Try to fetch cvc4 before running sbt test so we test cvc4 as well

.gitignore

@@ -35,3 +35,5 @@ testingSheet.sc
 
 #z3
 .z3-trace
+
+travis/builds

.travis.yml

@@ -16,9 +16,10 @@ notifications:
         - regwblanc@gmail.com
     irc: "chat.freenode.net#epfl-lara"
 
-before_script: 
+before_script:
     - sbt compile
     - sbt script
+    - source travis/fetchCVC4.sh
 
 script:
-    - sbt -jvm-opts travis/jvmopts test
+    - sbt test

build.sbt

@@ -35,7 +35,7 @@ Keys.fork in Test := true
 
 logBuffered in Test := false
 
-javaOptions in Test ++= Seq("-Xss32M", "-Xmx4G", "-XX:MaxPermSize=128M")
+javaOptions in Test ++= Seq("-Xss16M", "-Xmx4G", "-XX:MaxPermSize=128M")
 
 parallelExecution in Test := false
 

travis/fetchCVC4.sh

+d=`date +%Y-%m-%d --date="2 days ago"`
+dir=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
+mkdir -p $dir/builds
+curl http://cvc4.cs.nyu.edu/builds/x86_64-linux-opt/unstable/cvc4-$d-x86_64-linux-opt -o $dir/builds/cvc4
+export PATH=$dir/builds/:$PATH

travis/jvmopts

--Dfile.encoding=UTF8
--Xms2G
--Xmx3G
--Xss6M
--XX:MaxPermSize=700M
--XX:ReservedCodeCacheSize=256M