Submitter Variables Constraints Density Status Group Objective MPS File
Gleb Belov 50862 92737 4.93861e-05 easy oocsp-racks 0 oocsp-racks030e6cci.mps.gz

These are the instances from MiniZinc Challenges 2012-2016 (see www.minizinc.org), compiled for MIP WITH INDICATOR CONSTRAINTS using the develop branch of MiniZinc and CPLEX 12.7.1 on 30 April 2017. Thus, these instances can only be handled by solvers accepting indicator constraints. For instances compiled with big-M/domain decomposition only, see my previous submission to MIPLIB.To recompile, create a directory MODELS, a list lst12_16.txt of the instances with full paths to mzn/dzn files of each instance per line, and say$> ~/install/libmzn/tests/benchmarking/mzn-test.py -l ../lst12_16.txt –slvPrf MZN-CPLEX –debug 1 –addOption “–timeout 3 -D fIndConstr=true -D fMIPdomains=false” –useJoinedName “–writeModel MODELS_IND/%s.mps” Alternatively, you can compile individual instance as follows: $> mzn-cplex -v -s -G linear –output-time ../challenge_2012_2016/mznc2016_probs/zephyrus/zephyrus.mzn ../challenge_2012_2016/mznc2016_p/zephyrus/14__8__6__3.dzn -a –timeout 3 -D fIndConstr=true -D fMIPdomains=false –writeModel MODELS_IND/challenge_2012_2016mznc2016_probszephyruszephyrusmzn-challenge_2012_2016mznc2016_probszephyrus14__8__6__3dzn.mps

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 50862 48932
Constraints 92737 91071
Binaries 32783 31485
Integers 18079 17447
Continuous 0 0
Implicit Integers 11460 11091
Fixed Variables 1381 0
Nonzero Density 4.93861e-05 5.15227e-05
Nonzeroes 232944 229600
Constraint Classification Properties
Original Presolved
Total 81278 80131
Empty 0 0
Free 0 0
Singleton 0 240
Aggregations 5824 5824
Precedence 27766 27046
Variable Bound 17376 16714
Set Partitioning 150 150
Set Packing 0 0
Set Covering 0 4470
Cardinality 1740 1740
Invariant Knapsack 23775 19305
Equation Knapsack 0 0
Bin Packing 0 0
Knapsack 0 0
Integer Knapsack 7 6
Mixed Binary 0 0
General Linear 4640 4636
Indicator 11460 11460

Structure

Available nonzero structure and decomposition information. Further information can be found here.

value min median mean max
Components
Constraint %
Variable %
Score

Best Known Solution(s)

No solution available for oocsp-racks030e6cci .

Similar instances in collection

The following instances are most similar to oocsp-racks030e6cci in the collection. This similarity analysis is based on 100 scaled instance features describing properties of the variables, objective function, bounds, constraints, and right hand sides.

Instance Variables Binaries Integers Continuous Constraints Nonz. Submitter Group Status Objective
oocsp-racks030f7cci 50859 32779 18080 0 92792 233170 Gleb Belov oocsp-racks easy Infeasible
rpp22falsei 25462 10276 15056 130 33269 56547 Gleb Belov rpp easy 0
gfd-schedulen180f7d50m30k18 227535 192408 2025 33102 457985 1233370 Gleb Belov gfd-schedule hard 1
mspsphard03i 32266 18603 13663 0 56333 114618 Gleb Belov mspsp easy 30
gfd-schedulen25f5d20m10k3i 30916 14783 14556 1577 47093 88245 Gleb Belov gfd-schedule easy 5

Reference

@article{MZChPhil2010,
year={2010},
journal={Constraints},
volume={15},
number={3},
title={Philosophy of the {MiniZinc} challenge},
publisher={Springer US},
author={Stuckey, P. J. and Becket, R. and Fischer, J.},
pages={307--316},
}
@incollection{BelovEtAl_Lin16,
author="Belov, G.
and Stuckey, P. J.
and Tack, G.
and Wallace, M.",
editor="Rueher, M.",
title="Improved Linearization of Constraint Programming Models",
bookTitle="Principles and Practice of Constraint Programming: 22nd International Conference, CP 2016, Proceedings",
year="2016",
publisher="Springer International Publishing",
pages="49--65",
}

Last Update Nov 09, 2018 by Gregor Hendel
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