cover 28
{generating cover...}
{reading tiles...}
optimize_tiling {}
28 tiles give initial coverage 0.936794
coverage 0.936794
+--> 1
cover 19
{generating cover...}
{reading tiles...}
optimize_tiling {}
19 tiles give initial coverage 0.893986
coverage 0.893986
+--> 1
cover 15
{generating cover...}
{reading tiles...}
optimize_tiling {}
15 tiles give initial coverage 0.741333
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.782130
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.805497
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.800038
relaxMargin 1.5
|  improve_tiling {}
|  +--> 0.806359
relaxMargin 1.5
|  improve_tiling {}
|  +--> 0.806072
relaxMargin 1.25
|  improve_tiling {}
|  +--> 0.805210
coverage 0.806359
+--> 0
cover 17
{generating cover...}
{reading tiles...}
optimize_tiling {}
17 tiles give initial coverage 0.833748
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.781843
relaxMargin 1.5
|  improve_tiling {}
|  +--> 0.896284
coverage 0.896284
+--> 1
cover 16
{generating cover...}
{reading tiles...}
optimize_tiling {}
16 tiles give initial coverage 0.793718
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.796878
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.849837
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.848209
relaxMargin 1.5
|  improve_tiling {}
|  +--> 0.850412
coverage 0.849837
+--> 0
optimize_tiling {}
17 tiles give initial coverage 0.862287
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.896859
relaxMargin 2.0
|  improve_tiling {}
|  +--> 0.895997
relaxMargin 1.5
|  improve_tiling {}
|  +--> 0.895518
coverage 0.896859
+--> 0
17 tiles gives coverage 0.887282
17 tiles gives desired coverage