increase time limit well above time needed

examples/programs/vacid_0_binary_heaps/proofs/why3session.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE why3session SYSTEM "why3session.dtd">
 <why3session
- name="proofs/why3session.xml">
+ name="programs/vacid_0_binary_heaps/proofs/why3session.xml">
  <prover
   id="alt-ergo"
   name="Alt-Ergo"
@@ -547,16 +547,16 @@
  <file
   name="../bag_of_integers.why"
   verified="true"
-  expanded="false">
+  expanded="true">
   <theory
    name="Bag_integers"
    verified="true"
-   expanded="false">
+   expanded="true">
    <goal
     name="Min_bag_union1"
     sum="04c0b6bedee5a10eed6790270e760042"
     proved="true"
-    expanded="false"
+    expanded="true"
     shape="ainfix =amin_bagV0aminV2amin_bagV1Iainfix =V0aaddV2V1F">
     <proof
      prover="z3-3"
@@ -609,10 +609,10 @@
     </proof>
     <proof
      prover="spass"
-     timelimit="10"
+     timelimit="20"
      edited=""
      obsolete="false">
-     <result status="valid" time="9.18"/>
+     <result status="valid" time="9.36"/>
     </proof>
    </goal>
    <goal