z3 / src / sat / sat_asymm_branch.h

Copyright (c) 2011 Microsoft Corporation

Module Name:



    SAT solver asymmetric branching


    Leonardo de Moura (leonardo) 2011-05-30.

Revision History:



namespace sat {
    class solver;

    class asymm_branch {
        struct report;
        solver & s;
        int      m_counter;

        // config
        bool                   m_asymm_branch;
        unsigned               m_asymm_branch_rounds;
        unsigned               m_asymm_branch_limit;

        // stats
        unsigned m_elim_literals;

        bool process(clause & c);
        asymm_branch(solver & s, params_ref const & p);

        void operator()(bool force = false);

        void updt_params(params_ref const & p);
        static void collect_param_descrs(param_descrs & d);

        void collect_statistics(statistics & st);
        void reset_statistics();

        void dec(unsigned c) { m_counter -= c; }


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