
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:30:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7375.46.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/grafo7375.46.lp
Reading time = 0.25 seconds
: 148260 rows, 2483 columns, 446661 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 148260 rows, 2483 columns and 446661 nonzeros
Model fingerprint: 0xc72bb19e
Variable types: 46 continuous, 2437 integer (2437 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 3.0000000
Presolve removed 49334 rows and 8 columns
Presolve time: 1.06s
Presolved: 98926 rows, 2475 columns, 298994 nonzeros
Variable types: 0 continuous, 2475 integer (2429 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2468 rows, 101394 columns, 301469 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19759    5.2855988e+01   0.000000e+00   5.137219e+04      5s
   42310    5.2809108e+01   0.000000e+00   5.353358e+03     10s
   46262    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   46262    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   46262    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 46262 iterations, 9.79 seconds (7.48 work units)
Total elapsed time = 21.75s (DegenMoves)

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

     0     0   53.00000    0  454    8.00000   53.00000   562%     -   25s
     0     0   53.00000    0  809    8.00000   53.00000   562%     -   37s
     0     0   53.00000    0  760    8.00000   53.00000   562%     -   39s
     0     0          -    0         8.00000   53.00000   562%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 38
  Cover: 13
  Clique: 31
  MIR: 116
  Zero half: 50
  RLT: 55
  BQP: 3

Explored 1 nodes (68145 simplex iterations) in 50.03 seconds (48.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 3 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.300000000000e+01, gap 562.5000%

Wrote result file './lp_solutions/grafo7375.46.sol'

