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-v2-20-10/MIPLIB/miplib3/normalized-mps-v2-20-10-gt2.opb
MD5SUMf1382105ee9fb79777762a53cf6a73c1
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 21166
Optimality of the best value was proved NO
Number of terms in the objective function 304
Biggest coefficient in the objective function 62376
Number of bits for the biggest coefficient in the objective function 16
Sum of the numbers in the objective function 3092598
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 62376
Number of bits of the biggest number in a constraint 16
Biggest sum of numbers in a constraint 3092598
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1177.34
Number of variables556
Total number of constraints217
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)26
Number of constraints which are nor clauses,nor cardinality constraints191
Minimum length of a constraint1
Maximum length of a constraint48

Trace number 26420 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc27 THE 2005-05-24 15:39:02 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13444 boxname=wulflinc27 idbench=1035 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  f1382105ee9fb79777762a53cf6a73c1  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-gt2.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-gt2.opb
IDLAUNCH: 13444
/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:        909084 kB
Buffers:         34032 kB
Cached:          69992 kB
SwapCached:        628 kB
Active:          63112 kB
Inactive:        43324 kB
HighTotal:      131008 kB
HighFree:        57680 kB
LowTotal:       903652 kB
LowFree:        851404 kB
SwapTotal:     2097892 kB
SwapFree:      2096768 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5648 kB
Slab:            13492 kB
Committed_AS:    63584 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 15:44:27 (client local time) WITH STATUS 0 IN 324.784 SECONDS
stats: 13444 7 324.784 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 556 variables and 180 constraints.
c After prepocess the problem consists of 556 variables and 193 constraints.
c preprocess terminated 0.77 s
c Initial Lower Bound: 17011
c Lower Bound Elapsed time: 0.0988
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 267669 @ 21.815
c NEW SOLUTION FOUND: 262111 @ 24.236
c NEW SOLUTION FOUND: 261469 @ 24.374

    c  Warning: NO Unit Constraints after backtrack??
	Continuing Execution....


c NEW SOLUTION FOUND: 260717 @ 44.424
c NEW SOLUTION FOUND: 257617 @ 46.018

    c  Warning: NO Unit Constraints after backtrack??
	Continuing Execution....


c NEW SOLUTION FOUND: 255169 @ 105.462
c NEW SOLUTION FOUND: 254507 @ 105.491
#### 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): 0.86 0.95 0.98 2/54 4610
Raw data (stat): 4610 (runsolver) R 4609 3394 3393 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 831377620 1052672 99 4294967295 134512640 135381576 3221224496 3221219708 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+9.99987 s]
Raw data (loadavg): 0.88 0.95 0.98 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 3176 0 0 0 987 10 0 0 25 0 1 0 831377620 11980800 2239 4294967295 134512640 134714508 3221224592 3221220736 1074971892 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2925 2239 1111 63 0 2862 0
vsize: 11700
[startup+20.0007 s]
Raw data (loadavg): 1.05 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 3178 0 0 0 1987 10 0 0 25 0 1 0 831377620 11980800 2241 4294967295 134512640 134714508 3221224592 3221222988 1077781665 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2925 2241 1111 63 0 2862 0
vsize: 11700
[startup+30.002 s]
Raw data (loadavg): 1.04 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 11767 0 0 0 2957 40 0 0 25 0 1 0 831377620 13946880 2726 4294967295 134512640 134714508 3221224592 3221223108 134542620 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3405 2726 1111 63 0 3342 0
vsize: 13620
[startup+40.0028 s]
Raw data (loadavg): 1.04 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 25606 0 0 0 3916 81 0 0 25 0 1 0 831377620 16007168 3168 4294967295 134512640 134714508 3221224592 3221221520 1075960263 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3908 3168 1111 63 0 3845 0
vsize: 15632
[startup+50.0036 s]
Raw data (loadavg): 1.03 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 38189 0 0 0 4876 121 0 0 25 0 1 0 831377620 17174528 3514 4294967295 134512640 134714508 3221224592 3221221696 1074138740 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 4193 3514 1111 63 0 4130 0
vsize: 16772
[startup+60.0027 s]
Raw data (loadavg): 1.03 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 50836 0 0 0 5838 158 0 0 25 0 1 0 831377620 19091456 3956 4294967295 134512640 134714508 3221224592 3221222320 1075829025 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 4661 3956 1111 63 0 4598 0
vsize: 18644
[startup+70.0039 s]
Raw data (loadavg): 1.02 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 66415 0 0 0 6799 198 0 0 25 0 1 0 831377620 19972096 4197 4294967295 134512640 134714508 3221224592 3221222944 1074153749 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 4876 4197 1111 63 0 4813 0
vsize: 19504
[startup+80.0043 s]
Raw data (loadavg): 1.02 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 80459 0 0 0 7764 233 0 0 25 0 1 0 831377620 22855680 4749 4294967295 134512640 134714508 3221224592 3221220832 1075115712 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 5580 4749 1111 63 0 5517 0
vsize: 22320
[startup+90.0051 s]
Raw data (loadavg): 1.01 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 97702 0 0 0 8720 277 0 0 25 0 1 0 831377620 22609920 4847 4294967295 134512640 134714508 3221224592 3221223152 1073989436 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 5520 4847 1111 63 0 5457 0
vsize: 22080
[startup+100.005 s]
Raw data (loadavg): 1.01 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 112129 0 0 0 9684 313 0 0 25 0 1 0 831377620 23662592 5103 4294967295 134512640 134714508 3221224592 3221222848 1073990361 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 5777 5103 1111 63 0 5714 0
vsize: 23108
[startup+110.005 s]
Raw data (loadavg): 1.01 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 128736 0 0 0 10640 357 0 0 25 0 1 0 831377620 25612288 5580 4294967295 134512640 134714508 3221224592 3221222704 1074867308 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 6253 5580 1111 63 0 6190 0
vsize: 25012
[startup+120.006 s]
Raw data (loadavg): 1.01 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 146649 0 0 0 11597 400 0 0 25 0 1 0 831377620 27828224 6003 4294967295 134512640 134714508 3221224592 3221221664 1074867311 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 6794 6003 1111 63 0 6731 0
vsize: 27176
[startup+130.005 s]
Raw data (loadavg): 1.01 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 164066 0 0 0 12554 443 0 0 25 0 1 0 831377620 28860416 6368 4294967295 134512640 134714508 3221224592 3221221872 1074140038 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 7079 6368 1111 63 0 7016 0
vsize: 28184
[startup+140.006 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 176573 0 0 0 13523 475 0 0 25 0 1 0 831377620 29782016 6471 4294967295 134512640 134714508 3221224592 3221221580 1077404742 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 7205 6469 1111 63 0 7142 0
vsize: 29084
[startup+150.006 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 190193 0 0 0 14487 511 0 0 25 0 1 0 831377620 29691904 6575 4294967295 134512640 134714508 3221224592 3221223072 1074031964 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 7249 6575 1111 63 0 7186 0
vsize: 28996
[startup+160.011 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 214155 0 0 0 15431 567 0 0 25 0 1 0 831377620 31817728 7094 4294967295 134512640 134714508 3221224592 3221222988 1077781665 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 7768 7094 1111 63 0 7705 0
vsize: 31072
[startup+170.012 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 230391 0 0 0 16394 604 0 0 25 0 1 0 831377620 33357824 7470 4294967295 134512640 134714508 3221224592 3221222704 1074867305 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 8144 7470 1111 63 0 8081 0
vsize: 32576
[startup+180.011 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 244913 0 0 0 17358 641 0 0 25 0 1 0 831377620 35799040 7909 4294967295 134512640 134714508 3221224592 3221221560 1077410279 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 8740 7909 1111 63 0 8677 0
vsize: 34960
[startup+190.012 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 258044 0 0 0 18328 671 0 0 25 0 1 0 831377620 37027840 8290 4294967295 134512640 134714508 3221224592 3221220816 1075895809 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9040 8290 1111 63 0 8977 0
vsize: 36160
[startup+200.019 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 269868 0 0 0 19300 700 0 0 25 0 1 0 831377620 35831808 8063 4294967295 134512640 134714508 3221224592 3221222592 1074918597 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 8748 8063 1111 63 0 8685 0
vsize: 34992
[startup+210.03 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 289954 0 0 0 20253 748 0 0 25 0 1 0 831377620 36876288 8329 4294967295 134512640 134714508 3221224592 3221222416 1075823328 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9003 8329 1111 63 0 8940 0
vsize: 36012
[startup+220.03 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 306704 0 0 0 21211 790 0 0 25 0 1 0 831377620 40275968 8897 4294967295 134512640 134714508 3221224592 3221221664 1074867308 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9833 8897 1111 63 0 9770 0
vsize: 39332
[startup+230.033 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 314618 0 0 0 22192 810 0 0 25 0 1 0 831377620 39796736 8878 4294967295 134512640 134714508 3221224592 3221220752 1075095166 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9716 8889 1111 63 0 9653 0
vsize: 38864
[startup+240.039 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 332111 0 0 0 23151 852 0 0 25 0 1 0 831377620 40550400 9080 4294967295 134512640 134714508 3221224592 3221220752 1075095124 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9900 9080 1111 63 0 9837 0
vsize: 39600
[startup+250.038 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 340292 0 0 0 24133 869 0 0 25 0 1 0 831377620 41738240 9479 4294967295 134512640 134714508 3221224592 3221220476 1074788953 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10190 9479 1111 63 0 10127 0
vsize: 40760
[startup+260.038 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 352170 0 0 0 25105 897 0 0 25 0 1 0 831377620 42487808 9497 4294967295 134512640 134714508 3221224592 3221220736 1074969455 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10373 9497 1111 63 0 10310 0
vsize: 41492
[startup+270.038 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 360981 0 0 0 26083 920 0 0 25 0 1 0 831377620 40390656 9187 4294967295 134512640 134714508 3221224592 3221222944 1074153675 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9861 9187 1111 63 0 9798 0
vsize: 39444
[startup+280.047 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 374214 0 0 0 27053 951 0 0 25 0 1 0 831377620 42754048 9712 4294967295 134512640 134714508 3221224592 3221220820 1075115028 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10438 9712 1111 63 0 10375 0
vsize: 41752
[startup+290.05 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 385011 0 0 0 28026 978 0 0 25 0 1 0 831377620 43479040 9805 4294967295 134512640 134714508 3221224592 3221220524 1074788128 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10615 9805 1111 63 0 10552 0
vsize: 42460
[startup+300.05 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 396779 0 0 0 28996 1008 0 0 25 0 1 0 831377620 41586688 9479 4294967295 134512640 134714508 3221224592 3221222988 1077781665 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10153 9479 1111 63 0 10090 0
vsize: 40612
[startup+310.065 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 410000 0 0 0 29967 1039 0 0 25 0 1 0 831377620 44150784 10009 4294967295 134512640 134714508 3221224592 3221220476 1074788964 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10779 10009 1111 63 0 10716 0
vsize: 43116
[startup+320.066 s]
Raw data (loadavg): 1.00 0.99 0.99 2/54 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 420968 0 0 0 30941 1065 0 0 25 0 1 0 831377620 43384832 9887 4294967295 134512640 134714508 3221224592 3221222592 1074915844 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10592 9887 1111 63 0 10529 0
vsize: 42368
[startup+324.774 s]
Raw data (loadavg): 1.00 0.99 0.99 1/53 4610
Raw data (stat): 4610 (bsolo_lpr_cuts) R 4609 3394 3393 0 -1 0 420968 0 0 0 30941 1065 0 0 25 0 1 0 831377620 43384832 9887 4294967295 134512640 134714508 3221224592 3221222592 1074915844 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10592 9887 1111 63 0 10529 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 324.774
CPU time (s): 324.784
CPU user time (s): 313.982
CPU system time (s): 10.8014
CPU usage (%): 100.003
Max. virtual memory (Kb): 43116
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####