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/bitvector/soft_float_1-3.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-2989841 [2019-08-09 16:26:10,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-09 16:26:10,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-09 16:26:10,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-09 16:26:10,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-09 16:26:10,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-09 16:26:10,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-09 16:26:10,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-09 16:26:10,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-09 16:26:10,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-09 16:26:10,547 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-09 16:26:10,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-09 16:26:10,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-09 16:26:10,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-09 16:26:10,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-09 16:26:10,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-09 16:26:10,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-09 16:26:10,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-09 16:26:10,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-09 16:26:10,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-09 16:26:10,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-09 16:26:10,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-09 16:26:10,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-09 16:26:10,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-09 16:26:10,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-09 16:26:10,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-09 16:26:10,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-09 16:26:10,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-09 16:26:10,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-09 16:26:10,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-09 16:26:10,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-09 16:26:10,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-09 16:26:10,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-09 16:26:10,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-09 16:26:10,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-09 16:26:10,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-09 16:26:10,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-09 16:26:10,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-09 16:26:10,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-09 16:26:10,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-09 16:26:10,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-09 16:26:10,601 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 16:26:10,624 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-09 16:26:10,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-09 16:26:10,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-09 16:26:10,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-09 16:26:10,628 INFO L138 SettingsManager]: * Use SBE=true [2019-08-09 16:26:10,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-09 16:26:10,629 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-09 16:26:10,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-09 16:26:10,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-09 16:26:10,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-09 16:26:10,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-09 16:26:10,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-09 16:26:10,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-09 16:26:10,632 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-09 16:26:10,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-09 16:26:10,632 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-09 16:26:10,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-09 16:26:10,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-09 16:26:10,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-09 16:26:10,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-09 16:26:10,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-09 16:26:10,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-09 16:26:10,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-09 16:26:10,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-09 16:26:10,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-09 16:26:10,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-09 16:26:10,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-09 16:26:10,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-09 16:26:10,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-09 16:26:10,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-09 16:26:10,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-09 16:26:10,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-09 16:26:10,717 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-09 16:26:10,717 INFO L275 PluginConnector]: CDTParser initialized [2019-08-09 16:26:10,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3.c.cil.c [2019-08-09 16:26:10,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87659242e/cc0329206b374941b409c4bb3a921953/FLAG7578f3b97 [2019-08-09 16:26:11,270 INFO L306 CDTParser]: Found 1 translation units. [2019-08-09 16:26:11,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-3.c.cil.c [2019-08-09 16:26:11,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87659242e/cc0329206b374941b409c4bb3a921953/FLAG7578f3b97 [2019-08-09 16:26:11,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87659242e/cc0329206b374941b409c4bb3a921953 [2019-08-09 16:26:11,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-09 16:26:11,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-09 16:26:11,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-09 16:26:11,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-09 16:26:11,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-09 16:26:11,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.08 04:26:11" (1/1) ... [2019-08-09 16:26:11,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f480c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:11, skipping insertion in model container [2019-08-09 16:26:11,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.08 04:26:11" (1/1) ... [2019-08-09 16:26:11,631 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-09 16:26:11,675 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-09 16:26:11,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-09 16:26:11,910 INFO L188 MainTranslator]: Completed pre-run [2019-08-09 16:26:12,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-09 16:26:12,075 INFO L192 MainTranslator]: Completed translation [2019-08-09 16:26:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12 WrapperNode [2019-08-09 16:26:12,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-09 16:26:12,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-09 16:26:12,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-09 16:26:12,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-09 16:26:12,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (1/1) ... [2019-08-09 16:26:12,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-09 16:26:12,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-09 16:26:12,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-09 16:26:12,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-09 16:26:12,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:26:12" (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 16:26:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-09 16:26:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-09 16:26:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-08-09 16:26:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2019-08-09 16:26:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2019-08-09 16:26:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2019-08-09 16:26:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-09 16:26:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-09 16:26:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-08-09 16:26:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-08-09 16:26:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-09 16:26:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2019-08-09 16:26:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2019-08-09 16:26:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2019-08-09 16:26:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-09 16:26:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-09 16:26:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-09 16:26:12,727 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-09 16:26:12,727 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-08-09 16:26:12,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.08 04:26:12 BoogieIcfgContainer [2019-08-09 16:26:12,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-09 16:26:12,730 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-09 16:26:12,730 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-09 16:26:12,730 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-09 16:26:12,731 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.08 04:26:12" (1/1) ... [2019-08-09 16:27:00,942 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-09 16:27:00,948 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-09 16:27:00,951 INFO L168 Benchmark]: Toolchain (without parser) took 49337.12 ms. Allocated memory was 136.8 MB in the beginning and 215.5 MB in the end (delta: 78.6 MB). Free memory was 84.7 MB in the beginning and 175.8 MB in the end (delta: -91.1 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2019-08-09 16:27:00,951 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 136.8 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-09 16:27:00,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.80 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 84.3 MB in the beginning and 172.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-08-09 16:27:00,953 INFO L168 Benchmark]: Boogie Preprocessor took 45.76 ms. Allocated memory is still 197.7 MB. Free memory was 172.6 MB in the beginning and 170.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-09 16:27:00,954 INFO L168 Benchmark]: RCFGBuilder took 606.82 ms. Allocated memory is still 197.7 MB. Free memory was 170.0 MB in the beginning and 142.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-08-09 16:27:00,955 INFO L168 Benchmark]: Symbolic Interpretation took 48218.80 ms. Allocated memory was 197.7 MB in the beginning and 215.5 MB in the end (delta: 17.8 MB). Free memory was 142.3 MB in the beginning and 175.8 MB in the end (delta: -33.5 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2019-08-09 16:27:00,960 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 7]: 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 542#(or (and (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0)) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= 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 0.53 ms. Allocated memory is still 136.8 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.80 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 84.3 MB in the beginning and 172.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.76 ms. Allocated memory is still 197.7 MB. Free memory was 172.6 MB in the beginning and 170.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 606.82 ms. Allocated memory is still 197.7 MB. Free memory was 170.0 MB in the beginning and 142.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 48218.80 ms. Allocated memory was 197.7 MB in the beginning and 215.5 MB in the end (delta: 17.8 MB). Free memory was 142.3 MB in the beginning and 175.8 MB in the end (delta: -33.5 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...