
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:21:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6178.40.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/grafo6178.40.lp
Reading time = 0.09 seconds
: 54221 rows, 2029 columns, 164321 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 54221 rows, 2029 columns and 164321 nonzeros
Model fingerprint: 0x4781bdf3
Variable types: 45 continuous, 1984 integer (1984 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 3821 rows and 33 columns
Presolve time: 0.38s
Presolved: 50400 rows, 1996 columns, 153192 nonzeros
Variable types: 0 continuous, 1996 integer (1951 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 26330 rows, 26066 columns, 105052 nonzeros


Root relaxation: objective 4.000000e+01, 1292 iterations, 0.31 seconds (0.26 work units)

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

     0     0   40.00000    0  320    7.00000   40.00000   471%     -    1s
H    0     0                      11.0000000   40.00000   264%     -    1s
H    0     0                      12.0000000   40.00000   233%     -    1s
H    0     0                      13.0000000   40.00000   208%     -    6s
     0     0   40.00000    0  620   13.00000   40.00000   208%     -    6s
     0     0   40.00000    0  605   13.00000   40.00000   208%     -    6s
H    0     0                      15.0000000   40.00000   167%     -   18s
H    0     0                      16.0000000   40.00000   150%     -   18s
H    0     0                      17.0000000   40.00000   135%     -   18s
H    0     0                      18.0000000   40.00000   122%     -   18s
     0     0   40.00000    0  543   18.00000   40.00000   122%     -   18s
     0     0   40.00000    0  478   18.00000   40.00000   122%     -   18s
     0     0   40.00000    0  349   18.00000   40.00000   122%     -   27s
     0     0   40.00000    0  483   18.00000   40.00000   122%     -   28s
     0     0   40.00000    0  488   18.00000   40.00000   122%     -   41s
     0     0   40.00000    0  483   18.00000   40.00000   122%     -   41s
     0     0   40.00000    0  563   18.00000   40.00000   122%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 32
  Clique: 3
  MIR: 153
  GUB cover: 2
  Inf proof: 2
  Zero half: 135
  RLT: 61
  BQP: 1

Explored 1 nodes (60052 simplex iterations) in 50.06 seconds (43.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 8: 18 17 16 ... 7

Time limit reached
Best objective 1.800000000000e+01, best bound 4.000000000000e+01, gap 122.2222%

Wrote result file './lp_solutions/grafo6178.40.sol'

