Trace number 458467

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_v2 2007-03-23UNSAT 11.1553 11.1604

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-neos12.opb
MD5SUMa0b6152dd8614459e798b375ad9ceb75
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 benchmark1.40978
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables22960
Total number of constraints8611
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 constraints8611
Minimum length of a constraint11
Maximum length of a constraint840
Number of terms in the objective function 13440
Biggest coefficient in the objective function 586
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 535808
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 262144
Number of bits of the biggest number in a constraint 19
Biggest sum of numbers in a constraint 535808
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/458467-1178625106/instance-458467-1178625106.opb ......
11.08/11.15	c done parsing opb.
11.08/11.15	s UNSATISFIABLE
11.08/11.15	c Total Run Time					9.10762

Verifier Data (download as text)

ERROR: no interpretation found !

Conversion Script Data (download as text)

/tmp/evaluation/458467-1178625106/instance-458467-1178625106.opb is already a linear file

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node75/watcher-458467-1178625106 -o ROOT/results/node75/solver-458467-1178625106 -C 1800 -W 3600 -M 1800 --output-limit 1,15 PBS4_SAT07v2 /tmp/evaluation/458467-1178625106/instance-458467-1178625106.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: 0.91 0.95 0.96 3/64 27384
/proc/meminfo: memFree=1623104/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=3480 CPUtime=0
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 511 0 0 0 0 0 0 0 20 0 1 0 310424547 3563520 493 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134570671 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 870 498 79 219 0 647 0

[startup+0.0800609 s]
/proc/loadavg: 0.91 0.95 0.96 3/64 27384
/proc/meminfo: memFree=1623104/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=5252 CPUtime=0.07
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 1089 0 0 0 7 0 0 0 20 0 1 0 310424547 5378048 1071 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134586450 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 1313 1071 86 219 0 1090 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 5252

[startup+0.10106 s]
/proc/loadavg: 0.91 0.95 0.96 3/64 27384
/proc/meminfo: memFree=1623104/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=5252 CPUtime=0.09
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 1089 0 0 0 9 0 0 0 20 0 1 0 310424547 5378048 1071 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134586381 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 1313 1071 86 219 0 1090 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 5252

[startup+0.301098 s]
/proc/loadavg: 0.91 0.95 0.96 3/64 27384
/proc/meminfo: memFree=1623104/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=5252 CPUtime=0.29
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 1089 0 0 0 29 0 0 0 22 0 1 0 310424547 5378048 1071 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134586474 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 1313 1071 86 219 0 1090 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 5252

[startup+0.701179 s]
/proc/loadavg: 0.91 0.95 0.96 3/64 27384
/proc/meminfo: memFree=1623104/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=5464 CPUtime=0.69
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 1142 0 0 0 69 0 0 0 25 0 1 0 310424547 5595136 1124 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134587091 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 1366 1124 86 219 0 1143 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 5464

[startup+1.50134 s]
/proc/loadavg: 0.91 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1617976/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=11088 CPUtime=1.49
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 3342 0 0 0 148 1 0 0 25 0 1 0 310424547 11354112 2484 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134530019 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 2772 2484 86 219 0 2549 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 11088

[startup+3.10165 s]
/proc/loadavg: 0.91 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1607800/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=18764 CPUtime=3.09
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 5395 0 0 0 307 2 0 0 25 0 1 0 310424547 19214336 3816 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134557444 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 4691 3816 90 219 0 4468 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 18764

[startup+6.30129 s]
/proc/loadavg: 0.92 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1607608/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=18764 CPUtime=6.29
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 5415 0 0 0 627 2 0 0 25 0 1 0 310424547 19214336 3836 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134545629 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 4691 3836 90 219 0 4468 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 18764

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

[startup+9.50192 s]
/proc/loadavg: 0.92 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1607616/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=18764 CPUtime=9.48
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 5443 0 0 0 946 2 0 0 25 0 1 0 310424547 19214336 3864 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134557319 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 4691 3864 90 219 0 4468 0
Current children cumulated CPU time (s) 9.48
Current children cumulated vsize (KiB) 18764

[startup+10.3011 s]
/proc/loadavg: 0.93 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1607616/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=18764 CPUtime=10.28
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 5449 0 0 0 1026 2 0 0 25 0 1 0 310424547 19214336 3870 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134545575 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 4691 3870 90 219 0 4468 0
Current children cumulated CPU time (s) 10.28
Current children cumulated vsize (KiB) 18764

[startup+10.7012 s]
/proc/loadavg: 0.93 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1607616/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=18764 CPUtime=10.68
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 5452 0 0 0 1066 2 0 0 25 0 1 0 310424547 19214336 3873 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134557367 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 4691 3873 90 219 0 4468 0
Current children cumulated CPU time (s) 10.68
Current children cumulated vsize (KiB) 18764

[startup+11.1012 s]
/proc/loadavg: 0.93 0.95 0.96 2/65 27385
/proc/meminfo: memFree=1607616/2055920 swapFree=4183972/4192956
[pid=27384] ppid=27382 vsize=19020 CPUtime=11.08
/proc/27384/stat : 27384 (PBS4_SAT07v2) R 27382 27384 26875 0 -1 4194304 5456 0 0 0 1106 2 0 0 25 0 1 0 310424547 19476480 3877 18446744073709551615 134512640 135410602 4294956672 18446744073709551615 134545564 0 0 4096 16384 0 0 0 17 1 0 0
/proc/27384/statm: 4755 3877 90 219 0 4532 0
Current children cumulated CPU time (s) 11.08
Current children cumulated vsize (KiB) 19020

Child status: 0
Real time (s): 11.1604
CPU time (s): 11.1553
CPU user time (s): 11.1233
CPU system time (s): 0.031995
CPU usage (%): 99.9544
Max. virtual memory (cumulated for all children) (KiB): 19020

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 11.1233
system time used= 0.031995
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5472
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= 6

runsolver used 0.006998 second user time and 0.029995 second system time

The end

Launcher Data (download as text)

Begin job on node75 on Tue May  8 11:51:47 UTC 2007

IDJOB= 458467
IDBENCH= 1579
IDSOLVER= 200
FILE ID= node75/458467-1178625106

PBS_JOBID= 5218279

Free space on /tmp= 66559 MiB

SOLVER NAME= PBS4_v2 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-neos12.opb
COMMAND LINE= PBS4_SAT07v2 /tmp/evaluation/458467-1178625106/instance-458467-1178625106.opb
CONVERSION COMMAND LINE= runsolver -w ROOT/results/node75/convwatcher-458467-1178625106 -o ROOT/results/node75/conversion-458467-1178625106 -C 600 -M 1800 PBconversionToLinear /tmp/evaluation/458467-1178625106/instance-458467-1178625106.opb
CONVERSION RUNSOLVER STATUS CODE= 0
CONVERSION STATUS CODE= 0

RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node75/watcher-458467-1178625106 -o ROOT/results/node75/solver-458467-1178625106 -C 1800 -W 3600 -M 1800 --output-limit 1,15  PBS4_SAT07v2 /tmp/evaluation/458467-1178625106/instance-458467-1178625106.opb

META MD5SUM SOLVER= 18cd8c68a4d3bfb01f29079966475a33
MD5SUM BENCH=  a0b6152dd8614459e798b375ad9ceb75

RANDOM SEED= 896535706

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB

Linux node75.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		: 3000.257
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		: 3000.257
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1623512 kB
Buffers:         35784 kB
Cached:         300076 kB
SwapCached:       2848 kB
Active:          92400 kB
Inactive:       256660 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1623512 kB
SwapTotal:     4192956 kB
SwapFree:      4183972 kB
Dirty:            5168 kB
Writeback:           0 kB
Mapped:          19188 kB
Slab:            69244 kB
Committed_AS:  3405156 kB
PageTables:       1440 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= 66559 MiB

End job on node75 on Tue May  8 11:51:58 UTC 2007