From: Andrew Reynolds <andrew.j.reynolds@gmail.com>
Date: Tue, 7 Aug 2018 04:04:21 +0000 (-0500)
Subject: Make flat form inferences optional in strings (#2277)
X-Git-Tag: cvc5-1.0.0~4810
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1872a6d20dc7b1d8430bff32d39b020addf74749;p=cvc5.git

Make flat form inferences optional in strings (#2277)
---

diff --git a/src/options/strings_options.toml b/src/options/strings_options.toml
index 66b312737..3498b6183 100644
--- a/src/options/strings_options.toml
+++ b/src/options/strings_options.toml
@@ -208,3 +208,12 @@ header = "options/strings_options.h"
   default    = "false"
   read_only  = true
   help       = "do length propagation based on constant splits"
+
+[[option]]
+  name       = "stringFlatForms"
+  category   = "regular"
+  long       = "strings-ff"
+  type       = "bool"
+  default    = "true"
+  read_only  = true
+  help       = "do flat form inferences"
diff --git a/src/theory/strings/theory_strings.cpp b/src/theory/strings/theory_strings.cpp
index 2ce325862..1d853a754 100644
--- a/src/theory/strings/theory_strings.cpp
+++ b/src/theory/strings/theory_strings.cpp
@@ -4915,7 +4915,10 @@ void TheoryStrings::initializeStrategy()
     addStrategyStep(CHECK_CONST_EQC);
     addStrategyStep(CHECK_EXTF_EVAL, 0);
     addStrategyStep(CHECK_CYCLES);
-    addStrategyStep(CHECK_FLAT_FORMS);
+    if (options::stringFlatForms())
+    {
+      addStrategyStep(CHECK_FLAT_FORMS);
+    }
     addStrategyStep(CHECK_EXTF_REDUCTION, 1);
     if (options::stringEager())
     {