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/miplib3/normalized-mps-v2-20-10-stein45.opb
MD5SUM5c72b08d2dc855d07dab2f619386e796
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 30
Optimality of the best value was proved YES
Number of terms in the objective function 45
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 45
Number of bits of the sum of numbers in the objective function 6
Biggest number in a constraint 22
Number of bits of the biggest number in a constraint 5
Biggest sum of numbers in a constraint 67
Number of bits of the biggest sum of numbers7
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark78.753
Number of variables45
Total number of constraints376
Number of constraints which are clauses330
Number of constraints which are cardinality constraints (but not clauses)46
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint45

Trace number 4521

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-19 18:13:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3011 boxname=wulflinc27 idbench=667 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  5c72b08d2dc855d07dab2f619386e796  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-stein45.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-stein45.opb
IDLAUNCH: 3011
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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	: 3
cpu MHz		: 451.169
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        875800 kB
Buffers:         33824 kB
Cached:          92584 kB
SwapCached:        752 kB
Active:          69084 kB
Inactive:        59916 kB
HighTotal:      131008 kB
HighFree:        42980 kB
LowTotal:       903652 kB
LowFree:        832820 kB
SwapTotal:     2097892 kB
SwapFree:      2096628 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5728 kB
Slab:            24164 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 18:15:13 (client local time) WITH STATUS 30 IN 78.753 SECONDS
stats: 3011 0 78.753 30

Solver Data

c Parsing PB file...
c Converting 331 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): ..........................................................................................................................................................................................................................................................................................................................................
c ---[   0]---> Sorter-cost:  718     Base:
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |    1097     2792 |     365       0        0     nan |  0.000 % |
c ==============================================================================
c Found solution: 40
c ---[   0]---> Sorter-cost:  288     Base:
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |    1772     4390 |     590       0        0     nan |  0.000 % |
c ==============================================================================
c Found solution: 32
c ---[   0]---> Sorter-cost:    0     Base:
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |        23 |    1816     4508 |     605      20       64     3.2 |  0.000 % |
c |       123 |    1816     4508 |     665     120      689     5.7 |  2.393 % |
c |       274 |    1816     4508 |     732     271     3236    11.9 |  2.397 % |
c |       500 |    1798     4467 |     805     492     5424    11.0 |  3.140 % |
c ==============================================================================
c Found solution: 31
c ---[   0]---> Sorter-cost:    0     Base:
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |       795 |    1767     4396 |     589     686     8277    12.1 |  3.140 % |
c |       895 |    1767     4396 |     647     443     5567    12.6 |  5.218 % |
c |      1046 |    1767     4396 |     712     594     8074    13.6 |  5.217 % |
c |      1272 |    1767     4396 |     783     820    11824    14.4 |  5.217 % |
c |      1609 |    1767     4396 |     862     747    10448    14.0 |  5.217 % |
c |      2115 |    1767     4396 |     948     731     9638    13.2 |  5.217 % |
c |      2875 |    1767     4396 |    1043     897    12141    13.5 |  5.220 % |
c |      4015 |    1737     4327 |    1147     800     9680    12.1 |  6.561 % |
c |      5724 |    1727     4304 |    1262    1086    14126    13.0 |  7.006 % |
c ==============================================================================
c Found solution: 30
c ---[   0]---> Sorter-cost:    0     Base:
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |      6467 |    1739     4339 |     579    1073    13099    12.2 |  7.006 % |
c |      6569 |    1739     4339 |     636     639     7004    11.0 |  7.618 % |
c |      6720 |    1739     4339 |     700     790     8964    11.3 |  7.615 % |
c |      6945 |    1725     4308 |     770     617     6606    10.7 |  8.639 % |
c |      7285 |    1725     4308 |     847     957    10581    11.1 |  8.639 % |
c |      7793 |    1725     4308 |     932     987    10702    10.8 |  8.639 % |
c |      8552 |    1725     4308 |    1025     610     5731     9.4 |  8.641 % |
c |      9692 |    1712     4280 |    1128    1107    13530    12.2 |  9.373 % |
c |     11401 |    1712     4280 |    1241     767     7436     9.7 |  9.373 % |
c |     13963 |    1686     4221 |    1365    1103    13068    11.8 | 10.692 % |
c |     17808 |    1686     4221 |    1501     910    10940    12.0 | 10.692 % |
c |     23574 |    1686     4221 |    1651    1369    16394    12.0 | 10.690 % |
c |     32224 |    1668     4181 |    1817    1315    15734    12.0 | 11.717 % |
c |     45198 |    1668     4181 |    1998    1834    27233    14.8 | 11.717 % |
c |     64659 |    1668     4181 |    2198    2067    25922    12.5 | 11.720 % |
c |     93851 |    1668     4181 |    2418    1642    19947    12.1 | 11.720 % |
c |    137640 |    1668     4181 |    2660    2416    30430    12.6 | 11.742 % |
c |    203325 |    1614     4041 |    2926    2763    37369    13.5 | 13.332 % |
c |    301851 |    1331     3332 |    3219    1835    18651    10.2 | 23.574 % |
c ==============================================================================
c Optimal solution: 30
s OPTIMUM FOUND
v V0001_bit0 V0002_bit0 V0003_bit0 V0004_bit0 V0005_bit0 V0006_bit0 V0007_bit0 -V0008_bit0 V0009_bit0 V0010_bit0 V0011_bit0 V0012_bit0 -V0013_bit0 -V0014_bit0 V0015_bit0 -V0016_bit0 V0017_bit0 -V0018_bit0 V0019_bit0 V0020_bit0 V0021_bit0 V0022_bit0 -V0023_bit0 V0024_bit0 -V0025_bit0 V0026_bit0 -V0027_bit0 V0028_bit0 V0029_bit0 V0030_bit0 -V0031_bit0 -V0032_bit0 V0033_bit0 -V0034_bit0 V0035_bit0 V0036_bit0 -V0037_bit0 V0038_bit0 -V0039_bit0 V0040_bit0 -V0041_bit0 V0042_bit0 V0043_bit0 V0044_bit0 -V0045_bit0
c _______________________________________________________________________________
c 
c restarts              : 34
c conflicts             : 319012         (4053 /sec)
c decisions             : 357671         (4545 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 78.703 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/18166/stat): 18166 (minisat+_script) R 18165 18166 28974 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1851954774 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18166/statm): 174 3 169 147 0 27 0
[pid=18166] 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=18167
New process pid=18168
New process pid=18169
execve syscall for /bin/sed executable
One traced child (pid=18168) 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=18169) exited with status: 0
One traced child (pid=18167) exited with status: 0
New process pid=18170
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-stein45.opb

[startup+10.0038 s]
Raw data (loadavg): 0.94 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 254 0 0 0 993 1 0 0 25 0 1 0 1851954779 1327104 241 4294967295 134512640 135094434 3221224432 3221223056 134557648 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 324 241 145 145 0 179 0
[pid=18170] vsize: 1296
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 3420

[startup+20.0046 s]
Raw data (loadavg): 0.95 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 282 0 0 0 1992 1 0 0 25 0 1 0 1851954779 1437696 269 4294967295 134512640 135094434 3221224432 3221223104 134556100 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 351 269 145 145 0 206 0
[pid=18170] vsize: 1404
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 3528

[startup+30.0064 s]
Raw data (loadavg): 0.95 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 299 0 0 0 2992 1 0 0 25 0 1 0 1851954779 1507328 286 4294967295 134512640 135094434 3221224432 3221223088 134557920 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 368 286 145 145 0 223 0
[pid=18170] vsize: 1472
Current children cumulated CPU time (s) 29.94
Current children cumulated vsize (Kb) 3596

[startup+40.0072 s]
Raw data (loadavg): 0.96 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 325 0 0 0 3991 1 0 0 25 0 1 0 1851954779 1613824 312 4294967295 134512640 135094434 3221224432 3221223024 134557178 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 394 312 145 145 0 249 0
[pid=18170] vsize: 1576
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 3700

[startup+50.008 s]
Raw data (loadavg): 0.97 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 333 0 0 0 4992 1 0 0 25 0 1 0 1851954779 1646592 320 4294967295 134512640 135094434 3221224432 3221223088 134558221 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 402 320 145 145 0 257 0
[pid=18170] vsize: 1608
Current children cumulated CPU time (s) 49.94
Current children cumulated vsize (Kb) 3732

[startup+60.0088 s]
Raw data (loadavg): 0.97 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 340 0 0 0 5992 1 0 0 25 0 1 0 1851954779 1675264 327 4294967295 134512640 135094434 3221224432 3221223088 134557852 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 409 327 145 145 0 264 0
[pid=18170] vsize: 1636
Current children cumulated CPU time (s) 59.94
Current children cumulated vsize (Kb) 3760

[startup+70.0096 s]
Raw data (loadavg): 0.98 0.96 0.91 2/57 18170
Raw data (/proc/18166/stat): 18166 (minisat+_script) S 18165 18166 28974 0 -1 0 289 239 0 0 0 0 0 1 21 0 1 0 1851954774 2174976 226 4294967295 134512640 135087896 3221224496 3221223768 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/18166/statm): 531 226 485 147 0 384 0
[pid=18166] vsize: 2124
Raw data (/proc/18170/stat): 18170 (minisat+_64-bit) R 18166 18166 28974 0 -1 0 349 0 0 0 6991 2 0 0 25 0 1 0 1851954779 1712128 336 4294967295 134512640 135094434 3221224432 3221223024 134557157 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/18170/statm): 418 336 145 145 0 273 0
[pid=18170] vsize: 1672
Current children cumulated CPU time (s) 69.94
Current children cumulated vsize (Kb) 3796
One traced child (pid=18170) exited with status: 30
One traced child (pid=18166) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 78.8011
CPU time (s): 78.753
CPU user time (s): 78.708
CPU system time (s): 0.044993
CPU usage (%): 99.939
Max. virtual memory (cumulated for all children) (Kb): 3796

Verifier Data

Verifier:	OK	30