current bounds on the number of colors: 0 -- 127 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:09 2012 Optimize a model with 5545 rows, 8087 columns and 24255 nonzeros Presolve removed 36 rows and 2268 columns Presolve time: 0.07s Presolved: 5509 rows, 5819 columns, 21987 nonzeros Variable types: 0 continuous, 5819 integer (5819 binary) Root relaxation: objective 0.000000e+00, 156 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 (156 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 -- 63 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:09 2012 Optimize a model with 2793 rows, 4023 columns and 11935 nonzeros Presolve removed 36 rows and 1116 columns Presolve time: 0.02s Presolved: 2757 rows, 2907 columns, 10819 nonzeros Variable types: 0 continuous, 2907 integer (2907 binary) Root relaxation: objective 0.000000e+00, 155 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 (155 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:09 2012 Optimize a model with 1417 rows, 1991 columns and 5775 nonzeros Presolve removed 36 rows and 540 columns Presolve time: 0.01s Presolved: 1381 rows, 1451 columns, 5235 nonzeros Variable types: 0 continuous, 1451 integer (1451 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 (228 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 16:17:09 2012 Optimize a model with 729 rows, 975 columns and 2695 nonzeros Presolve removed 36 rows and 252 columns Presolve time: 0.00s Presolved: 693 rows, 723 columns, 2443 nonzeros Variable types: 0 continuous, 723 integer (723 binary) Root relaxation: objective 0.000000e+00, 154 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 (154 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 16:17:09 2012 Optimize a model with 385 rows, 467 columns and 1155 nonzeros Presolve removed 36 rows and 108 columns Presolve time: 0.00s Presolved: 349 rows, 359 columns, 1047 nonzeros Variable types: 0 continuous, 359 integer (359 binary) Root relaxation: objective 0.000000e+00, 147 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 (147 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 16:17:09 2012 Optimize a model with 213 rows, 213 columns and 385 nonzeros Presolve removed 213 rows and 213 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 16:17:09 2012 Optimize a model with 299 rows, 340 columns and 770 nonzeros Presolve removed 135 rows and 175 columns Presolve time: 0.00s Presolved: 164 rows, 165 columns, 492 nonzeros Variable types: 0 continuous, 165 integer (165 binary) Root relaxation: objective 0.000000e+00, 91 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 (271 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