current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:12 2012 Optimize a model with 17485 rows, 17950 columns and 69654 nonzeros Presolve removed 26 rows and 2444 columns Presolve time: 0.13s Presolved: 17459 rows, 15506 columns, 67210 nonzeros Variable types: 0 continuous, 15506 integer (15506 binary) Root relaxation: objective 0.000000e+00, 310 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 (310 simplex iterations) in 0.15 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:12 2012 Optimize a model with 8837 rows, 9067 columns and 34827 nonzeros Presolve removed 26 rows and 1222 columns Presolve time: 0.08s Presolved: 8811 rows, 7845 columns, 33605 nonzeros Variable types: 0 continuous, 7845 integer (7845 binary) Root relaxation: objective 0.000000e+00, 306 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 (306 simplex iterations) in 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:12 2012 Optimize a model with 4421 rows, 4531 columns and 17043 nonzeros Presolve removed 26 rows and 598 columns Presolve time: 0.03s Presolved: 4395 rows, 3933 columns, 16445 nonzeros Variable types: 0 continuous, 3933 integer (3933 binary) Root relaxation: objective 0.000000e+00, 305 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 (446 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:12 2012 Optimize a model with 2213 rows, 2263 columns and 8151 nonzeros Presolve removed 26 rows and 286 columns Presolve time: 0.01s Presolved: 2187 rows, 1977 columns, 7865 nonzeros Variable types: 0 continuous, 1977 integer (1977 binary) Root relaxation: objective 0.000000e+00, 286 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 (286 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 16:27:12 2012 Optimize a model with 1109 rows, 1129 columns and 3705 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 1083 rows, 999 columns, 3575 nonzeros Variable types: 0 continuous, 999 integer (999 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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 16:27:12 2012 Optimize a model with 557 rows, 562 columns and 1482 nonzeros Presolve removed 197 rows and 227 columns Presolve time: 0.00s Presolved: 360 rows, 335 columns, 1080 nonzeros Variable types: 0 continuous, 335 integer (335 binary) Root relaxation: objective 0.000000e+00, 176 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 0 152 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (543 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 16:27:13 2012 Optimize a model with 741 rows, 751 columns and 2223 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 715 rows, 673 columns, 2145 nonzeros Variable types: 0 continuous, 673 integer (673 binary) Root relaxation: objective 0.000000e+00, 277 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 (277 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