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fix for #291. The root issue is that the set of antecedents is recycled as a fixed object between routines. Antecedents that were already allocated for a Gomory cut got reset by the internalizer. This causes unsound bounds axioms to be created

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-11-05 15:08:42 -08:00
parent d6cb778365
commit fc592fc856
14 changed files with 206 additions and 148 deletions
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6
src/smt/smt_context.cpp
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@ -172,7 +172,9 @@ namespace smt {
}
void context::assign_core(literal l, b_justification j, bool decision) {
TRACE("assign_core", tout << "assigning: " << l << " "; display_literal(tout, l); tout << "\n";);
TRACE("assign_core", tout << (decision?"decision: ":"propagating: ") << l << " ";
display_literal(tout, l); tout << " level: " << m_scope_lvl << "\n";
display(tout, j););
SASSERT(l.var() < static_cast<int>(m_b_internalized_stack.size()));
m_assigned_literals.push_back(l);
m_assignment[l.index()] = l_true;
@ -1609,7 +1611,7 @@ namespace smt {
}
bool context::propagate() {
TRACE("propagate", tout << "propagating...\n";);
TRACE("propagate", tout << "propagating... " << m_qhead << ":" << m_assigned_literals.size() << "\n";);
while (true) {
if (inconsistent())
return false;