
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:03:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1406.46.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo1406.46.lp
Reading time = 0.19 seconds
: 83408 rows, 2393 columns, 252065 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 83408 rows, 2393 columns and 252065 nonzeros
Model fingerprint: 0x2a122eb8
Variable types: 47 continuous, 2346 integer (2346 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 4.0000000
Presolve removed 12022 rows and 1 columns
Presolve time: 0.69s
Presolved: 71386 rows, 2392 columns, 216323 nonzeros
Variable types: 0 continuous, 2392 integer (2345 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2359 rows, 73745 columns, 218715 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17258    3.8682564e+01   0.000000e+00   2.589243e+04      5s
   29275    3.9000000e+01   0.000000e+00   0.000000e+00      8s
   29275    3.9000000e+01   0.000000e+00   0.000000e+00      9s
   29275    3.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.900000e+01, 29275 iterations, 7.51 seconds (4.87 work units)
Total elapsed time = 17.66s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   39.00000    0  513    9.00000   39.00000   333%     -   19s
H    0     0                      12.0000000   39.00000   225%     -   19s
     0     0   39.00000    0  730   12.00000   39.00000   225%     -   32s
     0     0   39.00000    0  694   12.00000   39.00000   225%     -   35s
     0     0   39.00000    0  726   12.00000   39.00000   225%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 31
  Cover: 9
  Clique: 4
  MIR: 89
  Zero half: 24
  RLT: 60
  BQP: 6
  PSD: 1

Explored 1 nodes (49453 simplex iterations) in 50.11 seconds (29.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 9 4 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.900000000000e+01, gap 225.0000%

Wrote result file './lp_solutions/grafo1406.46.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:51:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1406.46.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo1406.46.lp
Reading time = 0.13 seconds
: 83408 rows, 2393 columns, 252065 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 83408 rows, 2393 columns and 252065 nonzeros
Model fingerprint: 0x2a122eb8
Variable types: 47 continuous, 2346 integer (2346 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 4.0000000
Presolve removed 12022 rows and 1 columns
Presolve time: 0.47s
Presolved: 71386 rows, 2392 columns, 216323 nonzeros
Variable types: 0 continuous, 2392 integer (2345 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2359 rows, 73745 columns, 218715 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25508    3.8677514e+01   0.000000e+00   1.953229e+03      5s
   29275    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   29275    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   29275    3.9000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.900000e+01, 29275 iterations, 5.32 seconds (4.87 work units)
Total elapsed time = 12.90s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   39.00000    0  513    9.00000   39.00000   333%     -   13s
H    0     0                      12.0000000   39.00000   225%     -   13s
     0     0   39.00000    0  730   12.00000   39.00000   225%     -   22s
     0     0   39.00000    0  694   12.00000   39.00000   225%     -   24s
H    0     0                      13.0000000   39.00000   200%     -   49s
     0     0   39.00000    0  550   13.00000   39.00000   200%     -   49s

Cutting planes:
  Gomory: 1
  Cover: 4
  Clique: 3
  MIR: 18
  Zero half: 3
  RLT: 25
  PSD: 1

Explored 1 nodes (62701 simplex iterations) in 50.09 seconds (47.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 12 9 4 

Time limit reached
Best objective 1.300000000000e+01, best bound 3.900000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo1406.46.sol'

