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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-10-15 14:29:39 -07:00
commit ce18421a7a
51 changed files with 1663 additions and 1117 deletions
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33
src/smt/theory_diff_logic_def.h
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@ -1078,43 +1078,32 @@ void theory_diff_logic<Ext>::get_implied_bound_antecedents(edge_id bridge_edge,
template<typename Ext>
unsigned theory_diff_logic<Ext>::node2simplex(unsigned v) {
//return v;
return m_objectives.size() + 2*v + 1;
}
template<typename Ext>
unsigned theory_diff_logic<Ext>::edge2simplex(unsigned e) {
//return m_graph.get_num_nodes() + e;
return m_objectives.size() + 2*e;
}
template<typename Ext>
unsigned theory_diff_logic<Ext>::obj2simplex(unsigned e) {
//return m_graph.get_num_nodes() + m_graph.get_num_edges() + e;
return e;
}
template<typename Ext>
unsigned theory_diff_logic<Ext>::num_simplex_vars() {
//return m_graph.get_num_nodes() + m_graph.get_num_edges() + m_objectives.size();
return m_objectives.size() + std::max(2*m_graph.get_num_edges(),2*m_graph.get_num_nodes()+1);
}
template<typename Ext>
bool theory_diff_logic<Ext>::is_simplex_edge(unsigned e) {
#if 0
return
m_graph.get_num_nodes() <= e &&
e < m_graph.get_num_nodes() + m_graph.get_num_edges();
#else
if (e < m_objectives.size()) return false;
e -= m_objectives.size();
return (0 == (e & 0x1));
#endif
}
template<typename Ext>
unsigned theory_diff_logic<Ext>::simplex2edge(unsigned e) {
SASSERT(is_simplex_edge(e));
//return e - m_graph.get_num_nodes();
return (e - m_objectives.size())/2;
}
@ -1184,7 +1173,21 @@ void theory_diff_logic<Ext>::update_simplex(Simplex& S) {
}
template<typename Ext>
inf_eps_rational<inf_rational> theory_diff_logic<Ext>::maximize(theory_var v, expr_ref& blocker) {
typename theory_diff_logic<Ext>::inf_eps theory_diff_logic<Ext>::value(theory_var v) {
objective_term const& objective = m_objectives[v];
inf_eps r = inf_eps(m_objective_consts[v]);
for (unsigned i = 0; i < objective.size(); ++i) {
numeral n = m_graph.get_assignment(v);
rational r1 = n.get_rational().to_rational();
rational r2 = n.get_infinitesimal().to_rational();
r += objective[i].second * inf_eps(rational(0), inf_rational(r1, r2));
}
return r;
}
template<typename Ext>
typename theory_diff_logic<Ext>::inf_eps
theory_diff_logic<Ext>::maximize(theory_var v, expr_ref& blocker) {
Simplex& S = m_S;
ast_manager& m = get_manager();
@ -1206,7 +1209,7 @@ inf_eps_rational<inf_rational> theory_diff_logic<Ext>::maximize(theory_var v, ex
lbool is_sat = S.make_feasible();
if (is_sat == l_undef) {
blocker = m.mk_false();
return inf_eps_rational<inf_rational>::infinity();
return inf_eps::infinity();
}
TRACE("opt", S.display(tout); );
SASSERT(is_sat != l_false);
@ -1233,12 +1236,12 @@ inf_eps_rational<inf_rational> theory_diff_logic<Ext>::maximize(theory_var v, ex
}
}
blocker = mk_gt(v, r);
return inf_eps_rational<inf_rational>(rational(0), r);
return inf_eps(rational(0), r);
}
default:
TRACE("opt", tout << "unbounded\n"; );
blocker = m.mk_false();
return inf_eps_rational<inf_rational>::infinity();
return inf_eps::infinity();
}
}