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fix uninitialized variable m_gc_burst in config, have cuber accept and receive optional vector of variables indicating splits and global autarky as output

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2017-12-14 02:38:45 -08:00
parent 178211d091
commit 6b258578f9
15 changed files with 121 additions and 100 deletions
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11
src/api/z3_api.h
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@ -6230,13 +6230,20 @@ extern "C" {
The number of (non-constant) cubes is by default 1. For the sat solver cubing is controlled
using parameters sat.lookahead.cube.cutoff and sat.lookahead.cube.fraction.
The third argument is a vector of variables that may be used for cubing.
The contents of the vector is only used in the first call. The initial list of variables
is used in subsequent calls until it returns the unsatisfiable cube.
The vector is modified to contain a set of Autarky variables that occor in clauses that
are affected by the (last literal in the) cube. These variables could be used by a different
cuber (on a different solver object) for further recursive cubing.
The last argument is a backtracking level. It instructs the cube process to backtrack below
the indicated level for the next cube.
def_API('Z3_solver_cube', AST_VECTOR, (_in(CONTEXT), _in(SOLVER), _in(UINT)))
def_API('Z3_solver_cube', AST_VECTOR, (_in(CONTEXT), _in(SOLVER), _in(AST_VECTOR), _in(UINT)))
*/
Z3_ast_vector Z3_API Z3_solver_cube(Z3_context c, Z3_solver s, unsigned backtrack_level);
Z3_ast_vector Z3_API Z3_solver_cube(Z3_context c, Z3_solver s, Z3_ast_vector vars, unsigned backtrack_level);
/**
\brief Retrieve the model for the last #Z3_solver_check or #Z3_solver_check_assumptions