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fail gracefully on interpolation errors

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This commit is contained in:
Ken McMillan 2015-07-10 14:39:11 -07:00
parent 1cf24f7cdc
commit e6516f549d
5 changed files with 74 additions and 16 deletions
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22
src/interp/iz3translate.cpp
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@ -2041,11 +2041,23 @@ public:
locality.clear();
#endif
iproof = iz3proof_itp::create(this,range_downward(i),weak_mode());
Iproof::node ipf = translate_main(proof);
ast itp = iproof->interpolate(ipf);
itps.push_back(itp);
delete iproof;
clear_translation();
try {
Iproof::node ipf = translate_main(proof);
ast itp = iproof->interpolate(ipf);
itps.push_back(itp);
delete iproof;
clear_translation();
}
catch (const iz3proof_itp::proof_error &) {
delete iproof;
clear_translation();
throw iz3proof::proof_error();
}
catch (const unsupported &exc) {
delete iproof;
clear_translation();
throw exc;
}
}
// Very simple proof -- lemma of the empty clause with computed interpolation
iz3proof::node Ipf = dst.make_lemma(std::vector<ast>(),itps); // builds result in dst