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theory_str binary search heuristic WIP

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This commit is contained in:
Murphy Berzish 2016-12-22 19:17:42 -05:00
parent df63b62763
commit 2dc9b486d3
5 changed files with 442 additions and 168 deletions
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2
src/smt/params/smt_params_helper.pyg
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@ -69,5 +69,7 @@ def_module_params(module_name='smt',
('str.fast_length_tester_cache', BOOL, False, 'cache length tester constants instead of regenerating them'),
('str.fast_value_tester_cache', BOOL, True, 'cache value tester constants instead of regenerating them'),
('str.string_constant_cache', BOOL, True, 'cache all generated string constants generated from anywhere in theory_str'),
('str.use_binary_search', BOOL, False, 'use a binary search heuristic for finding concrete length values for free variables in theory_str (set to False to use linear search)'),
('str.binary_search_start', UINT, 64, 'initial upper bound for theory_str binary search'),
('theory_case_split', BOOL, False, 'Allow the context to use heuristics involving theory case splits, which are a set of literals of which exactly one can be assigned True. If this option is false, the context will generate extra axioms to enforce this instead.')
))

2
src/smt/params/theory_str_params.cpp
View file

@ -27,4 +27,6 @@ void theory_str_params::updt_params(params_ref const & _p) {
m_UseFastLengthTesterCache = p.str_fast_length_tester_cache();
m_UseFastValueTesterCache = p.str_fast_value_tester_cache();
m_StringConstantCache = p.str_string_constant_cache();
m_UseBinarySearch = p.str_use_binary_search();
m_BinarySearchInitialUpperBound = p.str_binary_search_start();
}

7
src/smt/params/theory_str_params.h
View file

@ -68,6 +68,9 @@ struct theory_str_params {
*/
bool m_StringConstantCache;
bool m_UseBinarySearch;
unsigned m_BinarySearchInitialUpperBound;
theory_str_params(params_ref const & p = params_ref()):
m_AssertStrongerArrangements(true),
m_AggressiveLengthTesting(false),
@ -75,7 +78,9 @@ struct theory_str_params {
m_AggressiveUnrollTesting(true),
m_UseFastLengthTesterCache(false),
m_UseFastValueTesterCache(true),
m_StringConstantCache(true)
m_StringConstantCache(true),
m_UseBinarySearch(false),
m_BinarySearchInitialUpperBound(64)
{
updt_params(p);
}