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/array-examples/standard_init3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-55cd5f5 [2019-08-14 10:35:22,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-14 10:35:22,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-14 10:35:22,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-14 10:35:22,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-14 10:35:22,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-14 10:35:22,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-14 10:35:22,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-14 10:35:22,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-14 10:35:22,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-14 10:35:22,029 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-14 10:35:22,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-14 10:35:22,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-14 10:35:22,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-14 10:35:22,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-14 10:35:22,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-14 10:35:22,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-14 10:35:22,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-14 10:35:22,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-14 10:35:22,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-14 10:35:22,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-14 10:35:22,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-14 10:35:22,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-14 10:35:22,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-14 10:35:22,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-14 10:35:22,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-14 10:35:22,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-14 10:35:22,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-14 10:35:22,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-14 10:35:22,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-14 10:35:22,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-14 10:35:22,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-14 10:35:22,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-14 10:35:22,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-14 10:35:22,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-14 10:35:22,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-14 10:35:22,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-14 10:35:22,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-14 10:35:22,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-14 10:35:22,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-14 10:35:22,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-14 10:35:22,061 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 [2019-08-14 10:35:22,075 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-14 10:35:22,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-14 10:35:22,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-14 10:35:22,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-14 10:35:22,077 INFO L138 SettingsManager]: * Use SBE=true [2019-08-14 10:35:22,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-14 10:35:22,077 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-14 10:35:22,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-14 10:35:22,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-14 10:35:22,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-14 10:35:22,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-14 10:35:22,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-14 10:35:22,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-14 10:35:22,079 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-14 10:35:22,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-14 10:35:22,079 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-14 10:35:22,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-14 10:35:22,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-14 10:35:22,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-14 10:35:22,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-14 10:35:22,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-14 10:35:22,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-14 10:35:22,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-14 10:35:22,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-14 10:35:22,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-14 10:35:22,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-14 10:35:22,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-14 10:35:22,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-14 10:35:22,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-14 10:35:22,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-14 10:35:22,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-14 10:35:22,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-14 10:35:22,130 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-14 10:35:22,130 INFO L275 PluginConnector]: CDTParser initialized [2019-08-14 10:35:22,131 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2019-08-14 10:35:22,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466a4af5d/606be933723b4e59bb1dafdca26b2ea6/FLAGaa661893d [2019-08-14 10:35:22,651 INFO L306 CDTParser]: Found 1 translation units. [2019-08-14 10:35:22,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2019-08-14 10:35:22,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466a4af5d/606be933723b4e59bb1dafdca26b2ea6/FLAGaa661893d [2019-08-14 10:35:22,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466a4af5d/606be933723b4e59bb1dafdca26b2ea6 [2019-08-14 10:35:22,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-14 10:35:22,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-14 10:35:22,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-14 10:35:22,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-14 10:35:22,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-14 10:35:22,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 10:35:22" (1/1) ... [2019-08-14 10:35:22,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eac6da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:22, skipping insertion in model container [2019-08-14 10:35:22,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 10:35:22" (1/1) ... [2019-08-14 10:35:23,002 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-14 10:35:23,019 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-14 10:35:23,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-14 10:35:23,277 INFO L188 MainTranslator]: Completed pre-run [2019-08-14 10:35:23,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-14 10:35:23,331 INFO L192 MainTranslator]: Completed translation [2019-08-14 10:35:23,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23 WrapperNode [2019-08-14 10:35:23,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-14 10:35:23,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-14 10:35:23,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-14 10:35:23,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-14 10:35:23,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:23,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-14 10:35:23,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-14 10:35:23,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-14 10:35:23,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-14 10:35:23,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 10:35:23" (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 [2019-08-14 10:35:23,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-14 10:35:23,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-14 10:35:23,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-08-14 10:35:23,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-14 10:35:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-14 10:35:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-14 10:35:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-14 10:35:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-14 10:35:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-08-14 10:35:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-08-14 10:35:23,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-14 10:35:23,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-14 10:35:23,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-14 10:35:23,750 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-14 10:35:23,751 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-08-14 10:35:23,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 10:35:23 BoogieIcfgContainer [2019-08-14 10:35:23,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-14 10:35:23,752 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-14 10:35:23,752 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-14 10:35:23,753 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-14 10:35:23,754 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 10:35:23" (1/1) ... [2019-08-14 10:35:24,604 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-14 10:35:24,607 INFO L168 Benchmark]: Toolchain (without parser) took 1622.12 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 87.1 MB in the beginning and 107.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2019-08-14 10:35:24,608 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 130.5 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-14 10:35:24,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.74 ms. Allocated memory is still 130.5 MB. Free memory was 86.9 MB in the beginning and 76.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-08-14 10:35:24,611 INFO L168 Benchmark]: Boogie Preprocessor took 145.12 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 76.7 MB in the beginning and 174.4 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-08-14 10:35:24,611 INFO L168 Benchmark]: RCFGBuilder took 274.39 ms. Allocated memory is still 198.2 MB. Free memory was 174.4 MB in the beginning and 160.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-08-14 10:35:24,613 INFO L168 Benchmark]: Symbolic Interpretation took 852.85 ms. Allocated memory is still 198.2 MB. Free memory was 160.0 MB in the beginning and 107.3 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2019-08-14 10:35:24,624 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 168#(and (exists ((v_main_~x~0_BEFORE_CALL_1 Int) (|v_main_~#a~0.offset_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (< v_main_~x~0_BEFORE_CALL_1 100000) (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) (+ (* 4 v_main_~x~0_BEFORE_CALL_1) |v_main_~#a~0.offset_BEFORE_CALL_1|)) 43)) (and (= |__VERIFIER_assert_#in~cond| 0) (< v_main_~x~0_BEFORE_CALL_1 100000) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) (+ (* 4 v_main_~x~0_BEFORE_CALL_1) |v_main_~#a~0.offset_BEFORE_CALL_1|)) 43))))) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)). Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 130.5 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.74 ms. Allocated memory is still 130.5 MB. Free memory was 86.9 MB in the beginning and 76.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.12 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 76.7 MB in the beginning and 174.4 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.39 ms. Allocated memory is still 198.2 MB. Free memory was 174.4 MB in the beginning and 160.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 852.85 ms. Allocated memory is still 198.2 MB. Free memory was 160.0 MB in the beginning and 107.3 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...