Trace number 362611

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 NameAnswerObjective functionCPU timeWall clock time
PBS4 2007-03-23UNSAT 0.861868 0.864237

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/plato.asu.edu/
pub/milp/normalized-reduced-mps-v2-20-10-neos17.opb
MD5SUM17ed6a127b27ec0fe0b994bf638e6a2f
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark0.725889
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables3115
Total number of constraints671
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints671
Minimum length of a constraint11
Maximum length of a constraint780
Number of terms in the objective function 2126
Biggest coefficient in the objective function 131254
Number of bits for the biggest coefficient in the objective function 18
Sum of the numbers in the objective function 525120
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 131254
Number of bits of the biggest number in a constraint 18
Biggest sum of numbers in a constraint 525120
Number of bits of the biggest sum of numbers20
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data (download as text)

0.00/0.00	c PBS v4 by Bashar Al-Rawi & Fadi Aloul
0.00/0.00	c Solving /tmp/evaluation/362611-1177015523/instance-362611-1177015523.opb ......
0.79/0.86	c done parsing opb.
0.79/0.86	s UNSATISFIABLE
0.79/0.86	c Total Run Time					0.447932

Verifier Data (download as text)

ERROR: no interpretation found !

Conversion Script Data (download as text)

/tmp/evaluation/362611-1177015523/instance-362611-1177015523.opb is already a linear file

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node9/watcher-362611-1177015523 -o ROOT/results/node9/solver-362611-1177015523 -C 1800 -W 3600 -M 1800 --output-limit 1,15 /tmp/evaluation/362611-1177015523/PBS4 /tmp/evaluation/362611-1177015523/instance-362611-1177015523.opb 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 3600 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 0.94 0.97 3/77 26670
/proc/meminfo: memFree=1860568/2055920 swapFree=4152812/4192956
[pid=26670] ppid=26668 vsize=1764 CPUtime=0
/proc/26670/stat : 26670 (PBS4) R 26668 26670 26514 0 -1 4194304 237 0 0 0 0 0 0 0 18 0 1 0 177589852 1806336 219 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135006597 0 0 4096 0 0 0 0 17 1 0 0
/proc/26670/statm: 441 220 86 219 0 218 0

[startup+0.0801359 s]
/proc/loadavg: 0.85 0.94 0.97 3/77 26670
/proc/meminfo: memFree=1860568/2055920 swapFree=4152812/4192956
[pid=26670] ppid=26668 vsize=2172 CPUtime=0.07
/proc/26670/stat : 26670 (PBS4) R 26668 26670 26514 0 -1 4194304 345 0 0 0 7 0 0 0 18 0 1 0 177589852 2224128 327 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134518600 0 0 4096 0 0 0 0 17 1 0 0
/proc/26670/statm: 543 327 87 219 0 320 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 2172

[startup+0.101139 s]
/proc/loadavg: 0.85 0.94 0.97 3/77 26670
/proc/meminfo: memFree=1860568/2055920 swapFree=4152812/4192956
[pid=26670] ppid=26668 vsize=2576 CPUtime=0.09
/proc/26670/stat : 26670 (PBS4) R 26668 26670 26514 0 -1 4194304 432 0 0 0 9 0 0 0 18 0 1 0 177589852 2637824 414 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135057389 0 0 4096 0 0 0 0 17 1 0 0
/proc/26670/statm: 644 414 87 219 0 421 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2576

[startup+0.301161 s]
/proc/loadavg: 0.85 0.94 0.97 3/77 26670
/proc/meminfo: memFree=1860568/2055920 swapFree=4152812/4192956
[pid=26670] ppid=26668 vsize=4180 CPUtime=0.29
/proc/26670/stat : 26670 (PBS4) R 26668 26670 26514 0 -1 4194304 851 0 0 0 29 0 0 0 19 0 1 0 177589852 4280320 833 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134529735 0 0 4096 0 0 0 0 17 1 0 0
/proc/26670/statm: 1045 833 87 219 0 822 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 4180

[startup+0.701207 s]
/proc/loadavg: 0.85 0.94 0.97 3/77 26670
/proc/meminfo: memFree=1860568/2055920 swapFree=4152812/4192956
[pid=26670] ppid=26668 vsize=4468 CPUtime=0.69
/proc/26670/stat : 26670 (PBS4) R 26668 26670 26514 0 -1 4194304 937 0 0 0 69 0 0 0 22 0 1 0 177589852 4575232 845 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134548514 0 0 4096 16384 0 0 0 17 1 0 0
/proc/26670/statm: 1117 845 93 219 0 894 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 4468

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

[startup+0.801218 s]
/proc/loadavg: 0.85 0.94 0.97 3/77 26670
/proc/meminfo: memFree=1860568/2055920 swapFree=4152812/4192956
[pid=26670] ppid=26668 vsize=4468 CPUtime=0.79
/proc/26670/stat : 26670 (PBS4) R 26668 26670 26514 0 -1 4194304 937 0 0 0 79 0 0 0 23 0 1 0 177589852 4575232 845 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134548019 0 0 4096 16384 0 0 0 17 1 0 0
/proc/26670/statm: 1117 845 93 219 0 894 0
Current children cumulated CPU time (s) 0.79
Current children cumulated vsize (KiB) 4468

Child status: 0
Real time (s): 0.864237
CPU time (s): 0.861868
CPU user time (s): 0.857869
CPU system time (s): 0.003999
CPU usage (%): 99.7259
Max. virtual memory (cumulated for all children) (KiB): 4468

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.857869
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= 951
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= 0

runsolver used 0.002999 second user time and 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node9 on Thu Apr 19 20:45:23 UTC 2007

IDJOB= 362611
IDBENCH= 1595
IDSOLVER= 157
FILE ID= node9/362611-1177015523

PBS_JOBID= 4630575

Free space on /tmp= 66427 MiB

SOLVER NAME= PBS4 2007-03-23
BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/plato.asu.edu/pub/milp/normalized-reduced-mps-v2-20-10-neos17.opb
COMMAND LINE= /tmp/evaluation/362611-1177015523/PBS4 /tmp/evaluation/362611-1177015523/instance-362611-1177015523.opb            
CONVERSION COMMAND LINE= runsolver -w ROOT/results/node9/convwatcher-362611-1177015523 -o ROOT/results/node9/conversion-362611-1177015523 -C 600 -M 1800 PBconversionToLinear /tmp/evaluation/362611-1177015523/instance-362611-1177015523.opb
CONVERSION RUNSOLVER STATUS CODE= 0
CONVERSION STATUS CODE= 0

RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node9/watcher-362611-1177015523 -o ROOT/results/node9/solver-362611-1177015523 -C 1800 -W 3600 -M 1800 --output-limit 1,15  /tmp/evaluation/362611-1177015523/PBS4 /tmp/evaluation/362611-1177015523/instance-362611-1177015523.opb            

META MD5SUM SOLVER= b6c24e28fef9e1efa7891be58ea9e46f
MD5SUM BENCH=  17ed6a127b27ec0fe0b994bf638e6a2f

RANDOM SEED= 156290086

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB

Linux node9.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		: 3000.221
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		: 3000.221
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:       1860976 kB
Buffers:         26788 kB
Cached:         106020 kB
SwapCached:       7816 kB
Active:          36812 kB
Inactive:       118640 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1860976 kB
SwapTotal:     4192956 kB
SwapFree:      4152812 kB
Dirty:            2080 kB
Writeback:           0 kB
Mapped:          29724 kB
Slab:            25012 kB
Committed_AS:  6070220 kB
PageTables:       1784 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= 66427 MiB

End job on node9 on Thu Apr 19 20:45:24 UTC 2007