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fix #1330. Interpolation transformation needs to handle TRANSITIVITY_STAR

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-25 20:53:10 -07:00
parent e7aa6455bc
commit c886b6d500
3 changed files with 30 additions and 13 deletions
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17
src/interp/iz3translate.cpp
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@ -29,6 +29,7 @@
#include "interp/iz3profiling.h"
#include "interp/iz3interp.h"
#include "interp/iz3proof_itp.h"
#include "ast/ast_pp.h"
#include <assert.h>
#include <algorithm>
@ -1851,6 +1852,21 @@ public:
}
break;
}
case PR_TRANSITIVITY_STAR: {
// assume the premises are x = y, y = z, z = u, u = v, ..
ast x = arg(conc(prem(proof,0)),0);
ast y = arg(conc(prem(proof,0)),1);
ast z = arg(conc(prem(proof,1)),1);
res = iproof->make_transitivity(x,y,z,args[0],args[1]);
for (unsigned i = 2; i < nprems; ++i) {
y = z;
z = arg(conc(prem(proof,i)),1);
res = iproof->make_transitivity(x,y,z,res,args[i]);
}
break;
}
case PR_QUANT_INTRO:
case PR_MONOTONICITY:
{
@ -2029,6 +2045,7 @@ public:
break;
}
default:
IF_VERBOSE(0, verbose_stream() << "Unsupported proof rule: " << expr_ref((expr*)proof.raw(), *proof.mgr()) << "\n";);
// pfgoto(proof);
// SASSERT(0 && "translate_main: unsupported proof rule");
throw unsupported();