java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-2989841 [2019-08-09 16:24:17,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-09 16:24:17,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-09 16:24:17,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-09 16:24:17,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-09 16:24:17,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-09 16:24:17,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-09 16:24:17,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-09 16:24:17,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-09 16:24:17,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-09 16:24:17,101 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-09 16:24:17,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-09 16:24:17,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-09 16:24:17,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-09 16:24:17,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-09 16:24:17,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-09 16:24:17,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-09 16:24:17,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-09 16:24:17,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-09 16:24:17,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-09 16:24:17,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-09 16:24:17,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-09 16:24:17,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-09 16:24:17,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-09 16:24:17,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-09 16:24:17,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-09 16:24:17,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-09 16:24:17,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-09 16:24:17,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-09 16:24:17,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-09 16:24:17,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-09 16:24:17,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-09 16:24:17,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-09 16:24:17,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-09 16:24:17,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-09 16:24:17,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-09 16:24:17,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-09 16:24:17,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-09 16:24:17,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-09 16:24:17,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-09 16:24:17,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-09 16:24:17,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-08-09 16:24:17,167 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-09 16:24:17,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-09 16:24:17,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-09 16:24:17,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-09 16:24:17,171 INFO L138 SettingsManager]: * Use SBE=true [2019-08-09 16:24:17,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-09 16:24:17,171 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-09 16:24:17,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-09 16:24:17,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-09 16:24:17,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-09 16:24:17,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-09 16:24:17,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-09 16:24:17,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-09 16:24:17,174 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-09 16:24:17,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-09 16:24:17,174 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-09 16:24:17,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-09 16:24:17,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-09 16:24:17,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-09 16:24:17,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-09 16:24:17,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-09 16:24:17,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-09 16:24:17,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-09 16:24:17,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-09 16:24:17,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-09 16:24:17,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-09 16:24:17,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-09 16:24:17,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-09 16:24:17,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-09 16:24:17,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-09 16:24:17,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-09 16:24:17,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-09 16:24:17,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-09 16:24:17,242 INFO L275 PluginConnector]: CDTParser initialized [2019-08-09 16:24:17,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2019-08-09 16:24:17,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa488df6/d2d79e01e3b2481f922273691fef2061/FLAG6e8d74a6c [2019-08-09 16:24:17,761 INFO L306 CDTParser]: Found 1 translation units. [2019-08-09 16:24:17,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2019-08-09 16:24:17,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa488df6/d2d79e01e3b2481f922273691fef2061/FLAG6e8d74a6c [2019-08-09 16:24:18,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa488df6/d2d79e01e3b2481f922273691fef2061 [2019-08-09 16:24:18,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-09 16:24:18,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-09 16:24:18,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-09 16:24:18,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-09 16:24:18,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-09 16:24:18,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40484efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18, skipping insertion in model container [2019-08-09 16:24:18,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,181 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-09 16:24:18,205 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-09 16:24:18,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-09 16:24:18,472 INFO L188 MainTranslator]: Completed pre-run [2019-08-09 16:24:18,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-09 16:24:18,540 INFO L192 MainTranslator]: Completed translation [2019-08-09 16:24:18,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18 WrapperNode [2019-08-09 16:24:18,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-09 16:24:18,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-09 16:24:18,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-09 16:24:18,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-09 16:24:18,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (1/1) ... [2019-08-09 16:24:18,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-09 16:24:18,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-09 16:24:18,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-09 16:24:18,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-09 16:24:18,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:24:18" (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 [2019-08-09 16:24:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-09 16:24:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-09 16:24:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2019-08-09 16:24:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2019-08-09 16:24:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-09 16:24:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-09 16:24:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-08-09 16:24:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2019-08-09 16:24:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-08-09 16:24:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2019-08-09 16:24:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-08-09 16:24:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-09 16:24:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-09 16:24:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-09 16:24:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-09 16:24:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-09 16:24:19,071 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-09 16:24:19,072 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-08-09 16:24:19,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.08 04:24:19 BoogieIcfgContainer [2019-08-09 16:24:19,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-09 16:24:19,074 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-09 16:24:19,074 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-09 16:24:19,074 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-09 16:24:19,075 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.08 04:24:19" (1/1) ... [2019-08-09 16:24:19,508 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2019-08-09 16:24:20,030 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2019-08-09 16:24:20,426 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-09 16:24:20,433 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-09 16:24:20,435 INFO L168 Benchmark]: Toolchain (without parser) took 2273.09 ms. Allocated memory was 136.8 MB in the beginning and 215.0 MB in the end (delta: 78.1 MB). Free memory was 83.3 MB in the beginning and 125.2 MB in the end (delta: -41.9 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2019-08-09 16:24:20,436 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 101.7 MB in the beginning and 101.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-09 16:24:20,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.08 ms. Allocated memory is still 136.8 MB. Free memory was 82.8 MB in the beginning and 72.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-08-09 16:24:20,438 INFO L168 Benchmark]: Boogie Preprocessor took 144.60 ms. Allocated memory was 136.8 MB in the beginning and 197.1 MB in the end (delta: 60.3 MB). Free memory was 72.8 MB in the beginning and 173.9 MB in the end (delta: -101.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-08-09 16:24:20,439 INFO L168 Benchmark]: RCFGBuilder took 385.38 ms. Allocated memory is still 197.1 MB. Free memory was 173.9 MB in the beginning and 156.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2019-08-09 16:24:20,440 INFO L168 Benchmark]: Symbolic Interpretation took 1360.00 ms. Allocated memory was 197.1 MB in the beginning and 215.0 MB in the end (delta: 17.8 MB). Free memory was 156.9 MB in the beginning and 125.2 MB in the end (delta: 31.7 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2019-08-09 16:24:20,444 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Interpreter reached this location of interest. Location might be reachable. Predicate is 134#(and (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (or (not (= main_~ret~1 main_~ret2~0)) (not (= main_~ret~1 main_~ret5~0)))). Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 101.7 MB in the beginning and 101.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.08 ms. Allocated memory is still 136.8 MB. Free memory was 82.8 MB in the beginning and 72.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.60 ms. Allocated memory was 136.8 MB in the beginning and 197.1 MB in the end (delta: 60.3 MB). Free memory was 72.8 MB in the beginning and 173.9 MB in the end (delta: -101.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.38 ms. Allocated memory is still 197.1 MB. Free memory was 173.9 MB in the beginning and 156.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 1360.00 ms. Allocated memory was 197.1 MB in the beginning and 215.0 MB in the end (delta: 17.8 MB). Free memory was 156.9 MB in the beginning and 125.2 MB in the end (delta: 31.7 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...