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early givup #3604

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-03-31 13:46:02 -07:00
parent 98b43322b1
commit c108b7f99c
1 changed files with 8 additions and 4 deletions
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12
src/solver/parallel_tactic.cpp
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@ -183,6 +183,7 @@ class parallel_tactic : public tactic {
ref<solver> m_solver; // solver state
unsigned m_depth; // number of nested calls to cubing
double m_width; // estimate of fraction of problem handled by state
bool m_giveup;
public:
solver_state(ast_manager* m, solver* s, params_ref const& p):
@ -192,7 +193,8 @@ class parallel_tactic : public tactic {
m_params(p),
m_solver(s),
m_depth(0),
m_width(1.0)
m_width(1.0),
m_giveup(false)
{
}
@ -264,7 +266,9 @@ class parallel_tactic : public tactic {
bool giveup() {
std::string r = get_solver().reason_unknown();
return r == "(incomplete quantifiers)";
std::string inc("(incomplete");
m_giveup |= r.compare(0, inc.size(), inc) == 0;
return m_giveup;
}
void assert_cube(expr_ref_vector const& cube) {
@ -309,7 +313,7 @@ class parallel_tactic : public tactic {
}
bool canceled() {
return m().canceled();
return m_giveup || m().canceled();
}
std::ostream& display(std::ostream& out) {
@ -469,7 +473,7 @@ private:
case l_false: report_unsat(s); return;
}
if (canceled(s)) return;
if (s.giveup()) return;
if (s.giveup()) { report_undef(s); return; }
if (memory_pressure()) {
goto simplify_again;