current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:34 2012 Optimize a model with 16926 rows, 16746 columns and 66794 nonzeros Presolve removed 24 rows and 2184 columns Presolve time: 0.13s Presolved: 16902 rows, 14562 columns, 64610 nonzeros Variable types: 0 continuous, 14562 integer (14562 binary) Root relaxation: objective 0.000000e+00, 282 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (282 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:35 2012 Optimize a model with 8462 rows, 8374 columns and 33030 nonzeros Presolve removed 24 rows and 1080 columns Presolve time: 0.07s Presolved: 8438 rows, 7294 columns, 31950 nonzeros Variable types: 0 continuous, 7294 integer (7294 binary) Root relaxation: objective 0.000000e+00, 282 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (282 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:35 2012 Optimize a model with 4230 rows, 4188 columns and 16148 nonzeros Presolve removed 24 rows and 528 columns Presolve time: 0.02s Presolved: 4206 rows, 3660 columns, 15620 nonzeros Variable types: 0 continuous, 3660 integer (3660 binary) Root relaxation: objective 0.000000e+00, 283 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (283 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:35 2012 Optimize a model with 2206 rows, 2186 columns and 8074 nonzeros Presolve removed 24 rows and 264 columns Presolve time: 0.01s Presolved: 2182 rows, 1922 columns, 7810 nonzeros Variable types: 0 continuous, 1922 integer (1922 binary) Root relaxation: objective 0.000000e+00, 287 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (287 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:35 2012 Optimize a model with 1102 rows, 1094 columns and 3670 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 1078 rows, 974 columns, 3550 nonzeros Variable types: 0 continuous, 974 integer (974 binary) Root relaxation: objective 0.000000e+00, 263 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (374 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:35 2012 Optimize a model with 550 rows, 548 columns and 1468 nonzeros Presolve removed 188 rows and 215 columns Presolve time: 0.00s Presolved: 362 rows, 333 columns, 1086 nonzeros Variable types: 0 continuous, 333 integer (333 binary) Root relaxation: objective 0.000000e+00, 165 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 142 - 0.00000 - - 0s Explored 0 nodes (536 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:35 2012 Optimize a model with 734 rows, 730 columns and 2202 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 710 rows, 658 columns, 2130 nonzeros Variable types: 0 continuous, 658 integer (658 binary) Root relaxation: objective 0.000000e+00, 262 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (262 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 3