...
brk(0xaebb000)                          = 0xaebb000 <0.000013>
brk(0xaee4000)                          = 0xaee4000 <0.000018>
brk(0xaf0d000)                          = 0xaf0d000 <0.000018>
brk(0xaf03000)                          = 0xaf03000 <0.000023>
brk(0xaf2c000)                          = 0xaf2c000 <0.000023>
...