./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/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 11b056901df31de1f669b4e706c0349e662dc104 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 09:46:16,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:46:16,772 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:46:16,780 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:46:16,780 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:46:16,781 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:46:16,782 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:46:16,783 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:46:16,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:46:16,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:46:16,785 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:46:16,785 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:46:16,786 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:46:16,786 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:46:16,787 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:46:16,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:46:16,788 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:46:16,789 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:46:16,790 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:46:16,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:46:16,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:46:16,793 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:46:16,794 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:46:16,794 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:46:16,794 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:46:16,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:46:16,796 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:46:16,796 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:46:16,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:46:16,797 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:46:16,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:46:16,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:46:16,798 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:46:16,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:46:16,799 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:46:16,799 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:46:16,799 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 09:46:16,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:46:16,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:46:16,810 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:46:16,810 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:46:16,811 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:46:16,811 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:46:16,811 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:46:16,811 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:46:16,811 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:46:16,811 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:46:16,811 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:46:16,811 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:46:16,812 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:46:16,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:46:16,813 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:46:16,813 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:46:16,813 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:46:16,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:46:16,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:46:16,813 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:46:16,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:46:16,814 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:46:16,814 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:46:16,814 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:46:16,815 INFO L133 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/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/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 -> 11b056901df31de1f669b4e706c0349e662dc104 [2018-11-18 09:46:16,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:46:16,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:46:16,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:46:16,851 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:46:16,851 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:46:16,852 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i [2018-11-18 09:46:16,898 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/data/e834df2ca/d12de94c2c15417ea34629dd69f05a7e/FLAG4131f9da2 [2018-11-18 09:46:17,277 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:46:17,278 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i [2018-11-18 09:46:17,288 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/data/e834df2ca/d12de94c2c15417ea34629dd69f05a7e/FLAG4131f9da2 [2018-11-18 09:46:17,654 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/data/e834df2ca/d12de94c2c15417ea34629dd69f05a7e [2018-11-18 09:46:17,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:46:17,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:46:17,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:46:17,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:46:17,661 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:46:17,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:46:17" (1/1) ... [2018-11-18 09:46:17,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f3464b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:17, skipping insertion in model container [2018-11-18 09:46:17,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:46:17" (1/1) ... [2018-11-18 09:46:17,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:46:17,701 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:46:17,901 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:46:17,909 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:46:17,949 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:46:18,024 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:46:18,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18 WrapperNode [2018-11-18 09:46:18,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:46:18,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:46:18,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:46:18,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:46:18,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:46:18,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:46:18,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:46:18,059 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:46:18,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... [2018-11-18 09:46:18,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:46:18,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:46:18,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:46:18,082 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:46:18,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/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 [2018-11-18 09:46:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:46:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:46:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:46:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 09:46:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 09:46:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:46:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:46:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:46:18,419 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:46:18,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:46:18 BoogieIcfgContainer [2018-11-18 09:46:18,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:46:18,420 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:46:18,420 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:46:18,422 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:46:18,423 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:46:18,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:46:17" (1/3) ... [2018-11-18 09:46:18,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a5d418b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:46:18, skipping insertion in model container [2018-11-18 09:46:18,424 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:46:18,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:46:18" (2/3) ... [2018-11-18 09:46:18,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a5d418b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:46:18, skipping insertion in model container [2018-11-18 09:46:18,424 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:46:18,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:46:18" (3/3) ... [2018-11-18 09:46:18,425 INFO L375 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr_true-unreach-call_false-termination.i [2018-11-18 09:46:18,458 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:46:18,458 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:46:18,458 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:46:18,459 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:46:18,459 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:46:18,459 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:46:18,459 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:46:18,459 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:46:18,459 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:46:18,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2018-11-18 09:46:18,486 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 09:46:18,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:46:18,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:46:18,491 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:46:18,491 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:46:18,491 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:46:18,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2018-11-18 09:46:18,494 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 09:46:18,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:46:18,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:46:18,494 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:46:18,494 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:46:18,499 INFO L794 eck$LassoCheckResult]: Stem: 22#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 31#L557-2true [2018-11-18 09:46:18,500 INFO L796 eck$LassoCheckResult]: Loop: 31#L557-2true assume true; 6#L544-1true 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; 41#L547-2true assume !true; 24#L546-6true call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 9#L552true assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(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; 14#L552-2true call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 27#L557true 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;call main_#t~malloc17.base, main_#t~malloc17.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc17.base, main_#t~malloc17.offset, main_~n~0.base, 4 + main_~n~0.offset, 4);call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem18.base, main_#t~mem18.offset, 4);havoc main_#t~mem18.base, main_#t~mem18.offset;call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem19.base, 4 + main_#t~mem19.offset, 4);havoc main_#t~mem19.base, main_#t~mem19.offset; 31#L557-2true [2018-11-18 09:46:18,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,504 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 09:46:18,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:18,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1143178396, now seen corresponding path program 1 times [2018-11-18 09:46:18,587 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:18,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:46:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:46:18,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:46:18,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:46:18,611 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:46:18,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:46:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:46:18,623 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-11-18 09:46:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:46:18,629 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2018-11-18 09:46:18,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:46:18,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 67 transitions. [2018-11-18 09:46:18,633 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 09:46:18,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 42 states and 57 transitions. [2018-11-18 09:46:18,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 09:46:18,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 09:46:18,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 57 transitions. [2018-11-18 09:46:18,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:46:18,638 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2018-11-18 09:46:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 57 transitions. [2018-11-18 09:46:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-18 09:46:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 09:46:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2018-11-18 09:46:18,657 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2018-11-18 09:46:18,657 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2018-11-18 09:46:18,657 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:46:18,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 57 transitions. [2018-11-18 09:46:18,658 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 09:46:18,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:46:18,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:46:18,658 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:46:18,658 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:46:18,658 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;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_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(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); 115#L557-2 [2018-11-18 09:46:18,659 INFO L796 eck$LassoCheckResult]: Loop: 115#L557-2 assume true; 123#L544-1 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 128#L547-2 assume true; 117#L546-1 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 118#L546-2 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 124#L546-4 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset; 146#L546-6 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 135#L552 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(8);call write~$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$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 136#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 114#L557 assume (main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16;call main_#t~malloc17.base, main_#t~malloc17.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc17.base, main_#t~malloc17.offset, main_~n~0.base, 4 + main_~n~0.offset, 4);call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem18.base, main_#t~mem18.offset, 4);havoc main_#t~mem18.base, main_#t~mem18.offset;call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem19.base, 4 + main_#t~mem19.offset, 4);havoc main_#t~mem19.base, main_#t~mem19.offset; 115#L557-2 [2018-11-18 09:46:18,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 09:46:18,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:18,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1652939883, now seen corresponding path program 1 times [2018-11-18 09:46:18,673 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:46:18,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:46:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:46:18,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:46:18,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:46:18,764 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:46:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:46:18,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:46:18,764 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. cyclomatic complexity: 21 Second operand 5 states. [2018-11-18 09:46:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:46:18,894 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-11-18 09:46:18,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:46:18,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2018-11-18 09:46:18,896 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 42 [2018-11-18 09:46:18,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 50 states and 68 transitions. [2018-11-18 09:46:18,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-18 09:46:18,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2018-11-18 09:46:18,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 68 transitions. [2018-11-18 09:46:18,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:46:18,899 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 68 transitions. [2018-11-18 09:46:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 68 transitions. [2018-11-18 09:46:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2018-11-18 09:46:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 09:46:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2018-11-18 09:46:18,904 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2018-11-18 09:46:18,904 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2018-11-18 09:46:18,904 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:46:18,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 61 transitions. [2018-11-18 09:46:18,904 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 38 [2018-11-18 09:46:18,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:46:18,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:46:18,905 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:46:18,905 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:46:18,905 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 217#L557-2 [2018-11-18 09:46:18,906 INFO L796 eck$LassoCheckResult]: Loop: 217#L557-2 assume true; 222#L544-1 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; 229#L547-2 assume true; 219#L546-1 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; 220#L546-2 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; 226#L546-4 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset; 258#L546-6 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 238#L552 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset; 239#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 216#L557 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;call main_#t~malloc17.base, main_#t~malloc17.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc17.base, main_#t~malloc17.offset, main_~n~0.base, 4 + main_~n~0.offset, 4);call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem18.base, main_#t~mem18.offset, 4);havoc main_#t~mem18.base, main_#t~mem18.offset;call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem19.base, 4 + main_#t~mem19.offset, 4);havoc main_#t~mem19.base, main_#t~mem19.offset; 217#L557-2 [2018-11-18 09:46:18,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,906 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-18 09:46:18,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:18,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1652937961, now seen corresponding path program 1 times [2018-11-18 09:46:18,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:46:18,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:18,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:18,961 INFO L82 PathProgramCache]: Analyzing trace with hash 551674969, now seen corresponding path program 1 times [2018-11-18 09:46:18,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:18,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:18,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:18,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:46:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:46:19,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:46:19,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:46:19,704 WARN L180 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2018-11-18 09:46:20,051 WARN L180 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-11-18 09:46:20,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:46:20,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:46:20,052 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. cyclomatic complexity: 22 Second operand 5 states. [2018-11-18 09:46:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:46:20,210 INFO L93 Difference]: Finished difference Result 139 states and 181 transitions. [2018-11-18 09:46:20,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:46:20,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 181 transitions. [2018-11-18 09:46:20,212 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 86 [2018-11-18 09:46:20,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 139 states and 181 transitions. [2018-11-18 09:46:20,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2018-11-18 09:46:20,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2018-11-18 09:46:20,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 181 transitions. [2018-11-18 09:46:20,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:46:20,214 INFO L705 BuchiCegarLoop]: Abstraction has 139 states and 181 transitions. [2018-11-18 09:46:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 181 transitions. [2018-11-18 09:46:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 55. [2018-11-18 09:46:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 09:46:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2018-11-18 09:46:20,217 INFO L728 BuchiCegarLoop]: Abstraction has 55 states and 73 transitions. [2018-11-18 09:46:20,218 INFO L608 BuchiCegarLoop]: Abstraction has 55 states and 73 transitions. [2018-11-18 09:46:20,218 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:46:20,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 73 transitions. [2018-11-18 09:46:20,218 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 48 [2018-11-18 09:46:20,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:46:20,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:46:20,219 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:46:20,219 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:46:20,219 INFO L794 eck$LassoCheckResult]: Stem: 454#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 431#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 416#L557-2 [2018-11-18 09:46:20,219 INFO L796 eck$LassoCheckResult]: Loop: 416#L557-2 assume true; 421#L544-1 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; 428#L547-2 assume true; 447#L546-1 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; 425#L546-2 assume !main_#t~short6; 426#L546-4 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset; 451#L546-6 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 462#L552 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset; 463#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 414#L557 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; 416#L557-2 [2018-11-18 09:46:20,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:20,220 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-11-18 09:46:20,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:20,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:20,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:20,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:20,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:20,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1595679657, now seen corresponding path program 1 times [2018-11-18 09:46:20,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:20,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:20,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:20,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:46:20,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:20,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:46:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash 608933273, now seen corresponding path program 1 times [2018-11-18 09:46:20,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:46:20,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:46:20,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:20,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:46:20,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:46:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:46:20,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:46:20 BoogieIcfgContainer [2018-11-18 09:46:20,545 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:46:20,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:46:20,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:46:20,545 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:46:20,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:46:18" (3/4) ... [2018-11-18 09:46:20,548 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-18 09:46:20,579 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_16d695de-a117-47c1-b11e-72c2eafd0071/bin-2019/uautomizer/witness.graphml [2018-11-18 09:46:20,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:46:20,579 INFO L168 Benchmark]: Toolchain (without parser) took 2922.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 955.4 MB in the beginning and 852.4 MB in the end (delta: 102.9 MB). Peak memory consumption was 233.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,580 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:46:20,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 955.4 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,581 INFO L168 Benchmark]: Boogie Preprocessor took 22.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,581 INFO L168 Benchmark]: RCFGBuilder took 337.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,581 INFO L168 Benchmark]: BuchiAutomizer took 2124.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 855.8 MB in the end (delta: 221.7 MB). Peak memory consumption was 221.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,582 INFO L168 Benchmark]: Witness Printer took 33.76 ms. Allocated memory is still 1.2 GB. Free memory was 855.8 MB in the beginning and 852.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:46:20,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 955.4 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 337.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2124.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 855.8 MB in the end (delta: 221.7 MB). Peak memory consumption was 221.7 MB. Max. memory is 11.5 GB. * Witness Printer took 33.76 ms. Allocated memory is still 1.2 GB. Free memory was 855.8 MB in the beginning and 852.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. 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 55 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 89 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 55 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 202 SDtfs, 97 SDslu, 267 SDs, 0 SdLazy, 213 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 544]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@22d31a75=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@40937e7c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@76b7527b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@15cfdb0f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1ba2d084=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@35deed51=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@97c52c2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@23d8edae=0, root=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4d4a8ae5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@22d31a75=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@475fa8d5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38ddd579=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@247fbb23=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43650c93=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@602b35aa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2b4e8c48=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4d4a8ae5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38ddd579=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@247fbb23=0, a=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@480fc2d4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@23d8edae=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@cf127ef=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43ef4690=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@76b7527b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b90ac5e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5e487ed3=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1ba2d084=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4f036561=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@480fc2d4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@35deed51=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2b4e8c48=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43fc42ee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9c98bc5=0, n=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d39c900=7, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d4a76dd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@17a22d1a=0, t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@ccde2e0=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43ef4690=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@cf127ef=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@35d6f79e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@15cfdb0f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@97c52c2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3248fc19=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4f036561=0, t=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@51895c47=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5514b50d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43fc42ee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3248fc19=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@35d6f79e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@86be4c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@77160180=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@6f7aae34=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4823053a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@ccde2e0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a50dcba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@40937e7c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b90ac5e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5e487ed3=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@86be4c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5514b50d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a50dcba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59226f57=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@602b35aa=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 544]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L541] EXPR, FCALL malloc(sizeof(*root)) [L541] struct TreeNode* root = malloc(sizeof(*root)), *n; [L542] FCALL root->left = ((void *)0) [L543] FCALL root->right = ((void *)0) Loop: [L544] COND TRUE __VERIFIER_nondet_int() [L545] n = root [L546] EXPR, FCALL n->left [L546] n->left && n->right [L546] COND FALSE !(n->left && n->right) [L552] EXPR, FCALL n->left [L552] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L557] EXPR, FCALL n->right [L557] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...