spun and fell behind Frentzen and Trulli. During the safety car period, Da Matta made a pit stop to correct a technical problem. At the lap 37 restart, Da Matta and Webber passed Villeneuve. Räikkönen overtook Alonso on the start/finish straight into the Senna S chicane for fourth on the 38th lap. Further round the lap, he passed Ralf Schumacher on the outside line going into the Descida do Lago corner. Frentzen in eighth was overtaken by Webber and Villeneuve re-passed Da Matta for tenth during the same lap. On lap 40, Alonso steered to the inside to extract additional grip and passed Ralf Schumacher at Mergulho turn for fourth position. As Barrichello gained on race leader Coulthard, the stewards informed Renault on the 42nd lap that Alonso had been issued a drive-through penalty because he was deemed to have overtaken Ralf Schumacher under yellow flag conditions. He took the penalty on the same lap and fell from fourth to ninth. On the 44th lap, Webber lost control of the rear of his car at the Curva do Sol corner and spun through 360 degrees. He avoided contact with the barrier and merged onto the track after Frentzen, Alonso and Villeneuve passed him. At the front of the field, Coulthard (on worn tyres) ran wide on the approach to the Senna S chicane and Barrichello used the driver error to pass him for first position on lap 45. Barrichello began to pull away from Coulthard, extending his lead to 4.2 seconds by lap 46's conclusion, who in turn, was 15 seconds ahead of his teammate Räikkönen. On lap 47, Barrichello pulled off at the side of the circuit to retire from the event for the ninth consecutive year. A fuel feed problem was suspected to have caused Barrichello's retirement until it was traced to a malfunctioning in-car computer calculating it had more fuel than normal and an error with Ferrari's telemetry did not inform the team he had run out of fuel. Coulthard returned to the lead, eighteen seconds ahead of his teammate Räikkönen in second and Fisichella third. By the 48th lap, drivers became concerned over fuel. Ralf Schumacher made a pit stop and rejoined in ninth. Alonso and Frentzen overtook Trulli and demoted him to sixth during laps 49 and 50. On the 52nd lap, Coulthard made a pit stop for tyres after a minor loss of car