current bounds on the number of colors: 0 -- 194 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:32 2012 Optimize a model with 20467 rows, 19027 columns and 79637 nonzeros Presolve removed 21 rows and 2037 columns Presolve time: 0.13s Presolved: 20446 rows, 16990 columns, 77600 nonzeros Variable types: 0 continuous, 16990 integer (16990 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:32 2012 Optimize a model with 10226 rows, 9521 columns and 39408 nonzeros Presolve removed 21 rows and 1008 columns Presolve time: 0.09s Presolved: 10205 rows, 8513 columns, 38400 nonzeros Variable types: 0 continuous, 8513 integer (8513 binary) Root relaxation: objective 0.000000e+00, 325 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 (325 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 16:28:32 2012 Optimize a model with 5210 rows, 4865 columns and 19704 nonzeros Presolve removed 21 rows and 504 columns Presolve time: 0.03s Presolved: 5189 rows, 4361 columns, 19200 nonzeros Variable types: 0 continuous, 4361 integer (4361 binary) Root relaxation: objective 0.000000e+00, 318 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 (318 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 16:28:33 2012 Optimize a model with 2702 rows, 2537 columns and 9852 nonzeros Presolve removed 21 rows and 252 columns Presolve time: 0.01s Presolved: 2681 rows, 2285 columns, 9600 nonzeros Variable types: 0 continuous, 2285 integer (2285 binary) Root relaxation: objective 0.000000e+00, 324 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 (324 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 16:28:33 2012 Optimize a model with 1448 rows, 1373 columns and 4926 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.00s Presolved: 1427 rows, 1247 columns, 4800 nonzeros Variable types: 0 continuous, 1247 integer (1247 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 (443 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 16:28:33 2012 Optimize a model with 821 rows, 791 columns and 2463 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 800 rows, 728 columns, 2400 nonzeros Variable types: 0 continuous, 728 integer (728 binary) Root relaxation: objective 0.000000e+00, 311 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 (504 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 16:28:33 2012 Optimize a model with 403 rows, 403 columns and 821 nonzeros Presolve removed 403 rows and 403 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 16:28:33 2012 Optimize a model with 612 rows, 597 columns and 1642 nonzeros Presolve removed 198 rows and 221 columns Presolve time: 0.00s Presolved: 414 rows, 376 columns, 1242 nonzeros Variable types: 0 continuous, 376 integer (376 binary) Root relaxation: objective 0.000000e+00, 198 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 0 159 - 0.00000 - - 0s Explored 0 nodes (597 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