current bounds on the number of colors: 0 -- 243 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:13 2012 Optimize a model with 35212 rows, 29692 columns and 134310 nonzeros Presolve removed 25 rows and 3025 columns Presolve time: 0.15s Presolved: 35187 rows, 26667 columns, 131285 nonzeros Variable types: 0 continuous, 26667 integer (26667 binary) Root relaxation: objective 0.000000e+00, 414 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 (414 simplex iterations) in 0.19 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 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:13 2012 Optimize a model with 17583 rows, 14869 columns and 66600 nonzeros Presolve removed 25 rows and 1500 columns Presolve time: 0.12s Presolved: 17558 rows, 13369 columns, 65100 nonzeros Variable types: 0 continuous, 13369 integer (13369 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:14 2012 Optimize a model with 8913 rows, 7579 columns and 33300 nonzeros Presolve removed 25 rows and 750 columns Presolve time: 0.06s Presolved: 8888 rows, 6829 columns, 32550 nonzeros Variable types: 0 continuous, 6829 integer (6829 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 0.07 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 16:45:14 2012 Optimize a model with 4578 rows, 3934 columns and 16650 nonzeros Presolve removed 25 rows and 375 columns Presolve time: 0.02s Presolved: 4553 rows, 3559 columns, 16275 nonzeros Variable types: 0 continuous, 3559 integer (3559 binary) Root relaxation: objective 0.000000e+00, 446 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 (722 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:14 2012 Optimize a model with 2266 rows, 1990 columns and 7770 nonzeros Presolve removed 25 rows and 175 columns Presolve time: 0.01s Presolved: 2241 rows, 1815 columns, 7595 nonzeros Variable types: 0 continuous, 1815 integer (1815 binary) Root relaxation: objective 0.000000e+00, 402 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 (402 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 16:45:14 2012 Optimize a model with 1110 rows, 1018 columns and 3330 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 1085 rows, 943 columns, 3255 nonzeros Variable types: 0 continuous, 943 integer (943 binary) Root relaxation: objective 0.000000e+00, 475 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 (674 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 16:45:14 2012 Optimize a model with 532 rows, 532 columns and 1110 nonzeros Presolve removed 532 rows and 532 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 16:45:14 2012 Optimize a model with 821 rows, 775 columns and 2220 nonzeros Presolve removed 251 rows and 280 columns Presolve time: 0.00s Presolved: 570 rows, 495 columns, 1710 nonzeros Variable types: 0 continuous, 495 integer (495 binary) Root relaxation: objective 0.000000e+00, 241 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 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (807 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