Trace number 296562

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 2004UNSAT 26.492 26.5007

General information on the benchmark

Namerandom/OnTreshold/7SAT/v45/
unif-k7-r89-v45-c4005-S1392532406-12.UNSAT.shuffled.cnf
MD5SUMaca6cad74270d95cd75e3239f6304512
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark20.4519
Satisfiable
(Un)Satisfiability was proved
Number of variables45
Number of clauses4005
Sum of the clauses size28035
Maximum clause length7
Minimum clause length7
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 54005

Solver Data (download as text)

0.00/0.00	
0.00/0.02	c Computed by /tmp/evaluation/296562-1171825102/kcnfs-2004   V. 03/02/12
0.00/0.02	c Input file : '/tmp/evaluation/296562-1171825102/instance-296562-1171825102.cnf'
26.41/26.49	c [45 variables, 4005 clauses, ratio 89.00, mean occ 311, 7-SAT]
26.41/26.49	s UNSATISFIABLE
26.41/26.49	c Computation time    : 26.470 seconds
26.41/26.49	c Execution time      : 26.490 seconds
26.41/26.49	c Size of search tree : 89065 nodes
26.41/26.49

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node38/watcher-296562-1171825102 -o ROOT/results/node38/solver-296562-1171825102 -C 1200 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/296562-1171825102/kcnfs-2004 /tmp/evaluation/296562-1171825102/instance-296562-1171825102.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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
Using a pseudo terminal to collect output from the solver
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.50 1.31 1.11 3/64 21456
/proc/meminfo: memFree=851880/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=16020 CPUtime=0
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 94 0 0 0 0 0 0 0 18 0 1 0 202466024 16404480 74 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134614467 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4005 74 38 107 0 3894 0

[startup+0.107343 s]
/proc/loadavg: 2.50 1.31 1.11 3/64 21456
/proc/meminfo: memFree=851880/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=0.1
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 861 0 0 0 10 0 0 0 18 0 1 0 202466024 18972672 840 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134528267 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 840 60 107 0 4521 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 18528

[startup+0.515387 s]
/proc/loadavg: 2.50 1.31 1.11 3/64 21456
/proc/meminfo: memFree=851880/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=0.51
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 861 0 0 0 51 0 0 0 21 0 1 0 202466024 18972672 840 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134571642 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 840 60 107 0 4521 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 18528

[startup+1.33548 s]
/proc/loadavg: 2.50 1.31 1.11 2/65 21457
/proc/meminfo: memFree=848736/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=1.33
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 861 0 0 0 133 0 0 0 25 0 1 0 202466024 18972672 840 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134581048 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 840 60 107 0 4521 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 18528

[startup+2.97167 s]
/proc/loadavg: 2.38 1.31 1.11 2/65 21457
/proc/meminfo: memFree=848608/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=2.96
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 862 0 0 0 296 0 0 0 25 0 1 0 202466024 18972672 841 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134539913 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 841 60 107 0 4521 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 18528

[startup+6.25304 s]
/proc/loadavg: 2.38 1.31 1.11 2/65 21457
/proc/meminfo: memFree=848544/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=6.24
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 862 0 0 0 624 0 0 0 25 0 1 0 202466024 18972672 841 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134580466 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 841 60 107 0 4521 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 18528

[startup+12.7078 s]
/proc/loadavg: 2.17 1.30 1.10 2/65 21457
/proc/meminfo: memFree=848512/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=12.7
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 862 0 0 0 1270 0 0 0 25 0 1 0 202466024 18972672 841 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134528695 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 841 60 107 0 4521 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 18528

[startup+25.6092 s]
/proc/loadavg: 1.99 1.29 1.10 2/65 21457
/proc/meminfo: memFree=848512/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=25.59
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 862 0 0 0 2559 0 0 0 25 0 1 0 202466024 18972672 841 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134528631 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 841 60 107 0 4521 0
Current children cumulated CPU time (s) 25.59
Current children cumulated vsize (KiB) 18528

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

[startup+26.2253 s]
/proc/loadavg: 1.99 1.29 1.10 2/65 21457
/proc/meminfo: memFree=848512/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=26.21
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 862 0 0 0 2621 0 0 0 25 0 1 0 202466024 18972672 841 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134538181 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 841 60 107 0 4521 0
Current children cumulated CPU time (s) 26.21
Current children cumulated vsize (KiB) 18528

[startup+26.4293 s]
/proc/loadavg: 1.99 1.29 1.10 2/65 21457
/proc/meminfo: memFree=848512/2055920 swapFree=4183804/4192956
[pid=21456] ppid=21454 vsize=18528 CPUtime=26.41
/proc/21456/stat : 21456 (kcnfs-2004) R 21454 21456 21295 0 -1 0 862 0 0 0 2641 0 0 0 25 0 1 0 202466024 18972672 841 18446744073709551615 134512640 134953336 4294956624 18446744073709551615 134533467 0 0 4096 0 0 0 0 17 1 0 0
/proc/21456/statm: 4632 841 60 107 0 4521 0
Current children cumulated CPU time (s) 26.41
Current children cumulated vsize (KiB) 18528

Child status: 20
Real time (s): 26.5007
CPU time (s): 26.492
CPU user time (s): 26.488
CPU system time (s): 0.003999
CPU usage (%): 99.9671
Max. virtual memory (cumulated for all children) (KiB): 18528

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 26.488
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 862
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= 37

runsolver used 0.014997 second user time and 0.06299 second system time

The end

Launcher Data (download as text)

Begin job on node38 on Sun Feb 18 18:58:22 UTC 2007

IDJOB= 296562
IDBENCH= 19940
IDSOLVER= 114
FILE ID= node38/296562-1171825102

PBS_JOBID= 3839655

Free space on /tmp= 66561 MiB

SOLVER NAME= KCNFS 2004
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/7SAT/v45/unif-k7-r89-v45-c4005-S1392532406-12.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/296562-1171825102/kcnfs-2004 /tmp/evaluation/296562-1171825102/instance-296562-1171825102.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node38/watcher-296562-1171825102 -o ROOT/results/node38/solver-296562-1171825102 -C 1200 -M 1800 --output-limit 1,15 --use-pty /tmp/evaluation/296562-1171825102/kcnfs-2004 /tmp/evaluation/296562-1171825102/instance-296562-1171825102.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  aca6cad74270d95cd75e3239f6304512

RANDOM SEED= 243555435

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node38.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		: 3000.233
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		: 3000.233
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:        852352 kB
Buffers:         42388 kB
Cached:        1037980 kB
SwapCached:       3416 kB
Active:         818048 kB
Inactive:       272108 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        852352 kB
SwapTotal:     4192956 kB
SwapFree:      4183804 kB
Dirty:            3360 kB
Writeback:           0 kB
Mapped:          15336 kB
Slab:            99356 kB
Committed_AS:   434824 kB
PageTables:       1468 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= 66561 MiB

End job on node38 on Sun Feb 18 18:58:49 UTC 2007