current bounds on the number of colors: 0 -- 138 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:21 2012 Optimize a model with 6624 rows, 9616 columns and 28980 nonzeros Presolve removed 33 rows and 2277 columns Presolve time: 0.09s Presolved: 6591 rows, 7339 columns, 26703 nonzeros Variable types: 0 continuous, 7339 integer (7339 binary) Root relaxation: objective 0.000000e+00, 186 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 (186 simplex iterations) in 0.10 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 -- 69 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:21 2012 Optimize a model with 3334 rows, 4786 columns and 14280 nonzeros Presolve removed 33 rows and 1122 columns Presolve time: 0.03s Presolved: 3301 rows, 3664 columns, 13158 nonzeros Variable types: 0 continuous, 3664 integer (3664 binary) Root relaxation: objective 0.000000e+00, 186 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 (186 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 -- 34 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:21 2012 Optimize a model with 1736 rows, 2440 columns and 7140 nonzeros Presolve removed 33 rows and 561 columns Presolve time: 0.01s Presolved: 1703 rows, 1879 columns, 6579 nonzeros Variable types: 0 continuous, 1879 integer (1879 binary) Root relaxation: objective 0.000000e+00, 186 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 (186 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:21 2012 Optimize a model with 890 rows, 1198 columns and 3360 nonzeros Presolve removed 33 rows and 264 columns Presolve time: 0.00s Presolved: 857 rows, 934 columns, 3096 nonzeros Variable types: 0 continuous, 934 integer (934 binary) Root relaxation: objective 0.000000e+00, 179 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 (257 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:21 2012 Optimize a model with 514 rows, 646 columns and 1680 nonzeros Presolve removed 33 rows and 132 columns Presolve time: 0.00s Presolved: 481 rows, 514 columns, 1548 nonzeros Variable types: 0 continuous, 514 integer (514 binary) Root relaxation: objective 0.000000e+00, 157 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 (157 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 Sat Dec 15 16:18:21 2012 Optimize a model with 326 rows, 370 columns and 840 nonzeros Presolve removed 150 rows and 189 columns Presolve time: 0.00s Presolved: 176 rows, 181 columns, 528 nonzeros Variable types: 0 continuous, 181 integer (181 binary) Root relaxation: objective 0.000000e+00, 98 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 68 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (323 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 Sat Dec 15 16:18:21 2012 Optimize a model with 420 rows, 508 columns and 1260 nonzeros Presolve removed 33 rows and 99 columns Presolve time: 0.00s Presolved: 387 rows, 409 columns, 1161 nonzeros Variable types: 0 continuous, 409 integer (409 binary) Root relaxation: objective 0.000000e+00, 159 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 (159 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