current bounds on the number of colors: 0 -- 159 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:18 2012 Optimize a model with 10429 rows, 12691 columns and 43371 nonzeros Presolve removed 31 rows and 2449 columns Presolve time: 0.11s Presolved: 10398 rows, 10242 columns, 40922 nonzeros Variable types: 0 continuous, 10242 integer (10242 binary) Root relaxation: objective 0.000000e+00, 237 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 (351 simplex iterations) in 0.13 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 -- 79 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:18 2012 Optimize a model with 5229 rows, 6331 columns and 21411 nonzeros Presolve removed 31 rows and 1209 columns Presolve time: 0.04s Presolved: 5198 rows, 5122 columns, 20202 nonzeros Variable types: 0 continuous, 5122 integer (5122 binary) Root relaxation: objective 0.000000e+00, 234 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 (349 simplex iterations) in 0.05 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 -- 39 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:19 2012 Optimize a model with 2629 rows, 3151 columns and 10431 nonzeros Presolve removed 31 rows and 589 columns Presolve time: 0.01s Presolved: 2598 rows, 2562 columns, 9842 nonzeros Variable types: 0 continuous, 2562 integer (2562 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:19 2012 Optimize a model with 1329 rows, 1561 columns and 4941 nonzeros Presolve removed 31 rows and 279 columns Presolve time: 0.01s Presolved: 1298 rows, 1282 columns, 4662 nonzeros Variable types: 0 continuous, 1282 integer (1282 binary) Root relaxation: objective 0.000000e+00, 224 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 (224 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:19 2012 Optimize a model with 679 rows, 766 columns and 2196 nonzeros Presolve removed 31 rows and 124 columns Presolve time: 0.00s Presolved: 648 rows, 642 columns, 2072 nonzeros Variable types: 0 continuous, 642 integer (642 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 0.00 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 16:21:19 2012 Optimize a model with 419 rows, 448 columns and 1098 nonzeros Presolve removed 163 rows and 196 columns Presolve time: 0.00s Presolved: 256 rows, 252 columns, 768 nonzeros Variable types: 0 continuous, 252 integer (252 binary) Root relaxation: objective 0.000000e+00, 139 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 0 112 - 0.00000 - - 0s Explored 0 nodes (393 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 16:21:19 2012 Optimize a model with 549 rows, 607 columns and 1647 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 518 rows, 514 columns, 1554 nonzeros Variable types: 0 continuous, 514 integer (514 binary) Root relaxation: objective 0.000000e+00, 192 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 (192 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