Structuring an MINLP solver

[matheusdiogenesandrade]

Hello guys!

I am working on a project in which I have to code some algorithms for smooth MINLPs, such as the Extended Cutting Plane, Extended Supporting Hyperplane, and Outer Approximation. I am planning to use the Cbc, with its MILP solver for solving the master problem, along with its callback functionality for adding cuts from the slave problems.

Therefore, I am trying to list all functions from Cbc I have to use throughout the implementation. Below I listed such options in a table. So far I have listed some requirements the MILP solver must have; 1st column;, and the corresponding functions; 2nd and 3rd columns;.

I placed the "?" character in the cells I do not know the proper information. I am looking for the remaining information necessary to fill this table. I would like to know if someone has worked with MINLP with Cbc before, and if has some answers for filling this table.

Requirements	CBC-COIN-OR
	Functions	References
Get inequalities	getNumRows()	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#40e058a76208364a573dc109586bd208
Get inequality sense	getRowSense()	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#9cf311df9ca4dd9165a925a780f73d59
Get inequality LHS	?	?
Get inequality RHS	getRightHandSide()	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#10f1678372ac83e3c84ec0173382c49a
Get non-linear inequalities	?	?
Get convex inequalities	?	?
Get variables	getNumCols()	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#5d010c66439040cc41f325e403ac455d
Get integer variables	numberIntegers() integerType(int I) isContinuous(int colIndex) isBinary(int colIndex) isInteger(int colIndex) IsIntegerNonBinary(int colIndex)	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#46b35008e5dde744de7861a456597888
Get non-integer variables	numberIntegers() integerType(int I) isContinuous(int colIndex) isBinary(int colIndex) isInteger(int colIndex) IsIntegerNonBinary(int colIndex)	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#46b35008e5dde744de7861a456597888
Get variables UB	getColUpper() GetCbcColUpper ()	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#e029873f5a7b4aef3df4ad30be929e1f
Get variables LB	GetColLower () GetCbcColLower ()	https://www.coin-or.org/Doxygen/CoinAll/class_cbc_model.html#cfa9192b32bde2d710e85deb71bce52b
Read LP file	readLp	https://www.coin-or.org/Doxygen/CoinAll/class_osi_clp_solver_interface.html#d13f9e98ebaec68ce028d5aec95e6c38
Read MPS file	readMps	https://www.coin-or.org/Doxygen/CoinAll/class_osi_clp_solver_interface.html#edd68d7b3e54507a1afa0df0712f76d1

Thank you for the attention, and best regards.