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).
  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

Namenormalized-opb/mps-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-lseu.opb
MD5SUM5fcfa2f72175b9723ffb2781fb76fcdc
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1120
Optimality of the best value was proved NO
Number of terms in the objective function 85
Biggest coefficient in the objective function 517
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 15494
Number of bits of the sum of numbers in the objective function 14
Biggest number in a constraint 1656
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 15494
Number of bits of the biggest sum of numbers14
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02584
Number of variables89
Total number of constraints117
Number of constraints which are clauses2
Number of constraints which are cardinality constraints (but not clauses)104
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint1
Maximum length of a constraint47

Trace number 27440 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-05-24 22:03:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=16915 boxname=wulflinc12 idbench=1302 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  5fcfa2f72175b9723ffb2781fb76fcdc  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-lseu.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-lseu.opb
IDLAUNCH: 16915
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        681160 kB
Buffers:         37040 kB
Cached:         296000 kB
SwapCached:        568 kB
Active:          69440 kB
Inactive:       266036 kB
HighTotal:      131008 kB
HighFree:         1596 kB
LowTotal:       903652 kB
LowFree:        679564 kB
SwapTotal:     2097136 kB
SwapFree:      2096076 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5680 kB
Slab:            12444 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-24 22:05:55 (client local time) WITH STATUS 0 IN 146.206 SECONDS
stats: 16915 7 146.206 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 89 variables and 28 constraints.
c After prepocess the problem consists of 89 variables and 28 constraints.
c preprocess terminated 0.072 s
c Initial Lower Bound: 777
c Lower Bound Elapsed time: 0.0102
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 3184 @ 1.35
c NEW SOLUTION FOUND: 3074 @ 1.364
c NEW SOLUTION FOUND: 2879 @ 1.397
c NEW SOLUTION FOUND: 2798 @ 1.461
c NEW SOLUTION FOUND: 2783 @ 1.486
c NEW SOLUTION FOUND: 2681 @ 1.534
c NEW SOLUTION FOUND: 2471 @ 1.547
c NEW SOLUTION FOUND: 2451 @ 2.714
c NEW SOLUTION FOUND: 2393 @ 25.937
c NEW SOLUTION FOUND: 2377 @ 27.784
c NEW SOLUTION FOUND: 2307 @ 39.936
c NEW SOLUTION FOUND: 2283 @ 39.951
c NEW SOLUTION FOUND: 2213 @ 51.155
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Raw data (loadavg): 0.79 0.95 0.90 2/54 4891
Raw data (stat): 4891 (runsolver) R 4890 32284 32283 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 775462015 1052672 99 4294967295 134512640 135381576 3221224496 3221219708 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0005 s]
Raw data (loadavg): 0.82 0.95 0.90 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 9569 0 0 0 958 39 0 0 25 0 1 0 775462015 11702272 2169 4294967295 134512640 134714508 3221224592 3221222796 1077781665 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2854 2169 1111 63 0 2791 0
vsize: 11428
[startup+20.0016 s]
Raw data (loadavg): 0.85 0.95 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 28354 0 0 0 1902 96 0 0 25 0 1 0 775462015 16523264 3284 4294967295 134512640 134714508 3221224592 3221220664 1074950215 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3960 3279 1111 63 0 3897 0
vsize: 16136
[startup+30.0015 s]
Raw data (loadavg): 0.87 0.95 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 52880 0 0 0 2843 154 0 0 25 0 1 0 775462015 18251776 3775 4294967295 134512640 134714508 3221224592 3221223036 1077781665 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 4456 3775 1111 63 0 4393 0
vsize: 17824
[startup+40.0021 s]
Raw data (loadavg): 0.89 0.95 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 70068 0 0 0 3800 197 0 0 25 0 1 0 775462015 19615744 4115 4294967295 134512640 134714508 3221224592 3221222704 1074867334 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 4789 4115 1111 63 0 4726 0
vsize: 19156
[startup+50.0032 s]
Raw data (loadavg): 0.91 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 101879 0 0 0 4724 272 0 0 25 0 1 0 775462015 21508096 4574 4294967295 134512640 134714508 3221224592 3221223232 134649075 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 5251 4574 1111 63 0 5188 0
vsize: 21004
[startup+60.004 s]
Raw data (loadavg): 0.92 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 114156 0 0 0 5697 300 0 0 25 0 1 0 775462015 24797184 5185 4294967295 134512640 134714508 3221224592 3221220720 1075112080 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 6054 5185 1111 63 0 5991 0
vsize: 24216
[startup+70.0045 s]
Raw data (loadavg): 0.93 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 129277 0 0 0 6662 336 0 0 25 0 1 0 775462015 23158784 4979 4294967295 134512640 134714508 3221224592 3221222592 1074918162 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 5654 4979 1111 63 0 5591 0
vsize: 22616
[startup+80.0048 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 144636 0 0 0 7627 370 0 0 25 0 1 0 775462015 24879104 5107 4294967295 134512640 134714508 3221224592 3221220752 1075095166 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 6074 5108 1111 63 0 6011 0
vsize: 24296
[startup+90.0055 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 184270 0 0 0 8535 463 0 0 25 0 1 0 775462015 27901952 5842 4294967295 134512640 134714508 3221224592 3221221580 1077404742 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 6541 5836 1111 63 0 6478 0
vsize: 27248
[startup+100.005 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 225576 0 0 0 9435 563 0 0 25 0 1 0 775462015 30429184 6699 4294967295 134512640 134714508 3221224592 3221223516 1077781665 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 7429 6699 1111 63 0 7366 0
vsize: 29716
[startup+110.006 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 4891
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 262992 0 0 0 10352 646 0 0 25 0 1 0 775462015 34635776 7668 4294967295 134512640 134714508 3221224592 3221222592 1074918594 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 8456 7668 1111 63 0 8393 0
vsize: 33824
[startup+120.007 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 4893
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 290031 0 0 0 11292 706 0 0 25 0 1 0 775462015 37416960 8068 4294967295 134512640 134714508 3221224592 3221221580 1077404742 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 9135 8068 1111 63 0 9072 0
vsize: 36540
[startup+130.007 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 4893
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 308328 0 0 0 12248 750 0 0 25 0 1 0 775462015 38559744 8422 4294967295 134512640 134714508 3221224592 3221220736 1074971258 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 9414 8422 1111 63 0 9351 0
vsize: 37656
[startup+140.007 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 4893
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 316351 0 0 0 13230 769 0 0 25 0 1 0 775462015 40783872 9122 4294967295 134512640 134714508 3221224592 3221220636 1074873539 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 9957 9122 1111 63 0 9894 0
vsize: 39828
[startup+146.219 s]
Raw data (loadavg): 0.98 0.97 0.91 1/53 4893
Raw data (stat): 4891 (bsolo_lpr_cuts) R 4890 32284 32283 0 -1 0 316351 0 0 0 13230 769 0 0 25 0 1 0 775462015 40783872 9122 4294967295 134512640 134714508 3221224592 3221220636 1074873539 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 9957 9122 1111 63 0 9894 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 146.219
CPU time (s): 146.206
CPU user time (s): 138.325
CPU system time (s): 7.8808
CPU usage (%): 99.9911
Max. virtual memory (Kb): 39828
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####