Trace number 1730373

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
SAT07 reference solver: minisat SAT 2007UNSAT 1.87171 1.87162

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 benchmark1.61375
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 

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                                               |
0.79/0.81	c |  Parsing time:         0.78         s                                       |
1.79/1.86	c restarts              : 0
1.79/1.86	c conflicts             : 0              (0 /sec)
1.79/1.86	c decisions             : 0              ( nan % random) (0 /sec)
1.79/1.86	c propagations          : 4              (2 /sec)
1.79/1.86	c conflict literals     : 0              ( nan % deleted)
1.79/1.86	c Memory used           : 38.27 MB
1.79/1.86	c CPU time              : 1.81172 s
1.79/1.86	c 
1.79/1.86	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-1730373-1240758552/watcher-1730373-1240758552 -o /tmp/evaluation-result-1730373-1240758552/solver-1730373-1240758552 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/minisat_noassertions HOME/instance-1730373-1240758552.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: 1.95 1.94 1.63 3/64 28618
/proc/meminfo: memFree=1784768/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=2748 CPUtime=0
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 551 0 0 0 0 0 0 0 18 0 1 0 103881628 2813952 537 1992294400 134512640 135048876 4294956192 18446744073709551615 134686936 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 687 539 49 130 0 554 0

[startup+0.101372 s]
/proc/loadavg: 1.95 1.94 1.63 3/64 28618
/proc/meminfo: memFree=1784768/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=13096 CPUtime=0.09
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 3066 0 0 0 8 1 0 0 18 0 1 0 103881628 13410304 3035 1992294400 134512640 135048876 4294956192 18446744073709551615 134545599 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 3274 3035 50 130 0 3141 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 13096

[startup+0.201391 s]
/proc/loadavg: 1.95 1.94 1.63 3/64 28618
/proc/meminfo: memFree=1784768/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=15168 CPUtime=0.19
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 3551 0 0 0 18 1 0 0 19 0 1 0 103881628 15532032 3520 1992294400 134512640 135048876 4294956192 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 3792 3520 50 130 0 3659 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 15168

[startup+0.301411 s]
/proc/loadavg: 1.95 1.94 1.63 3/64 28618
/proc/meminfo: memFree=1784768/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=16860 CPUtime=0.29
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 3963 0 0 0 28 1 0 0 19 0 1 0 103881628 17264640 3932 1992294400 134512640 135048876 4294956192 18446744073709551615 134530821 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 4215 3932 50 130 0 4082 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 16860

[startup+0.701489 s]
/proc/loadavg: 1.95 1.94 1.63 3/64 28618
/proc/meminfo: memFree=1784768/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=23432 CPUtime=0.69
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 5563 0 0 0 66 3 0 0 23 0 1 0 103881628 23994368 5532 1992294400 134512640 135048876 4294956192 18446744073709551615 134531160 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 5858 5532 50 130 0 5725 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 23432

[startup+1.50165 s]
/proc/loadavg: 1.95 1.94 1.63 2/65 28619
/proc/meminfo: memFree=1759352/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=33424 CPUtime=1.49
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 7992 0 0 0 145 4 0 0 25 0 1 0 103881628 34226176 7961 1992294400 134512640 135048876 4294956192 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 8356 7961 62 130 0 8223 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 33424

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

[startup+1.60167 s]
/proc/loadavg: 1.95 1.94 1.63 2/65 28619
/proc/meminfo: memFree=1759352/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=34744 CPUtime=1.59
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 8381 0 0 0 155 4 0 0 25 0 1 0 103881628 35577856 8350 1992294400 134512640 135048876 4294956192 18446744073709551615 134533288 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 8686 8350 62 130 0 8553 0
Current children cumulated CPU time (s) 1.59
Current children cumulated vsize (KiB) 34744

[startup+1.80171 s]
/proc/loadavg: 1.95 1.94 1.63 2/65 28619
/proc/meminfo: memFree=1759352/2055920 swapFree=4181848/4192956
[pid=28618] ppid=28616 vsize=37648 CPUtime=1.79
/proc/28618/stat : 28618 (minisat_noasser) R 28616 28618 28275 0 -1 4194304 9171 0 0 0 174 5 0 0 25 0 1 0 103881628 38551552 9140 1992294400 134512640 135048876 4294956192 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 0 0 0
/proc/28618/statm: 9412 9140 62 130 0 9279 0
Current children cumulated CPU time (s) 1.79
Current children cumulated vsize (KiB) 37648

Child status: 20
Real time (s): 1.87162
CPU time (s): 1.87171
CPU user time (s): 1.81172
CPU system time (s): 0.05999
CPU usage (%): 100.005
Max. virtual memory (cumulated for all children) (KiB): 37648

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.81172
system time used= 0.05999
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= 2
involuntary context switches= 5

runsolver used 0.002999 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node66 at 2009-04-26 17:09:12
IDJOB=1730373
IDBENCH=24728
IDSOLVER=556
FILE ID=node66/1730373-1240758552
PBS_JOBID= 9187105
Free space on /tmp= 66320 MiB

SOLVER NAME= SAT07 reference solver: minisat SAT 2007
BENCH NAME= SAT07/crafted/Difficult/contest05/sabharwal/grid-pebbling-unsat-grid-pbl-0300.sat05-1350.sat05-1350.reshuffled-07.cnf
COMMAND LINE= HOME/minisat_noassertions BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1730373-1240758552/watcher-1730373-1240758552 -o /tmp/evaluation-result-1730373-1240758552/solver-1730373-1240758552 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/minisat_noassertions HOME/instance-1730373-1240758552.cnf

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

MD5SUM BENCH= 4c3b2816cb16b0fd4134bf2c85ce45d0
RANDOM SEED=918784854

node66.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		: 3000.263
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	: 5931.00
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		: 3000.263
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:       1785184 kB
Buffers:         30764 kB
Cached:         173760 kB
SwapCached:       5120 kB
Active:          22468 kB
Inactive:       190056 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1785184 kB
SwapTotal:     4192956 kB
SwapFree:      4181848 kB
Dirty:            6300 kB
Writeback:           0 kB
Mapped:          14008 kB
Slab:            44156 kB
Committed_AS:   503968 kB
PageTables:       1360 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= 66320 MiB
End job on node66 at 2009-04-26 17:09:14