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delta faction to control double lookahead eagerness

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2018-12-04 23:41:03 -08:00
parent 44b2c3ce6b
commit dc77579707
6 changed files with 26 additions and 16 deletions
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1
src/sat/sat_params.pyg
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@ -74,6 +74,7 @@ def_module_params('sat',
('lookahead.use_learned', BOOL, False, 'use learned clauses when selecting lookahead literal'),
('lookahead_simplify.bca', BOOL, True, 'add learned binary clauses as part of lookahead simplification'),
('lookahead.global_autarky', BOOL, False, 'prefer to branch on variables that occur in clauses that are reduced'),
('lookahead.delta_fraction', DOUBLE, 1.0, 'number between 0 and 1, the smaller the more literals are selected for double lookahead'),
('lookahead.reward', SYMBOL, 'march_cu', 'select lookahead heuristic: ternary, heule_schur (Heule Schur), heuleu (Heule Unit), unit, or march_cu'))
# reward function used to determine which literal to cube on.
# - ternary: reward function useful for random 3-SAT instances. Used by Heule and Knuth in March.