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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
MD5SUM9e4c4999c6f95fcef879d3d86840d71a
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 34
Optimality of the best value was proved YES
Number of terms in the objective function 27
Biggest coefficient in the objective function 9
Number of bits for the biggest coefficient in the objective function 4
Sum of the numbers in the objective function 124
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 65
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 182
Number of bits of the biggest sum of numbers8
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.288955
Number of variables27
Total number of constraints47
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)27
Number of constraints which are nor clauses,nor cardinality constraints20
Minimum length of a constraint1
Maximum length of a constraint26

Trace number 3819

Launcher Data

LAUNCH ON wulflinc13 THE 2005-09-19 03:05:19 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2848 boxname=wulflinc13 idbench=504 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  9e4c4999c6f95fcef879d3d86840d71a  /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-bm23.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-bm23.opb
IDLAUNCH: 2848
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        854016 kB
Buffers:         35176 kB
Cached:         118204 kB
SwapCached:        708 kB
Active:          67308 kB
Inactive:        88700 kB
HighTotal:      131008 kB
HighFree:        43596 kB
LowTotal:       903652 kB
LowFree:        810420 kB
SwapTotal:     2097136 kB
SwapFree:      2095936 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5740 kB
Slab:            18928 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-19 03:05:51 (client local time) WITH STATUS 30 IN 31.6882 SECONDS
stats: 2848 0 31.6882 30

Solver Data

c Parsing PB file...
c Converting 20 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): (none)
c ---[  19]---> Sorter-cost:  678     Base: 2 2
c ---[  18]---> Sorter-cost:  689     Base: 3 2
c ---[  17]---> Sorter-cost:  686     Base: 3 2
c ---[  16]---> Sorter-cost:  475     Base: 3 3
c ---[  15]---> Sorter-cost:  776     Base: 3 2
c ---[  14]---> Sorter-cost:  514     Base: 3 2
c ---[  13]---> Sorter-cost:  494     Base: 2 2
c ---[  12]---> Sorter-cost:  661     Base: 3 2
c ---[  11]---> Sorter-cost:  521     Base: 2 3
c ---[  10]---> Sorter-cost:  165     Base: 2
c ---[   9]---> Sorter-cost:  587     Base: 2 3
c ---[   8]---> Sorter-cost:  562     Base: 2 2
c ---[   7]---> Sorter-cost:  635     Base: 2 2
c ---[   6]---> Sorter-cost:  470     Base: 3 3
c ---[   5]---> Sorter-cost:  583     Base: 2 3
c ---[   4]---> Sorter-cost:  547     Base: 3 2
c ---[   3]---> Sorter-cost:  323     Base: 3 2
c ---[   2]---> Sorter-cost:  477     Base: 2 2
c ---[   1]---> Sorter-cost:  613     Base: 2 2 2
c ---[   0]---> Sorter-cost:  530     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |   19873    46623 |    6624       0        0     nan |  0.000 % |
c |       102 |   19873    46623 |    7286     102     2443    24.0 |  0.232 % |
c |       252 |   19873    46623 |    8015     252     5446    21.6 |  0.232 % |
c |       478 |   19873    46623 |    8816     478    10041    21.0 |  0.231 % |
c |       815 |   19873    46623 |    9698     815    18385    22.6 |  0.231 % |
c ==============================================================================
c Found solution: 56
c ---[   0]---> Sorter-cost:  703     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      1306 |   21179    49678 |    7059    1306    28955    22.2 |  0.231 % |
c |      1407 |   21179    49678 |    7764    1407    31490    22.4 |  0.228 % |
c |      1557 |   21179    49678 |    8541    1557    34783    22.3 |  0.228 % |
c |      1784 |   21179    49678 |    9395    1784    39218    22.0 |  0.229 % |
c |      2123 |   21179    49678 |   10335    2123    47892    22.6 |  0.228 % |
c |      2629 |   21179    49678 |   11368    2629    60968    23.2 |  0.228 % |
c |      3392 |   21179    49678 |   12505    3392    82200    24.2 |  0.228 % |
c |      4531 |   21179    49678 |   13755    4531   114424    25.3 |  0.228 % |
c ==============================================================================
c Found solution: 55
c ---[   0]---> Sorter-cost:    2     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      4689 |   21190    49713 |    7063    4689   118099    25.2 |  0.228 % |
c |      4789 |   21190    49713 |    7769    4789   120288    25.1 |  0.239 % |
c |      4940 |   21190    49713 |    8546    4940   124042    25.1 |  0.239 % |
c |      5165 |   21190    49713 |    9400    5165   129504    25.1 |  0.239 % |
c |      5505 |   21190    49713 |   10340    5505   136992    24.9 |  0.239 % |
c ==============================================================================
c Found solution: 48
c ---[   0]---> Sorter-cost:    2     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      5973 |   21208    49761 |    7069    5973   150436    25.2 |  0.239 % |
c |      6073 |   21208    49761 |    7775    6073   153259    25.2 |  0.250 % |
c |      6223 |   21208    49761 |    8553    6223   157315    25.3 |  0.250 % |
c |      6448 |   21208    49761 |    9408    6448   163986    25.4 |  0.250 % |
c ==============================================================================
c Found solution: 45
c ---[   0]---> Sorter-cost:    1     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      6591 |   21213    49775 |    7071    6591   167843    25.5 |  0.250 % |
c |      6692 |   21213    49775 |    7778    6692   170216    25.4 |  0.261 % |
c |      6842 |   21213    49775 |    8555    6842   173791    25.4 |  0.261 % |
c |      7067 |   21213    49775 |    9411    7067   178477    25.3 |  0.261 % |
c |      7404 |   21213    49775 |   10352    7404   185776    25.1 |  0.261 % |
c |      7910 |   21213    49775 |   11387    7910   198125    25.0 |  0.260 % |
c ==============================================================================
c Found solution: 39
c ---[   0]---> Sorter-cost:    2     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      8134 |   21226    49807 |    7075    8134   204355    25.1 |  0.260 % |
c |      8235 |   21226    49807 |    7782    4168   100571    24.1 |  0.271 % |
c |      8385 |   21226    49807 |    8560    4318   104623    24.2 |  0.271 % |
c ==============================================================================
c Found solution: 37
c ---[   0]---> Sorter-cost:    1     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      8398 |   21231    49821 |    7077    4331   104903    24.2 |  0.271 % |
c |      8498 |   21231    49821 |    7784    4431   107306    24.2 |  0.282 % |
c |      8651 |   21231    49821 |    8563    4584   109439    23.9 |  0.282 % |
c |      8876 |   21231    49821 |    9419    4809   113165    23.5 |  0.282 % |
c |      9214 |   21231    49821 |   10361    5147   118064    22.9 |  0.282 % |
c |      9720 |   21231    49821 |   11397    5653   125121    22.1 |  0.282 % |
c ==============================================================================
c Found solution: 34
c ---[   0]---> Sorter-cost:    3     Base: 2 2
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |     10353 |   21236    49838 |    7078    6286   140504    22.4 |  0.282 % |
c |     10454 |   21236    49838 |    7785    6387   142965    22.4 |  0.293 % |
c |     10605 |   21236    49838 |    8564    6538   146788    22.5 |  0.293 % |
c |     10830 |   21236    49838 |    9420    6763   151820    22.4 |  0.293 % |
c |     11168 |   21236    49838 |   10362    7101   159017    22.4 |  0.292 % |
c |     11675 |   21236    49838 |   11399    7608   168410    22.1 |  0.292 % |
c ==============================================================================
c Optimal solution: 34
s OPTIMUM FOUND
v -C101_bit0 -C102_bit0 C103_bit0 -C104_bit0 C105_bit0 -C106_bit0 -C107_bit0 -C108_bit0 C109_bit0 -C110_bit0 -C111_bit0 -C112_bit0 -C113_bit0 -C114_bit0 C115_bit0 -C116_bit0 C117_bit0 -C118_bit0 -C119_bit0 C120_bit0 -C121_bit0 C122_bit0 -C123_bit0 -C124_bit0 -C125_bit0 -C126_bit0 C127_bit0
c _______________________________________________________________________________
c 
c restarts              : 43
c conflicts             : 12344          (391 /sec)
c decisions             : 19824          (628 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 31.5822 s
c _______________________________________________________________________________

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/10806/stat): 10806 (minisat+_script) R 10805 10806 1333 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1788310104 712704 3 4294967295 134512640 135087896 3221224512 3221224512 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10806/statm): 174 3 169 147 0 27 0
[pid=10806] vsize: 696
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libtermcap.so.2
open syscall for file tls/i686/libtermcap.so.2
open syscall for file tls/mmx/libtermcap.so.2
open syscall for file tls/libtermcap.so.2
open syscall for file i686/mmx/libtermcap.so.2
open syscall for file i686/libtermcap.so.2
open syscall for file mmx/libtermcap.so.2
open syscall for file libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/libtermcap.so.2
open syscall for file /etc/ld.so.cache
open syscall for file /lib/libtermcap.so.2
open syscall for file tls/i686/mmx/libdl.so.2
open syscall for file tls/i686/libdl.so.2
open syscall for file tls/mmx/libdl.so.2
open syscall for file tls/libdl.so.2
open syscall for file i686/mmx/libdl.so.2
open syscall for file i686/libdl.so.2
open syscall for file mmx/libdl.so.2
open syscall for file libdl.so.2
open syscall for file /oldhome/oroussel/lib/libdl.so.2
open syscall for file /lib/libdl.so.2
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6
open syscall for file /dev/tty
open syscall for file /etc/mtab
open syscall for file /proc/meminfo
open syscall for file /oldhome/oroussel/solvers/minisat+_script
New process pid=10807
New process pid=10808
New process pid=10809
execve syscall for /bin/sed executable
One traced child (pid=10808) exited with status: 0
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libc.so.6
One traced child (pid=10809) exited with status: 0
One traced child (pid=10807) exited with status: 0
New process pid=10810
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-bm23.opb

[startup+10.0033 s]
Raw data (loadavg): 0.74 0.82 0.92 2/57 10810
Raw data (/proc/10806/stat): 10806 (minisat+_script) S 10805 10806 1333 0 -1 0 289 239 0 0 0 1 0 0 21 0 1 0 1788310104 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/10806/statm): 531 226 485 147 0 384 0
[pid=10806] vsize: 2124
Raw data (/proc/10810/stat): 10810 (minisat+_64-bit) R 10806 10806 1333 0 -1 0 1057 0 0 0 987 5 0 0 25 0 1 0 1788310109 4907008 1004 4294967295 134512640 135094434 3221224432 3221223088 134557837 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/10810/statm): 1198 1004 145 145 0 1053 0
[pid=10810] vsize: 4792
Current children cumulated CPU time (s) 9.93
Current children cumulated vsize (Kb) 6916

[startup+20.004 s]
Raw data (loadavg): 0.78 0.83 0.92 2/57 10810
Raw data (/proc/10806/stat): 10806 (minisat+_script) S 10805 10806 1333 0 -1 0 289 239 0 0 0 1 0 0 21 0 1 0 1788310104 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/10806/statm): 531 226 485 147 0 384 0
[pid=10806] vsize: 2124
Raw data (/proc/10810/stat): 10810 (minisat+_64-bit) R 10806 10806 1333 0 -1 0 1202 0 0 0 1984 6 0 0 25 0 1 0 1788310109 5529600 1149 4294967295 134512640 135094434 3221224432 3221223088 134558395 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/10810/statm): 1350 1149 145 145 0 1205 0
[pid=10810] vsize: 5400
Current children cumulated CPU time (s) 19.91
Current children cumulated vsize (Kb) 7524

[startup+30.0046 s]
Raw data (loadavg): 0.81 0.83 0.92 2/57 10810
Raw data (/proc/10806/stat): 10806 (minisat+_script) S 10805 10806 1333 0 -1 0 289 239 0 0 0 1 0 0 21 0 1 0 1788310104 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/10806/statm): 531 226 485 147 0 384 0
[pid=10806] vsize: 2124
Raw data (/proc/10810/stat): 10810 (minisat+_64-bit) R 10806 10806 1333 0 -1 0 1224 0 0 0 2983 7 0 0 25 0 1 0 1788310109 5615616 1171 4294967295 134512640 135094434 3221224432 3221223088 134557937 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/10810/statm): 1371 1171 145 145 0 1226 0
[pid=10810] vsize: 5484
Current children cumulated CPU time (s) 29.91
Current children cumulated vsize (Kb) 7608
One traced child (pid=10810) exited with status: 30
One traced child (pid=10806) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 31.7668
CPU time (s): 31.6882
CPU user time (s): 31.5942
CPU system time (s): 0.093985
CPU usage (%): 99.7526
Max. virtual memory (cumulated for all children) (Kb): 7608

Verifier Data

Verifier:	OK	34