./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer --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 5d0e37f725f553afaea418dbbe7c392bdc4622ea .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 17:09:57,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:09:57,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:09:57,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:09:57,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:09:57,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:09:57,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:09:57,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:09:57,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:09:57,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:09:57,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:09:57,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:09:57,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:09:57,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:09:57,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:09:57,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:09:57,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:09:57,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:09:57,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:09:57,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:09:57,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:09:57,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:09:57,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:09:57,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:09:57,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:09:57,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:09:57,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:09:57,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:09:57,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:09:57,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:09:57,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:09:57,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:09:57,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:09:57,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:09:57,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:09:57,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:09:57,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:09:57,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:09:57,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:09:57,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:09:57,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:09:57,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 17:09:57,043 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:09:57,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:09:57,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:09:57,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:09:57,044 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:09:57,044 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:09:57,044 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:09:57,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:09:57,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:09:57,046 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:09:57,047 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:09:57,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:09:57,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:09:57,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:09:57,047 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:09:57,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:09:57,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:09:57,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:09:57,048 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:09:57,048 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:09:57,048 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer 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 -> 5d0e37f725f553afaea418dbbe7c392bdc4622ea [2019-12-07 17:09:57,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:09:57,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:09:57,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:09:57,159 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:09:57,159 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:09:57,159 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2019-12-07 17:09:57,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/data/42f2d0537/e012aedd1fbb429483227fc5957f2484/FLAG52d013fde [2019-12-07 17:09:57,648 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:09:57,648 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2019-12-07 17:09:57,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/data/42f2d0537/e012aedd1fbb429483227fc5957f2484/FLAG52d013fde [2019-12-07 17:09:57,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/data/42f2d0537/e012aedd1fbb429483227fc5957f2484 [2019-12-07 17:09:57,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:09:57,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:09:57,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:09:57,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:09:57,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:09:57,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:57,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551fb3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57, skipping insertion in model container [2019-12-07 17:09:57,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:57,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:09:57,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:09:57,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:09:57,906 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:09:57,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:09:57,966 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:09:57,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57 WrapperNode [2019-12-07 17:09:57,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:09:57,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:09:57,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:09:57,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:09:57,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:57,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:57,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:09:57,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:09:57,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:09:57,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:09:58,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... [2019-12-07 17:09:58,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:09:58,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:09:58,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:09:58,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:09:58,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 17:09:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 17:09:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 17:09:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:09:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:09:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:09:58,283 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:09:58,283 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 17:09:58,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:09:58 BoogieIcfgContainer [2019-12-07 17:09:58,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:09:58,285 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:09:58,285 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:09:58,287 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:09:58,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:09:58,287 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:09:57" (1/3) ... [2019-12-07 17:09:58,288 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7db1cd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:09:58, skipping insertion in model container [2019-12-07 17:09:58,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:09:58,288 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:57" (2/3) ... [2019-12-07 17:09:58,288 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7db1cd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:09:58, skipping insertion in model container [2019-12-07 17:09:58,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:09:58,289 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:09:58" (3/3) ... [2019-12-07 17:09:58,290 INFO L371 chiAutomizerObserver]: Analyzing ICFG tree_cnstr.i [2019-12-07 17:09:58,324 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:09:58,324 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:09:58,324 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:09:58,324 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:09:58,324 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:09:58,324 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:09:58,324 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:09:58,324 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:09:58,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2019-12-07 17:09:58,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-12-07 17:09:58,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:58,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:58,351 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:58,351 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:09:58,352 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:09:58,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2019-12-07 17:09:58,353 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-12-07 17:09:58,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:58,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:58,353 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:58,354 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:09:58,358 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 11#L534-2true [2019-12-07 17:09:58,359 INFO L796 eck$LassoCheckResult]: Loop: 11#L534-2true assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 8#L524-2true assume !true; 23#L523-5true call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 21#L529true assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 26#L529-2true call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 6#L534true assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 11#L534-2true [2019-12-07 17:09:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-12-07 17:09:58,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760794254] [2019-12-07 17:09:58,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,464 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1235889697, now seen corresponding path program 1 times [2019-12-07 17:09:58,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738625370] [2019-12-07 17:09:58,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:58,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738625370] [2019-12-07 17:09:58,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:09:58,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:09:58,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318422686] [2019-12-07 17:09:58,492 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 17:09:58,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:09:58,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:09:58,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:09:58,504 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-12-07 17:09:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:09:58,509 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2019-12-07 17:09:58,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:09:58,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 35 transitions. [2019-12-07 17:09:58,512 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-12-07 17:09:58,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 31 transitions. [2019-12-07 17:09:58,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-12-07 17:09:58,515 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-12-07 17:09:58,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 31 transitions. [2019-12-07 17:09:58,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:09:58,516 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 17:09:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 31 transitions. [2019-12-07 17:09:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 17:09:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:09:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-12-07 17:09:58,534 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 17:09:58,534 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 17:09:58,534 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:09:58,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-12-07 17:09:58,535 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-12-07 17:09:58,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:58,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:58,535 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:58,535 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:09:58,536 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 66#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 62#L534-2 [2019-12-07 17:09:58,536 INFO L796 eck$LassoCheckResult]: Loop: 62#L534-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 59#L524-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 64#L523-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 65#L523-3 assume !main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset; 72#L523-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 74#L529 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 75#L529-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 61#L534 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 62#L534-2 [2019-12-07 17:09:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,536 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2019-12-07 17:09:58,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344083063] [2019-12-07 17:09:58,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2066931060, now seen corresponding path program 1 times [2019-12-07 17:09:58,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395174085] [2019-12-07 17:09:58,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:58,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395174085] [2019-12-07 17:09:58,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:09:58,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:09:58,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059739521] [2019-12-07 17:09:58,616 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 17:09:58,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:09:58,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:09:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:09:58,617 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-12-07 17:09:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:09:58,699 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2019-12-07 17:09:58,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:09:58,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2019-12-07 17:09:58,701 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 23 [2019-12-07 17:09:58,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 41 transitions. [2019-12-07 17:09:58,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2019-12-07 17:09:58,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-12-07 17:09:58,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 41 transitions. [2019-12-07 17:09:58,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:09:58,704 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 41 transitions. [2019-12-07 17:09:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 41 transitions. [2019-12-07 17:09:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-12-07 17:09:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 17:09:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2019-12-07 17:09:58,708 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-12-07 17:09:58,708 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-12-07 17:09:58,708 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:09:58,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2019-12-07 17:09:58,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2019-12-07 17:09:58,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:58,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:58,709 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:58,710 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:09:58,710 INFO L794 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 124#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 119#L534-2 [2019-12-07 17:09:58,710 INFO L796 eck$LassoCheckResult]: Loop: 119#L534-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 116#L524-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 121#L523-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 122#L523-3 assume !main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset; 134#L523-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 132#L529 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11; 133#L529-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 118#L534 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 119#L534-2 [2019-12-07 17:09:58,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,710 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2019-12-07 17:09:58,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128075659] [2019-12-07 17:09:58,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,731 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2066932982, now seen corresponding path program 1 times [2019-12-07 17:09:58,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894503969] [2019-12-07 17:09:58,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:58,751 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:58,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1537472840, now seen corresponding path program 1 times [2019-12-07 17:09:58,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:58,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917947580] [2019-12-07 17:09:58,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:58,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917947580] [2019-12-07 17:09:58,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:09:58,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:09:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044198764] [2019-12-07 17:09:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:09:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:09:58,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:09:58,958 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. cyclomatic complexity: 14 Second operand 5 states. [2019-12-07 17:09:59,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:09:59,095 INFO L93 Difference]: Finished difference Result 54 states and 80 transitions. [2019-12-07 17:09:59,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:09:59,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 80 transitions. [2019-12-07 17:09:59,097 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 44 [2019-12-07 17:09:59,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 54 states and 80 transitions. [2019-12-07 17:09:59,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-12-07 17:09:59,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-12-07 17:09:59,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 80 transitions. [2019-12-07 17:09:59,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:09:59,099 INFO L688 BuchiCegarLoop]: Abstraction has 54 states and 80 transitions. [2019-12-07 17:09:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 80 transitions. [2019-12-07 17:09:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2019-12-07 17:09:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:09:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2019-12-07 17:09:59,101 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 45 transitions. [2019-12-07 17:09:59,101 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 45 transitions. [2019-12-07 17:09:59,101 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:09:59,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 45 transitions. [2019-12-07 17:09:59,102 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 28 [2019-12-07 17:09:59,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:59,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:59,102 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:59,103 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:09:59,103 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 216#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 210#L534-2 [2019-12-07 17:09:59,103 INFO L796 eck$LassoCheckResult]: Loop: 210#L534-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 213#L524-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 214#L523-1 assume !main_#t~short6; 215#L523-3 assume !main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset; 234#L523-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 233#L529 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11; 228#L529-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 209#L534 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 210#L534-2 [2019-12-07 17:09:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:59,103 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2019-12-07 17:09:59,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:59,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851509229] [2019-12-07 17:09:59,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:59,114 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:59,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2124191284, now seen corresponding path program 1 times [2019-12-07 17:09:59,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:59,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941408921] [2019-12-07 17:09:59,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:59,125 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1480214538, now seen corresponding path program 1 times [2019-12-07 17:09:59,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:59,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77661870] [2019-12-07 17:09:59,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:59,145 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:59,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:09:59 BoogieIcfgContainer [2019-12-07 17:09:59,423 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:09:59,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:09:59,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:09:59,424 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:09:59,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:09:58" (3/4) ... [2019-12-07 17:09:59,426 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 17:09:59,453 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f7f7936-6a05-4aca-a194-532507f7a432/bin/uautomizer/witness.graphml [2019-12-07 17:09:59,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:09:59,454 INFO L168 Benchmark]: Toolchain (without parser) took 1784.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 932.7 MB in the beginning and 871.5 MB in the end (delta: 61.2 MB). Peak memory consumption was 163.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:59,455 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:09:59,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 932.7 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:59,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:59,456 INFO L168 Benchmark]: Boogie Preprocessor took 21.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:09:59,457 INFO L168 Benchmark]: RCFGBuilder took 264.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:59,457 INFO L168 Benchmark]: BuchiAutomizer took 1138.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 871.5 MB in the end (delta: 180.2 MB). Peak memory consumption was 180.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:59,457 INFO L168 Benchmark]: Witness Printer took 29.48 ms. Allocated memory is still 1.1 GB. Free memory is still 871.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:09:59,460 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 932.7 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 264.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1138.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 871.5 MB in the end (delta: 180.2 MB). Peak memory consumption was 180.2 MB. Max. memory is 11.5 GB. * Witness Printer took 29.48 ms. Allocated memory is still 1.1 GB. Free memory is still 871.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 80 SDtfs, 55 SDslu, 69 SDs, 0 SdLazy, 134 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 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: 521]: 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.CASTFieldReference@19bf4526=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6eb95e88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2a05a5c6=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@51d275b0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@59720fd2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4d2d1439=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4b79b61a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6b1ef2ac=0, root=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@25b37ab1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@19bf4526=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16f6a458=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b2e9c7d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a0ac10f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d53ad01=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b393927=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5ff39aa0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@25b37ab1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b2e9c7d=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a0ac10f=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6b1ef2ac=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1501510f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2a05a5c6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c56aa7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3946cafd=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@59720fd2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@766bb9ed=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4d2d1439=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5ff39aa0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5e9ae096=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cb84c96=0, n=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4835d23=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1501510f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6657bbc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@51d275b0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4b79b61a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@766bb9ed=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@27882ba5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5e9ae096=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6657bbc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@33e8a90b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6eb95e88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c56aa7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3946cafd=0, pred=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b393927=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 521]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L518] struct TreeNode* root = malloc(sizeof(*root)), *n; [L519] root->left = ((void *)0) [L520] root->right = ((void *)0) Loop: [L521] COND TRUE __VERIFIER_nondet_int() [L522] n = root [L523] EXPR n->left [L523] n->left && n->right [L523] COND FALSE !(n->left && n->right) [L529] EXPR n->left [L529] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L534] EXPR n->right [L534] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...