The third and final day of testing before a belated summer break for Ducati test riders Vittoriano Guareschi and Niccolo Canepa concluded at Mugello on Thursday.
While Guareschi continued working on the development of next year's GP9, Canapa completed two long runs in the hot conditions and recorded a best time of 1min 51.2secs.
"We are satisfied with the job we were able to do in these days," said Filippo Preziosi. "The development of the GP9 proceeds well and we got some positive feedback from the bike despite the hot and difficult conditions. A big thank goes to the Ducati technicians for the great job they made during the last months.
"A special thank also to the guys of the Official MotoGP Team that sacrificed three days of holiday in order to allow us to run the tests not only with Vitto but with Niccolo and Sete also."
Gibernau, back in test action for the third time after retiring from MotoGP almost two years ago, finished testing after day two.
The former world championship runner-up had lapped consistently around the 1min 50.5secs mark with race tyres and set a best time of 1min 48.9secs with qualifying tyres, but his future intentions remain unclear with Ducati indicting that Marco Melandri will keep his race seat for Brno.
The fastest race lap during June's Italian Grand Prix was a 1min 50.003secs by Ducati's reigning world champion Casey Stoner. Pole position was a 1min 48.130 secs by eventual race winner Valentino Rossi.
Canepa will take part in the Brno post-race test with the Bridgestone Test Team, but it is not yet known if Gibernau will also be present for a test that will allow accurate comparisons with lap times set during the Czech Republic Grand Prix.