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<div>Dear Sir,</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>After I ran my model on Couenne. A message showed that</div><div><br></div><div>-----------------------------------------------------</div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div>Error in an AMPL evaluation. Run with "halt_on_ampl_error yes" to see details.</div><div>Exception of type: TOO_FEW_DOF in file "E:\stefan\nbBuildDir\Couenne\releases-0.3.2\Ipopt\src\Interfaces\IpIpoptApplication.cpp" at line 788:</div><div> Exception message: status != TOO_FEW_DEGREES_OF_FREEDOM evaluated false: Too few degrees of freedom (rethrown)!</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::IterationCount</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::CPUTime</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::IterationCount</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::CPUTime</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::IterationCount</div><div>Exception of type: TOO_FEW_DOF in file "E:\stefan\nbBuildDir\Couenne\releases-0.3.2\Ipopt\src\Interfaces\IpIpoptApplication.cpp" at line 788:</div><div> Exception message: status != TOO_FEW_DEGREES_OF_FREEDOM evaluated false: Too few degrees of freedom (rethrown)!</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::IterationCount</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::CPUTime</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::IterationCount</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::CPUTime</div><div>TODO: No statistics available from Ipopt in Bonmin::IpoptSolver::IterationCount</div><div>Cbc0006I The LP relaxation is infeasible or too expensive</div><div>Cbc0031I 4 added rows had average density of 2</div><div>Cbc0013I At root node, 4 cuts changed objective from 30 to 30 in 2 pa!
sses</di
v><div>Cbc0014I Cut generator 0 (Couenne convexifier cuts) - 4 row cuts average 2.0 elements, 34 column cuts (38 active)</div><div>Cbc0001I Search completed - best objective 1e+050, took 4 iterations and 0 nodes (24.80 seconds)</div><div>Cbc0035I Maximum depth 0, 0 variables fixed on reduced cost</div><div> Couenne convexifier cuts was tried 2 times and created 38 cuts of which 4 were active after adding rounds of cuts</div><div></div><div> <span class="Apple-tab-span" style="white-space:pre"> </span>"Finished"</div><div><br></div><div>couenne: Infeasible problem<span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div>-----------------------------------------------------<span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>After I read options section in couenne: a user’s manual. </div><div>In 6.2(Linearization option) it said that...<span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div>– lp_solver (clp): the Linear Programming solver used to find lower bounds.</div><div>By default, CLP is used, but the user can also specify cplex to use the</div><div>Cplex commercial software. In the latter case, the configure script has to</div><div>be (re-)run with the following options:</div><div>--with-cplex-lib="/your/path/to/libcplex.a -lpthread"</div><div>--with-cplex-incdir=/your/path/to/include/ilcplex</div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>My computer platform is Window XP and also AMPL and CPLEX Version.11.1.0 installed.</div><div>Could you please advise me?</div><div><br></div><div>Best Reg!
ards, Ot
e</div> </body>
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