./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/memsafety/test-0218.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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/memsafety/test-0218.i -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 e525b3430c323c2625b8036d0fc4c6ff8b8539ba .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 17:39:50,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 17:39:50,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 17:39:50,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 17:39:50,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 17:39:50,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 17:39:50,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 17:39:50,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 17:39:50,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 17:39:50,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 17:39:50,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 17:39:50,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 17:39:50,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 17:39:50,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 17:39:50,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 17:39:50,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 17:39:50,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 17:39:50,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 17:39:50,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 17:39:50,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 17:39:50,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 17:39:50,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 17:39:50,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 17:39:50,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 17:39:50,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 17:39:50,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 17:39:50,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 17:39:50,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 17:39:50,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 17:39:50,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 17:39:50,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 17:39:50,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 17:39:50,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 17:39:50,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 17:39:50,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 17:39:50,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 17:39:50,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 17:39:50,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 17:39:50,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 17:39:50,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 17:39:50,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 17:39:50,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 17:39:50,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 17:39:50,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 17:39:50,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 17:39:50,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 17:39:50,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 17:39:50,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 17:39:50,988 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 17:39:50,988 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 17:39:50,988 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 17:39:50,989 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 17:39:50,989 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 17:39:50,989 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 17:39:50,990 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 17:39:50,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 17:39:50,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 17:39:50,990 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 17:39:50,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 17:39:50,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 17:39:50,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 17:39:50,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 17:39:50,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 17:39:50,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 17:39:50,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 17:39:50,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 17:39:50,992 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 17:39:50,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 17:39:50,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 17:39:50,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 17:39:50,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 17:39:50,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 17:39:50,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 17:39:50,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 17:39:50,994 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 17:39:50,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e525b3430c323c2625b8036d0fc4c6ff8b8539ba [2021-08-27 17:39:51,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 17:39:51,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 17:39:51,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 17:39:51,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 17:39:51,330 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 17:39:51,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0218.i [2021-08-27 17:39:51,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ea5e890/bb92d3e25510420c90501dada0658c22/FLAGf8f2f9da6 [2021-08-27 17:39:51,899 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 17:39:51,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0218.i [2021-08-27 17:39:51,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ea5e890/bb92d3e25510420c90501dada0658c22/FLAGf8f2f9da6 [2021-08-27 17:39:52,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ea5e890/bb92d3e25510420c90501dada0658c22 [2021-08-27 17:39:52,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 17:39:52,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 17:39:52,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 17:39:52,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 17:39:52,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 17:39:52,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b71c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52, skipping insertion in model container [2021-08-27 17:39:52,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 17:39:52,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 17:39:52,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 17:39:52,581 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 17:39:52,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 17:39:52,657 INFO L208 MainTranslator]: Completed translation [2021-08-27 17:39:52,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52 WrapperNode [2021-08-27 17:39:52,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 17:39:52,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 17:39:52,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 17:39:52,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 17:39:52,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 17:39:52,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 17:39:52,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 17:39:52,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 17:39:52,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 17:39:52,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 17:39:52,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 17:39:52,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 17:39:52,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (1/1) ... [2021-08-27 17:39:52,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 17:39:52,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 17:39:52,765 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) [2021-08-27 17:39:52,796 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 [2021-08-27 17:39:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 17:39:52,815 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 17:39:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 17:39:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 17:39:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 17:39:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 17:39:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 17:39:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 17:39:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 17:39:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 17:39:52,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 17:39:52,988 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 17:39:53,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 17:39:53,274 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-08-27 17:39:53,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:39:53 BoogieIcfgContainer [2021-08-27 17:39:53,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 17:39:53,277 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 17:39:53,277 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 17:39:53,280 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 17:39:53,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 17:39:53,281 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 05:39:52" (1/3) ... [2021-08-27 17:39:53,282 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71206607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 05:39:53, skipping insertion in model container [2021-08-27 17:39:53,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 17:39:53,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:39:52" (2/3) ... [2021-08-27 17:39:53,282 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71206607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 05:39:53, skipping insertion in model container [2021-08-27 17:39:53,283 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 17:39:53,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:39:53" (3/3) ... [2021-08-27 17:39:53,284 INFO L389 chiAutomizerObserver]: Analyzing ICFG test-0218.i [2021-08-27 17:39:53,317 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 17:39:53,317 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 17:39:53,317 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 17:39:53,317 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 17:39:53,317 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 17:39:53,318 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 17:39:53,318 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 17:39:53,318 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 17:39:53,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 17:39:53,360 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-08-27 17:39:53,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 17:39:53,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 17:39:53,365 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 17:39:53,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 17:39:53,366 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 17:39:53,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 17:39:53,376 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-08-27 17:39:53,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 17:39:53,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 17:39:53,377 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 17:39:53,377 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 17:39:53,382 INFO L791 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(12);call ~#list~0.base, ~#list~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 36#L-1true havoc main_#res;havoc main_#t~ret33, main_#t~nondet32, main_#t~ret35, main_#t~nondet34, main_#t~nondet31, main_#t~nondet36, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem38.base, main_#t~mem38.offset, main_~next~1.base, main_~next~1.offset, main_~end_point~0, main_~direction~0, main_~cursor~1.base, main_~cursor~1.offset; 8#L726-2true [2021-08-27 17:39:53,383 INFO L793 eck$LassoCheckResult]: Loop: 8#L726-2true assume !!(0 != main_#t~nondet31);havoc main_#t~nondet31; 11#L724-2true assume !true; 14#L726-1true assume !true; 8#L726-2true [2021-08-27 17:39:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 17:39:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 1 times [2021-08-27 17:39:53,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 17:39:53,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213933520] [2021-08-27 17:39:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 17:39:53,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 17:39:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,492 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 17:39:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,541 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 17:39:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 17:39:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 52490, now seen corresponding path program 1 times [2021-08-27 17:39:53,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 17:39:53,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227869397] [2021-08-27 17:39:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 17:39:53,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 17:39:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 17:39:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 17:39:53,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 17:39:53,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227869397] [2021-08-27 17:39:53,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227869397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 17:39:53,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 17:39:53,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 17:39:53,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485310626] [2021-08-27 17:39:53,592 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 17:39:53,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 17:39:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 17:39:53,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 17:39:53,608 INFO L87 Difference]: Start difference. First operand has 52 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 17:39:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 17:39:53,619 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2021-08-27 17:39:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 17:39:53,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 72 transitions. [2021-08-27 17:39:53,625 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-08-27 17:39:53,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 48 states and 68 transitions. [2021-08-27 17:39:53,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-08-27 17:39:53,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-08-27 17:39:53,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 68 transitions. [2021-08-27 17:39:53,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 17:39:53,636 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-08-27 17:39:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 68 transitions. [2021-08-27 17:39:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-27 17:39:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.434782608695652) internal successors, (66), 45 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 17:39:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2021-08-27 17:39:53,661 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-08-27 17:39:53,661 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-08-27 17:39:53,661 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 17:39:53,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 68 transitions. [2021-08-27 17:39:53,663 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-08-27 17:39:53,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 17:39:53,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 17:39:53,664 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 17:39:53,664 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 17:39:53,664 INFO L791 eck$LassoCheckResult]: Stem: 149#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(12);call ~#list~0.base, ~#list~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 128#L-1 havoc main_#res;havoc main_#t~ret33, main_#t~nondet32, main_#t~ret35, main_#t~nondet34, main_#t~nondet31, main_#t~nondet36, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem38.base, main_#t~mem38.offset, main_~next~1.base, main_~next~1.offset, main_~end_point~0, main_~direction~0, main_~cursor~1.base, main_~cursor~1.offset; 129#L726-2 [2021-08-27 17:39:53,664 INFO L793 eck$LassoCheckResult]: Loop: 129#L726-2 assume !!(0 != main_#t~nondet31);havoc main_#t~nondet31; 131#L724-2 assume !(0 != main_#t~nondet32);havoc main_#t~nondet32; 140#L726-1 assume !(0 != main_#t~nondet34);havoc main_#t~nondet34; 129#L726-2 [2021-08-27 17:39:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 17:39:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 2 times [2021-08-27 17:39:53,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 17:39:53,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535353428] [2021-08-27 17:39:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 17:39:53,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 17:39:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,695 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 17:39:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 17:39:53,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 17:39:53,710 INFO L82 PathProgramCache]: Analyzing trace with hash 49962, now seen corresponding path program 1 times [2021-08-27 17:39:53,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 17:39:53,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087511891] [2021-08-27 17:39:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 17:39:53,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 17:39:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,718 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 17:39:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,724 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 17:39:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 17:39:53,726 INFO L82 PathProgramCache]: Analyzing trace with hash 37288712, now seen corresponding path program 1 times [2021-08-27 17:39:53,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 17:39:53,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894506199] [2021-08-27 17:39:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 17:39:53,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 17:39:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,753 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 17:39:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 17:39:53,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 17:39:54,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 05:39:54 BoogieIcfgContainer [2021-08-27 17:39:54,166 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 17:39:54,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 17:39:54,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 17:39:54,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 17:39:54,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:39:53" (3/4) ... [2021-08-27 17:39:54,169 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 17:39:54,199 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 17:39:54,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 17:39:54,201 INFO L168 Benchmark]: Toolchain (without parser) took 2014.67 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 43.6 MB in the beginning and 54.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,201 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 47.1 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 17:39:54,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.96 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 42.7 MB in the end (delta: 640.6 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 40.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,203 INFO L168 Benchmark]: Boogie Preprocessor took 32.14 ms. Allocated memory is still 65.0 MB. Free memory was 40.0 MB in the beginning and 37.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,205 INFO L168 Benchmark]: RCFGBuilder took 534.24 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 37.9 MB in the beginning and 45.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,206 INFO L168 Benchmark]: BuchiAutomizer took 888.45 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 56.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,208 INFO L168 Benchmark]: Witness Printer took 32.99 ms. Allocated memory is still 88.1 MB. Free memory was 56.3 MB in the beginning and 54.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 17:39:54,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 47.1 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.96 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 42.7 MB in the end (delta: 640.6 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 40.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.14 ms. Allocated memory is still 65.0 MB. Free memory was 40.0 MB in the beginning and 37.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 534.24 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 37.9 MB in the beginning and 45.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 888.45 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 56.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 32.99 ms. Allocated memory is still 88.1 MB. Free memory was 56.3 MB in the beginning and 54.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 2 locations. The remainder module has 48 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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 14.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 48 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 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: 723]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24552} State at position 1 is {cursor=0, NULL=0, NULL=24554, \result=0, NULL=24552, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c773a13=16, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4954841c=0, list=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@1d4fd5b7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@1d4fd5b7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@2c4f1cf6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b106331=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e257dd5=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c1ec01b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43057e4=0, end_point=0, NULL=24553, NULL=0, list=24555, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@2c4f1cf6=0, next=0, next=0, cursor=0, direction=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 723]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L722] static list_t list; Loop: [L723] COND TRUE __VERIFIER_nondet_int() [L724] COND FALSE !(__VERIFIER_nondet_int()) [L726] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 17:39:54,253 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...