current bounds on the number of colors: 0 -- 192 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:03 2012 Optimize a model with 20544 rows, 18644 columns and 79488 nonzeros Presolve removed 21 rows and 2016 columns Presolve time: 0.13s Presolved: 20523 rows, 16628 columns, 77472 nonzeros Variable types: 0 continuous, 16628 integer (16628 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:03 2012 Optimize a model with 10368 rows, 9428 columns and 39744 nonzeros Presolve removed 21 rows and 1008 columns Presolve time: 0.09s Presolved: 10347 rows, 8420 columns, 38736 nonzeros Variable types: 0 continuous, 8420 integer (8420 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 simplex iterations) in 0.10 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:03 2012 Optimize a model with 5280 rows, 4820 columns and 19872 nonzeros Presolve removed 21 rows and 504 columns Presolve time: 0.03s Presolved: 5259 rows, 4316 columns, 19368 nonzeros Variable types: 0 continuous, 4316 integer (4316 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 simplex iterations) in 0.04 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 Sat Dec 15 16:28:03 2012 Optimize a model with 2736 rows, 2516 columns and 9936 nonzeros Presolve removed 21 rows and 252 columns Presolve time: 0.01s Presolved: 2715 rows, 2264 columns, 9684 nonzeros Variable types: 0 continuous, 2264 integer (2264 binary) Root relaxation: objective 0.000000e+00, 327 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 (327 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:04 2012 Optimize a model with 1464 rows, 1364 columns and 4968 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1443 rows, 1238 columns, 4842 nonzeros Variable types: 0 continuous, 1238 integer (1238 binary) Root relaxation: objective 0.000000e+00, 292 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 (292 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:04 2012 Optimize a model with 828 rows, 788 columns and 2484 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 807 rows, 725 columns, 2421 nonzeros Variable types: 0 continuous, 725 integer (725 binary) Root relaxation: objective 0.000000e+00, 310 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 (310 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 16:28:04 2012 Optimize a model with 404 rows, 404 columns and 828 nonzeros Presolve removed 404 rows and 404 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 16:28:04 2012 Optimize a model with 616 rows, 596 columns and 1656 nonzeros Presolve removed 200 rows and 225 columns Presolve time: 0.00s Presolved: 416 rows, 371 columns, 1248 nonzeros Variable types: 0 continuous, 371 integer (371 binary) Root relaxation: objective 0.000000e+00, 181 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 0 160 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (565 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