current bounds on the number of colors: 0 -- 234 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:27 2012 Optimize a model with 35685 rows, 27681 columns and 133731 nonzeros Presolve removed 22 rows and 2574 columns Presolve time: 0.17s Presolved: 35663 rows, 25107 columns, 131157 nonzeros Variable types: 0 continuous, 25107 integer (25107 binary) Root relaxation: objective 0.000000e+00, 422 iterations, 0.02 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 (422 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:28 2012 Optimize a model with 17808 rows, 13875 columns and 66294 nonzeros Presolve removed 22 rows and 1276 columns Presolve time: 0.12s Presolved: 17786 rows, 12599 columns, 65018 nonzeros Variable types: 0 continuous, 12599 integer (12599 binary) Root relaxation: objective 0.000000e+00, 417 iterations, 0.01 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 (417 simplex iterations) in 0.14 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:29 2012 Optimize a model with 9021 rows, 7089 columns and 33147 nonzeros Presolve removed 22 rows and 638 columns Presolve time: 0.05s Presolved: 8999 rows, 6451 columns, 32509 nonzeros Variable types: 0 continuous, 6451 integer (6451 binary) Root relaxation: objective 0.000000e+00, 417 iterations, 0.01 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 (417 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:29 2012 Optimize a model with 4476 rows, 3579 columns and 16002 nonzeros Presolve removed 22 rows and 308 columns Presolve time: 0.02s Presolved: 4454 rows, 3271 columns, 15694 nonzeros Variable types: 0 continuous, 3271 integer (3271 binary) Root relaxation: objective 0.000000e+00, 434 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 (701 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:29 2012 Optimize a model with 2355 rows, 1941 columns and 8001 nonzeros Presolve removed 22 rows and 154 columns Presolve time: 0.01s Presolved: 2333 rows, 1787 columns, 7847 nonzeros Variable types: 0 continuous, 1787 integer (1787 binary) Root relaxation: objective 0.000000e+00, 425 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 (643 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:29 2012 Optimize a model with 1143 rows, 1005 columns and 3429 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 1121 rows, 939 columns, 3363 nonzeros Variable types: 0 continuous, 939 integer (939 binary) Root relaxation: objective 0.000000e+00, 459 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 (632 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:29 2012 Optimize a model with 537 rows, 537 columns and 1143 nonzeros Presolve removed 537 rows and 537 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 16:41:29 2012 Optimize a model with 840 rows, 771 columns and 2286 nonzeros Presolve removed 240 rows and 265 columns Presolve time: 0.00s Presolved: 600 rows, 506 columns, 1800 nonzeros Variable types: 0 continuous, 506 integer (506 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 0.00000 0 206 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (813 simplex iterations) in 0.01 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