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fixes #1171

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-07-27 08:46:20 -07:00
parent d3e1d250a7
commit 6558999cef
5 changed files with 11 additions and 13 deletions
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8
src/math/simplex/model_based_opt.cpp
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@ -18,8 +18,9 @@ Revision History:
--*/
#include "model_based_opt.h"
#include "uint_set.h"
#include "math/simplex/model_based_opt.h"
#include "util/uint_set.h"
#include "util/z3_exception.h"
std::ostream& operator<<(std::ostream& out, opt::ineq_type ie) {
switch (ie) {
@ -868,6 +869,9 @@ namespace opt {
for (unsigned i = 0; i < mod_rows.size(); ++i) {
D = lcm(D, m_rows[mod_rows[i]].m_mod);
}
if (D.is_zero()) {
throw default_exception("modulo 0 is not defined");
}
TRACE("opt", display(tout << "lcm: " << D << " tableau\n"););
rational val_x = m_var2value[x];
rational u = mod(val_x, D);