Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/./OMCompiler/build/lib/omlibrary/ --ompython_omhome=/usr Buildings_6.0.0_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase12.conf.json
Using package Buildings with version 6.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 6.0.0/package.mo)
Using package Modelica with version 3.2.2 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Modelica 3.2.2/package.mo)
Using package Complex with version 3.2.2 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Complex 3.2.2.mo)
Using package ModelicaServices with version 3.2.2 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/ModelicaServices 3.2.2/package.mo)
Running command: translateModel(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase12,tolerance=1e-06,outputFormat="empty",numberOfIntervals=172800,variableFilter="",fileNamePrefix="Buildings_6.0.0_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase12")
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/ModelicaServices 3.2.2/package.mo): time 0.01073/0.01073, allocations: 221 kB / 15.17 MB, free: 5.93 MB / 13.93 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Complex 3.2.2.mo): time 0.001139/0.001139, allocations: 175.2 kB / 16.06 MB, free: 5.828 MB / 13.93 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Modelica 3.2.2/package.mo): time 3.839/3.839, allocations: 389.1 MB / 405.9 MB, free: 11.71 MB / 330.7 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 6.0.0/package.mo): time 3.828/3.828, allocations: 472.3 MB / 0.9018 GB, free: 9.215 MB / 0.5886 GB
Notification: Performance of FrontEnd - loaded program: time 0.0004947/0.0004948, allocations: 12 kB / 1.008 GB, free: 138.2 MB / 0.6042 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1239/0.1244, allocations: 98.73 MB / 1.104 GB, free: 42.04 MB / 0.6042 GB
Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase12): time 0.6747/0.7992, allocations: 139 MB / 1.24 GB, free: 6.293 MB / 0.6198 GB
Notification: Performance of NFInst.instExpressions: time 0.01029/0.8095, allocations: 6.129 MB / 1.246 GB, free: 1.977 MB / 0.6198 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001574/0.8111, allocations: 44.69 kB / 1.246 GB, free: 1.957 MB / 0.6198 GB
Notification: Performance of NFTyping.typeComponents: time 0.003245/0.8144, allocations: 2.408 MB / 1.248 GB, free: 1.668 MB / 0.6198 GB
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 6.0.0/Fluid/Sources/BaseClasses/PartialSource.mo:25:17-26:47:writable] Warning: 'each' used when modifying non-array element m_flow.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 6.0.0/Fluid/Sources/BaseClasses/PartialSource.mo:23:17-24:49:writable] Warning: 'each' used when modifying non-array element m_flow.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 6.0.0/Fluid/Sources/BaseClasses/PartialSource.mo:25:17-26:47:writable] Warning: 'each' used when modifying non-array element m_flow.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 6.0.0/Fluid/Sources/BaseClasses/PartialSource.mo:23:17-24:49:writable] Warning: 'each' used when modifying non-array element m_flow.
Notification: Performance of NFTyping.typeBindings: time 0.005182/0.8196, allocations: 2.149 MB / 1.25 GB, free: 0.9609 MB / 0.6198 GB
Notification: Performance of NFTyping.typeClassSections: time 0.004296/0.8239, allocations: 1.111 MB / 1.251 GB, free: 424 kB / 0.6198 GB
Notification: Performance of NFFlatten.flatten: time 0.008521/0.8325, allocations: 3.411 MB / 1.255 GB, free: 15.09 MB / 0.6355 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003511/0.836, allocations: 1.241 MB / 1.256 GB, free: 14.72 MB / 0.6355 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.003064/0.8391, allocations: 1.146 MB / 1.257 GB, free: 14.39 MB / 0.6355 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.004085/0.8433, allocations: 1.8 MB / 1.259 GB, free: 13.95 MB / 0.6355 GB
Notification: Performance of NFPackage.collectConstants: time 0.0003315/0.8436, allocations: 52.38 kB / 1.259 GB, free: 13.95 MB / 0.6355 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002896/0.8465, allocations: 0.4988 MB / 1.259 GB, free: 13.75 MB / 0.6355 GB
Notification: Performance of NFScalarize.scalarize: time 0.001083/0.8476, allocations: 0.6095 MB / 1.26 GB, free: 13.4 MB / 0.6355 GB
Notification: Performance of NFVerifyModel.verify: time 0.0007954/0.8485, allocations: 433.5 kB / 1.26 GB, free: 13.13 MB / 0.6355 GB
Notification: Performance of NFConvertDAE.convert: time 0.004485/0.853, allocations: 2.14 MB / 1.262 GB, free: 11.71 MB / 0.6355 GB
Notification: Performance of FrontEnd - DAE generated: time 7.724e-06/0.853, allocations: 1.312 kB / 1.262 GB, free: 11.71 MB / 0.6355 GB
Notification: Performance of FrontEnd: time 2.691e-06/0.853, allocations: 0 / 1.262 GB, free: 11.71 MB / 0.6355 GB
Notification: Performance of Transformations before backend: time 3.2e-05/0.8531, allocations: 0 / 1.262 GB, free: 11.71 MB / 0.6355 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 234
 * Number of variables: 234
Notification: Performance of Generate backend data structure: time 0.008142/0.8612, allocations: 2.805 MB / 1.265 GB, free: 9.5 MB / 0.6355 GB
Notification: Performance of prepare preOptimizeDAE: time 5.82e-05/0.8613, allocations: 12.28 kB / 1.265 GB, free: 9.496 MB / 0.6355 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001168/0.8625, allocations: 304.8 kB / 1.265 GB, free: 9.336 MB / 0.6355 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.00557/0.8681, allocations: 1.326 MB / 1.267 GB, free: 8.332 MB / 0.6355 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003148/0.8685, allocations: 115.5 kB / 1.267 GB, free: 8.266 MB / 0.6355 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002316/0.8687, allocations: 107 kB / 1.267 GB, free: 8.23 MB / 0.6355 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.00278/0.8715, allocations: 1.099 MB / 1.268 GB, free: 7.586 MB / 0.6355 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.97e-05/0.8716, allocations: 5.031 kB / 1.268 GB, free: 7.582 MB / 0.6355 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001347/0.8717, allocations: 36.91 kB / 1.268 GB, free: 7.555 MB / 0.6355 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.531e-05/0.8718, allocations: 21.91 kB / 1.268 GB, free: 7.555 MB / 0.6355 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002439/0.8742, allocations: 0.887 MB / 1.269 GB, free: 7.121 MB / 0.6355 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 0.009245/0.8835, allocations: 5.04 MB / 1.274 GB, free: 2.934 MB / 0.6355 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.002853/0.8864, allocations: 1.06 MB / 1.275 GB, free: 2.402 MB / 0.6355 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001253/0.8876, allocations: 0.5117 MB / 1.275 GB, free: 2.156 MB / 0.6355 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0006149/0.8883, allocations: 0.5101 MB / 1.276 GB, free: 1.57 MB / 0.6355 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001384/0.8897, allocations: 0.5483 MB / 1.276 GB, free: 1.246 MB / 0.6355 GB
Notification: Performance of pre-optimization done (n=91): time 5.274e-06/0.8897, allocations: 3.938 kB / 1.276 GB, free: 1.242 MB / 0.6355 GB
Notification: Performance of matching and sorting (n=91): time 0.006387/0.8961, allocations: 2.158 MB / 1.279 GB, free: 4 kB / 0.6355 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001001/0.8962, allocations: 65.8 kB / 1.279 GB, free: 15.94 MB / 0.6511 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006658/0.9029, allocations: 3.875 MB / 1.282 GB, free: 14.22 MB / 0.6511 GB
Notification: Performance of collectPreVariables (initialization): time 0.0002196/0.9032, allocations: 51.95 kB / 1.282 GB, free: 14.17 MB / 0.6511 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001465/0.9047, allocations: 1.151 MB / 1.284 GB, free: 13.18 MB / 0.6511 GB
Notification: Performance of collectInitialBindings (initialization): time 0.000449/0.9051, allocations: 293.2 kB / 1.284 GB, free: 12.93 MB / 0.6511 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 7.993e-05/0.9052, allocations: 24 kB / 1.284 GB, free: 12.91 MB / 0.6511 GB
Notification: Performance of setup shared object (initialization): time 0.0002128/0.9054, allocations: 352.8 kB / 1.284 GB, free: 12.57 MB / 0.6511 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001101/0.9066, allocations: 420.2 kB / 1.285 GB, free: 12.37 MB / 0.6511 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001266/0.9078, allocations: 0.5856 MB / 1.285 GB, free: 11.98 MB / 0.6511 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001312/0.9092, allocations: 0.6323 MB / 1.286 GB, free: 11.57 MB / 0.6511 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.973e-06/0.9092, allocations: 0 / 1.286 GB, free: 11.57 MB / 0.6511 GB
Notification: Performance of matching and sorting (n=149) (initialization): time 0.003863/0.9131, allocations: 1.706 MB / 1.287 GB, free: 10.62 MB / 0.6511 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0001447/0.9132, allocations: 166.5 kB / 1.288 GB, free: 10.44 MB / 0.6511 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.222e-05/0.9133, allocations: 5.312 kB / 1.288 GB, free: 10.44 MB / 0.6511 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0007568/0.914, allocations: 226.7 kB / 1.288 GB, free: 10.33 MB / 0.6511 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008372/0.9149, allocations: 188 kB / 1.288 GB, free: 10.29 MB / 0.6511 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006031/0.9209, allocations: 4.25 MB / 1.292 GB, free: 6.027 MB / 0.6511 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001364/0.9223, allocations: 154.9 kB / 1.292 GB, free: 5.875 MB / 0.6511 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001477/0.9225, allocations: 51.98 kB / 1.292 GB, free: 5.824 MB / 0.6511 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 18
 * Number of states: 0 ()
 * Number of discrete variables: 35 ($PRE.assEqu.nFai,assEqu.nFai,$whenCondition8,$whenCondition7,$PRE.intGai.nextTimeEvent,$whenCondition6,$PRE.reference.nextTimeEvent,$whenCondition5,$PRE.outdoorTemp.nextTimeEvent,$whenCondition4,$PRE.tableSolRadWindow.nextTimeEvent,$whenCondition3,$PRE.ventRate.nextTimeEvent,$whenCondition1,$whenCondition2,reference.nextTimeEvent,$PRE.reference.nextTimeEventScaled,reference.nextTimeEventScaled,$PRE.assEqu.satisfied,assEqu.satisfied,$PRE.mean.y,mean.y,intGai.nextTimeEvent,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEventScaled,outdoorTemp.nextTimeEvent,$PRE.outdoorTemp.nextTimeEventScaled,outdoorTemp.nextTimeEventScaled,tableSolRadWindow.nextTimeEvent,$PRE.tableSolRadWindow.nextTimeEventScaled,tableSolRadWindow.nextTimeEventScaled,greaterThreshold1.y,ventRate.nextTimeEvent,$PRE.ventRate.nextTimeEventScaled,ventRate.nextTimeEventScaled)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (111):
 * Single equations (assignments): 104
 * Array equations: 0
 * Algorithm blocks: 5
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 2 {(2,100.0%) 14,(1,100.0%) 3}
 * Non-linear torn systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.001476/0.924, allocations: 0.7307 MB / 1.293 GB, free: 5.086 MB / 0.6511 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003858/0.9244, allocations: 256.7 kB / 1.293 GB, free: 4.832 MB / 0.6511 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003656/0.9281, allocations: 1.463 MB / 1.295 GB, free: 3.344 MB / 0.6511 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.315e-05/0.9281, allocations: 15.94 kB / 1.295 GB, free: 3.328 MB / 0.6511 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 9.543e-06/0.9281, allocations: 4 kB / 1.295 GB, free: 3.324 MB / 0.6511 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002997/0.9311, allocations: 1.356 MB / 1.296 GB, free: 1.891 MB / 0.6511 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005908/0.9371, allocations: 2.826 MB / 1.299 GB, free: 14.99 MB / 0.6667 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.051e-05/0.9371, allocations: 0 / 1.299 GB, free: 14.99 MB / 0.6667 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006616/0.9378, allocations: 119.8 kB / 1.299 GB, free: 14.88 MB / 0.6667 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.00101/0.9388, allocations: 254.3 kB / 1.299 GB, free: 14.62 MB / 0.6667 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.099e-05/0.9389, allocations: 31.97 kB / 1.299 GB, free: 14.59 MB / 0.6667 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006515/0.9454, allocations: 4.796 MB / 1.304 GB, free: 9.512 MB / 0.6667 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.342e-06/0.9455, allocations: 0 / 1.304 GB, free: 9.512 MB / 0.6667 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004654/0.9501, allocations: 2.018 MB / 1.306 GB, free: 7.465 MB / 0.6667 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.000802/0.9509, allocations: 413.6 kB / 1.306 GB, free: 7.039 MB / 0.6667 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002454/0.9512, allocations: 20 kB / 1.306 GB, free: 7.02 MB / 0.6667 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008659/0.9521, allocations: 75.92 kB / 1.306 GB, free: 6.945 MB / 0.6667 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002385/0.9523, allocations: 88.86 kB / 1.306 GB, free: 6.855 MB / 0.6667 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001052/0.9525, allocations: 31.98 kB / 1.306 GB, free: 6.824 MB / 0.6667 GB
Notification: Performance of sorting global known variables: time 0.004211/0.9567, allocations: 2.799 MB / 1.309 GB, free: 4.023 MB / 0.6667 GB
Notification: Performance of sort global known variables: time 8.13e-07/0.9567, allocations: 0 / 1.309 GB, free: 4.023 MB / 0.6667 GB
Notification: Performance of remove unused functions: time 0.00192/0.9586, allocations: 499 kB / 1.31 GB, free: 3.535 MB / 0.6667 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 5 (thermalZoneTwoElements.volAir.dynBal.U,thermalZoneTwoElements.volAir.dynBal.m,thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,mean.x)
 * Number of discrete variables: 22 ($whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,intGai.nextTimeEvent,intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,outdoorTemp.nextTimeEvent,outdoorTemp.nextTimeEventScaled,tableSolRadWindow.nextTimeEvent,tableSolRadWindow.nextTimeEventScaled,greaterThreshold1.y,ventRate.nextTimeEvent,ventRate.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,mean.y)
 * Number of discrete states: 13 (intGai.nextTimeEvent,reference.nextTimeEvent,outdoorTemp.nextTimeEvent,tableSolRadWindow.nextTimeEvent,ventRate.nextTimeEvent,mean.x,ventRate.nextTimeEventScaled,tableSolRadWindow.nextTimeEventScaled,outdoorTemp.nextTimeEventScaled,reference.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,intGai.nextTimeEventScaled)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (73):
 * Single equations (assignments): 56
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 2
 * When equations: 12
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 2 {(2,100.0%) 14,(1,100.0%) 3}
 * Non-linear torn systems: 1 {1 2}
Notification: Performance of Backend phase and start with SimCode phase: time 0.005245/0.9639, allocations: 1.307 MB / 1.311 GB, free: 2.766 MB / 0.6667 GB
Notification: Performance of simCode: created initialization part: time 0.005946/0.9699, allocations: 1.699 MB / 1.313 GB, free: 0.9805 MB / 0.6667 GB
Notification: Performance of simCode: created event and clocks part: time 1.009e-05/0.9699, allocations: 3.984 kB / 1.313 GB, free: 0.9766 MB / 0.6667 GB
Notification: Performance of simCode: created simulation system equations: time 0.003033/0.973, allocations: 0.8138 MB / 1.313 GB, free: 144 kB / 0.6667 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004238/0.9772, allocations: 460.5 kB / 1.314 GB, free: 15.69 MB / 0.6823 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0104/0.9876, allocations: 5.687 MB / 1.319 GB, free: 9.973 MB / 0.6823 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002227/0.9899, allocations: 1.803 MB / 1.321 GB, free: 8.141 MB / 0.6823 GB
Notification: Performance of simCode: alias equations: time 0.001107/0.991, allocations: 232.2 kB / 1.321 GB, free: 7.914 MB / 0.6823 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003113/0.9914, allocations: 91.41 kB / 1.321 GB, free: 7.824 MB / 0.6823 GB
Notification: Performance of SimCode: time 1.506e-06/0.9914, allocations: 0 / 1.321 GB, free: 7.824 MB / 0.6823 GB
Notification: Performance of Templates: time 0.05914/1.051, allocations: 21.74 MB / 1.343 GB, free: 2.461 MB / 0.698 GB