un)Satisfiability was proved
Number of variables66
Number of clauses831600
Sum of the clauses size9979200
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 5831600

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-1732897-1240783966.cnf
0.00/0.00	c parsed header 'p cnf 66 831600'
1.59/1.64	c initialized 66 variables
1.59/1.64	c found 831600 non trivial clauses
1.59/1.64	c
1.59/1.64	c random number generator seed 0
1.59/1.64	c 
1.59/1.64	c  seconds     variables   original    learned     agility
1.59/1.64	c         level        used      conflicts    limit          MB
1.59/1.64	c 
1.59/1.64	c s   1.6   0.0    66   0.0 831e3     0     0     0   0.0  54.8 
2.39/2.45	c 
2.39/2.45	c initial reduction limit 415800 clauses
2.39/2.45	c 
2.39/2.45	c +   2.5  33.8    66 100.0 831e3   100   100 457e3   4.0  54.8 
2.39/2.47	c R   2.5  33.8    66 100.0 831e3   100   100 457e3   4.0  54.8 
2.79/2.90	c +   2.9  32.2    66 100.0 831e3   250   250 503e3   9.1  54.8 
2.99/3.06	c 1   3.1  33.1    66 100.0 831e3   351   351 503e3  12.5  54.8 
3.09/3.15	c 
3.09/3.15	c  seconds     variables   original    learned     agility
3.09/3.15	c         level        used      conflicts    limit          MB
3.09/3.15	c 
3.09/3.15	s SATISFIABLE
3.09/3.15	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
3.09/3.15	v -25 -26 27 28 -29 -30 31 32 33 34 35 36 37 38 -39 40 41 -42 -43 44 -45 46 47
3.09/3.15	v 48 49 -50 -51 -52 53 54 55 56 -57 -58 59 60 -61 -62 63 -64 65 -66 0
3.09/3.15	c
3.09/3.15	c 0 iterations
3.09/3.15	c 2 restarts
3.09/3.15	c 0 failed literals
3.09/3.15	c 351 conflicts
3.09/3.15	c 494 decisions
3.09/3.15	c 0 fixed variables
3.09/3.15	c 11793 learned literals
3.09/3.15	c 4.4% deleted literals
3.09/3.15	c 3789 propagations
3.09/3.15	c 100.0% variables used
3.09/3.15	c 3.1 seconds in library
3.09/3.15	c 0.0 megaprops/second
3.09/3.15	c 1 simplifications
3.09/3.15	c 0 reductions
3.09/3.15	c 0.0 MB recycled
3.09/3.15	c 54.8 MB maximally allocated
3.09/3.15	c 3.1 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-1732897-1240783966/watcher-1732897-1240783966 -o /tmp/evaluation-result-1732897-1240783966/solver-1732897-1240783966 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/picosat HOME/instance-1732897-1240783966.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: 1.71 1.90 1.67 2/64 28466
/proc/meminfo: memFree=1628736/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=912 CPUtime=0
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 117 0 0 0 0 0 0 0 18 0 1 0 106430034 933888 102 1992294400 134512640 135137933 4294956224 18446744073709551615 134668310 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 228 102 56 152 0 74 0

[startup+0.00727788 s]
/proc/loadavg: 1.71 1.90 1.67 2/64 28466
/proc/meminfo: memFree=1628736/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=912 CPUtime=0
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 142 0 0 0 0 0 0 0 18 0 1 0 106430034 933888 127 1992294400 134512640 135137933 4294956224 18446744073709551615 134668310 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 228 128 56 152 0 74 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 912

[startup+0.101289 s]
/proc/loadavg: 1.71 1.90 1.67 2/64 28466
/proc/meminfo: memFree=1628736/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=4620 CPUtime=0.09
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 1041 0 0 0 9 0 0 0 18 0 1 0 106430034 4730880 1026 1992294400 134512640 135137933 4294956224 18446744073709551615 134668310 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 1155 1026 56 152 0 1001 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4620

[startup+0.301309 s]
/proc/loadavg: 1.71 1.90 1.67 2/64 28466
/proc/meminfo: memFree=1628736/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=12648 CPUtime=0.29
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 2962 0 0 0 28 1 0 0 19 0 1 0 106430034 12951552 2947 1992294400 134512640 135137933 4294956224 18446744073709551615 134689438 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 3162 2948 56 152 0 3008 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 12648

[startup+0.701352 s]
/proc/loadavg: 1.71 1.90 1.67 2/64 28466
/proc/meminfo: memFree=1628736/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=28324 CPUtime=0.7
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 6817 0 0 0 66 4 0 0 23 0 1 0 106430034 29003776 6802 1992294400 134512640 135137933 4294956224 18446744073709551615 134668310 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 7081 6802 56 152 0 6927 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 28324

[startup+1.50244 s]
/proc/loadavg: 1.65 1.89 1.67 2/65 28467
/proc/meminfo: memFree=1590136/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=59544 CPUtime=1.49
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 14524 0 0 0 140 9 0 0 25 0 1 0 106430034 60973056 14509 1992294400 134512640 135137933 4294956224 18446744073709551615 134689438 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 14886 14509 56 152 0 14732 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 59544

[startup+3.10161 s]
/proc/loadavg: 1.65 1.89 1.67 2/65 28467
/proc/meminfo: memFree=1566712/2055920 swapFree=4192812/4192956
[pid=28466] ppid=28464 vsize=63372 CPUtime=3.09
/proc/28466/stat : 28466 (picosat) R 28464 28466 27573 0 -1 4194304 15540 0 0 0 300 9 0 0 25 0 1 0 106430034 64892928 15525 1992294400 134512640 135137933 4294956224 18446744073709551615 134663164 0 0 4096 0 0 0 0 17 1 0 0
/proc/28466/statm: 15843 15525 69 152 0 15689 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 63372

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

Child status: 10
Real time (s): 3.1513
CPU time (s): 3.15152
CPU user time (s): 3.04054
CPU system time (s): 0.110983
CPU usage (%): 100.007
Max. virtual memory (cumulated for all children) (KiB): 63372

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.04054
system time used= 0.110983
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 15542
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= 9

runsolver used 0.003999 second user time and 0.016997 second system time

The end

Launcher Data 

Begin job on node21 at 2009-04-27 00:12:49
IDJOB=1732897
IDBENCH=71130
IDSOLVER=506
FILE ID=node21/1732897-1240783966
PBS_JOBID= 9187264
Free space on /tmp= 66308 MiB

SOLVER NAME= picosat 913
BENCH NAME= SAT09/CRAFTED/ramseycube/Q3inK12.cnf
COMMAND LINE= HOME/picosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1732897-1240783966/watcher-1732897-1240783966 -o /tmp/evaluation-result-1732897-1240783966/solver-1732897-1240783966 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/picosat HOME/instance-1732897-1240783966.cnf

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

MD5SUM BENCH= bcbdfe82209aa971e7a6ff7bba833b95
RANDOM SEED=581735871

node21.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:       1629216 kB
Buffers:         48156 kB
Cached:         289056 kB
SwapCached:          0 kB
Active:         149944 kB
Inactive:       201136 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1629216 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:           35240 kB
Writeback:           0 kB
Mapped:          23652 kB
Slab:            61676 kB
Committed_AS:   447244 kB
PageTables:       1376 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= 66308 MiB
End job on node21 at 2009-04-27 00:12:52