Trace number 1730365

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
MiniSat 2.1 (Sat-race'08 Edition)UNSAT 1.88971 1.89047

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 WARNING: for repeatability, setting FPU to use double precision
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.69/0.75	c |  Number of variables:         90300                                         |
0.69/0.75	c |  Number of clauses:          179700                                         |
0.69/0.75	c |  Parse time:                   0.72 s                                       |
1.79/1.88	c |  Simplification time:          1.13 s                                       |
1.79/1.88	c |                                                                             |
1.79/1.88	c ===============================================================================
1.79/1.88	c Solved by simplification
1.79/1.88	c restarts              : 0
1.79/1.88	c conflicts             : 0              (0 /sec)
1.79/1.88	c decisions             : 0              (0 /sec)
1.79/1.88	c propagations          : 4              (2 /sec)
1.79/1.88	c conflict literals     : 0              ( nan % deleted)
1.79/1.88	c Memory used           : 34.30 MB
1.79/1.88	c CPU time              : 1.84272 s
1.79/1.88	c 
1.79/1.88	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-1730365-1240758510/watcher-1730365-1240758510 -o /tmp/evaluation-result-1730365-1240758510/solver-1730365-1240758510 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/minisat HOME/instance-1730365-1240758510.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: 0.91 0.97 0.99 3/64 18299
/proc/meminfo: memFree=1631424/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=8188 CPUtime=0
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 540 0 0 0 0 0 0 0 18 0 1 0 103877167 8384512 524 1992294400 4194304 5092341 548682068832 18446744073709551615 4244968 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 2047 526 62 219 0 1825 0

[startup+0.032945 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 18299
/proc/meminfo: memFree=1631424/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=15888 CPUtime=0.02
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 2127 0 0 0 2 0 0 0 18 0 1 0 103877167 16269312 2089 1992294400 4194304 5092341 548682068832 18446744073709551615 4244968 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 3972 2091 62 219 0 3750 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 15888

[startup+0.101949 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 18299
/proc/meminfo: memFree=1631424/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=19632 CPUtime=0.09
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 3369 0 0 0 8 1 0 0 18 0 1 0 103877167 20103168 3331 1992294400 4194304 5092341 548682068832 18446744073709551615 4270245 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 4908 3331 63 219 0 4686 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 19632

[startup+0.301964 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 18299
/proc/meminfo: memFree=1631424/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=23132 CPUtime=0.29
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 4653 0 0 0 27 2 0 0 20 0 1 0 103877167 23687168 4513 1992294400 4194304 5092341 548682068832 18446744073709551615 4494759 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 5783 4513 63 219 0 5561 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 23132

[startup+0.701997 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 18299
/proc/meminfo: memFree=1631424/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=28252 CPUtime=0.69
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 6693 0 0 0 66 3 0 0 23 0 1 0 103877167 28930048 6326 1992294400 4194304 5092341 548682068832 18446744073709551615 4270144 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 7063 6326 63 219 0 6841 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 28252

[startup+1.50106 s]
/proc/loadavg: 0.91 0.97 0.99 2/65 18300
/proc/meminfo: memFree=1604856/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=32692 CPUtime=1.49
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 7629 0 0 0 146 3 0 0 25 0 1 0 103877167 33476608 7262 1992294400 4194304 5092341 548682068832 18446744073709551615 4270144 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 8173 7262 87 219 0 7951 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 32692

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

[startup+1.70108 s]
/proc/loadavg: 0.91 0.97 0.99 2/65 18300
/proc/meminfo: memFree=1604856/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=33908 CPUtime=1.69
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 8051 0 0 0 165 4 0 0 25 0 1 0 103877167 34721792 7684 1992294400 4194304 5092341 548682068832 18446744073709551615 4242192 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 8477 7684 87 219 0 8255 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 33908

[startup+1.80108 s]
/proc/loadavg: 0.91 0.97 0.99 2/65 18300
/proc/meminfo: memFree=1604856/2055920 swapFree=4177028/4192956
[pid=18299] ppid=18297 vsize=33908 CPUtime=1.79
/proc/18299/stat : 18299 (minisat) R 18297 18299 17784 0 -1 4194304 8183 0 0 0 175 4 0 0 25 0 1 0 103877167 34721792 7816 1992294400 4194304 5092341 548682068832 18446744073709551615 4270144 0 0 4096 3 0 0 0 17 1 0 0
/proc/18299/statm: 8477 7816 87 219 0 8255 0
Current children cumulated CPU time (s) 1.79
Current children cumulated vsize (KiB) 33908

Child status: 20
Real time (s): 1.89047
CPU time (s): 1.88971
CPU user time (s): 1.84272
CPU system time (s): 0.046992
CPU usage (%): 99.9597
Max. virtual memory (cumulated for all children) (KiB): 33908

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.84272
system time used= 0.046992
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8308
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= 8

runsolver used 0.004999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node69 at 2009-04-26 17:08:31
IDJOB=1730365
IDBENCH=24728
IDSOLVER=546
FILE ID=node69/1730365-1240758510
PBS_JOBID= 9187051
Free space on /tmp= 66376 MiB

SOLVER NAME= MiniSat 2.1 (Sat-race'08 Edition)
BENCH NAME= SAT07/crafted/Difficult/contest05/sabharwal/grid-pebbling-unsat-grid-pbl-0300.sat05-1350.sat05-1350.reshuffled-07.cnf
COMMAND LINE= HOME/minisat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1730365-1240758510/watcher-1730365-1240758510 -o /tmp/evaluation-result-1730365-1240758510/solver-1730365-1240758510 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/minisat HOME/instance-1730365-1240758510.cnf

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

MD5SUM BENCH= 4c3b2816cb16b0fd4134bf2c85ce45d0
RANDOM SEED=527894380

node69.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		: 3000.231
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		: 3000.231
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:       1631904 kB
Buffers:         58444 kB
Cached:         285728 kB
SwapCached:      10584 kB
Active:         177924 kB
Inactive:       179404 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1631904 kB
SwapTotal:     4192956 kB
SwapFree:      4177028 kB
Dirty:            5740 kB
Writeback:           0 kB
Mapped:          13740 kB
Slab:            52684 kB
Committed_AS:   329836 kB
PageTables:       1464 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= 66376 MiB
End job on node69 at 2009-04-26 17:08:33