./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/ldv-regression/stateful_check.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:27:13,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:27:13,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:27:13,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:27:13,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:27:13,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:27:13,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:27:13,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:27:13,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:27:13,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:27:13,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:27:13,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:27:13,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:27:13,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:27:13,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:27:13,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:27:13,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:27:13,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:27:13,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:27:13,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:27:13,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:27:13,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:27:13,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:27:13,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:27:13,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:27:13,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:27:13,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:27:13,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:27:13,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:27:13,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:27:13,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:27:13,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:27:13,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:27:13,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:27:13,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:27:13,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:27:13,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:27:13,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:27:13,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:27:13,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:27:13,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:27:13,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:27:13,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:27:13,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:27:13,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:27:13,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:27:13,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:27:13,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:27:13,935 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:27:13,935 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:27:13,935 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:27:13,935 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:27:13,936 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:27:13,936 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:27:13,936 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:27:13,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:27:13,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:27:13,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:27:13,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:27:13,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:27:13,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:27:13,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:27:13,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:27:13,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:27:13,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:27:13,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:27:13,938 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:27:13,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:27:13,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:27:13,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:27:13,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:27:13,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:27:13,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:27:13,940 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:27:13,940 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e [2021-12-28 09:27:14,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:27:14,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:27:14,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:27:14,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:27:14,230 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:27:14,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2021-12-28 09:27:14,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4989926ee/ff2f59502b6d40be9e135059d47129d4/FLAGc2dbffdf2 [2021-12-28 09:27:14,566 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:27:14,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2021-12-28 09:27:14,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4989926ee/ff2f59502b6d40be9e135059d47129d4/FLAGc2dbffdf2 [2021-12-28 09:27:14,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4989926ee/ff2f59502b6d40be9e135059d47129d4 [2021-12-28 09:27:14,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:27:14,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:27:15,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:27:15,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:27:15,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:27:15,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:27:14" (1/1) ... [2021-12-28 09:27:15,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2907d1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15, skipping insertion in model container [2021-12-28 09:27:15,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:27:14" (1/1) ... [2021-12-28 09:27:15,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:27:15,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:27:15,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2021-12-28 09:27:15,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:27:15,130 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:27:15,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2021-12-28 09:27:15,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:27:15,150 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:27:15,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15 WrapperNode [2021-12-28 09:27:15,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:27:15,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:27:15,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:27:15,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:27:15,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,199 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 116 [2021-12-28 09:27:15,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:27:15,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:27:15,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:27:15,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:27:15,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:27:15,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:27:15,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:27:15,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:27:15,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (1/1) ... [2021-12-28 09:27:15,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:27:15,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:27:15,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:27:15,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:27:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:27:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:27:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:27:15,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:27:15,311 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:27:15,313 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:27:15,480 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:27:15,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:27:15,485 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:27:15,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:27:15 BoogieIcfgContainer [2021-12-28 09:27:15,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:27:15,487 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:27:15,503 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:27:15,505 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:27:15,506 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:27:15,506 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:27:14" (1/3) ... [2021-12-28 09:27:15,507 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14a8150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:27:15, skipping insertion in model container [2021-12-28 09:27:15,507 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:27:15,507 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:27:15" (2/3) ... [2021-12-28 09:27:15,507 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14a8150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:27:15, skipping insertion in model container [2021-12-28 09:27:15,507 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:27:15,508 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:27:15" (3/3) ... [2021-12-28 09:27:15,509 INFO L388 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2021-12-28 09:27:15,557 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:27:15,558 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:27:15,558 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:27:15,558 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:27:15,558 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:27:15,558 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:27:15,558 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:27:15,558 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:27:15,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:27:15,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-28 09:27:15,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:27:15,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:27:15,596 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:27:15,596 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:27:15,597 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:27:15,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:27:15,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-12-28 09:27:15,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:27:15,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:27:15,601 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:27:15,601 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:27:15,607 INFO L791 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 29#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 50#L72true main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 36#L78-2true [2021-12-28 09:27:15,607 INFO L793 eck$LassoCheckResult]: Loop: 36#L78-2true assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 17#L82true assume main_#t~switch8#1; 18#L83true assume !(0 == main_~ldv_s_misc_fops_file_operations~0#1); 12#L80true havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 36#L78-2true [2021-12-28 09:27:15,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:27:15,615 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-28 09:27:15,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:27:15,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341845456] [2021-12-28 09:27:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:27:15,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:27:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:15,690 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:27:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:15,717 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:27:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:27:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1327184, now seen corresponding path program 1 times [2021-12-28 09:27:15,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:27:15,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532956868] [2021-12-28 09:27:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:27:15,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:27:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:15,731 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:27:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:15,745 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:27:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:27:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1804166384, now seen corresponding path program 1 times [2021-12-28 09:27:15,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:27:15,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30423915] [2021-12-28 09:27:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:27:15,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:27:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:27:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:27:15,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:27:15,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30423915] [2021-12-28 09:27:15,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30423915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:27:15,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:27:15,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:27:15,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842000802] [2021-12-28 09:27:15,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:27:15,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:27:15,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:27:15,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:27:15,899 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:27:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:27:15,942 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-12-28 09:27:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:27:15,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 78 transitions. [2021-12-28 09:27:15,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-12-28 09:27:15,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 44 states and 60 transitions. [2021-12-28 09:27:15,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-12-28 09:27:15,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-12-28 09:27:15,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 60 transitions. [2021-12-28 09:27:15,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:27:15,970 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-12-28 09:27:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 60 transitions. [2021-12-28 09:27:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-12-28 09:27:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:27:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-12-28 09:27:15,993 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-12-28 09:27:15,993 INFO L587 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-12-28 09:27:15,993 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:27:15,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 60 transitions. [2021-12-28 09:27:15,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-12-28 09:27:15,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:27:15,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:27:15,996 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:27:15,996 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-28 09:27:15,996 INFO L791 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 137#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 138#L72 main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 142#L78-2 [2021-12-28 09:27:15,996 INFO L793 eck$LassoCheckResult]: Loop: 142#L78-2 assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 145#L82 assume !main_#t~switch8#1;main_#t~switch8#1 := main_#t~switch8#1 || 1 == main_#t~nondet7#1; 151#L90 assume main_#t~switch8#1; 152#L91 assume !(1 == main_~ldv_s_misc_fops_file_operations~0#1); 139#L80 havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 142#L78-2 [2021-12-28 09:27:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:27:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2021-12-28 09:27:15,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:27:15,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327132837] [2021-12-28 09:27:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:27:15,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:27:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:16,016 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:27:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:16,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:27:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:27:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 41592526, now seen corresponding path program 1 times [2021-12-28 09:27:16,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:27:16,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624512118] [2021-12-28 09:27:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:27:16,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:27:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:16,039 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:27:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:16,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:27:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:27:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash 95032878, now seen corresponding path program 1 times [2021-12-28 09:27:16,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:27:16,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312120874] [2021-12-28 09:27:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:27:16,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:27:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:16,058 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:27:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:27:16,075 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:27:16,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:27:16 BoogieIcfgContainer [2021-12-28 09:27:16,274 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:27:16,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:27:16,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:27:16,275 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:27:16,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:27:15" (3/4) ... [2021-12-28 09:27:16,277 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:27:16,311 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:27:16,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:27:16,312 INFO L158 Benchmark]: Toolchain (without parser) took 1314.74ms. Allocated memory was 46.1MB in the beginning and 71.3MB in the end (delta: 25.2MB). Free memory was 22.5MB in the beginning and 42.3MB in the end (delta: -19.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-12-28 09:27:16,312 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 46.1MB. Free memory was 28.6MB in the beginning and 28.6MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:27:16,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.16ms. Allocated memory is still 56.6MB. Free memory was 42.0MB in the beginning and 32.2MB in the end (delta: 9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 09:27:16,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.14ms. Allocated memory is still 56.6MB. Free memory was 32.0MB in the beginning and 40.7MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:27:16,313 INFO L158 Benchmark]: Boogie Preprocessor took 13.64ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:27:16,313 INFO L158 Benchmark]: RCFGBuilder took 269.32ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 28.9MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:27:16,314 INFO L158 Benchmark]: BuchiAutomizer took 787.11ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 43.9MB in the end (delta: -15.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-28 09:27:16,314 INFO L158 Benchmark]: Witness Printer took 36.84ms. Allocated memory is still 71.3MB. Free memory was 43.9MB in the beginning and 42.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:27:16,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 46.1MB. Free memory was 28.6MB in the beginning and 28.6MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.16ms. Allocated memory is still 56.6MB. Free memory was 42.0MB in the beginning and 32.2MB in the end (delta: 9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.14ms. Allocated memory is still 56.6MB. Free memory was 32.0MB in the beginning and 40.7MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.64ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.32ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 28.9MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 787.11ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 43.9MB in the end (delta: -15.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Witness Printer took 36.84ms. Allocated memory is still 71.3MB. Free memory was 43.9MB in the beginning and 42.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 44 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 44 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 50 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 78]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a9e4c88=4, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7254699=1, NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7725b0bc=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a73ba13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7a89162=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2538248b=0, NULL=0, ldv_s_misc_fops_file_operations=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@19e27268=0, open_called=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d922dda=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ce73f2e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1063bd39=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 78]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; [L77] RET my_init() Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L91] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:27:16,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)