current bounds on the number of colors: 0 -- 49 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 1369 rows, 1231 columns and 5136 nonzeros Presolve removed 7 rows and 168 columns Presolve time: 0.01s Presolved: 1362 rows, 1063 columns, 4968 nonzeros Variable types: 0 continuous, 1063 integer (1063 binary) Root relaxation: objective 0.000000e+00, 88 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 0.01 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 -- 24 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 709 rows, 643 columns and 2568 nonzeros Presolve removed 7 rows and 84 columns Presolve time: 0.00s Presolved: 702 rows, 559 columns, 2484 nonzeros Variable types: 0 continuous, 559 integer (559 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (78 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 -- 12 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 379 rows, 349 columns and 1284 nonzeros Presolve removed 7 rows and 42 columns Presolve time: 0.00s Presolved: 372 rows, 307 columns, 1242 nonzeros Variable types: 0 continuous, 307 integer (307 binary) Root relaxation: objective 0.000000e+00, 73 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 (73 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 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 214 rows, 202 columns and 642 nonzeros Presolve removed 7 rows and 21 columns Presolve time: 0.00s Presolved: 207 rows, 181 columns, 621 nonzeros Variable types: 0 continuous, 181 integer (181 binary) Root relaxation: objective 0.000000e+00, 79 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 (122 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 Fri Dec 14 18:19:50 2012 Optimize a model with 104 rows, 104 columns and 214 nonzeros Presolve removed 104 rows and 104 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 Fri Dec 14 18:19:50 2012 Optimize a model with 159 rows, 153 columns and 428 nonzeros Presolve removed 49 rows and 56 columns Presolve time: 0.00s Presolved: 110 rows, 97 columns, 330 nonzeros Variable types: 0 continuous, 97 integer (97 binary) Root relaxation: objective 0.000000e+00, 47 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 42 - 0.00000 - - 0s Explored 0 nodes (134 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