This should help getting accurate statistics (on both the

formula automaton and the synchronized product) from LBTT.
Idea from Jean-Michel Couvreur.

* src/tgbaalgos/lbtt.cc (nonacceptant_lbtt_bfs): New class.
(nonacceptant_lbtt_reachable): New function.
* src/tgbaalgos/lbtt.hh (nonacceptant_lbtt_reachable): New
function.
* src/tgbatest/ltl2tgba.cc (main): Call nonacceptant_lbtt_reachable
if the -T option is used.
* src/tgbatest/spotlbtt.test: Setup the -T variants, disabled by
default.

src/tgbatest/ltl2tgba.cc

@@ -76,6 +76,8 @@ syntax(char* prog)
 	    << "  -S   convert to explicit automata, and number states "
 	    << "in BFS order" << std::endl
 	    << "  -t   display reachable states in LBTT's format" << std::endl
+	    << "  -T   display reachable states in LBTT's format w/o "
+	    << "acceptance conditions" << std::endl
 	    << "  -v   display the BDD variables used by the automaton"
 	    << std::endl
 	    << "  -X   do not compute an automaton, read it from a file"
@@ -197,6 +199,10 @@ main(int argc, char** argv)
 	{
 	  output = 6;
 	}
+      else if (!strcmp(argv[formula_index], "-T"))
+	{
+	  output = 7;
+	}
       else if (!strcmp(argv[formula_index], "-v"))
 	{
 	  output = 5;
@@ -318,6 +324,9 @@ main(int argc, char** argv)
 	case 6:
 	  spot::lbtt_reachable(std::cout, a);
 	  break;
+	case 7:
+	  spot::nonacceptant_lbtt_reachable(std::cout, a);
+	  break;
 	default:
 	  assert(!"unknown output option");
 	}

src/tgbatest/spotlbtt.test

@@ -42,6 +42,13 @@ Algorithm
    Enabled = yes
 }
 
+Algorithm
+{
+   Name = "Spot (Couvreur -- LaCIM), fake"
+   Path = "${LBTT_TRANSLATE} --spot './ltl2tgba -F -T'"
+   Enabled = no
+}
+
 Algorithm
 {
    Name = "Spot (Couvreur -- FM)"
@@ -56,11 +63,21 @@ Algorithm
    Enabled = yes
 }
 
+Algorithm
+{
+   Name = "Spot (Couvreur -- FM), fake"
+   Path = "${LBTT_TRANSLATE} --spot './ltl2tgba -F -f -T'"
+   Enabled = no
+}
+
 GlobalOptions
 {
    Rounds = 100
    Interactive = Never
 #   Verbosity = 5
+#   ComparisonCheck = no
+#   ConsistencyCheck = no
+#   IntersectionCheck = no
 }
 
 FormulaOptions