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guard on m_preprocess in inc_sat_solver

This commit is contained in:
Christoph M. Wintersteiger 2016-03-11 12:02:49 +00:00
parent 62a54cf154
commit 9dd53c091a

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@ -214,7 +214,7 @@ public:
m_optimize_model = m_params.get_bool("optimize_model", false);
}
virtual void collect_statistics(statistics & st) const {
m_preprocess->collect_statistics(st);
if (m_preprocess) m_preprocess->collect_statistics(st);
m_solver.collect_statistics(st);
}
virtual void get_unsat_core(ptr_vector<expr> & r) {