example

examples/tests/leaderelection_withB.spec

 Workflow
 
 forall a,b,i
-    (Inext(a,b) ∧ B(i,a,b)) -> msg += (i,b)
+    (Inext(a,b) ∧ B(a,b,i)) -> msg += (i,b)
 loop {
 	forall a
 		msg(a,a) -> leader += (a)

src/main/scala/de/tum/workflows/Preconditions.scala

@@ -100,7 +100,7 @@ object Preconditions extends LazyLogging {
       val (repname, (vars, form)) = update
       val fixupdate = FormulaFunctions.fixBinding(form, boundvars -- vars)
 
-      f everywhere {
+      val res = f everywhere {
         case Fun(name, ind, params) if name == repname => {
           val renamed = fixupdate.parallelRename(vars, params)
 
@@ -112,6 +112,7 @@ object Preconditions extends LazyLogging {
           }
         }
       }
+      res
     })
   }
 

src/test/scala/de/tum/workflows/tests/papertests/LeaderElectionTest.scala

@@ -90,6 +90,13 @@ class LeaderElectionTest extends FlatSpec {
 
     val inv = And.make(inductive_inv)
 
+    val emptyinv = inv.assumeEmpty(List("msg", "leader"))
+    val impl =  Z3BSFO.debugmodelBS(knowledge land emptyinv)
+//    println(impl)
+    // knowledge /\ !emptyinv is unsat
+    // knowledge /\ emptyinv is sat
+    // !emptyinv is unsat
+
     assert(check(name, inv, knowledge, properties))
   }