Trace number 1523050

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
NCVWr 2009-03-22SAT 0.18897 0.188368

General information on the benchmark

NameRANDOM/MEDIUM/5SAT/SATISFIABLE/110/
unif-k5-r21.3-v110-c2343-S398733532-072.cnf
MD5SUMd9f4caf675a8f6d697dc5efdb9aa8c41
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.015996
Satisfiable
(Un)Satisfiability was proved
Number of variables110
Number of clauses2343
Sum of the clauses size11715
Maximum clause length5
Minimum clause length5
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 52343
Number of clauses of size over 50

Solver Data 

0.09/0.18	c try 1 flip j 21103
0.09/0.18	c A solution is found
0.09/0.18	s SATISFIABLE
0.09/0.18	v 1 -2 -3 4 -5 6 -7 8 -9 -10 -11 12 -13 -14 -15 16 17 18 -19 20 -21 -22 -23 24 -25 -26 -27 28 29 30 31 -32 33 34 -35 36 37 -38 -39 -40 41 -42 43 44 45 46 -47 48 -49 -50 -51 52 53 -54 55 56 57 -58 -59 -60 61 -62 -63 -64 65 -66 -67 -68 -69 -70 71 -72 -73 -74 -75 -76 -77 -78 79 -80 -81 82 83 84 -85 -86 -87 -88 -89 -90 -91 -92 93 -94 -95 96 97 98 99 100 101 102 -103 104 -105 106 -107 -108 109 -110 
0.09/0.18	v 0 
0.09/0.18	c Done (mycputime is 0.110 seconds)

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1523050-1238452024/watcher-1523050-1238452024 -o /tmp/evaluation-result-1523050-1238452024/solver-1523050-1238452024 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/NCVWr HOME/instance-1523050-1238452024.cnf 671283309 

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: 0.92 0.99 1.09 3/64 8750
/proc/meminfo: memFree=1461032/2055920 swapFree=4179368/4192956
[pid=8750] ppid=8748 vsize=411884 CPUtime=0
/proc/8750/stat : 8750 (NCVWr) R 8748 8750 8288 0 -1 4194304 116 0 0 0 0 0 0 0 18 0 1 0 1117868106 421769216 101 1992294400 134512640 135113558 4294956208 18446744073709551615 134619510 0 0 4096 0 0 0 0 17 1 0 0
/proc/8750/statm: 102971 101 55 146 0 101846 0

[startup+0.016216 s]
/proc/loadavg: 0.92 0.99 1.09 3/64 8750
/proc/meminfo: memFree=1461032/2055920 swapFree=4179368/4192956
[pid=8750] ppid=8748 vsize=412012 CPUtime=0.01
/proc/8750/stat : 8750 (NCVWr) R 8748 8750 8288 0 -1 4194304 165 0 0 0 1 0 0 0 18 0 1 0 1117868106 421900288 149 1992294400 134512640 135113558 4294956208 18446744073709551615 134526373 0 0 4096 0 0 0 0 17 1 0 0
/proc/8750/statm: 103003 149 55 146 0 101878 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 412012

[startup+0.101233 s]
/proc/loadavg: 0.92 0.99 1.09 3/64 8750
/proc/meminfo: memFree=1461032/2055920 swapFree=4179368/4192956
[pid=8750] ppid=8748 vsize=416048 CPUtime=0.09
/proc/8750/stat : 8750 (NCVWr) R 8748 8750 8288 0 -1 4194304 222 0 0 0 9 0 0 0 18 0 1 0 1117868106 426033152 206 1992294400 134512640 135113558 4294956208 18446744073709551615 134531443 0 0 4096 0 0 0 0 17 1 0 0
/proc/8750/statm: 104012 206 58 146 0 102887 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 416048

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

Child status: 10
Real time (s): 0.188368
CPU time (s): 0.18897
CPU user time (s): 0.184971
CPU system time (s): 0.003999
CPU usage (%): 100.32
Max. virtual memory (cumulated for all children) (KiB): 416048

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.184971
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= 237
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= 0

runsolver used 0.002999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node23 at 2009-03-31 00:27:04
IDJOB=1523050
IDBENCH=70414
IDSOLVER=531
FILE ID=node23/1523050-1238452024
PBS_JOBID= 9061654
Free space on /tmp= 66452 MiB

SOLVER NAME= NCVWr 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/5SAT/SATISFIABLE/110/unif-k5-r21.3-v110-c2343-S398733532-072.cnf
COMMAND LINE= HOME/NCVWr BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1523050-1238452024/watcher-1523050-1238452024 -o /tmp/evaluation-result-1523050-1238452024/solver-1523050-1238452024 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/NCVWr HOME/instance-1523050-1238452024.cnf 671283309

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

MD5SUM BENCH= d9f4caf675a8f6d697dc5efdb9aa8c41
RANDOM SEED=671283309

node23.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		: 3000.268
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		: 3000.268
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:       1461448 kB
Buffers:        106812 kB
Cached:         384016 kB
SwapCached:       7544 kB
Active:         181708 kB
Inactive:       318200 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1461448 kB
SwapTotal:     4192956 kB
SwapFree:      4179368 kB
Dirty:            4656 kB
Writeback:           0 kB
Mapped:          14804 kB
Slab:            80556 kB
Committed_AS:  3035468 kB
PageTables:       1396 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= 66448 MiB
End job on node23 at 2009-03-31 00:27:05