current bounds on the number of colors: 0 -- 244 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:42 2012 Optimize a model with 40626 rows, 30099 columns and 150914 nonzeros Presolve removed 23 rows and 2806 columns Presolve time: 0.19s Presolved: 40603 rows, 27293 columns, 148108 nonzeros Variable types: 0 continuous, 27293 integer (27293 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 0.23 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:43 2012 Optimize a model with 20435 rows, 15215 columns and 75457 nonzeros Presolve removed 23 rows and 1403 columns Presolve time: 0.13s Presolved: 20412 rows, 13812 columns, 74054 nonzeros Variable types: 0 continuous, 13812 integer (13812 binary) Root relaxation: objective 0.000000e+00, 421 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 (421 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:43 2012 Optimize a model with 10174 rows, 7651 columns and 37110 nonzeros Presolve removed 23 rows and 690 columns Presolve time: 0.06s Presolved: 10151 rows, 6961 columns, 36420 nonzeros Variable types: 0 continuous, 6961 integer (6961 binary) Root relaxation: objective 0.000000e+00, 422 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 (422 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 16:45:43 2012 Optimize a model with 5209 rows, 3991 columns and 18555 nonzeros Presolve removed 23 rows and 345 columns Presolve time: 0.02s Presolved: 5186 rows, 3646 columns, 18210 nonzeros Variable types: 0 continuous, 3646 integer (3646 binary) Root relaxation: objective 0.000000e+00, 464 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 (464 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 16:45:44 2012 Optimize a model with 2561 rows, 2039 columns and 8659 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2538 rows, 1878 columns, 8498 nonzeros Variable types: 0 continuous, 1878 integer (1878 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 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 16:45:44 2012 Optimize a model with 1237 rows, 1063 columns and 3711 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1214 rows, 994 columns, 3642 nonzeros Variable types: 0 continuous, 994 integer (994 binary) Root relaxation: objective 0.000000e+00, 469 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 (743 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 16:45:44 2012 Optimize a model with 575 rows, 575 columns and 1237 nonzeros Presolve removed 575 rows and 575 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 16:45:44 2012 Optimize a model with 906 rows, 819 columns and 2474 nonzeros Presolve removed 246 rows and 270 columns Presolve time: 0.00s Presolved: 660 rows, 549 columns, 1980 nonzeros Variable types: 0 continuous, 549 integer (549 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (827 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