diff options
author | Andres Noetzli <andres.noetzli@gmail.com> | 2019-02-05 10:09:15 -0800 |
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committer | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2019-02-05 12:09:15 -0600 |
commit | 104b28b4c16b90a819c8f79d60f94a42fb0c0261 (patch) | |
tree | 3e2f508eadc02ccb7d2e6d20a25cbda15f413224 /test | |
parent | b396d78982e109dc642611d32578bbca82b210cd (diff) |
Make stripConstantEndpoints() less aggressive (#2830)
Diffstat (limited to 'test')
-rw-r--r-- | test/unit/theory/theory_strings_rewriter_white.h | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/test/unit/theory/theory_strings_rewriter_white.h b/test/unit/theory/theory_strings_rewriter_white.h index 191d0ba58..c5d20daef 100644 --- a/test/unit/theory/theory_strings_rewriter_white.h +++ b/test/unit/theory/theory_strings_rewriter_white.h @@ -1220,15 +1220,33 @@ class TheoryStringsRewriterWhite : public CxxTest::TestSuite d_nm->mkNode(kind::STRING_CONCAT, x, b)); sameNormalForm(eq, f); } + + { + // (= (str.++ "A" (int.to.str n)) "A") -/-> false + Node eq = d_nm->mkNode( + kind::EQUAL, + d_nm->mkNode( + kind::STRING_CONCAT, a, d_nm->mkNode(kind::STRING_ITOS, n)), + a); + differentNormalForms(eq, f); + } } void testStripConstantEndpoints() { + TypeNode intType = d_nm->integerType(); + TypeNode strType = d_nm->stringType(); + Node empty = d_nm->mkConst(::CVC4::String("")); Node a = d_nm->mkConst(::CVC4::String("A")); + Node ab = d_nm->mkConst(::CVC4::String("AB")); + Node cd = d_nm->mkConst(::CVC4::String("CD")); + Node x = d_nm->mkVar("x", strType); + Node y = d_nm->mkVar("y", strType); + Node n = d_nm->mkVar("n", intType); { - // stripConstantEndpoints({ "" }, { "a" }, {}, {}, 0) ---> false + // stripConstantEndpoints({ "" }, { "A" }, {}, {}, 0) ---> false std::vector<Node> n1 = {empty}; std::vector<Node> n2 = {a}; std::vector<Node> nb; @@ -1237,6 +1255,18 @@ class TheoryStringsRewriterWhite : public CxxTest::TestSuite TheoryStringsRewriter::stripConstantEndpoints(n1, n2, nb, ne, 0); TS_ASSERT(!res); } + + { + // stripConstantEndpoints({ "A" }, { "A". (int.to.str n) }, {}, {}, 0) + // ---> false + std::vector<Node> n1 = {a}; + std::vector<Node> n2 = {a, d_nm->mkNode(kind::STRING_ITOS, n)}; + std::vector<Node> nb; + std::vector<Node> ne; + bool res = + TheoryStringsRewriter::stripConstantEndpoints(n1, n2, nb, ne, 0); + TS_ASSERT(!res); + } } private: |