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/eca-rers2012/Problem17_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f3d0b09 [2019-08-08 11:03:09,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-08 11:03:09,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-08 11:03:09,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-08 11:03:09,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-08 11:03:09,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-08 11:03:09,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-08 11:03:09,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-08 11:03:09,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-08 11:03:09,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-08 11:03:09,241 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-08 11:03:09,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-08 11:03:09,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-08 11:03:09,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-08 11:03:09,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-08 11:03:09,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-08 11:03:09,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-08 11:03:09,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-08 11:03:09,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-08 11:03:09,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-08 11:03:09,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-08 11:03:09,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-08 11:03:09,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-08 11:03:09,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-08 11:03:09,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-08 11:03:09,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-08 11:03:09,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-08 11:03:09,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-08 11:03:09,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-08 11:03:09,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-08 11:03:09,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-08 11:03:09,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-08 11:03:09,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-08 11:03:09,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-08 11:03:09,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-08 11:03:09,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-08 11:03:09,269 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 11:03:09,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-08 11:03:09,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-08 11:03:09,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-08 11:03:09,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-08 11:03:09,293 INFO L138 SettingsManager]: * Use SBE=true [2019-08-08 11:03:09,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-08 11:03:09,294 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-08 11:03:09,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-08 11:03:09,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-08 11:03:09,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-08 11:03:09,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-08 11:03:09,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-08 11:03:09,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-08 11:03:09,295 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-08 11:03:09,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-08 11:03:09,297 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-08 11:03:09,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-08 11:03:09,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-08 11:03:09,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-08 11:03:09,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-08 11:03:09,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-08 11:03:09,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-08 11:03:09,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-08 11:03:09,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-08 11:03:09,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-08 11:03:09,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-08 11:03:09,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-08 11:03:09,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-08 11:03:09,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-08 11:03:09,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-08 11:03:09,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-08 11:03:09,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-08 11:03:09,357 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-08 11:03:09,357 INFO L275 PluginConnector]: CDTParser initialized [2019-08-08 11:03:09,358 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2019-08-08 11:03:09,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a12ee3bf/f46483bf585b4fbeb962b593d5aeb56d/FLAG9ed10a76f [2019-08-08 11:03:10,141 INFO L306 CDTParser]: Found 1 translation units. [2019-08-08 11:03:10,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2019-08-08 11:03:10,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a12ee3bf/f46483bf585b4fbeb962b593d5aeb56d/FLAG9ed10a76f [2019-08-08 11:03:10,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a12ee3bf/f46483bf585b4fbeb962b593d5aeb56d [2019-08-08 11:03:10,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-08 11:03:10,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-08 11:03:10,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-08 11:03:10,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-08 11:03:10,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-08 11:03:10,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 11:03:10" (1/1) ... [2019-08-08 11:03:10,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2518654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:10, skipping insertion in model container [2019-08-08 11:03:10,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 11:03:10" (1/1) ... [2019-08-08 11:03:10,291 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-08 11:03:10,405 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-08 11:03:11,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-08 11:03:11,522 INFO L188 MainTranslator]: Completed pre-run [2019-08-08 11:03:12,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-08 11:03:12,107 INFO L192 MainTranslator]: Completed translation [2019-08-08 11:03:12,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12 WrapperNode [2019-08-08 11:03:12,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-08 11:03:12,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-08 11:03:12,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-08 11:03:12,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-08 11:03:12,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (1/1) ... [2019-08-08 11:03:12,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-08 11:03:12,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-08 11:03:12,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-08 11:03:12,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-08 11:03:12,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:03:12" (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 [2019-08-08 11:03:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-08 11:03:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-08 11:03:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-08-08 11:03:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-08-08 11:03:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-08 11:03:12,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-08-08 11:03:12,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-08-08 11:03:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-08 11:03:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-08-08 11:03:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-08-08 11:03:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-08 11:03:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-08 11:03:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-08 11:03:20,858 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-08 11:03:20,859 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-08 11:03:20,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 11:03:20 BoogieIcfgContainer [2019-08-08 11:03:20,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-08 11:03:20,864 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-08 11:03:20,865 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-08 11:03:20,866 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-08 11:03:20,867 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 11:03:20" (1/1) ... [2019-08-08 11:03:20,877 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-08 11:03:20,880 INFO L155 IcfgInterpreter]: Building call graph [2019-08-08 11:03:20,896 INFO L160 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-08 11:03:20,902 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-08 11:03:20,903 INFO L185 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 [2019-08-08 11:03:20,953 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 43 [2019-08-08 11:03:43,199 INFO L185 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 89 [2019-08-08 11:03:43,350 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-08 11:03:43,350 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-08 11:03:43,353 INFO L179 IcfgInterpreter]: Location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION has predicate 673008#(and (<= ~a28~0 300) (= ~a24~0 1) (< 0 (+ ~a26~0 68)) (< 134 ~a28~0) (<= ~a21~0 127) (<= ~a26~0 124) (<= (+ ~a14~0 182) 0)) [2019-08-08 11:03:43,354 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-08 11:03:43,362 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-08 11:03:43,366 INFO L168 Benchmark]: Toolchain (without parser) took 33092.92 ms. Allocated memory was 132.1 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 78.4 MB in the beginning and 642.8 MB in the end (delta: -564.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2019-08-08 11:03:43,366 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 132.1 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-08 11:03:43,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1833.66 ms. Allocated memory was 132.1 MB in the beginning and 234.9 MB in the end (delta: 102.8 MB). Free memory was 78.0 MB in the beginning and 149.5 MB in the end (delta: -71.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2019-08-08 11:03:43,369 INFO L168 Benchmark]: Boogie Preprocessor took 215.98 ms. Allocated memory is still 234.9 MB. Free memory was 149.5 MB in the beginning and 129.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-08-08 11:03:43,370 INFO L168 Benchmark]: RCFGBuilder took 8538.94 ms. Allocated memory was 234.9 MB in the beginning and 361.2 MB in the end (delta: 126.4 MB). Free memory was 129.7 MB in the beginning and 255.6 MB in the end (delta: -125.9 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. [2019-08-08 11:03:43,371 INFO L168 Benchmark]: Symbolic Interpretation took 22498.19 ms. Allocated memory was 361.2 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 255.6 MB in the beginning and 642.8 MB in the end (delta: -387.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2019-08-08 11:03:43,375 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 122]: 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 0.25 ms. Allocated memory is still 132.1 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1833.66 ms. Allocated memory was 132.1 MB in the beginning and 234.9 MB in the end (delta: 102.8 MB). Free memory was 78.0 MB in the beginning and 149.5 MB in the end (delta: -71.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.98 ms. Allocated memory is still 234.9 MB. Free memory was 149.5 MB in the beginning and 129.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8538.94 ms. Allocated memory was 234.9 MB in the beginning and 361.2 MB in the end (delta: 126.4 MB). Free memory was 129.7 MB in the beginning and 255.6 MB in the end (delta: -125.9 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 22498.19 ms. Allocated memory was 361.2 MB in the beginning and 1.7 GB in the end (delta: 1.3 GB). Free memory was 255.6 MB in the beginning and 642.8 MB in the end (delta: -387.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...