Running command: translateModel(Buildings.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger")
Notification: Performance of loadModel(Buildings): time 3.755/3.755, allocations: 402 MB / 416.6 MB, free: 10.18 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.777e-05/3.783e-05, allocations: 7.984 kB / 0.501 GB, free: 8.23 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1998/0.1999, allocations: 92.67 MB / 0.5915 GB, free: 11.38 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger): time 0.5622/0.7622, allocations: 22.99 MB / 0.6139 GB, free: 2.301 MB / 0.4948 GB
Notification: Performance of NFInst.instExpressions: time 0.0131/0.7753, allocations: 5.853 MB / 0.6196 GB, free: 14.3 MB / 0.5105 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001622/0.777, allocations: 39.03 kB / 0.6197 GB, free: 14.29 MB / 0.5105 GB
Notification: Performance of NFTyping.typeComponents: time 0.001911/0.779, allocations: 366.9 kB / 0.62 GB, free: 14.07 MB / 0.5105 GB
Notification: Performance of NFTyping.typeBindings: time 0.004466/0.7835, allocations: 0.8297 MB / 0.6208 GB, free: 13.48 MB / 0.5105 GB
Notification: Performance of NFTyping.typeClassSections: time 0.004839/0.7884, allocations: 0.7652 MB / 0.6216 GB, free: 13.11 MB / 0.5105 GB
Notification: Performance of NFFlatten.flatten: time 0.006462/0.7948, allocations: 2.072 MB / 0.6236 GB, free: 11.86 MB / 0.5105 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.004393/0.7993, allocations: 1.203 MB / 0.6248 GB, free: 11.46 MB / 0.5105 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.004949/0.8043, allocations: 1.044 MB / 0.6258 GB, free: 11.02 MB / 0.5105 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.005029/0.8094, allocations: 0.86 MB / 0.6266 GB, free: 10.7 MB / 0.5105 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.004236/0.8137, allocations: 0.7729 MB / 0.6274 GB, free: 10.52 MB / 0.5105 GB
Notification: Performance of NFPackage.collectConstants: time 0.0009062/0.8147, allocations: 85.5 kB / 0.6275 GB, free: 10.51 MB / 0.5105 GB
Notification: Performance of NFScalarize.scalarize: time 0.0007467/0.8154, allocations: 327 kB / 0.6278 GB, free: 10.36 MB / 0.5105 GB
Notification: Performance of NFVerifyModel.verify: time 0.001273/0.8167, allocations: 199.6 kB / 0.628 GB, free: 10.36 MB / 0.5105 GB
Notification: Performance of NFConvertDAE.convert: time 0.008648/0.8254, allocations: 2.772 MB / 0.6307 GB, free: 9.793 MB / 0.5105 GB
Notification: Performance of FrontEnd - DAE generated: time 1.243e-05/0.8255, allocations: 4 kB / 0.6307 GB, free: 9.789 MB / 0.5105 GB
Notification: Performance of FrontEnd: time 3.787e-06/0.8255, allocations: 3.938 kB / 0.6307 GB, free: 9.785 MB / 0.5105 GB
Notification: Performance of Transformations before backend: time 0.0001642/0.8257, allocations: 0 / 0.6307 GB, free: 9.785 MB / 0.5105 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 369
 * Number of variables: 369
Notification: Performance of Generate backend data structure: time 0.01095/0.8367, allocations: 1.891 MB / 0.6325 GB, free: 8.734 MB / 0.5105 GB
Notification: Performance of prepare preOptimizeDAE: time 5.901e-05/0.8367, allocations: 7.75 kB / 0.6325 GB, free: 8.734 MB / 0.5105 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002134/0.8389, allocations: 244.8 kB / 0.6328 GB, free: 8.625 MB / 0.5105 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005567/0.8445, allocations: 1.566 MB / 0.6343 GB, free: 7.797 MB / 0.5105 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001663/0.8447, allocations: 114 kB / 0.6344 GB, free: 7.746 MB / 0.5105 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.000634/0.8454, allocations: 166.7 kB / 0.6346 GB, free: 7.688 MB / 0.5105 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.007297/0.8527, allocations: 2.131 MB / 0.6366 GB, free: 6.566 MB / 0.5105 GB
Notification: Performance of preOpt findStateOrder (simulation): time 7.725e-05/0.8528, allocations: 10.31 kB / 0.6367 GB, free: 6.559 MB / 0.5105 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002658/0.8531, allocations: 59.47 kB / 0.6367 GB, free: 6.516 MB / 0.5105 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.313e-05/0.8532, allocations: 47.55 kB / 0.6368 GB, free: 6.508 MB / 0.5105 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00679/0.86, allocations: 1.882 MB / 0.6386 GB, free: 5.543 MB / 0.5105 GB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0239/0.8839, allocations: 8.851 MB / 0.6472 GB, free: 14.54 MB / 0.5261 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.004386/0.8884, allocations: 1.451 MB / 0.6487 GB, free: 13.74 MB / 0.5261 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.01243/0.9009, allocations: 3.757 MB / 0.6523 GB, free: 10.67 MB / 0.5261 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.322e-05/0.901, allocations: 45.06 kB / 0.6524 GB, free: 10.62 MB / 0.5261 GB
Notification: Performance of pre-optimization done (n=99): time 4.719e-06/0.901, allocations: 0 / 0.6524 GB, free: 10.62 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=105): time 0.01561/0.9166, allocations: 4.265 MB / 0.6565 GB, free: 8.086 MB / 0.5261 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 7.703e-05/0.9168, allocations: 117.4 kB / 0.6566 GB, free: 7.957 MB / 0.5261 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004099/0.9209, allocations: 1.475 MB / 0.6581 GB, free: 7.164 MB / 0.5261 GB
Notification: Performance of collectPreVariables (initialization): time 0.000434/0.9214, allocations: 46.64 kB / 0.6581 GB, free: 7.117 MB / 0.5261 GB
Notification: Performance of collectInitialEqns (initialization): time 0.00121/0.9226, allocations: 0.7661 MB / 0.6589 GB, free: 6.445 MB / 0.5261 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0007854/0.9234, allocations: 371.7 kB / 0.6592 GB, free: 6.125 MB / 0.5261 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001896/0.9236, allocations: 34.06 kB / 0.6593 GB, free: 6.098 MB / 0.5261 GB
Notification: Performance of setup shared object (initialization): time 0.0002288/0.9239, allocations: 373.6 kB / 0.6596 GB, free: 5.746 MB / 0.5261 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.002247/0.9261, allocations: 0.7527 MB / 0.6604 GB, free: 5.355 MB / 0.5261 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.002744/0.9289, allocations: 1.148 MB / 0.6615 GB, free: 4.473 MB / 0.5261 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.002783/0.9317, allocations: 0.9683 MB / 0.6624 GB, free: 3.953 MB / 0.5261 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.485e-05/0.9318, allocations: 5.812 kB / 0.6624 GB, free: 3.953 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=196) (initialization): time 0.006931/0.9387, allocations: 2.164 MB / 0.6645 GB, free: 2.719 MB / 0.5261 GB
Notification: Performance of prepare postOptimizeDAE: time 0.001773/0.9406, allocations: 4.321 MB / 0.6688 GB, free: 14.11 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.534e-05/0.9407, allocations: 12 kB / 0.6688 GB, free: 14.1 MB / 0.5417 GB
Notification: Performance of postOpt tearingSystem (initialization): time 5.174e-05/0.9407, allocations: 24 kB / 0.6688 GB, free: 14.07 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003421/0.9442, allocations: 395.3 kB / 0.6692 GB, free: 13.69 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.896e-05/0.9443, allocations: 19.94 kB / 0.6692 GB, free: 13.67 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002943/0.9472, allocations: 131.6 kB / 0.6693 GB, free: 13.54 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004599/0.9477, allocations: 67.98 kB / 0.6694 GB, free: 13.47 MB / 0.5417 GB
Notification: Performance of prepare postOptimizeDAE: time 1.739e-05/0.9477, allocations: 4 kB / 0.6694 GB, free: 13.47 MB / 0.5417 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.007234/0.955, allocations: 1.986 MB / 0.6713 GB, free: 11.48 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.823e-05/0.9551, allocations: 12 kB / 0.6713 GB, free: 11.47 MB / 0.5417 GB
Notification: Performance of postOpt tearingSystem (initialization): time 5.28e-05/0.9552, allocations: 20 kB / 0.6714 GB, free: 11.45 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004077/0.9593, allocations: 392.1 kB / 0.6717 GB, free: 11.07 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.925e-05/0.9594, allocations: 23.94 kB / 0.6718 GB, free: 11.04 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003472/0.9629, allocations: 119.7 kB / 0.6719 GB, free: 10.93 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004678/0.9634, allocations: 79.94 kB / 0.6719 GB, free: 10.85 MB / 0.5417 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 49
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (196):
 * Single equations (assignments): 196
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.002818/0.9662, allocations: 0.6884 MB / 0.6726 GB, free: 10.15 MB / 0.5417 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.007586/0.9738, allocations: 154.1 kB / 0.6728 GB, free: 9.996 MB / 0.5417 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01319/0.9871, allocations: 1.633 MB / 0.6744 GB, free: 8.344 MB / 0.5417 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01244/0.9996, allocations: 1.626 MB / 0.6759 GB, free: 6.621 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.579e-05/0.9996, allocations: 0 / 0.6759 GB, free: 6.621 MB / 0.5417 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.002302/1.002, allocations: 430.9 kB / 0.6764 GB, free: 6.18 MB / 0.5417 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007918/1.003, allocations: 27.98 kB / 0.6764 GB, free: 6.152 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.008775/1.012, allocations: 83.77 kB / 0.6765 GB, free: 6.07 MB / 0.5417 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003531/1.012, allocations: 68.86 kB / 0.6765 GB, free: 6.004 MB / 0.5417 GB
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
Notification: Performance of <failed> postOpt createDAEmodeBDAE (simulation): time 0.01174/1.024, allocations: 1.268 MB / 0.6778 GB, free: 4.723 MB / 0.5417 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.