This thesis proposes to present several extensions that have been added to the Cubicle model checker.Cubicle is a software allowing to automatically check the safety of parameterized systems using model checking modulo theory techniques.The first contribution made by this thesis consists in the implementation of a new reachability algorithm called FAR (for Forward Abstracted Reachabilty). FAR is an algorithm involving both backward reachability analysis techniques already implemented in Cubicle as well as forward reachability analysis techniques.The second contribution consists of multiple additions inspired by artificial intelligence methods to improve the automatic generation of Cubicle invariants.Finally, the last contribution has increa...