
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:46:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6863.40.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/grafo6863.40.lp
Reading time = 0.69 seconds
: 371835 rows, 2944 columns, 1118513 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 371835 rows, 2944 columns and 1118513 nonzeros
Model fingerprint: 0x5f3632a5
Variable types: 57 continuous, 2887 integer (2887 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 -0.0000000
Presolve removed 155970 rows and 27 columns
Presolve time: 3.68s
Presolved: 215865 rows, 2917 columns, 651210 nonzeros
Variable types: 0 continuous, 2917 integer (2860 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2905 rows, 218770 columns, 654127 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    2133    2.1505061e+02   0.000000e+00   2.509357e+06      5s
   24598    6.0811847e+01   0.000000e+00   2.537950e+06     10s
   39328    4.9966871e+01   0.000000e+00   1.921258e+05     15s
   53321    4.9880185e+01   0.000000e+00   8.384239e+04     20s
   66567    4.9841925e+01   0.000000e+00   7.280353e+04     25s
   80464    4.9815428e+01   0.000000e+00   3.569802e+04     30s
   93440    4.9803069e+01   0.000000e+00   1.526104e+04     35s
  106390    4.9794827e+01   0.000000e+00   7.685962e+03     40s
  120265    4.9789186e+01   0.000000e+00   1.221608e+04     45s

Root relaxation: time limit, 133110 iterations, 45.96 seconds (27.58 work units)

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

     0     0          -    0         7.00000  375.00000  5257%     -   50s

Explored 1 nodes (133110 simplex iterations) in 50.04 seconds (30.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 3.750000000000e+02, gap 5257.1429%

Wrote result file './lp_solutions/grafo6863.40.sol'

