current bounds on the number of colors: 0 -- 240 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:57 2012 Optimize a model with 38640 rows, 29120 columns and 144000 nonzeros Presolve removed 22 rows and 2640 columns Presolve time: 0.18s Presolved: 38618 rows, 26480 columns, 141360 nonzeros Variable types: 0 continuous, 26480 integer (26480 binary) Root relaxation: objective 0.000000e+00, 434 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 (434 simplex iterations) in 0.22 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:57 2012 Optimize a model with 19440 rows, 14720 columns and 72000 nonzeros Presolve removed 22 rows and 1320 columns Presolve time: 0.13s Presolved: 19418 rows, 13400 columns, 70680 nonzeros Variable types: 0 continuous, 13400 integer (13400 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 simplex iterations) in 0.15 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:58 2012 Optimize a model with 9840 rows, 7520 columns and 36000 nonzeros Presolve removed 22 rows and 660 columns Presolve time: 0.06s Presolved: 9818 rows, 6860 columns, 35340 nonzeros Variable types: 0 continuous, 6860 integer (6860 binary) Root relaxation: objective 0.000000e+00, 441 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 (441 simplex iterations) in 0.08 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:58 2012 Optimize a model with 5040 rows, 3920 columns and 18000 nonzeros Presolve removed 22 rows and 330 columns Presolve time: 0.02s Presolved: 5018 rows, 3590 columns, 17670 nonzeros Variable types: 0 continuous, 3590 integer (3590 binary) Root relaxation: objective 0.000000e+00, 454 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 (744 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:58 2012 Optimize a model with 2480 rows, 2000 columns and 8400 nonzeros Presolve removed 22 rows and 154 columns Presolve time: 0.01s Presolved: 2458 rows, 1846 columns, 8246 nonzeros Variable types: 0 continuous, 1846 integer (1846 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:58 2012 Optimize a model with 1200 rows, 1040 columns and 3600 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 1178 rows, 974 columns, 3534 nonzeros Variable types: 0 continuous, 974 integer (974 binary) Root relaxation: objective 0.000000e+00, 476 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 (720 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 16:43:58 2012 Optimize a model with 560 rows, 560 columns and 1200 nonzeros Presolve removed 560 rows and 560 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 16:43:58 2012 Optimize a model with 880 rows, 800 columns and 2400 nonzeros Presolve removed 242 rows and 265 columns Presolve time: 0.00s Presolved: 638 rows, 535 columns, 1914 nonzeros Variable types: 0 continuous, 535 integer (535 binary) Root relaxation: objective 0.000000e+00, 242 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (861 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