
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:29:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7202.42.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/grafo7202.42.lp
Reading time = 0.24 seconds
: 148305 rows, 2760 columns, 447548 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 148305 rows, 2760 columns and 447548 nonzeros
Model fingerprint: 0x5609e707
Variable types: 55 continuous, 2705 integer (2705 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, 6e+01]
Found heuristic solution: objective 3.0000000
Presolve removed 40673 rows and 27 columns
Presolve time: 1.13s
Presolved: 107632 rows, 2733 columns, 325936 nonzeros
Variable types: 0 continuous, 2733 integer (2678 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2724 rows, 110356 columns, 328669 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17167    5.7734391e+01   0.000000e+00   1.365911e+05      5s
   37775    5.6652601e+01   0.000000e+00   1.232664e+04     10s
   57431    5.6635975e+01   0.000000e+00   8.369060e+03     15s
   76151    5.6632324e+01   0.000000e+00   3.559148e+01     20s
   78441    5.7000000e+01   0.000000e+00   0.000000e+00     21s
   78441    5.7000000e+01   0.000000e+00   0.000000e+00     21s
   78441    5.7000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 5.700000e+01, 78441 iterations, 19.48 seconds (15.18 work units)
Total elapsed time = 41.08s (DegenMoves)
Total elapsed time = 46.19s (DegenMoves)

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

     0     0   57.00000    0  821   10.00000   57.00000   470%     -   50s

Explored 1 nodes (99321 simplex iterations) in 50.04 seconds (53.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 3 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.700000000000e+01, gap 470.0000%

Wrote result file './lp_solutions/grafo7202.42.sol'

