Trace number 456074

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 1.71574 1.7206

General information on the benchmark

Namecrafted/Medium/contest05/pebbling/
unsat-pbl-00250.sat05-1330.reshuffled-07.cnf
MD5SUM922dc9f32281b0c4efd640c112a641b6
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.71574
Satisfiable
(Un)Satisfiability was proved
Number of variables864
Number of clauses32700
Sum of the clauses size256765
Maximum clause length11
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 228
Number of clauses of size 3180
Number of clauses of size 4348
Number of clauses of size 51746
Number of clauses of size over 530396

Solver Data (download as text)

1.69/1.71	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node35/watcher-456074-1178324210 -o ROOT/results/node35/solver-456074-1178324210 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/456074-1178324210/picosat /tmp/evaluation/456074-1178324210/instance-456074-1178324210.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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 0.97 0.91 3/77 31631
/proc/meminfo: memFree=1480512/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=568 CPUtime=0
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 80 0 0 0 0 0 0 0 19 0 1 0 280336406 581632 66 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 142 66 40 102 0 37 0

[startup+0.0193131 s]
/proc/loadavg: 1.00 0.97 0.91 3/77 31631
/proc/meminfo: memFree=1480512/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=568 CPUtime=0
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 87 0 0 0 0 0 0 0 19 0 1 0 280336406 581632 73 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 142 73 40 102 0 37 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 568

[startup+0.101322 s]
/proc/loadavg: 1.00 0.97 0.91 3/77 31631
/proc/meminfo: memFree=1480512/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=832 CPUtime=0.08
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 141 0 0 0 3 5 0 0 19 0 1 0 280336406 851968 127 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 208 127 40 102 0 103 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 832

[startup+0.301346 s]
/proc/loadavg: 1.00 0.97 0.91 3/77 31631
/proc/meminfo: memFree=1480512/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=1384 CPUtime=0.28
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 273 0 0 0 12 16 0 0 20 0 1 0 280336406 1417216 259 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 346 259 40 102 0 241 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 1384

[startup+0.701393 s]
/proc/loadavg: 1.00 0.97 0.91 3/77 31631
/proc/meminfo: memFree=1480512/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=2568 CPUtime=0.68
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 548 0 0 0 33 35 0 0 24 0 1 0 280336406 2629632 534 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134583827 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 642 534 42 102 0 537 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 2568

[startup+1.50249 s]
/proc/loadavg: 1.00 0.97 0.91 2/78 31632
/proc/meminfo: memFree=1477944/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=3216 CPUtime=1.49
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 713 0 0 0 113 36 0 0 25 0 1 0 280336406 3293184 697 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134542001 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 804 697 48 102 0 699 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 3216

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

[startup+1.70151 s]
/proc/loadavg: 1.00 0.97 0.91 2/78 31632
/proc/meminfo: memFree=1477944/2055920 swapFree=4151372/4192956
[pid=31631] ppid=31629 vsize=3216 CPUtime=1.69
/proc/31631/stat : 31631 (picosat) R 31629 31631 31056 0 -1 4194304 715 0 0 0 133 36 0 0 25 0 1 0 280336406 3293184 699 18446744073709551615 134512640 134931368 4294956672 18446744073709551615 134525778 0 0 4096 0 0 0 0 17 1 0 0
/proc/31631/statm: 804 699 48 102 0 699 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 3216

Child status: 20
Real time (s): 1.7206
CPU time (s): 1.71574
CPU user time (s): 1.35379
CPU system time (s): 0.361944
CPU usage (%): 99.7174
Max. virtual memory (cumulated for all children) (KiB): 3216

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.35379
system time used= 0.361944
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 717
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= 7
involuntary context switches= 4

runsolver used 0.002999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node35 on Sat May  5 00:16:50 UTC 2007

IDJOB= 456074
IDBENCH= 24590
IDSOLVER= 171
FILE ID= node35/456074-1178324210

PBS_JOBID= 5188746

Free space on /tmp= 66563 MiB

SOLVER NAME= picosat 535
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/pebbling/unsat-pbl-00250.sat05-1330.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/456074-1178324210/picosat /tmp/evaluation/456074-1178324210/instance-456074-1178324210.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node35/watcher-456074-1178324210 -o ROOT/results/node35/solver-456074-1178324210 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/456074-1178324210/picosat /tmp/evaluation/456074-1178324210/instance-456074-1178324210.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  922dc9f32281b0c4efd640c112a641b6

RANDOM SEED= 941174947

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node35.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		: 3000.232
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		: 3000.232
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:       1480920 kB
Buffers:         43192 kB
Cached:         403572 kB
SwapCached:       9516 kB
Active:         160764 kB
Inactive:       316704 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1480920 kB
SwapTotal:     4192956 kB
SwapFree:      4151372 kB
Dirty:            1828 kB
Writeback:           0 kB
Mapped:          37180 kB
Slab:            82856 kB
Committed_AS:  7601616 kB
PageTables:       2008 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= 66563 MiB

End job on node35 on Sat May  5 00:16:52 UTC 2007