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f83705bf9f
* Add interval class * Take dependency as const reference * Compute forbidden intervals for ule-constraints * Add class for evaluated interval * We need the evaluated bounds as well * Don't add constraint to cjust multiple times (hack, to be improved later) * typo * More interval helpers * Add constraint::ult factory function * Fix forbidden interval condition * Add solver::has_viable * Add conflict explanation using forbidden intervals (not yet fully integrated into solver)
29 lines
661 B
C++
29 lines
661 B
C++
/*++
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Copyright (c) 2021 Microsoft Corporation
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Module Name:
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Conflict explanation using forbidden intervals as described in
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"Solving bitvectors with MCSAT: explanations from bits and pieces"
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by S. Graham-Lengrand, D. Jovanovic, B. Dutertre.
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Author:
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Nikolaj Bjorner (nbjorner) 2021-03-19
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Jakob Rath 2021-04-6
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--*/
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#pragma once
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#include "math/polysat/constraint.h"
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#include "math/polysat/interval.h"
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#include "math/polysat/solver.h"
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namespace polysat {
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class forbidden_intervals {
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public:
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static bool explain(solver& s, ptr_vector<constraint> const& conflict, pvar v, scoped_ptr_vector<constraint>& out_lemma);
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};
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}
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