current bounds on the number of colors: 0 -- 179 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:32 2012 Optimize a model with 74850 rows, 16770 columns and 239944 nonzeros Presolve time: 0.23s Presolved: 74850 rows, 16770 columns, 239944 nonzeros Variable types: 0 continuous, 16770 integer (16770 binary) Root relaxation: objective 0.000000e+00, 706 iterations, 0.07 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 (1101 simplex iterations) in 0.41 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:33 2012 Optimize a model with 37095 rows, 8715 columns and 118624 nonzeros Presolve time: 0.15s Presolved: 37095 rows, 8715 columns, 118624 nonzeros Variable types: 0 continuous, 8715 integer (8715 binary) Root relaxation: objective 0.000000e+00, 495 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 (895 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:34 2012 Optimize a model with 18637 rows, 4777 columns and 59312 nonzeros Presolve time: 0.07s Presolved: 18637 rows, 4777 columns, 59312 nonzeros Variable types: 0 continuous, 4777 integer (4777 binary) Root relaxation: objective 0.000000e+00, 381 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 (725 simplex iterations) in 0.11 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:34 2012 Optimize a model with 9408 rows, 2808 columns and 29656 nonzeros Presolve time: 0.03s Presolved: 9408 rows, 2808 columns, 29656 nonzeros Variable types: 0 continuous, 2808 integer (2808 binary) Root relaxation: objective 0.000000e+00, 377 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 (709 simplex iterations) in 0.05 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:34 2012 Optimize a model with 4374 rows, 1734 columns and 13480 nonzeros Presolve time: 0.01s Presolved: 4374 rows, 1734 columns, 13480 nonzeros Variable types: 0 continuous, 1734 integer (1734 binary) Root relaxation: objective 0.000000e+00, 392 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 128 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3154 simplex iterations) in 0.21 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:35 2012 Optimize a model with 1857 rows, 1197 columns and 5392 nonzeros Presolve removed 179 rows and 179 columns Presolve time: 0.00s Presolved: 1678 rows, 1018 columns, 5034 nonzeros Variable types: 0 continuous, 1018 integer (1018 binary) Root relaxation: objective 0.000000e+00, 190 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 0 179 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (725 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:35 2012 Optimize a model with 2696 rows, 1376 columns and 8088 nonzeros Presolve time: 0.01s Presolved: 2696 rows, 1376 columns, 8088 nonzeros Variable types: 0 continuous, 1376 integer (1376 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 0.00000 0 354 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 489 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 7 Clique: 2 Zero half: 729 Explored 0 nodes (7997 simplex iterations) in 1.04 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:36:36 2012 Optimize a model with 3535 rows, 1555 columns and 10784 nonzeros Presolve time: 0.01s Presolved: 3535 rows, 1555 columns, 10784 nonzeros Variable types: 0 continuous, 1555 integer (1555 binary) Root relaxation: objective 0.000000e+00, 418 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 334 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 1s 0 0 0.00000 0 332 - 0.00000 - - 1s 0 0 0.00000 0 312 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 2s 0 0 0.00000 0 300 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 290 - 0.00000 - - 3s 0 0 0.00000 0 292 - 0.00000 - - 3s 0 0 0.00000 0 284 - 0.00000 - - 3s 0 0 0.00000 0 278 - 0.00000 - - 4s 0 0 0.00000 0 252 - 0.00000 - - 4s 0 0 0.00000 0 256 - 0.00000 - - 5s 0 0 0.00000 0 256 - 0.00000 - - 5s 0 2 0.00000 0 256 - 0.00000 - - 5s 514 257 infeasible 21 - 0.00000 - 130 10s 608 291 0.00000 13 302 - 0.00000 - 124 15s 612 293 0.00000 14 280 - 0.00000 - 123 21s 615 295 0.00000 10 246 - 0.00000 - 123 25s 716 297 0.00000 28 312 - 0.00000 - 222 30s 1103 189 0.00000 30 300 - 0.00000 - 213 35s 1469 61 0.00000 32 319 - 0.00000 - 213 40s 1838 91 infeasible 33 - 0.00000 - 212 45s 2196 93 infeasible 36 - 0.00000 - 213 50s 2482 71 infeasible 27 - 0.00000 - 218 55s 2766 65 infeasible 33 - 0.00000 - 222 60s 3118 61 0.00000 27 339 - 0.00000 - 221 65s 3450 57 infeasible 31 - 0.00000 - 221 70s 3803 48 0.00000 29 316 - 0.00000 - 221 75s 4127 60 0.00000 25 395 - 0.00000 - 221 80s 4450 69 0.00000 27 399 - 0.00000 - 221 85s 4819 84 0.00000 28 308 - 0.00000 - 220 90s 5148 83 infeasible 27 - 0.00000 - 220 95s 5483 90 0.00000 25 348 - 0.00000 - 220 100s 5795 92 0.00000 30 363 - 0.00000 - 221 105s 6113 88 0.00000 30 306 - 0.00000 - 221 110s 6420 73 infeasible 33 - 0.00000 - 222 115s 6764 63 infeasible 24 - 0.00000 - 222 120s 7046 53 infeasible 27 - 0.00000 - 223 125s 7347 34 0.00000 31 327 - 0.00000 - 223 130s 7639 14 infeasible 26 - 0.00000 - 224 135s 7955 8 infeasible 25 - 0.00000 - 224 140s Cutting planes: Zero half: 10 Explored 8080 nodes (1865291 simplex iterations) in 142.23 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5