Trace number 332898

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
picosat 535UNSAT 1.09583 1.09761

General information on the benchmark

Namecrafted/Medium/contest05/pebbling/
unsat-pbl-00200.sat05-1329.reshuffled-07.cnf
MD5SUM2ed4f9474a813c543de526c0ca3729de
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.02384
Satisfiable
(Un)Satisfiability was proved
Number of variables725
Number of clauses22684
Sum of the clauses size194068
Maximum clause length11
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 219
Number of clauses of size 3197
Number of clauses of size 4381
Number of clauses of size 51017
Number of clauses of size over 521068

Solver Data (download as text)

1.00/1.09	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node12/watcher-332898-1173495044 -o ROOT/results/node12/solver-332898-1173495044 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/332898-1173495044/picosat /tmp/evaluation/332898-1173495044/instance-332898-1173495044.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): 2400 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: 1.85 1.83 1.48 3/77 18793
/proc/meminfo: memFree=1694640/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=568 CPUtime=0
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 80 0 0 0 0 0 0 0 18 0 1 0 369458892 581632 65 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 142 65 40 102 0 37 0

[startup+0.05789 s]
/proc/loadavg: 1.85 1.83 1.48 3/77 18793
/proc/meminfo: memFree=1694640/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=700 CPUtime=0.05
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 112 0 0 0 2 3 0 0 18 0 1 0 369458892 716800 97 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 175 97 40 102 0 70 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 700

[startup+0.101898 s]
/proc/loadavg: 1.85 1.83 1.48 3/77 18793
/proc/meminfo: memFree=1694640/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=832 CPUtime=0.09
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 140 0 0 0 5 4 0 0 18 0 1 0 369458892 851968 125 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 208 125 40 102 0 103 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 832

[startup+0.301933 s]
/proc/loadavg: 1.85 1.83 1.48 3/77 18793
/proc/meminfo: memFree=1694640/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=1276 CPUtime=0.29
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 266 0 0 0 14 15 0 0 19 0 1 0 369458892 1306624 251 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 319 251 40 102 0 214 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1276

[startup+0.702004 s]
/proc/loadavg: 1.85 1.83 1.48 3/77 18793
/proc/meminfo: memFree=1694640/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=2336 CPUtime=0.69
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 511 0 0 0 43 26 0 0 23 0 1 0 369458892 2392064 494 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 584 494 48 102 0 479 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2336

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

[startup+0.901042 s]
/proc/loadavg: 1.85 1.83 1.48 3/77 18793
/proc/meminfo: memFree=1694640/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=2336 CPUtime=0.89
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 530 0 0 0 63 26 0 0 25 0 1 0 369458892 2392064 513 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134543546 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 584 513 48 102 0 479 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 2336

[startup+1.00106 s]
/proc/loadavg: 1.85 1.83 1.48 2/78 18794
/proc/meminfo: memFree=1692776/2055920 swapFree=4156588/4192956
[pid=18793] ppid=18791 vsize=2336 CPUtime=1
/proc/18793/stat : 18793 (picosat) R 18791 18793 17897 0 -1 4194304 533 0 0 0 74 26 0 0 25 0 1 0 369458892 2392064 516 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134520163 0 0 4096 0 0 0 0 17 1 0 0
/proc/18793/statm: 584 516 48 102 0 479 0
Current children cumulated CPU time (s) 1
Current children cumulated vsize (KiB) 2336

Child status: 20
Real time (s): 1.09761
CPU time (s): 1.09583
CPU user time (s): 0.832873
CPU system time (s): 0.26296
CPU usage (%): 99.8377
Max. virtual memory (cumulated for all children) (KiB): 2336

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.832873
system time used= 0.26296
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 538
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= 22

runsolver used 0.002999 second user time and 0.007998 second system time

The end

Launcher Data (download as text)

Begin job on node12 on Sat Mar 10 02:50:44 UTC 2007

IDJOB= 332898
IDBENCH= 24591
IDSOLVER= 106
FILE ID= node12/332898-1173495044

PBS_JOBID= 4101096

Free space on /tmp= 66403 MiB

SOLVER NAME= picosat 535
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00200.sat05-1329.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/332898-1173495044/picosat /tmp/evaluation/332898-1173495044/instance-332898-1173495044.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node12/watcher-332898-1173495044 -o ROOT/results/node12/solver-332898-1173495044 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/332898-1173495044/picosat /tmp/evaluation/332898-1173495044/instance-332898-1173495044.cnf            

META MD5SUM SOLVER= 1cb12d44dc66ecc4d20a168f5cfd1323
MD5SUM BENCH=  2ed4f9474a813c543de526c0ca3729de

RANDOM SEED= 672873097

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node12.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.285
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		: 3000.285
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:       1695112 kB
Buffers:         39112 kB
Cached:         248192 kB
SwapCached:      15228 kB
Active:         197776 kB
Inactive:       112768 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1695112 kB
SwapTotal:     4192956 kB
SwapFree:      4156588 kB
Dirty:            1352 kB
Writeback:           0 kB
Mapped:          29672 kB
Slab:            35876 kB
Committed_AS:  1617924 kB
PageTables:       1692 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= 66403 MiB

End job on node12 on Sat Mar 10 02:50:46 UTC 2007