Trace number 1731999

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
clasp 1.2.0-SAT09-32UNSAT 1.19082 1.19054

General information on the benchmark

NameCRAFTED/sgen/unsat/
sgen1-unsat-61-100.cnf
MD5SUM43b8e7efe061e21db6b4c047915ae87c
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.959853
Satisfiable
(Un)Satisfiability was proved
Number of variables61
Number of clauses132
Sum of the clauses size396
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3132
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.10/1.19	c clasp version 1.2.0-SAT09 
1.10/1.19	c Reading from ...776858/instance-1731999-1240776858.cnf
1.10/1.19	c Reading      : Done(0.000s)
1.10/1.19	c Preprocessing: |-Done(0.000s)
1.10/1.19	c Solving...
1.10/1.19	
1.10/1.19	c Models    : 0     
1.10/1.19	c Time         : 1.180s (Solve: 1.180s)
1.10/1.19	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1731999-1240776858/watcher-1731999-1240776858 -o /tmp/evaluation-result-1731999-1240776858/solver-1731999-1240776858 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/clasp --file=HOME/instance-1731999-1240776858.cnf --dimacs --number=1 --sat-p=20,25,150 --hParam=0,512 

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: 0.93 0.98 0.99 2/64 28209
/proc/meminfo: memFree=1676368/2055920 swapFree=4180920/4192956
[pid=28209] ppid=28207 vsize=1696 CPUtime=0
/proc/28209/stat : 28209 (clasp) R 28207 28209 28048 0 -1 4194304 217 0 0 0 0 0 0 0 20 0 1 0 105718711 1736704 201 1992294400 134512640 136057169 4294956160 18446744073709551615 134828617 0 0 4096 16386 0 0 0 17 1 0 0
/proc/28209/statm: 424 201 180 377 0 44 0

[startup+0.0752101 s]
/proc/loadavg: 0.93 0.98 0.99 2/64 28209
/proc/meminfo: memFree=1676368/2055920 swapFree=4180920/4192956
[pid=28209] ppid=28207 vsize=1696 CPUtime=0.07
/proc/28209/stat : 28209 (clasp) R 28207 28209 28048 0 -1 4194304 219 0 0 0 7 0 0 0 20 0 1 0 105718711 1736704 203 1992294400 134512640 136057169 4294956160 18446744073709551615 134647407 0 0 4096 16386 0 0 0 17 1 0 0
/proc/28209/statm: 424 203 180 377 0 44 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 1696

[startup+0.101211 s]
/proc/loadavg: 0.93 0.98 0.99 2/64 28209
/proc/meminfo: memFree=1676368/2055920 swapFree=4180920/4192956
[pid=28209] ppid=28207 vsize=1696 CPUtime=0.09
/proc/28209/stat : 28209 (clasp) R 28207 28209 28048 0 -1 4194304 220 0 0 0 9 0 0 0 20 0 1 0 105718711 1736704 204 1992294400 134512640 136057169 4294956160 18446744073709551615 134824130 0 0 4096 16386 0 0 0 17 1 0 0
/proc/28209/statm: 424 204 180 377 0 44 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1696

[startup+0.301231 s]
/proc/loadavg: 0.93 0.98 0.99 2/64 28209
/proc/meminfo: memFree=1676368/2055920 swapFree=4180920/4192956
[pid=28209] ppid=28207 vsize=1696 CPUtime=0.29
/proc/28209/stat : 28209 (clasp) R 28207 28209 28048 0 -1 4194304 225 0 0 0 29 0 0 0 22 0 1 0 105718711 1736704 209 1992294400 134512640 136057169 4294956160 18446744073709551615 134609994 0 0 4096 16386 0 0 0 17 1 0 0
/proc/28209/statm: 424 209 180 377 0 44 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1696

[startup+0.701272 s]
/proc/loadavg: 0.93 0.98 0.99 2/64 28209
/proc/meminfo: memFree=1676368/2055920 swapFree=4180920/4192956
[pid=28209] ppid=28207 vsize=1696 CPUtime=0.69
/proc/28209/stat : 28209 (clasp) R 28207 28209 28048 0 -1 4194304 228 0 0 0 69 0 0 0 25 0 1 0 105718711 1736704 212 1992294400 134512640 136057169 4294956160 18446744073709551615 134831667 0 0 4096 16386 0 0 0 17 1 0 0
/proc/28209/statm: 424 212 180 377 0 44 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1696

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

[startup+1.10531 s]
/proc/loadavg: 0.93 0.98 0.99 2/65 28210
/proc/meminfo: memFree=1676168/2055920 swapFree=4180920/4192956
[pid=28209] ppid=28207 vsize=1696 CPUtime=1.1
/proc/28209/stat : 28209 (clasp) R 28207 28209 28048 0 -1 4194304 230 0 0 0 110 0 0 0 25 0 1 0 105718711 1736704 214 1992294400 134512640 136057169 4294956160 18446744073709551615 134613312 0 0 4096 16386 0 0 0 17 1 0 0
/proc/28209/statm: 424 214 180 377 0 44 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 1696

Child status: 20
Real time (s): 1.19054
CPU time (s): 1.19082
CPU user time (s): 1.18882
CPU system time (s): 0.001999
CPU usage (%): 100.023
Max. virtual memory (cumulated for all children) (KiB): 1696

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.18882
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 234
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= 6

runsolver used 0.003999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node27 at 2009-04-26 22:14:18
IDJOB=1731999
IDBENCH=71108
IDSOLVER=508
FILE ID=node27/1731999-1240776858
PBS_JOBID= 9187226
Free space on /tmp= 66248 MiB

SOLVER NAME= clasp 1.2.0-SAT09-32
BENCH NAME= SAT09/CRAFTED/sgen/unsat/sgen1-unsat-61-100.cnf
COMMAND LINE= HOME/clasp --file=BENCHNAME --dimacs --number=1 --sat-p=20,25,150 --hParam=0,512
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1731999-1240776858/watcher-1731999-1240776858 -o /tmp/evaluation-result-1731999-1240776858/solver-1731999-1240776858 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/clasp --file=HOME/instance-1731999-1240776858.cnf --dimacs --number=1 --sat-p=20,25,150 --hParam=0,512

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

MD5SUM BENCH= 43b8e7efe061e21db6b4c047915ae87c
RANDOM SEED=1054466722

node27.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		: 2800.234
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	: 5521.40
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		: 2800.234
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:       1676784 kB
Buffers:         44320 kB
Cached:         255476 kB
SwapCached:       5116 kB
Active:          82516 kB
Inactive:       225452 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1676784 kB
SwapTotal:     4192956 kB
SwapFree:      4180920 kB
Dirty:            2016 kB
Writeback:           0 kB
Mapped:          14112 kB
Slab:            57064 kB
Committed_AS:   390968 kB
PageTables:       1372 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264948 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66248 MiB
End job on node27 at 2009-04-26 22:14:19