In the last few weeks, Brazilian officials have cut their forecasts of the decline to 2 percent.
Brazilian officials arrived in Washington this week for talks with the monetary fund.
But Brazilian officials have said they will not resume payments this year.
As a result, Brazilian officials said they would not proceed with the closing of the transaction.
The issue of what to do with the remains has been a delicate one for Brazilian officials.
Brazilian officials, however, make clear that they have no attention of letting the trade group disintegrate.
And at every step, Brazilian officials say they have taken great care not to damage the rain forests or the environment.
Brazilian officials say the investigation could take 10 more months.
One Brazilian official here said a 50 percent reduction over five years was a more appropriate goal.
Brazilian officials made it clear that the new policy would not be applied against any aircraft with children on board.