Submitter Variables Constraints Density Status Group Objective MPS File
Gleb Belov 8436 13813 2.25108e-04 open vrp 330 stoch-vrpvrp-s5v2c8vrp-v2c8i.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 8436 7087
Constraints 13813 12314
Binaries 1485 1300
Integers 734 734
Continuous 6217 5053
Implicit Integers 180 280
Fixed Variables 34 0
Nonzero Density 0.000225108 0.000224901
Nonzeroes 26231 19627
Constraint Classification Properties
Original Presolved
Total 8493 7934
Empty 0 0
Free 0 0
Singleton 154 370
Aggregations 1213 1123
Precedence 310 1470
Variable Bound 360 1700
Set Partitioning 100 105
Set Packing 100 100
Set Covering 0 0
Cardinality 5 0
Invariant Knapsack 20 0
Equation Knapsack 0 0
Bin Packing 0 0
Knapsack 0 0
Integer Knapsack 0 0
Mixed Binary 5190 2140
General Linear 1041 926
Indicator 5320 5320

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)

Find solutions below. Download the archive containing all solutions from the Download page.

ID Objective Exact Int. Viol Cons. Viol Obj. Viol Submitter Date Description
1 330 0 0 0 - 2018-10-13 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to stoch-vrpvrp-s5v2c8vrp-v2c8i 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
amaze22012-06-28i 12691 4376 914 7401 17319 33831 Gleb Belov amaze easy 0
fillomino7x7-0i 12877 4821 4443 3613 17518 33300 Gleb Belov fillomino easy 0
elitserienhandball3i 32807 16966 6973 8868 35804 99434 Gleb Belov elitserienhandball open 6*
elitserienhandball13i 32791 16976 6976 8839 35758 99381 Gleb Belov elitserienhandball open 9*
elitserienhandball11i 32679 16944 6952 8783 35580 99071 Gleb Belov elitserienhandball open 4*

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 17, 2018 by Gregor Hendel
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