Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.1-master/package.mo", uses=false) Using package Chemical with version 1.4.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.1-master/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: translateModel(Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO") translateModel(Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001067/0.001067, allocations: 107.8 kB / 15.99 MB, free: 6.367 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0011/0.0011, allocations: 189.2 kB / 16.91 MB, free: 6.195 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.333/1.333, allocations: 222.9 MB / 240.6 MB, free: 13.72 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.1-master/package.mo): time 0.09511/0.09511, allocations: 15.3 MB / 306 MB, free: 15.45 MB / 254.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001336/0.001336, allocations: 64.97 kB / 370.5 MB, free: 50.35 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.09438/0.09575, allocations: 53.61 MB / 424.1 MB, free: 14.35 MB / 302.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.1-master/package.mo:4740:7-4740:66:writable] Warning: An inner declaration for outer component system could not be found and was automatically generated. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.1-master/package.mo:4740:7-4740:66:writable] Notification: The diagnostics message for the missing inner is: Your model is using an outer "system" component but an inner "system" component is not defined. For simulation drag Modelica.Fluid.System into your model to specify system properties. Notification: Performance of NFInst.instantiate(Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO): time 0.05218/0.148, allocations: 48.2 MB / 472.3 MB, free: 14.17 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.2906/0.4386, allocations: 85.63 MB / 0.5448 GB, free: 15.09 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.006245/0.4449, allocations: 124.2 kB / 0.545 GB, free: 15.09 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.006295/0.4512, allocations: 1.741 MB / 0.5467 GB, free: 15.04 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.02011/0.4713, allocations: 6.309 MB / 0.5528 GB, free: 12.75 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.03117/0.5025, allocations: 10.96 MB / 0.5635 GB, free: 6.641 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.03118/0.5337, allocations: 31.02 MB / 0.5938 GB, free: 10.7 MB / 414.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.03298/0.5668, allocations: 26.17 MB / 0.6194 GB, free: 1.602 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0307/0.5975, allocations: 21.73 MB / 0.6406 GB, free: 12.14 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.03141/0.6289, allocations: 19.25 MB / 0.6594 GB, free: 9.406 MB / 478.1 MB Notification: Performance of NFPackage.collectConstants: time 0.01433/0.6433, allocations: 3.594 MB / 0.6629 GB, free: 5.812 MB / 478.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.04136/0.6847, allocations: 12.91 MB / 0.6755 GB, free: 8.996 MB / 494.1 MB Notification: Performance of NFScalarize.scalarize: time 0.01555/0.7003, allocations: 8.244 MB / 0.6835 GB, free: 0.9609 MB / 494.1 MB Notification: Performance of NFVerifyModel.verify: time 0.02886/0.7292, allocations: 14.22 MB / 0.6974 GB, free: 2.926 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.4834/1.213, allocations: 39.23 MB / 0.7358 GB, free: 87.55 MB / 0.4982 GB Notification: Performance of FrontEnd - DAE generated: time 1.155e-05/1.213, allocations: 3.875 kB / 0.7358 GB, free: 87.55 MB / 0.4982 GB Notification: Performance of FrontEnd: time 2.104e-06/1.213, allocations: 0 / 0.7358 GB, free: 87.55 MB / 0.4982 GB Notification: Performance of Transformations before backend: time 0.001555/1.214, allocations: 0 / 0.7358 GB, free: 87.55 MB / 0.4982 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 4405 * Number of variables: 4405 Notification: Performance of Generate backend data structure: time 0.1138/1.328, allocations: 28.86 MB / 0.7639 GB, free: 76.82 MB / 0.4982 GB Notification: Performance of prepare preOptimizeDAE: time 4.515e-05/1.328, allocations: 7.75 kB / 0.7639 GB, free: 76.82 MB / 0.4982 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0317/1.36, allocations: 4.527 MB / 0.7684 GB, free: 74.83 MB / 0.4982 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.03259/1.392, allocations: 13.68 MB / 0.7817 GB, free: 62.89 MB / 0.4982 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.002352/1.395, allocations: 2.536 MB / 0.7842 GB, free: 60.09 MB / 0.4982 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.014/1.409, allocations: 1.774 MB / 0.7859 GB, free: 58.31 MB / 0.4982 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.1087/1.518, allocations: 40.44 MB / 0.8254 GB, free: 17.64 MB / 0.4982 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0009621/1.519, allocations: 11.64 kB / 0.8254 GB, free: 17.64 MB / 0.4982 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.01436/1.533, allocations: 0.6835 MB / 0.8261 GB, free: 16.96 MB / 0.4982 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000302/1.533, allocations: 420 kB / 0.8265 GB, free: 16.55 MB / 0.4982 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.1158/1.649, allocations: 54.47 MB / 0.8797 GB, free: 10.09 MB / 0.545 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 0.5917/2.241, allocations: 149 MB / 1.025 GB, free: 118.4 MB / 0.5607 GB Notification: Performance of preOpt comSubExp (simulation): time 1.076/3.317, allocations: 351.6 MB / 1.369 GB, free: 2.133 MB / 0.5607 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.3647/3.682, allocations: 23.06 MB / 1.391 GB, free: 200.6 MB / 0.5607 GB Notification: Performance of preOpt evalFunc (simulation): time 0.2051/3.887, allocations: 102.1 MB / 1.491 GB, free: 118.3 MB / 0.5607 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001234/3.887, allocations: 152.9 kB / 1.491 GB, free: 118.2 MB / 0.5607 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.03049/3.918, allocations: 5.26 MB / 1.496 GB, free: 113 MB / 0.5607 GB Notification: Performance of pre-optimization done (n=1160): time 8.723e-05/3.918, allocations: 0 / 1.496 GB, free: 113 MB / 0.5607 GB Notification: Performance of matching and sorting (n=1312): time 1.04/4.958, allocations: 149.6 MB / 1.642 GB, free: 160.5 MB / 0.5607 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001058/4.958, allocations: 194.5 kB / 1.642 GB, free: 160.3 MB / 0.5607 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01918/4.977, allocations: 11.97 MB / 1.654 GB, free: 148.4 MB / 0.5607 GB Notification: Performance of collectPreVariables (initialization): time 0.006143/4.983, allocations: 241.7 kB / 1.654 GB, free: 148.2 MB / 0.5607 GB Notification: Performance of collectInitialEqns (initialization): time 0.00776/4.991, allocations: 8.038 MB / 1.662 GB, free: 140.1 MB / 0.5607 GB Notification: Performance of collectInitialBindings (initialization): time 0.009786/5.001, allocations: 4.543 MB / 1.667 GB, free: 135.6 MB / 0.5607 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.02008/5.021, allocations: 3.801 MB / 1.67 GB, free: 131.8 MB / 0.5607 GB Notification: Performance of setup shared object (initialization): time 4.892e-05/5.021, allocations: 301.1 kB / 1.671 GB, free: 131.5 MB / 0.5607 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.02482/5.046, allocations: 13.86 MB / 1.684 GB, free: 117.6 MB / 0.5607 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.02895/5.075, allocations: 19.32 MB / 1.703 GB, free: 95.88 MB / 0.5607 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0567/5.132, allocations: 34.69 MB / 1.737 GB, free: 58.75 MB / 0.5607 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0002129/5.132, allocations: 52 kB / 1.737 GB, free: 58.7 MB / 0.5607 GB Notification: Performance of matching and sorting (n=2196) (initialization): time 0.7431/5.875, allocations: 93.15 MB / 1.828 GB, free: 155.7 MB / 0.5607 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001679/5.875, allocations: 76 kB / 1.828 GB, free: 155.6 MB / 0.5607 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0003734/5.876, allocations: 176 kB / 1.828 GB, free: 155.4 MB / 0.5607 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.06603/5.942, allocations: 25.94 MB / 1.853 GB, free: 129.6 MB / 0.5607 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.02046/5.962, allocations: 4.336 MB / 1.858 GB, free: 125.5 MB / 0.5607 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.4995/6.462, allocations: 109 MB / 1.964 GB, free: 160.5 MB / 0.5607 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.02381/6.486, allocations: 1.334 MB / 1.965 GB, free: 160.5 MB / 0.5607 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.006855/6.493, allocations: 1.091 MB / 1.967 GB, free: 160.5 MB / 0.5607 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 782 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (2138): * Single equations (assignments): 2135 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,3,100.0%), (41,12,73.3%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.01991/6.512, allocations: 6.211 MB / 1.973 GB, free: 160.3 MB / 0.5607 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.008196/6.521, allocations: 1.229 MB / 1.974 GB, free: 160.3 MB / 0.5607 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.3171/6.838, allocations: 57.57 MB / 2.03 GB, free: 147.2 MB / 0.5607 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0001682/6.838, allocations: 144.4 kB / 2.03 GB, free: 147.2 MB / 0.5607 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.0001463/6.838, allocations: 22.62 kB / 2.03 GB, free: 147.2 MB / 0.5607 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0004438/6.839, allocations: 71.72 kB / 2.03 GB, free: 147.2 MB / 0.5607 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.3623/7.201, allocations: 86.2 MB / 2.114 GB, free: 63.46 MB / 0.5607 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 0.0001402/7.201, allocations: 7.938 kB / 2.114 GB, free: 63.45 MB / 0.5607 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01709/7.218, allocations: 2.821 MB / 2.117 GB, free: 60.62 MB / 0.5607 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.03638/7.255, allocations: 14.34 MB / 2.131 GB, free: 46.42 MB / 0.5607 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.004824/7.259, allocations: 0.5463 MB / 2.132 GB, free: 45.88 MB / 0.5607 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.3988/7.658, allocations: 56.52 MB / 2.187 GB, free: 161.6 MB / 0.5607 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.712e-06/7.658, allocations: 10.19 kB / 2.187 GB, free: 161.6 MB / 0.5607 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.3255/7.984, allocations: 74.66 MB / 2.26 GB, free: 117.6 MB / 0.5607 GB Notification: Performance of postOpt removeConstants (simulation): time 0.01406/7.998, allocations: 3.881 MB / 2.264 GB, free: 113.8 MB / 0.5607 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.007772/8.006, allocations: 341.9 kB / 2.264 GB, free: 113.5 MB / 0.5607 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.01821/8.024, allocations: 0.9147 MB / 2.265 GB, free: 112.6 MB / 0.5607 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.009274/8.033, allocations: 1.809 MB / 2.267 GB, free: 110.8 MB / 0.5607 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.004292/8.038, allocations: 0.5392 MB / 2.267 GB, free: 110.2 MB / 0.5607 GB Notification: Performance of sorting global known variables: time 0.01451/8.052, allocations: 8.234 MB / 2.275 GB, free: 102.1 MB / 0.5607 GB Notification: Performance of sort global known variables: time 5.31e-07/8.052, allocations: 0 / 2.275 GB, free: 102.1 MB / 0.5607 GB Notification: Performance of remove unused functions: time 0.04314/8.095, allocations: 7.808 MB / 2.283 GB, free: 94.67 MB / 0.5607 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 69 (solution.temperature,O2_free.logn,H2O.logn,relaxed.OxyHm[1].logn,relaxed.OxyHm[2].logn,relaxed.OxyHm[3].logn,relaxed.OxyHm[4].logn,relaxed.DeoxyHm[1].logn,relaxed.DeoxyHm[2].logn,relaxed.DeoxyHm[3].logn,relaxed.DeoxyHm[4].logn,relaxed.HmAH[1].logn,relaxed.HmAH[2].logn,relaxed.HmAH[3].logn,relaxed.HmAH[4].logn,relaxed.HmA[1].logn,relaxed.HmA[2].logn,relaxed.HmA[3].logn,relaxed.HmA[4].logn,relaxed.HmNH3[1].logn,relaxed.HmNH3[2].logn,relaxed.HmNH3[3].logn,relaxed.HmNH3[4].logn,relaxed.HmNH2[1].logn,relaxed.HmNH2[2].logn,relaxed.HmNH2[3].logn,relaxed.HmNH2[4].logn,relaxed.HmNHCOO[1].logn,relaxed.HmNHCOO[2].logn,relaxed.HmNHCOO[3].logn,relaxed.HmNHCOO[4].logn,relaxed.COHm[1].logn,relaxed.COHm[2].logn,relaxed.COHm[3].logn,relaxed.COHm[4].logn,tensed.OxyHm[1].logn,tensed.OxyHm[2].logn,tensed.OxyHm[3].logn,tensed.OxyHm[4].logn,tensed.DeoxyHm[1].logn,tensed.DeoxyHm[2].logn,tensed.DeoxyHm[3].logn,tensed.DeoxyHm[4].logn,tensed.HmAH[1].logn,tensed.HmAH[2].logn,tensed.HmAH[3].logn,tensed.HmAH[4].logn,tensed.HmA[1].logn,tensed.HmA[2].logn,tensed.HmA[3].logn,tensed.HmA[4].logn,tensed.HmNH3[1].logn,tensed.HmNH3[2].logn,tensed.HmNH3[3].logn,tensed.HmNH3[4].logn,tensed.HmNH2[1].logn,tensed.HmNH2[2].logn,tensed.HmNH2[3].logn,tensed.HmNH2[4].logn,tensed.HmNHCOO[1].logn,tensed.HmNHCOO[2].logn,tensed.HmNHCOO[3].logn,tensed.HmNHCOO[4].logn,tensed.COHm[1].logn,tensed.COHm[2].logn,tensed.COHm[3].logn,tensed.COHm[4].logn,CO2_free.logn,CO_free.logn) * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (1436): * Single equations (assignments): 1433 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,3,100.0%), (41,12,73.3%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.01403/8.109, allocations: 4.193 MB / 2.287 GB, free: 91.48 MB / 0.5607 GB Notification: Performance of simCode: created initialization part: time 0.6115/8.721, allocations: 142.2 MB / 2.426 GB, free: 140.4 MB / 0.5607 GB Notification: Performance of simCode: created event and clocks part: time 9.989e-06/8.721, allocations: 0 / 2.426 GB, free: 140.4 MB / 0.5607 GB Notification: Performance of simCode: created simulation system equations: time 0.04572/8.767, allocations: 17.58 MB / 2.443 GB, free: 125.7 MB / 0.5607 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.02651/8.793, allocations: 2.887 MB / 2.446 GB, free: 123.6 MB / 0.5607 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1126/8.906, allocations: 51.64 MB / 2.496 GB, free: 78.11 MB / 0.5607 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.02103/8.927, allocations: 11.05 MB / 2.507 GB, free: 69.75 MB / 0.5607 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.01243/8.94, allocations: 1.844 MB / 2.509 GB, free: 67.92 MB / 0.5607 GB Notification: Performance of SimCode: time 1.723e-06/8.94, allocations: 0 / 2.509 GB, free: 67.92 MB / 0.5607 GB Notification: Performance of Templates: time 1.647/10.59, allocations: 0.5964 GB / 3.105 GB, free: 95.34 MB / 0.5919 GB make -j1 -f Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.makefile (rm -f Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.pipe ; mkfifo Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.pipe ; head -c 1048576 < Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.pipe >> ../files/Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.sim & ./Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO -abortSlowSimulation -alarm=480 -lv LOG_STATS > Chemical_Chemical.Examples.Hemoglobin.HemoglobinMultipleAllosteryCO.pipe 2>&1)