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_sentinel.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f3d0b09 [2019-08-08 09:45:37,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-08 09:45:37,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-08 09:45:37,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-08 09:45:37,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-08 09:45:37,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-08 09:45:37,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-08 09:45:37,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-08 09:45:37,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-08 09:45:37,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-08 09:45:37,835 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-08 09:45:37,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-08 09:45:37,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-08 09:45:37,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-08 09:45:37,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-08 09:45:37,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-08 09:45:37,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-08 09:45:37,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-08 09:45:37,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-08 09:45:37,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-08 09:45:37,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-08 09:45:37,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-08 09:45:37,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-08 09:45:37,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-08 09:45:37,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-08 09:45:37,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-08 09:45:37,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-08 09:45:37,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-08 09:45:37,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-08 09:45:37,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-08 09:45:37,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-08 09:45:37,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-08 09:45:37,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-08 09:45:37,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-08 09:45:37,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-08 09:45:37,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-08 09:45:37,860 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 [2019-08-08 09:45:37,874 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-08 09:45:37,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-08 09:45:37,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-08 09:45:37,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-08 09:45:37,876 INFO L138 SettingsManager]: * Use SBE=true [2019-08-08 09:45:37,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-08 09:45:37,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-08 09:45:37,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-08 09:45:37,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-08 09:45:37,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-08 09:45:37,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-08 09:45:37,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-08 09:45:37,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-08 09:45:37,877 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-08 09:45:37,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-08 09:45:37,878 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-08 09:45:37,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-08 09:45:37,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-08 09:45:37,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-08 09:45:37,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-08 09:45:37,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-08 09:45:37,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-08 09:45:37,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-08 09:45:37,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-08 09:45:37,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-08 09:45:37,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-08 09:45:37,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-08 09:45:37,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-08 09:45:37,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-08 09:45:37,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-08 09:45:37,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-08 09:45:37,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-08 09:45:37,931 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-08 09:45:37,932 INFO L275 PluginConnector]: CDTParser initialized [2019-08-08 09:45:37,932 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2019-08-08 09:45:38,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a593fd4c5/be1adb402b9c4bdb8865ab4a72fac0b2/FLAGe6670bdf7 [2019-08-08 09:45:38,458 INFO L306 CDTParser]: Found 1 translation units. [2019-08-08 09:45:38,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2019-08-08 09:45:38,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a593fd4c5/be1adb402b9c4bdb8865ab4a72fac0b2/FLAGe6670bdf7 [2019-08-08 09:45:38,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a593fd4c5/be1adb402b9c4bdb8865ab4a72fac0b2 [2019-08-08 09:45:38,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-08 09:45:38,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-08 09:45:38,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-08 09:45:38,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-08 09:45:38,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-08 09:45:38,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 09:45:38" (1/1) ... [2019-08-08 09:45:38,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4234773b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:38, skipping insertion in model container [2019-08-08 09:45:38,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 09:45:38" (1/1) ... [2019-08-08 09:45:38,870 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-08 09:45:38,889 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-08 09:45:39,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-08 09:45:39,061 INFO L188 MainTranslator]: Completed pre-run [2019-08-08 09:45:39,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-08 09:45:39,106 INFO L192 MainTranslator]: Completed translation [2019-08-08 09:45:39,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39 WrapperNode [2019-08-08 09:45:39,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-08 09:45:39,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-08 09:45:39,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-08 09:45:39,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-08 09:45:39,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-08 09:45:39,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-08 09:45:39,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-08 09:45:39,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-08 09:45:39,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:45:39" (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 [2019-08-08 09:45:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-08 09:45:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-08 09:45:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-08 09:45:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-08 09:45:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-08-08 09:45:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-08 09:45:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-08 09:45:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-08 09:45:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-08-08 09:45:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-08-08 09:45:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-08 09:45:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-08 09:45:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-08 09:45:39,673 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-08 09:45:39,674 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-08 09:45:39,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 09:45:39 BoogieIcfgContainer [2019-08-08 09:45:39,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-08 09:45:39,677 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-08 09:45:39,678 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-08 09:45:39,679 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-08 09:45:39,680 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 09:45:39" (1/1) ... [2019-08-08 09:45:39,697 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-08 09:45:39,699 INFO L155 IcfgInterpreter]: Building call graph [2019-08-08 09:45:39,711 INFO L160 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-08 09:45:39,720 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-08 09:45:39,721 INFO L185 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 [2019-08-08 09:45:39,781 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 25 [2019-08-08 09:45:39,936 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-08 09:45:39,937 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-08 09:45:39,939 INFO L179 IcfgInterpreter]: Location mainErr0ASSERT_VIOLATIONERROR_FUNCTION has predicate 67#(and (= main_~__tmp_1~0 (ite (<= main_~main__i~0 main_~main__pos~0) 1 0)) (= main_~__VERIFIER_assert__cond~0 0) (= (select (select |#memory_int| |main_~#main__a~0.base|) (+ (* 4 main_~main__i~0) |main_~#main__a~0.offset|)) main_~main__marker~0) (not (= (select (select |#memory_int| |main_~#main__a~0.base|) (+ (* 4 main_~main__i~0) |main_~#main__a~0.offset| (- 4))) main_~main__marker~0)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0)) [2019-08-08 09:45:39,940 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-08 09:45:39,947 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-08 09:45:39,950 INFO L168 Benchmark]: Toolchain (without parser) took 1098.80 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 87.9 MB in the beginning and 153.5 MB in the end (delta: -65.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-08 09:45:39,951 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-08 09:45:39,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.08 ms. Allocated memory is still 140.5 MB. Free memory was 87.9 MB in the beginning and 77.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-08-08 09:45:39,953 INFO L168 Benchmark]: Boogie Preprocessor took 124.21 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 77.7 MB in the beginning and 177.1 MB in the end (delta: -99.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-08-08 09:45:39,954 INFO L168 Benchmark]: RCFGBuilder took 444.12 ms. Allocated memory is still 200.3 MB. Free memory was 177.1 MB in the beginning and 163.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-08-08 09:45:39,954 INFO L168 Benchmark]: Symbolic Interpretation took 270.27 ms. Allocated memory is still 200.3 MB. Free memory was 163.0 MB in the beginning and 153.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-08-08 09:45:39,959 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 41]: 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.. 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 140.5 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.08 ms. Allocated memory is still 140.5 MB. Free memory was 87.9 MB in the beginning and 77.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.21 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 77.7 MB in the beginning and 177.1 MB in the end (delta: -99.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.12 ms. Allocated memory is still 200.3 MB. Free memory was 177.1 MB in the beginning and 163.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 270.27 ms. Allocated memory is still 200.3 MB. Free memory was 163.0 MB in the beginning and 153.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...