java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:59:47,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:59:47,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:59:47,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:59:47,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:59:47,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:59:47,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:59:47,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:59:47,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:59:47,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:59:47,661 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:59:47,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:59:47,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:59:47,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:59:47,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:59:47,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:59:47,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:59:47,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:59:47,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:59:47,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:59:47,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:59:47,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:59:47,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:59:47,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:59:47,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-04 21:59:47,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-04 21:59:47,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-04 21:59:47,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-04 21:59:47,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-04 21:59:47,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-04 21:59:47,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:59:47,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:59:47,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:59:47,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:59:47,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:59:47,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:59:47,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:59:47,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:59:47,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:59:47,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:59:47,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:59:47,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-08-04 21:59:47,702 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-04 21:59:47,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-04 21:59:47,704 INFO L136 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-08-04 21:59:47,704 INFO L138 SettingsManager]: * Show backtranslation warnings=false [2019-08-04 21:59:47,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-08-04 21:59:47,704 INFO L138 SettingsManager]: * User list type=DISABLED [2019-08-04 21:59:47,704 INFO L138 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-08-04 21:59:47,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-08-04 21:59:47,705 INFO L138 SettingsManager]: * Explicit value domain=true [2019-08-04 21:59:47,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-08-04 21:59:47,705 INFO L138 SettingsManager]: * Octagon Domain=false [2019-08-04 21:59:47,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-08-04 21:59:47,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-08-04 21:59:47,706 INFO L138 SettingsManager]: * Interval Domain=false [2019-08-04 21:59:47,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-04 21:59:47,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-04 21:59:47,707 INFO L138 SettingsManager]: * Use SBE=true [2019-08-04 21:59:47,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-04 21:59:47,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-04 21:59:47,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-04 21:59:47,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-04 21:59:47,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-04 21:59:47,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-04 21:59:47,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-04 21:59:47,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-04 21:59:47,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-04 21:59:47,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-04 21:59:47,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-04 21:59:47,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-04 21:59:47,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-04 21:59:47,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-04 21:59:47,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-04 21:59:47,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-04 21:59:47,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-04 21:59:47,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-04 21:59:47,711 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-08-04 21:59:47,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-04 21:59:47,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-04 21:59:47,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-04 21:59:47,712 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-08-04 21:59:47,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:59:47,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:59:47,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:59:47,782 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:59:47,782 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:59:47,783 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl [2019-08-04 21:59:47,783 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl' [2019-08-04 21:59:47,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:59:47,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:59:47,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:59:47,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:59:47,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:59:47,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,863 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-04 21:59:47,864 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-04 21:59:47,864 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-04 21:59:47,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:59:47,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:59:47,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:59:47,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:59:47,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... [2019-08-04 21:59:47,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:59:47,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:59:47,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:59:47,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:59:47,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:59:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-04 21:59:47,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2019-08-04 21:59:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure product [2019-08-04 21:59:47,969 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2019-08-04 21:59:48,363 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint productFINAL: assume true; [2019-08-04 21:59:48,365 INFO L275 CfgBuilder]: Using library mode [2019-08-04 21:59:48,365 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-04 21:59:48,366 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:59:48 BoogieIcfgContainer [2019-08-04 21:59:48,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:59:48,367 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-08-04 21:59:48,368 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-08-04 21:59:48,368 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-08-04 21:59:48,369 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:59:48" (1/1) ... [2019-08-04 21:59:48,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-08-04 21:59:48,586 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-08-04 21:59:48,606 INFO L272 AbstractInterpreter]: Visited 25 different actions 65 times. Merged at 20 different actions 24 times. Never widened. Performed 324 root evaluator evaluations with a maximum evaluation depth of 4. Performed 324 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 25 fixpoints after 12 different actions. Largest state had 0 variables. [2019-08-04 21:59:48,606 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-08-04 21:59:48,610 INFO L168 Benchmark]: Toolchain (without parser) took 782.15 ms. Allocated memory is still 134.7 MB. Free memory was 107.5 MB in the beginning and 84.0 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-08-04 21:59:48,611 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-04 21:59:48,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.13 ms. Allocated memory is still 134.7 MB. Free memory was 107.2 MB in the beginning and 105.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-04 21:59:48,614 INFO L168 Benchmark]: Boogie Preprocessor took 27.13 ms. Allocated memory is still 134.7 MB. Free memory was 105.4 MB in the beginning and 104.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-04 21:59:48,615 INFO L168 Benchmark]: RCFGBuilder took 472.08 ms. Allocated memory is still 134.7 MB. Free memory was 104.3 MB in the beginning and 92.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-08-04 21:59:48,616 INFO L168 Benchmark]: Abstract Interpretation took 239.17 ms. Allocated memory is still 134.7 MB. Free memory was 92.5 MB in the beginning and 84.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2019-08-04 21:59:48,621 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.13 ms. Allocated memory is still 134.7 MB. Free memory was 107.2 MB in the beginning and 105.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.13 ms. Allocated memory is still 134.7 MB. Free memory was 105.4 MB in the beginning and 104.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.08 ms. Allocated memory is still 134.7 MB. Free memory was 104.3 MB in the beginning and 92.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 239.17 ms. Allocated memory is still 134.7 MB. Free memory was 92.5 MB in the beginning and 84.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 37]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L15] havoc next; [L16] assume next >= 0; [L17] havoc workload; [L18] assume workload > 0; [L19] working0 := -1; [L20] working1 := -1; [L24] begin0 := next; [L25] next := next + workload; [L26] end0 := next; [L36] working0 := begin0; [L37] assert working0 != working1; - UnprovableResult [Line: 58]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L15] havoc next; [L16] assume next >= 0; [L17] havoc workload; [L18] assume workload > 0; [L19] working0 := -1; [L20] working1 := -1; [L29] begin1 := next; [L30] next := next + workload; [L31] end1 := next; [L57] working1 := begin1; [L58] assert working0 != working1; - UnprovableResult [Line: 69]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L15] havoc next; [L16] assume next >= 0; [L17] havoc workload; [L18] assume workload > 0; [L19] working0 := -1; [L20] working1 := -1; [L24] begin0 := next; [L25] next := next + workload; [L26] end0 := next; [L45] begin1 := next; [L46] next := next + workload; [L47] end1 := next; [L68] working0 := begin0; [L69] assert working0 != working1; - UnprovableResult [Line: 78]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L15] havoc next; [L16] assume next >= 0; [L17] havoc workload; [L18] assume workload > 0; [L19] working0 := -1; [L20] working1 := -1; [L24] begin0 := next; [L25] next := next + workload; [L26] end0 := next; [L45] begin1 := next; [L46] next := next + workload; [L47] end1 := next; [L77] working1 := begin1; [L78] assert working0 != working1; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...