zeminlu / comitaco

comittaco

comitaco's Issues

Java version called from MuJavaController through Runtime.getRuntime().exec depends on the environment

Java version called from MuJavaController through Runtime.getRuntime().exec depends on the environment, and may differ from that being used in the project. See lines 1014-1017 in file MuJavaController.java.

If Java version called using Runtime.getRuntime().exec is not 1.7, then mutated files (fix candidates) do not compile, and the generation of mutants is stuck in filtering out cases that do not compile.

For the time being, I fixed this issue in my setup by calling java with its fully qualified path, to make sure Java 1.7 is being called.

refinar especificaciones en pldi.bintree.BinTree

En pldi.bintree.BinTree(Integer) se define el siguiente requires

requires (\forall BinTreeNode n1; 
    \reach(root, BinTreeNode, left+right).has(n1);
    (\forall BinTreeNode m1; 
        \reach(root, BinTreeNode, left+right).has(m1); n1 != m1 ==> n1.key != m1.key));

Este siempre se cumple dado que el Invariante debería especificar

invariant (\forall BinTreeNode n; 
    \reach(root, BinTreeNode, left + right).has(n) == true;
        (\forall BinTreeNode m; 
        \reach(n.left, BinTreeNode, left + right).has(m) == true;
                m.key < n.key) &&
                (\forall BinTreeNode m;
                \reach(n.right, BinTreeNode, left + right).has(m) == true;
                m.key > n.key));

Sin embargo el invariante actual está definido como

invariant (\forall BinTreeNode n; 
    \reach(root, BinTreeNode, left + right).has(n) == true;
        (\forall BinTreeNode m; 
        \reach(n.left, BinTreeNode, left + right).has(m) == true;
                m.key <= n.key) &&
                (\forall BinTreeNode m;
                \reach(n.right, BinTreeNode, left + right).has(m) == true;
                m.key > n.key));

Que permite repetidos, sin embargo el método insertar no admite repetidos y el método remover tampoco. Con lo cual es necesario modificar el invariante para no admitir repetidos y corregir el requires del método remove acorde al mismo.