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| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2021-03-15 18:09:16 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-03-15 23:09:16 +0000 |
| commit | a6b7bb2502a969811f2e4b226c9ca631858ae42a (patch) | |
| tree | 0340571ece59c51b497fd7772b9f04de7d265aae | |
| parent | 372a64559c8d8552f923fa4950aa2b7cef9d9bf3 (diff) | |
Fix rewrite for double replace (#6152)
Fixes #6142.
| -rw-r--r-- | src/theory/strings/sequences_rewriter.cpp | 2 | ||||
| -rw-r--r-- | test/regress/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | test/regress/regress1/strings/issue6142-repl-inv-rew.smt2 | 7 |
3 files changed, 9 insertions, 1 deletions
diff --git a/src/theory/strings/sequences_rewriter.cpp b/src/theory/strings/sequences_rewriter.cpp index 869c40ad8..c54cdfb50 100644 --- a/src/theory/strings/sequences_rewriter.cpp +++ b/src/theory/strings/sequences_rewriter.cpp @@ -2862,7 +2862,7 @@ Node SequencesRewriter::rewriteReplace(Node node) { // str.contains( z, w ) ----> false implies // str.replace( x, w, str.replace( z, x, y ) ) ---> str.replace( x, w, z ) - Node cmp_con2 = d_stringsEntail.checkContains(node[1], node[2][0]); + Node cmp_con2 = d_stringsEntail.checkContains(node[2][0], node[1]); if (!cmp_con2.isNull() && !cmp_con2.getConst<bool>()) { Node res = diff --git a/test/regress/CMakeLists.txt b/test/regress/CMakeLists.txt index 5c28a34cc..14752f726 100644 --- a/test/regress/CMakeLists.txt +++ b/test/regress/CMakeLists.txt @@ -2036,6 +2036,7 @@ set(regress_1_tests regress1/strings/issue5940-skc-len-conc.smt2 regress1/strings/issue5940-2-skc-len-conc.smt2 regress1/strings/issue6075-repl-len-one-rr.smt2 + regress1/strings/issue6142-repl-inv-rew.smt2 regress1/strings/kaluza-fl.smt2 regress1/strings/loop002.smt2 regress1/strings/loop003.smt2 diff --git a/test/regress/regress1/strings/issue6142-repl-inv-rew.smt2 b/test/regress/regress1/strings/issue6142-repl-inv-rew.smt2 new file mode 100644 index 000000000..fdd4f0c78 --- /dev/null +++ b/test/regress/regress1/strings/issue6142-repl-inv-rew.smt2 @@ -0,0 +1,7 @@ +; COMMAND-LINE: --strings-exp +; EXPECT: sat +(set-logic ALL) +(declare-fun x () String) +(declare-fun y () String) +(assert (= (str.++ "A" y) (str.replace x (str.++ "A" y) (str.replace (str.++ "A" (str.replace y "" "A")) x "A")))) +(check-sat) |