Trace number 313388

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
KCNFS 2006? (exit code) 1.9717 1.97345

General information on the benchmark

Nameindustrial/anbulagan/
hard-unsat/total-10-17-u.cnf
MD5SUM9ce7c48a28ddd5790e38607bb893dd38
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables293864
Number of clauses1370917
Sum of the clauses size3163902
Maximum clause length10
Minimum clause length1
Number of clauses of size 124516
Number of clauses of size 21065117
Number of clauses of size 3226184
Number of clauses of size 46120
Number of clauses of size 524480
Number of clauses of size over 524500

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/313388-1176884225/kcnfs-2006   V. 1.2
0.00/0.00	c reading file ... done
1.89/1.95	c this formula cannot been solved by kcnfs
1.89/1.95

Verifier Data (download as text)

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer:

Watcher Data (download as text)

runsolver version 3.2.2 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node18/watcher-313388-1176884225 -o ROOT/results/node18/solver-313388-1176884225 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/313388-1176884225/kcnfs-2006 /tmp/evaluation/313388-1176884225/instance-313388-1176884225.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: 0.85 0.97 0.99 3/77 2715
/proc/meminfo: memFree=1613688/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=180908 CPUtime=0
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 126 0 0 0 0 0 0 0 18 0 1 0 136339864 185249792 111 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 45227 112 47 158 0 45067 0

[startup+0.0521449 s]
/proc/loadavg: 0.85 0.97 0.99 3/77 2715
/proc/meminfo: memFree=1613688/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=183680 CPUtime=0.04
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 808 0 0 0 4 0 0 0 18 0 1 0 136339864 188088320 793 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134832765 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 45920 794 47 158 0 45760 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 183680

[startup+0.101149 s]
/proc/loadavg: 0.85 0.97 0.99 3/77 2715
/proc/meminfo: memFree=1613688/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=186452 CPUtime=0.09
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 1507 0 0 0 9 0 0 0 18 0 1 0 136339864 190926848 1492 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 46613 1493 47 158 0 46453 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 186452

[startup+0.301168 s]
/proc/loadavg: 0.85 0.97 0.99 3/77 2715
/proc/meminfo: memFree=1613688/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=197408 CPUtime=0.29
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 4232 0 0 0 28 1 0 0 19 0 1 0 136339864 202145792 4217 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 49352 4218 47 158 0 49192 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 197408

[startup+0.701208 s]
/proc/loadavg: 0.85 0.97 0.99 3/77 2715
/proc/meminfo: memFree=1613688/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=218924 CPUtime=0.69
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 9611 0 0 0 66 3 0 0 23 0 1 0 136339864 224178176 9596 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 54731 9596 47 158 0 54571 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 218924

[startup+1.50128 s]
/proc/loadavg: 0.85 0.97 0.99 2/78 2716
/proc/meminfo: memFree=1559536/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=262880 CPUtime=1.49
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 20613 0 0 0 141 8 0 0 25 0 1 0 136339864 269189120 20598 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 65720 20599 47 158 0 65560 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 262880

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

[startup+1.90132 s]
/proc/loadavg: 0.85 0.97 0.99 2/78 2716
/proc/meminfo: memFree=1559536/2055920 swapFree=4142944/4192956
[pid=2715] ppid=2713 vsize=283604 CPUtime=1.89
/proc/2715/stat : 2715 (kcnfs-2006) R 2713 2715 1891 0 -1 4194304 25797 0 0 0 179 10 0 0 25 0 1 0 136339864 290410496 25782 18446744073709551615 134512640 135163436 4294956656 18446744073709551615 134811879 0 0 4096 0 0 0 0 17 1 0 0
/proc/2715/statm: 70901 25783 47 158 0 70741 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 283604

Child status: 1
Real time (s): 1.97345
CPU time (s): 1.9717
CPU user time (s): 1.84872
CPU system time (s): 0.122981
CPU usage (%): 99.9111
Max. virtual memory (cumulated for all children) (KiB): 283604

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.84872
system time used= 0.122981
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 26511
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= 41

runsolver used 0.000999 second user time and 0.009998 second system time

The end

Launcher Data (download as text)

Begin job on node18 on Wed Apr 18 08:17:05 UTC 2007

IDJOB= 313388
IDBENCH= 20365
IDSOLVER= 113
FILE ID= node18/313388-1176884225

PBS_JOBID= 4590315

Free space on /tmp= 66483 MiB

SOLVER NAME= KCNFS 2006
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/hard-unsat/total-10-17-u.cnf
COMMAND LINE= /tmp/evaluation/313388-1176884225/kcnfs-2006 /tmp/evaluation/313388-1176884225/instance-313388-1176884225.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node18/watcher-313388-1176884225 -o ROOT/results/node18/solver-313388-1176884225 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/313388-1176884225/kcnfs-2006 /tmp/evaluation/313388-1176884225/instance-313388-1176884225.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  9ce7c48a28ddd5790e38607bb893dd38

RANDOM SEED= 244255561

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node18.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		: 3000.234
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	: 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		: 3000.234
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:       1614096 kB
Buffers:         39624 kB
Cached:         310300 kB
SwapCached:      18364 kB
Active:          94404 kB
Inactive:       282680 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1614096 kB
SwapTotal:     4192956 kB
SwapFree:      4142944 kB
Dirty:           28196 kB
Writeback:           0 kB
Mapped:          29936 kB
Slab:            50224 kB
Committed_AS:  4331520 kB
PageTables:       1776 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= 66483 MiB

End job on node18 on Wed Apr 18 08:17:07 UTC 2007