* src/tgbatest/ltl2tgba.cc: Simplify using

emptiness_check_instantiator.
* src/tgba/tgba.cc, src/tgba/tgba.hh
(tgba::number_of_acceptance_conditions): Return an unsigned.
* bench/emptchk/algorithms, bench/emptchk/README,
src/tgbatest/emptchk.test, src/tgbatest/emptchke.test: Adjust
references to algorithms.
* bench/emptchk/pml-clserv.sh, bench/emptchk/pml-eeaean.sh: Quote
variables properly.

bench/emptchk/README

@@ -176,20 +176,22 @@ This directory contains:
 ==========================
 
   Here are the short names for the algorithms used in the outputs.
+  ltl-*.sh tests use names from the left column, and pml-*.sh tests
+  use names from the right column.
 
-    Cou99
-    Cou99_shy-
-    Cou99_shy
-  > Cou99_rem
-  > Cou99_rem_shy-
-  > Cou99_rem_shy
-  > CVWY90
-    CVWY90_bsh
-  > GV04
-  > SE05
-    SE05_bsh
-  > Tau03
-  > Tau03_opt
+    Cou99               Cou99
+    Cou99_shy-          Cou99(shy !group)
+    Cou99_shy           Cou99(shy group)
+  > Cou99_rem           Cou99(poprem)
+  > Cou99_rem_shy-      Cou99(poprem shy !group)
+  > Cou99_rem_shy       Cou99(poprem shy group)
+  > CVWY90              CVWY90
+    CVWY90_bsh          CVWY90(bsh=4K)
+  > GV04                GV04
+  > SE05                SE05
+    SE05_bsh            SE05(bsh=4K)
+  > Tau03               Tau03
+  > Tau03_opt           Tau03_opt
 
   Only the algorithms marked with a `>' have been shown in the paper.
   `bsh' stands for `bit-state hashing'.
@@ -197,7 +199,7 @@ This directory contains:
   `Cou99_rem*' algorithms are using the `rem' field to remove
   the SCC without recomputing the SCC as described in the paper.
   The other `Cou99*' algorithms are not.  (Beware that in the paper
-  we showed the `Cou99_rem*' variants and called them `Cou99*'.)
+  we presented the `Cou99_rem*' variants and called them `Cou99*'.)
 
 
   The ltl-*.sh tests output look as follows:

bench/emptchk/algorithms

@@ -1,9 +1,9 @@
 Cou99
-Cou99_shy-
-Cou99_shy
-Cou99_rem
-Cou99_rem_shy-
-Cou99_rem_shy
+Cou99(shy !group)
+Cou99(shy group)
+Cou99(poprem)
+Cou99(poprem shy !group)
+Cou99(poprem shy group)
 GV04
 CVWY90
 SE05

bench/emptchk/pml-clserv.sh

@@ -34,13 +34,13 @@ do
   echo "  $model"
   echo "+++++++++++++++++++++"
 
-  cat $FORMULAE |
+  cat "$FORMULAE" |
   while read formula; do
     echo "-----------------------------------------------------------"
     # echo "###  formula: $formula"
-    cat $ALGORITHMS |
+    cat "$ALGORITHMS" |
     while read algo; do
-      $LTL2TGBA -0 -e$algo $opts -Pmodels/$model "$formula"
+      "$LTL2TGBA" -0 -e"$algo" $opts -Pmodels/$model "$formula"
     done
   done
 done

bench/emptchk/pml-eeaean.sh

@@ -34,13 +34,13 @@ do
   echo "  $model"
   echo "+++++++++++++++++++++"
 
-  cat $FORMULAE |
+  cat "$FORMULAE" |
   while read formula; do
     echo "-----------------------------------------------------------"
     echo "###  formula: $formula"
-    cat $ALGORITHMS |
+    cat "$ALGORITHMS" |
     while read algo; do
-      $LTL2TGBA -0 -e$algo $opts -Pmodels/$model "$formula"
+      "$LTL2TGBA" -0 -e"$algo" $opts -Pmodels/$model "$formula"
     done
   done
 done