
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:15:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5265.40.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/grafo5265.40.lp
Reading time = 0.29 seconds
: 180960 rows, 2672 columns, 545441 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 180960 rows, 2672 columns and 545441 nonzeros
Model fingerprint: 0xaac1ec7b
Variable types: 53 continuous, 2619 integer (2619 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 2.0000000
Presolve removed 63364 rows and 8 columns
Presolve time: 1.15s
Presolved: 117596 rows, 2664 columns, 355811 nonzeros
Variable types: 0 continuous, 2664 integer (2611 binary)
Found heuristic solution: objective 17.0000000
Root relaxation presolved: 2648 rows, 120244 columns, 358475 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21103    6.0907148e+01   0.000000e+00   2.352314e+05      5s
   41522    5.8749944e+01   0.000000e+00   1.260557e+05     10s
   63048    5.8699776e+01   0.000000e+00   2.065958e+04     15s
   84048    5.8691072e+01   0.000000e+00   4.141758e+03     20s
   91435    5.9000000e+01   0.000000e+00   0.000000e+00     22s
   91435    5.9000000e+01   0.000000e+00   0.000000e+00     22s
   91435    5.9000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.900000e+01, 91435 iterations, 20.55 seconds (15.97 work units)
Total elapsed time = 46.18s (DegenMoves)

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

     0     0   59.00000    0  653   17.00000   59.00000   247%     -   50s

Explored 1 nodes (109629 simplex iterations) in 50.04 seconds (49.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 17 2 

Time limit reached
Best objective 1.700000000000e+01, best bound 5.900000000000e+01, gap 247.0588%

Wrote result file './lp_solutions/grafo5265.40.sol'

