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delta faction to control double lookahead eagerness

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
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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23
src/sat/sat_solver/inc_sat_solver.cpp
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@ -332,18 +332,6 @@ public:
}
sat::literal_vector lits;
lbool result = m_solver.cube(vars, lits, backtrack_level);
switch (result) {
case l_true:
return last_cube(true);
case l_false:
return last_cube(false);
default:
break;
}
if (lits.empty()) {
set_reason_unknown(m_solver.get_reason_unknown());
return expr_ref_vector(m);
}
expr_ref_vector fmls(m);
expr_ref_vector lit2expr(m);
lit2expr.resize(m_solver.num_vars() * 2);
@ -358,6 +346,17 @@ public:
vs.push_back(x);
}
}
switch (result) {
case l_true:
return last_cube(true);
case l_false:
return last_cube(false);
default:
break;
}
if (lits.empty()) {
set_reason_unknown(m_solver.get_reason_unknown());
}
return fmls;
}