current bounds on the number of colors: 0 -- 65 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:28 2012 Optimize a model with 2945 rows, 2170 columns and 10720 nonzeros Presolve removed 3 rows and 96 columns Presolve time: 0.02s Presolved: 2942 rows, 2074 columns, 10624 nonzeros Variable types: 0 continuous, 2074 integer (2074 binary) Root relaxation: objective 0.000000e+00, 127 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 (127 simplex iterations) in 0.02 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 -- 32 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:28 2012 Optimize a model with 1505 rows, 1130 columns and 5360 nonzeros Presolve removed 3 rows and 48 columns Presolve time: 0.01s Presolved: 1502 rows, 1082 columns, 5312 nonzeros Variable types: 0 continuous, 1082 integer (1082 binary) Root relaxation: objective 0.000000e+00, 128 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 (201 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:28 2012 Optimize a model with 785 rows, 610 columns and 2680 nonzeros Presolve removed 3 rows and 24 columns Presolve time: 0.00s Presolved: 782 rows, 586 columns, 2656 nonzeros Variable types: 0 continuous, 586 integer (586 binary) Root relaxation: objective 0.000000e+00, 121 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 (121 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% current bounds on the number of colors: 0 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:28 2012 Optimize a model with 425 rows, 350 columns and 1340 nonzeros Presolve removed 3 rows and 12 columns Presolve time: 0.00s Presolved: 422 rows, 338 columns, 1328 nonzeros Variable types: 0 continuous, 338 integer (338 binary) Root relaxation: objective 0.000000e+00, 122 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 (176 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% current bounds on the number of colors: 0 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:28 2012 Optimize a model with 245 rows, 220 columns and 670 nonzeros Presolve removed 65 rows and 68 columns Presolve time: 0.00s Presolved: 180 rows, 152 columns, 540 nonzeros Variable types: 0 continuous, 152 integer (152 binary) Root relaxation: objective 0.000000e+00, 67 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 62 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (226 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:28 2012 Optimize a model with 335 rows, 285 columns and 1005 nonzeros Presolve removed 3 rows and 9 columns Presolve time: 0.00s Presolved: 332 rows, 276 columns, 996 nonzeros Variable types: 0 continuous, 276 integer (276 binary) Root relaxation: objective 0.000000e+00, 145 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 (212 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