Trace number 421825

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
minisat SAT 2007UNSAT 1.9417 1.94321

General information on the benchmark

Namecrafted/Difficult/contest05/sabharwal/
grid-pebbling-unsat-grid-pbl-0300.sat05-1350.sat05-1350.reshuffled-07.cnf
MD5SUM4c3b2816cb16b0fd4134bf2c85ce45d0
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.92271
Satisfiable
(Un)Satisfiability was proved
Number of variables90300
Number of clauses179702
Sum of the clauses size718202
Maximum clause length4
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 2300
Number of clauses of size 30
Number of clauses of size 4179400
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	c This is MiniSat 2.0 (Feb 1 2007, SAT-Competition version)
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.00	c |  Number of variables:  90300                                                |
0.00/0.00	c |  Number of clauses:    179702                                               |
0.79/0.84	c |  Parsing time:         0.80         s                                       |
1.89/1.93	c restarts              : 0
1.89/1.93	c conflicts             : 0              (0 /sec)
1.89/1.93	c decisions             : 0              ( nan % random) (0 /sec)
1.89/1.93	c propagations          : 4              (2 /sec)
1.89/1.93	c conflict literals     : 0              ( nan % deleted)
1.89/1.93	c Memory used           : 38.27 MB
1.89/1.93	c CPU time              : 1.86772 s
1.89/1.93	c 
1.89/1.93	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/node37/watcher-421825-1177496403 -o ROOT/results/node37/solver-421825-1177496403 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/421825-1177496403/minisat_noassertions /tmp/evaluation/421825-1177496403/instance-421825-1177496403.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: 0.98 0.98 0.92 3/78 25226
/proc/meminfo: memFree=1960984/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=2476 CPUtime=0
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 531 0 0 0 0 0 0 0 18 0 1 0 197552819 2535424 517 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134549237 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 619 517 49 130 0 486 0

[startup+0.03814 s]
/proc/loadavg: 0.98 0.98 0.92 3/78 25226
/proc/meminfo: memFree=1960984/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=11252 CPUtime=0.03
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 2583 0 0 0 2 1 0 0 18 0 1 0 197552819 11522048 2552 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134549230 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 2813 2553 50 130 0 2680 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 11252

[startup+0.10215 s]
/proc/loadavg: 0.98 0.98 0.92 3/78 25226
/proc/meminfo: memFree=1960984/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=12928 CPUtime=0.09
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 3022 0 0 0 8 1 0 0 18 0 1 0 197552819 13238272 2991 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 3232 2991 50 130 0 3099 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 12928

[startup+0.301189 s]
/proc/loadavg: 0.98 0.98 0.92 3/78 25226
/proc/meminfo: memFree=1960984/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=16728 CPUtime=0.29
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 3929 0 0 0 27 2 0 0 19 0 1 0 197552819 17129472 3898 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 4182 3899 50 130 0 4049 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 16728

[startup+0.702263 s]
/proc/loadavg: 0.98 0.98 0.92 3/78 25226
/proc/meminfo: memFree=1960984/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=23300 CPUtime=0.69
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 5507 0 0 0 66 3 0 0 23 0 1 0 197552819 23859200 5476 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 5825 5476 50 130 0 5692 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 23300

[startup+1.50142 s]
/proc/loadavg: 0.98 0.98 0.92 2/79 25227
/proc/meminfo: memFree=1937360/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=32764 CPUtime=1.49
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 7802 0 0 0 144 5 0 0 25 0 1 0 197552819 33550336 7771 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 8191 7771 62 130 0 8058 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 32764

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

[startup+1.90149 s]
/proc/loadavg: 0.98 0.98 0.92 2/79 25227
/proc/meminfo: memFree=1937360/2055920 swapFree=4145428/4192956
[pid=25226] ppid=25224 vsize=38044 CPUtime=1.89
/proc/25226/stat : 25226 (minisat_noasser) R 25224 25226 24499 0 -1 4194304 9302 0 0 0 183 6 0 0 25 0 1 0 197552819 38957056 9271 18446744073709551615 134512640 135048876 4294956640 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 1 0 0
/proc/25226/statm: 9511 9272 62 130 0 9378 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 38044

Child status: 20
Real time (s): 1.94321
CPU time (s): 1.9417
CPU user time (s): 1.86772
CPU system time (s): 0.073988
CPU usage (%): 99.9223
Max. virtual memory (cumulated for all children) (KiB): 38044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.86772
system time used= 0.073988
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 9440
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= 42

runsolver used 0.003999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node37 on Wed Apr 25 10:20:04 UTC 2007

IDJOB= 421825
IDBENCH= 24728
IDSOLVER= 188
FILE ID= node37/421825-1177496403

PBS_JOBID= 4685836

Free space on /tmp= 66410 MiB

SOLVER NAME= minisat SAT 2007
BENCH NAME= HOME/pub/bench/SAT07/crafted/Difficult/contest05/sabharwal/grid-pebbling-unsat-grid-pbl-0300.sat05-1350.sat05-1350.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/421825-1177496403/minisat_noassertions /tmp/evaluation/421825-1177496403/instance-421825-1177496403.cnf
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node37/watcher-421825-1177496403 -o ROOT/results/node37/solver-421825-1177496403 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/421825-1177496403/minisat_noassertions /tmp/evaluation/421825-1177496403/instance-421825-1177496403.cnf

META MD5SUM SOLVER= 80cbedba287df00eb7b45eadedad758b
MD5SUM BENCH=  4c3b2816cb16b0fd4134bf2c85ce45d0

RANDOM SEED= 474715201

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node37.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		: 3000.281
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		: 3000.281
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:       1961392 kB
Buffers:          2592 kB
Cached:          26044 kB
SwapCached:      15292 kB
Active:          45784 kB
Inactive:         5924 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1961392 kB
SwapTotal:     4192956 kB
SwapFree:      4145428 kB
Dirty:            6296 kB
Writeback:           0 kB
Mapped:          30040 kB
Slab:            28172 kB
Committed_AS:  2081272 kB
PageTables:       2000 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= 66410 MiB

End job on node37 on Wed Apr 25 10:20:06 UTC 2007