The first two of these manifolds are hyperbolic.  The problem, I suspect, is that they are being specified as Dehn fillings on 1-cusped manifolds with essential tori.  So one needs to pick a different knot in the closed manifold to actually see the hyperbolic structure.  One way to force SnapPy to do this is to create a 1-vertex non-ideal triangulation and then use one of the edges there as the knot.  For example: 

    sage: M = Manifold('tri11.txt')
    sage: N = Manifold(M.filled_triangulation()._to_string())
    sage: N.solution_type()
    'all tetrahedra positively oriented'
    sage: closed = snappy.OrientableClosedCensus()
    sage: closed.identify(N)
    m038(1,2)

The tri12 manifold is "m032(5,2)".  I strongly suspect the tri13 manifold is *not* hyperbolic.  Instead, I suspect it is a graph manifold where one piece is the figure-8 complement, since sometimes the volume appears to be 2.0988...