I reexamine the phenomena of the chromomagnetic gluon condensation in Yang-Mills theory. The extension of the Heisenberg-Euler Lagrangian to the Yang-Mills theory allows to predict the chromomagnetic gluon condensation. The energy density curve crosses the zero energy level of the perturbative vacuum state at nonzero angle and continuously enters into the negative energy density region. At the crossing point and further down the effective coupling constant is small and demonstrate that the true vacuum state of the Yang-Mills theory is below the perturbative vacuum state and is described by the nonzero chromomagnetic gluon condensate. The renormalisation group analyses allows to express the energy momentum tensor, its trace and the vacuum magnetic permeabilities in terms of effective coupling constant and Callan-Symanzik beta function. In the vacuum the energy-momentum tensor is proportional to the space-time metric and induces a negative cosmological constant.