Age | Commit message (Collapse) | Author |
|
|
|
|
|
|
|
|
|
|
|
|
|
This PR does some more cleanup of the includes.
|
|
|
|
When adding libpoly, we forgot to add a proper define to cvc4autoconfig and included real_algebraic_number.h everywhere to get this define. This PR introduces the CVC4_POLY_IMP define and removes all obsolete includes to real_algebraic_number.h.
|
|
CAD theory (used in nl-cad) requires that polynomials are properly factorized (a finest square-free basis). This PR replaces usage of raw std::vector by a new wrapper PolyVector that ensures proper factorization whenever a polynomial is added. This fixes one piece of code that omitted factorization, leading to soundness issues as in #5726.
Fixes #5726.
|
|
This PR updates the update-copyright.pl script to also update/add copyright headers to CMake specific files. It further fixes a small typo in the header.
|
|
This PR fixes a subtle issue when making the polynomials of two subsequent (overlapping) intervals relative square-free. We now make sure that the resulting polynomials are ignored (if constant) or pushed to the lower dimension (if lower main variable). Also, we now appropriately update the main polynomials of the corresponding intervals.
|
|
This PR adds some utilities and, most importantly, the interface of the new
CAD-based solver.
The approach is based on https://arxiv.org/pdf/2003.05633.pdf and the code
structure follows the paper rather closely.
|
|
Based on #4679, this PR contains further preparations for a CAD-based arithmetic solver that extends the current NonlinearExtension.
In detail, it provides:
a Constraints class that manages all (polynomial) constraints visible to the cad solver,
a collection of methods used for cad projections,
a VariableOrdering class that provides different variable ordering heuristics tailored to cad,
an extension to the NlModel class, allowing for witness terms,
further conversion methods, in particular between Node and poly::Polynomial, poly::Value and RealAlgebraicNumber.
|