
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:08:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7478.38.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/grafo7478.38.lp
Reading time = 0.09 seconds
: 53984 rows, 1797 columns, 163377 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 53984 rows, 1797 columns and 163377 nonzeros
Model fingerprint: 0x475403e6
Variable types: 40 continuous, 1757 integer (1757 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]
Presolve removed 13665 rows and 60 columns
Presolve time: 0.34s
Presolved: 40319 rows, 1737 columns, 122742 nonzeros
Variable types: 0 continuous, 1737 integer (1697 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 22003 rows, 20053 columns, 86110 nonzeros


Root relaxation: objective 3.300000e+01, 930 iterations, 0.22 seconds (0.19 work units)

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

     0     0   33.00000    0  220    9.00000   33.00000   267%     -    1s
H    0     0                      15.0000000   33.00000   120%     -    1s
     0     0   33.00000    0  473   15.00000   33.00000   120%     -    3s
     0     0   33.00000    0  464   15.00000   33.00000   120%     -    3s
H    0     0                      16.0000000   33.00000   106%     -   14s
     0     0   33.00000    0  397   16.00000   33.00000   106%     -   14s
     0     0   33.00000    0  402   16.00000   33.00000   106%     -   14s
     0     0   33.00000    0  359   16.00000   33.00000   106%     -   20s
     0     0   33.00000    0  356   16.00000   33.00000   106%     -   20s
     0     0   33.00000    0  291   16.00000   33.00000   106%     -   26s
     0     0   33.00000    0  271   16.00000   33.00000   106%     -   26s
     0     0   33.00000    0  325   16.00000   33.00000   106%     -   30s
     0     0   33.00000    0  294   16.00000   33.00000   106%     -   30s
H    0     0                      17.0000000   33.00000  94.1%     -   44s
H    0     0                      18.0000000   33.00000  83.3%     -   44s
     0     0   33.00000    0  344   18.00000   33.00000  83.3%     -   44s
     0     0   33.00000    0  328   18.00000   33.00000  83.3%     -   45s
     0     2   33.00000    0  324   18.00000   33.00000  83.3%     -   47s
    31    44   33.00000    9  240   18.00000   33.00000  83.3%   298   50s

Cutting planes:
  Gomory: 1
  Cover: 1
  Clique: 6
  MIR: 66
  StrongCG: 2
  Inf proof: 1
  Zero half: 1
  RLT: 31
  BQP: 1

Explored 43 nodes (78384 simplex iterations) in 50.06 seconds (43.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 18 17 16 ... 9

Time limit reached
Best objective 1.800000000000e+01, best bound 3.300000000000e+01, gap 83.3333%

Wrote result file './lp_solutions/grafo7478.38.sol'

