added sucky graphviz export of kripke

analyze.py

@@ -1,9 +1,10 @@
 from __future__ import print_function
 import argparse
 import sys
-from modelbuilder import *
-
 from pycparser import parse_file, c_ast
+import graphviz as gv
+
+from modelbuilder import *
 
 func_table = {}
 enum_table = {}
@@ -181,6 +182,7 @@ if __name__ == "__main__":
     argparser.add_argument('--initial', help='initial state')
     argparser.add_argument('--ltlfile', help='file containing LTL formulae')
     argparser.add_argument('-o', '--output', dest='output', help='output NuSMV file')
+    argparser.add_argument('--dot', help='output dot file')
     args = argparser.parse_args()
 
     ast = parse_file(args.filename, use_cpp=False)
@@ -275,3 +277,21 @@ if __name__ == "__main__":
         print("-------------------")
         print(nusmv)
     
+
+    if args.dot is not None:
+        g = gv.Digraph('G')
+        
+        for state in states:
+            if state in props_by_state:
+                pstr = ",".join(props_by_state[state])
+                if state == args.initial:
+                    g.attr('node', shape='doublecircle')
+                else:
+                    g.attr('node', shape='circle')
+                g.node(state, label=state, xlabel=f"{{{pstr}}}")
+              
+                
+        
+        for t in tran_table:
+            g.edge(t[0], t[1])
+        g.render(filename=args.dot)