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/Problem16_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f3d0b09 [2019-08-08 10:59:32,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-08 10:59:32,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-08 10:59:32,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-08 10:59:32,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-08 10:59:33,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-08 10:59:33,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-08 10:59:33,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-08 10:59:33,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-08 10:59:33,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-08 10:59:33,007 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-08 10:59:33,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-08 10:59:33,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-08 10:59:33,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-08 10:59:33,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-08 10:59:33,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-08 10:59:33,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-08 10:59:33,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-08 10:59:33,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-08 10:59:33,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-08 10:59:33,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-08 10:59:33,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-08 10:59:33,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-08 10:59:33,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-08 10:59:33,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-08 10:59:33,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-08 10:59:33,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-08 10:59:33,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-08 10:59:33,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-08 10:59:33,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-08 10:59:33,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-08 10:59:33,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-08 10:59:33,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-08 10:59:33,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-08 10:59:33,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-08 10:59:33,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-08 10:59:33,039 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 10:59:33,054 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-08 10:59:33,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-08 10:59:33,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-08 10:59:33,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-08 10:59:33,056 INFO L138 SettingsManager]: * Use SBE=true [2019-08-08 10:59:33,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-08 10:59:33,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-08 10:59:33,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-08 10:59:33,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-08 10:59:33,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-08 10:59:33,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-08 10:59:33,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-08 10:59:33,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-08 10:59:33,058 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-08 10:59:33,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-08 10:59:33,058 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-08 10:59:33,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-08 10:59:33,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-08 10:59:33,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-08 10:59:33,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-08 10:59:33,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-08 10:59:33,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-08 10:59:33,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-08 10:59:33,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-08 10:59:33,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-08 10:59:33,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-08 10:59:33,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-08 10:59:33,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-08 10:59:33,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-08 10:59:33,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-08 10:59:33,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-08 10:59:33,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-08 10:59:33,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-08 10:59:33,114 INFO L275 PluginConnector]: CDTParser initialized [2019-08-08 10:59:33,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2019-08-08 10:59:33,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4356b64/ead9ec3989854996a5fb81b82a966412/FLAG0a3f4836f [2019-08-08 10:59:33,968 INFO L306 CDTParser]: Found 1 translation units. [2019-08-08 10:59:33,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label13.c [2019-08-08 10:59:33,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4356b64/ead9ec3989854996a5fb81b82a966412/FLAG0a3f4836f [2019-08-08 10:59:34,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4356b64/ead9ec3989854996a5fb81b82a966412 [2019-08-08 10:59:34,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-08 10:59:34,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-08 10:59:34,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-08 10:59:34,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-08 10:59:34,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-08 10:59:34,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 10:59:34" (1/1) ... [2019-08-08 10:59:34,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320275ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:34, skipping insertion in model container [2019-08-08 10:59:34,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 10:59:34" (1/1) ... [2019-08-08 10:59:34,524 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-08 10:59:34,599 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-08 10:59:35,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-08 10:59:35,463 INFO L188 MainTranslator]: Completed pre-run [2019-08-08 10:59:35,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-08 10:59:35,764 INFO L192 MainTranslator]: Completed translation [2019-08-08 10:59:35,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35 WrapperNode [2019-08-08 10:59:35,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-08 10:59:35,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-08 10:59:35,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-08 10:59:35,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-08 10:59:35,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (1/1) ... [2019-08-08 10:59:35,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-08 10:59:35,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-08 10:59:35,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-08 10:59:35,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-08 10:59:35,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:59:35" (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 10:59:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-08 10:59:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-08 10:59:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-08-08 10:59:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-08-08 10:59:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-08 10:59:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-08-08 10:59:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-08-08 10:59:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-08 10:59:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-08-08 10:59:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-08-08 10:59:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-08 10:59:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-08 10:59:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-08 10:59:41,997 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-08 10:59:41,997 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-08 10:59:41,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 10:59:41 BoogieIcfgContainer [2019-08-08 10:59:41,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-08 10:59:42,000 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-08 10:59:42,000 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-08 10:59:42,000 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-08 10:59:42,001 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 10:59:41" (1/1) ... [2019-08-08 10:59:42,014 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-08 10:59:42,017 INFO L155 IcfgInterpreter]: Building call graph [2019-08-08 10:59:42,028 INFO L160 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-08 10:59:42,037 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-08 10:59:42,038 INFO L185 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 [2019-08-08 10:59:42,089 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 39 [2019-08-08 11:00:16,771 INFO L185 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 13 [2019-08-08 11:00:16,861 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-08 11:00:16,861 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-08 11:00:16,864 INFO L179 IcfgInterpreter]: Location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION has predicate 1042536#(and (= ~a16~0 8) (<= ~a18~0 134) (= ~a15~0 3) (= ~a12~0 8) (< 0 (+ ~a18~0 79))) [2019-08-08 11:00:16,865 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-08 11:00:16,874 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-08 11:00:16,877 INFO L168 Benchmark]: Toolchain (without parser) took 42370.95 ms. Allocated memory was 140.0 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 86.3 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2019-08-08 11:00:16,878 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 140.0 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-08 11:00:16,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1258.93 ms. Allocated memory was 140.0 MB in the beginning and 227.0 MB in the end (delta: 87.0 MB). Free memory was 86.1 MB in the beginning and 177.9 MB in the end (delta: -91.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-08-08 11:00:16,880 INFO L168 Benchmark]: Boogie Preprocessor took 179.71 ms. Allocated memory is still 227.0 MB. Free memory was 177.9 MB in the beginning and 166.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-08-08 11:00:16,883 INFO L168 Benchmark]: RCFGBuilder took 6052.96 ms. Allocated memory was 227.0 MB in the beginning and 267.9 MB in the end (delta: 40.9 MB). Free memory was 166.2 MB in the beginning and 233.1 MB in the end (delta: -67.0 MB). Peak memory consumption was 124.9 MB. Max. memory is 7.1 GB. [2019-08-08 11:00:16,885 INFO L168 Benchmark]: Symbolic Interpretation took 34874.79 ms. Allocated memory was 267.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 233.1 MB in the beginning and 1.1 GB in the end (delta: -854.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2019-08-08 11:00:16,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 175]: 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 0.44 ms. Allocated memory is still 140.0 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1258.93 ms. Allocated memory was 140.0 MB in the beginning and 227.0 MB in the end (delta: 87.0 MB). Free memory was 86.1 MB in the beginning and 177.9 MB in the end (delta: -91.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 179.71 ms. Allocated memory is still 227.0 MB. Free memory was 177.9 MB in the beginning and 166.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6052.96 ms. Allocated memory was 227.0 MB in the beginning and 267.9 MB in the end (delta: 40.9 MB). Free memory was 166.2 MB in the beginning and 233.1 MB in the end (delta: -67.0 MB). Peak memory consumption was 124.9 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 34874.79 ms. Allocated memory was 267.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 233.1 MB in the beginning and 1.1 GB in the end (delta: -854.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...