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| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2021-05-27 15:02:43 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-05-27 20:02:43 +0000 |
| commit | 8d63f44d93ae91c5b89a9cf866ba33c954465398 (patch) | |
| tree | d38a3f502cbfc3ae0a50a9e9e32788f14c72d37f | |
| parent | c95d4c5473e8c26832fef89a9a42275517a42613 (diff) | |
Fix spurious assertion for trivial abduction (#6629)
Fixes 2nd benchmark from #6605.
| -rw-r--r-- | src/smt/abduction_solver.cpp | 26 | ||||
| -rw-r--r-- | test/regress/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | test/regress/regress0/issue6605-2-abd-triv.smt2 | 4 |
3 files changed, 19 insertions, 12 deletions
diff --git a/src/smt/abduction_solver.cpp b/src/smt/abduction_solver.cpp index 6be05c6b7..ff1337fe1 100644 --- a/src/smt/abduction_solver.cpp +++ b/src/smt/abduction_solver.cpp @@ -105,20 +105,22 @@ bool AbductionSolver::getAbductInternal(Node& abd) } // get the grammar type for the abduct Node agdtbv = d_sssf.getAttribute(SygusSynthFunVarListAttribute()); - Assert(!agdtbv.isNull()); - Assert(agdtbv.getKind() == kind::BOUND_VAR_LIST); - // convert back to original - // must replace formal arguments of abd with the free variables in the - // input problem that they correspond to. - std::vector<Node> vars; - std::vector<Node> syms; - SygusVarToTermAttribute sta; - for (const Node& bv : agdtbv) + if(!agdtbv.isNull()) { - vars.push_back(bv); - syms.push_back(bv.hasAttribute(sta) ? bv.getAttribute(sta) : bv); + Assert(agdtbv.getKind() == kind::BOUND_VAR_LIST); + // convert back to original + // must replace formal arguments of abd with the free variables in the + // input problem that they correspond to. + std::vector<Node> vars; + std::vector<Node> syms; + SygusVarToTermAttribute sta; + for (const Node& bv : agdtbv) + { + vars.push_back(bv); + syms.push_back(bv.hasAttribute(sta) ? bv.getAttribute(sta) : bv); + } + abd = abd.substitute(vars.begin(), vars.end(), syms.begin(), syms.end()); } - abd = abd.substitute(vars.begin(), vars.end(), syms.begin(), syms.end()); // if check abducts option is set, we check the correctness if (options::checkAbducts()) diff --git a/test/regress/CMakeLists.txt b/test/regress/CMakeLists.txt index 817ddc2ba..81e5ca8c6 100644 --- a/test/regress/CMakeLists.txt +++ b/test/regress/CMakeLists.txt @@ -660,6 +660,7 @@ set(regress_0_tests regress0/issue5540-2-dump-model.smt2 regress0/issue5540-model-decls.smt2 regress0/issue5550-num-children.smt2 + regress0/issue6605-2-abd-triv.smt2 regress0/ite_arith.smt2 regress0/ite_real_int_type.smtv1.smt2 regress0/ite_real_valid.smtv1.smt2 diff --git a/test/regress/regress0/issue6605-2-abd-triv.smt2 b/test/regress/regress0/issue6605-2-abd-triv.smt2 new file mode 100644 index 000000000..7eaaff6b5 --- /dev/null +++ b/test/regress/regress0/issue6605-2-abd-triv.smt2 @@ -0,0 +1,4 @@ +; COMMAND-LINE: --produce-abducts +; EXPECT: (define-fun A () Bool true) +(set-logic ALL) +(get-abduct A true) |