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have the classifier revert to full arithmetic on non-difference logic, reported on http://stackoverflow.com/questions/38594208/changing-order-of-z3-fixepoint-queries-changes-the-result/38596187#3

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-07-26 10:32:54 -07:00
parent 56c78753f0
commit 67c6f9be91
3 changed files with 34 additions and 32 deletions
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6
src/muz/pdr/pdr_context.cpp
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@ -895,7 +895,7 @@ namespace pdr {
SASSERT(m_prev);
SASSERT(children().empty());
if (this == m_next) {
SASSERT(root == this);
// SASSERT(root == this);
root = 0;
}
else {
@ -1818,6 +1818,10 @@ namespace pdr {
m_fparams.m_arith_mode = AS_UTVPI;
m_fparams.m_arith_expand_eqs = true;
}
else {
m_fparams.m_arith_mode = AS_ARITH;
m_fparams.m_arith_expand_eqs = false;
}
}
}
if (m_params.pdr_use_convex_closure_generalizer()) {