java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/Sifa.xml -i ../../../trunk/examples/concurrent/regression/SimpleIncorrectTwoContextSwitches.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:25:16,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:25:16,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:25:16,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:25:16,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:25:16,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:25:16,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:25:16,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:25:16,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:25:16,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:25:16,817 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:25:16,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:25:16,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:25:16,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:25:16,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:25:16,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:25:16,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:25:16,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:25:16,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:25:16,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:25:16,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:25:16,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:25:16,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:25:16,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:25:16,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:25:16,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:25:16,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:25:16,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:25:16,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:25:16,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:25:16,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:25:16,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:25:16,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:25:16,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:25:16,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:25:16,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:25:16,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:25:16,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:25:16,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:25:16,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:25:16,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:25:16,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:25:16,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:25:16,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:25:16,920 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:25:16,921 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:25:16,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/regression/SimpleIncorrectTwoContextSwitches.bpl [2019-08-05 11:25:16,922 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/regression/SimpleIncorrectTwoContextSwitches.bpl' [2019-08-05 11:25:16,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:25:16,957 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-08-05 11:25:16,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:25:16,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:25:16,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:25:16,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:16,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:16,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:16,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:17,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:17,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:17,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (1/1) ... [2019-08-05 11:25:17,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:25:17,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:25:17,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:25:17,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:25:17,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:25:16" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 11:25:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure ~init [2019-08-05 11:25:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ~init [2019-08-05 11:25:17,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2019-08-05 11:25:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2019-08-05 11:25:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2019-08-05 11:25:17,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread2 given in one single declaration [2019-08-05 11:25:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure Thread2 [2019-08-05 11:25:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread2 [2019-08-05 11:25:17,293 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:25:17,294 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 11:25:17,295 INFO L202 PluginConnector]: Adding new model SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:25:17 BoogieIcfgContainer [2019-08-05 11:25:17,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:25:17,296 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-05 11:25:17,296 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-05 11:25:17,296 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-05 11:25:17,298 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "SimpleIncorrectTwoContextSwitches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:25:17" (1/1) ... [2019-08-05 11:25:17,310 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-05 11:25:17,313 INFO L155 IcfgInterpreter]: Building call graph [2019-08-05 11:25:17,320 INFO L160 IcfgInterpreter]: Initial procedures are [Thread1] [2019-08-05 11:25:17,329 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-05 11:25:17,330 INFO L184 IcfgInterpreter]: Interpreting procedure Thread1 with input of size 1 [2019-08-05 11:25:17,670 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-05 11:25:17,671 INFO L176 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-05 11:25:17,674 INFO L178 IcfgInterpreter]: Location Thread1Err0ASSERT_VIOLATIONASSERT has predicate 22#(= (- 1) g) [2019-08-05 11:25:17,682 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-05 11:25:17,685 INFO L168 Benchmark]: Toolchain (without parser) took 726.98 ms. Allocated memory is still 133.2 MB. Free memory was 110.7 MB in the beginning and 90.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:25:17,686 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:25:17,688 INFO L168 Benchmark]: Boogie Preprocessor took 51.37 ms. Allocated memory is still 133.2 MB. Free memory was 110.7 MB in the beginning and 108.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:25:17,689 INFO L168 Benchmark]: RCFGBuilder took 285.09 ms. Allocated memory is still 133.2 MB. Free memory was 108.4 MB in the beginning and 99.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:25:17,690 INFO L168 Benchmark]: Symbolic Interpretation took 386.40 ms. Allocated memory is still 133.2 MB. Free memory was 99.0 MB in the beginning and 90.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2019-08-05 11:25:17,693 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 28]: Unable to prove that assertion always holds Unable to prove that assertion always holds 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: * Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.37 ms. Allocated memory is still 133.2 MB. Free memory was 110.7 MB in the beginning and 108.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.09 ms. Allocated memory is still 133.2 MB. Free memory was 108.4 MB in the beginning and 99.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 386.40 ms. Allocated memory is still 133.2 MB. Free memory was 99.0 MB in the beginning and 90.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...