java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain -i ../../../trunk/examples/svcomp/ldv-regression/oomInt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 04:42:08,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 04:42:08,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 04:42:08,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 04:42:08,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 04:42:08,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 04:42:08,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 04:42:08,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 04:42:08,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 04:42:08,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 04:42:08,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 04:42:08,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 04:42:08,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 04:42:08,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 04:42:08,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 04:42:08,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 04:42:08,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 04:42:08,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 04:42:08,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 04:42:08,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 04:42:08,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 04:42:08,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 04:42:08,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 04:42:08,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 04:42:08,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 04:42:08,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 04:42:08,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 04:42:08,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 04:42:08,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 04:42:08,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 04:42:08,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 04:42:08,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 04:42:08,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 04:42:08,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 04:42:08,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 04:42:08,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 04:42:08,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 04:42:08,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 04:42:08,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 04:42:08,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 04:42:08,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 04:42:08,934 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 [2019-10-15 04:42:08,948 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 04:42:08,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 04:42:08,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 04:42:08,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 04:42:08,952 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 04:42:08,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 04:42:08,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 04:42:08,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 04:42:08,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 04:42:08,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 04:42:08,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 04:42:08,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 04:42:08,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 04:42:08,955 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 04:42:08,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 04:42:08,956 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 04:42:08,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 04:42:08,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 04:42:08,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 04:42:08,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 04:42:08,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 04:42:08,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 04:42:08,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 04:42:08,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 04:42:08,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 04:42:08,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 04:42:08,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 04:42:08,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 04:42:08,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain [2019-10-15 04:42:09,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 04:42:09,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 04:42:09,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 04:42:09,269 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 04:42:09,270 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 04:42:09,271 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.i [2019-10-15 04:42:09,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b201e5ce7/921e157435964241ab0910c380f6a236/FLAGf57c06b44 [2019-10-15 04:42:09,793 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 04:42:09,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.i [2019-10-15 04:42:09,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b201e5ce7/921e157435964241ab0910c380f6a236/FLAGf57c06b44 [2019-10-15 04:42:10,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b201e5ce7/921e157435964241ab0910c380f6a236 [2019-10-15 04:42:10,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 04:42:10,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 04:42:10,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 04:42:10,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 04:42:10,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 04:42:10,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e3dfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10, skipping insertion in model container [2019-10-15 04:42:10,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,226 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 04:42:10,243 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 04:42:10,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 04:42:10,426 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 04:42:10,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 04:42:10,455 INFO L192 MainTranslator]: Completed translation [2019-10-15 04:42:10,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10 WrapperNode [2019-10-15 04:42:10,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 04:42:10,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 04:42:10,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 04:42:10,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 04:42:10,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 04:42:10,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 04:42:10,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 04:42:10,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 04:42:10,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:10" (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 [2019-10-15 04:42:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 04:42:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 04:42:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 04:42:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2019-10-15 04:42:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2019-10-15 04:42:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 04:42:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 04:42:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 04:42:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2019-10-15 04:42:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2019-10-15 04:42:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 04:42:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 04:42:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 04:42:10,783 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 04:42:10,784 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 04:42:10,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:10 BoogieIcfgContainer [2019-10-15 04:42:10,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 04:42:10,786 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-10-15 04:42:10,786 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-10-15 04:42:10,786 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-10-15 04:42:10,787 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:10" (1/1) ... [2019-10-15 04:42:10,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 04:42:10,989 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 04:42:11,009 INFO L272 AbstractInterpreter]: Visited 26 different actions 26 times. Never merged. Never widened. Performed 20 root evaluator evaluations with a maximum evaluation depth of 5. Performed 20 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 5 variables. [2019-10-15 04:42:11,010 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-10-15 04:42:11,013 INFO L168 Benchmark]: Toolchain (without parser) took 807.78 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 161.2 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 04:42:11,014 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 04:42:11,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.41 ms. Allocated memory is still 144.2 MB. Free memory was 101.2 MB in the beginning and 92.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-15 04:42:11,017 INFO L168 Benchmark]: Boogie Preprocessor took 113.17 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 179.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-15 04:42:11,018 INFO L168 Benchmark]: RCFGBuilder took 215.92 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 168.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-10-15 04:42:11,018 INFO L168 Benchmark]: Abstract Interpretation took 223.80 ms. Allocated memory is still 200.8 MB. Free memory was 168.2 MB in the beginning and 161.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2019-10-15 04:42:11,023 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.41 ms. Allocated memory is still 144.2 MB. Free memory was 101.2 MB in the beginning and 92.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.17 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 179.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 215.92 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 168.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 223.80 ms. Allocated memory is still 200.8 MB. Free memory was 168.2 MB in the beginning and 161.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L26] int p = 0; [L35] CALL firstFunction() [L29] CALL, EXPR abs_int(-3) [L18] COND TRUE i < 0 [L22] return -i; [L29] RET, EXPR abs_int(-3) [L29] p = abs_int(-3) [L30] CALL __VERIFIER_assert(p >= 0) [L8] COND TRUE i == 0 [L10] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...