current bounds on the number of colors: 0 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 5160 rows, 7284 columns and 22320 nonzeros Presolve removed 28 rows and 1680 columns Presolve time: 0.06s Presolved: 5132 rows, 5604 columns, 20640 nonzeros Variable types: 0 continuous, 5604 integer (5604 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 0.07 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 2640 rows, 3684 columns and 11160 nonzeros Presolve removed 28 rows and 840 columns Presolve time: 0.02s Presolved: 2612 rows, 2844 columns, 10320 nonzeros Variable types: 0 continuous, 2844 integer (2844 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 0.02 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 1380 rows, 1884 columns and 5580 nonzeros Presolve removed 28 rows and 420 columns Presolve time: 0.01s Presolved: 1352 rows, 1464 columns, 5160 nonzeros Variable types: 0 continuous, 1464 integer (1464 binary) Root relaxation: objective 0.000000e+00, 160 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 (160 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 708 rows, 924 columns and 2604 nonzeros Presolve removed 28 rows and 196 columns Presolve time: 0.00s Presolved: 680 rows, 728 columns, 2408 nonzeros Variable types: 0 continuous, 728 integer (728 binary) Root relaxation: objective 0.000000e+00, 158 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 (158 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 372 rows, 444 columns and 1116 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 344 rows, 360 columns, 1032 nonzeros Variable types: 0 continuous, 360 integer (360 binary) Root relaxation: objective 0.000000e+00, 135 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 (135 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 204 rows, 204 columns and 372 nonzeros Presolve removed 204 rows and 204 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:34 2012 Optimize a model with 288 rows, 324 columns and 744 nonzeros Presolve removed 130 rows and 163 columns Presolve time: 0.00s Presolved: 158 rows, 161 columns, 474 nonzeros Variable types: 0 continuous, 161 integer (161 binary) Root relaxation: objective 0.000000e+00, 78 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 47 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (237 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 - optimal solution found: number of colors: 3