example

examples/tests/simpleNoChoice2.spec

+Workflow
+
+forall x,s
+	P(s) -> Q += (x,s)
+forall x,s
+	Q(s) -> R += (x,s)
+
+Target
+
+R(x,s)

src/test/scala/de/tum/workflows/ltl/tests/InvariantFilesTest.scala

+package de.tum.workflows.ltl.tests
+
+import org.scalatest.FlatSpec
+import org.scalatest.Matchers._
+import org.scalatest.Inspectors._
+
+import de.tum.workflows.foltl.FOLTL._
+import de.tum.workflows.Implicits._
+import de.tum.workflows.blocks._
+import de.tum.workflows.Preconditions
+import de.tum.workflows.foltl.FormulaFunctions
+import de.tum.workflows.ExampleWorkflows
+import de.tum.workflows.toz3.InvariantChecker
+
+class InvariantFilesTest extends FlatSpec {
+
+  "InvariantChecker" should "prove simple things safe" in {
+
+    val spec = ExampleWorkflows.parseExample("tests/simpleNoChoice2").get
+
+    val inv = Forall(List("x","s"), genEq("R", List("x","s")))
+    
+    val (safe, msg) = InvariantChecker.checkInvariantFP(spec.w, inv, true)
+
+    println(msg.toString())
+    safe should be(true)
+  }
+  
+
+  def genEq(name:String, params: List[Var]) = {
+    val o1 = Fun(name, Some("t1"), params)
+    val o2 = Fun(name, Some("t2"), params)
+    Eq(o1, o2)
+  }
+}
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