./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/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 eed6d14b3659ee573ecc9a025ea4a6cd48efa35c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-0cd3be1 [2018-11-28 12:53:58,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:53:58,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:53:58,712 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:53:58,712 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:53:58,712 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:53:58,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:53:58,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:53:58,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:53:58,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:53:58,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:53:58,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:53:58,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:53:58,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:53:58,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:53:58,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:53:58,720 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:53:58,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:53:58,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:53:58,724 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:53:58,725 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:53:58,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:53:58,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:53:58,727 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:53:58,727 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:53:58,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:53:58,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:53:58,729 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:53:58,730 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:53:58,731 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:53:58,731 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:53:58,731 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:53:58,731 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:53:58,732 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:53:58,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:53:58,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:53:58,733 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 12:53:58,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:53:58,744 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:53:58,745 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:53:58,745 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:53:58,745 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:53:58,745 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 12:53:58,745 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 12:53:58,745 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 12:53:58,746 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 12:53:58,746 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 12:53:58,746 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 12:53:58,746 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:53:58,746 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:53:58,746 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:53:58,746 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:53:58,747 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:53:58,748 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 12:53:58,748 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:53:58,748 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 12:53:58,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:53:58,748 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:53:58,748 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 12:53:58,748 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:53:58,749 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:53:58,749 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 12:53:58,749 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 12:53:58,750 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_a355d268-84dc-4384-8615-c3c2aeee3329/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 -> eed6d14b3659ee573ecc9a025ea4a6cd48efa35c [2018-11-28 12:53:58,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:53:58,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:53:58,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:53:58,786 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:53:58,786 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:53:58,787 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-11-28 12:53:58,834 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/data/fb0eda9f8/c07fc1cc1d194ddd89c15d287714ac96/FLAGbbdf307cf [2018-11-28 12:53:59,195 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:53:59,196 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-11-28 12:53:59,204 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/data/fb0eda9f8/c07fc1cc1d194ddd89c15d287714ac96/FLAGbbdf307cf [2018-11-28 12:53:59,589 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/data/fb0eda9f8/c07fc1cc1d194ddd89c15d287714ac96 [2018-11-28 12:53:59,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:53:59,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:53:59,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:53:59,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:53:59,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:53:59,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:53:59,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e65c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59, skipping insertion in model container [2018-11-28 12:53:59,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:53:59,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:53:59,631 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:53:59,853 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:53:59,863 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:53:59,942 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:53:59,973 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:53:59,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59 WrapperNode [2018-11-28 12:53:59,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:53:59,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:53:59,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:53:59,974 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:53:59,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:53:59,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:54:00,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:54:00,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:54:00,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:54:00,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... [2018-11-28 12:54:00,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:54:00,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:54:00,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:54:00,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:54:00,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/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 [2018-11-28 12:54:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:54:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:54:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:54:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 12:54:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 12:54:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:54:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:54:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:54:00,436 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:54:00,436 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-11-28 12:54:00,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:54:00 BoogieIcfgContainer [2018-11-28 12:54:00,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:54:00,437 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 12:54:00,437 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 12:54:00,440 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 12:54:00,440 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:54:00,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 12:53:59" (1/3) ... [2018-11-28 12:54:00,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6badaeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:54:00, skipping insertion in model container [2018-11-28 12:54:00,441 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:54:00,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:53:59" (2/3) ... [2018-11-28 12:54:00,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6badaeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:54:00, skipping insertion in model container [2018-11-28 12:54:00,442 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:54:00,442 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:54:00" (3/3) ... [2018-11-28 12:54:00,443 INFO L375 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-11-28 12:54:00,477 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:54:00,478 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 12:54:00,478 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 12:54:00,478 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 12:54:00,478 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:54:00,478 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:54:00,478 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 12:54:00,478 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:54:00,478 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 12:54:00,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states. [2018-11-28 12:54:00,504 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 12:54:00,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:54:00,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:54:00,508 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:54:00,508 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 12:54:00,508 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 12:54:00,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states. [2018-11-28 12:54:00,510 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 12:54:00,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:54:00,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:54:00,511 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:54:00,511 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 12:54:00,516 INFO L794 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 14#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 8#L557-2true [2018-11-28 12:54:00,517 INFO L796 eck$LassoCheckResult]: Loop: 8#L557-2true 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; 30#L547-2true assume !true; 40#L546-5true call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 17#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; 23#L552-2true call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 4#L557true assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset; 8#L557-2true [2018-11-28 12:54:00,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-28 12:54:00,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:00,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1235889697, now seen corresponding path program 1 times [2018-11-28 12:54:00,620 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:00,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:54:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:54:00,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:54:00,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:54:00,643 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 12:54:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:54:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:54:00,654 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 12:54:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:54:00,660 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2018-11-28 12:54:00,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:54:00,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 62 transitions. [2018-11-28 12:54:00,663 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 12:54:00,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 37 states and 55 transitions. [2018-11-28 12:54:00,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2018-11-28 12:54:00,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2018-11-28 12:54:00,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2018-11-28 12:54:00,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:54:00,667 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2018-11-28 12:54:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2018-11-28 12:54:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 12:54:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 12:54:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2018-11-28 12:54:00,688 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2018-11-28 12:54:00,688 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2018-11-28 12:54:00,688 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 12:54:00,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 55 transitions. [2018-11-28 12:54:00,689 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 12:54:00,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:54:00,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:54:00,689 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:54:00,690 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:54:00,690 INFO L794 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 114#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_#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); 99#L557-2 [2018-11-28 12:54:00,690 INFO L796 eck$LassoCheckResult]: Loop: 99#L557-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 104#L547-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 101#L546-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 102#L546-3 assume !main_#t~short6;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset; 112#L546-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 119#L552 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(8);call write~$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$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 120#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 98#L557 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset; 99#L557-2 [2018-11-28 12:54:00,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,690 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-28 12:54:00,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:00,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2066931060, now seen corresponding path program 1 times [2018-11-28 12:54:00,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:54:00,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:54:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:54:00,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:54:00,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:54:00,781 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 12:54:00,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:54:00,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:54:00,782 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. cyclomatic complexity: 27 Second operand 5 states. [2018-11-28 12:54:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:54:00,903 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2018-11-28 12:54:00,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:54:00,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 65 transitions. [2018-11-28 12:54:00,905 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-28 12:54:00,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 65 transitions. [2018-11-28 12:54:00,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-28 12:54:00,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-11-28 12:54:00,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 65 transitions. [2018-11-28 12:54:00,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:54:00,907 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 65 transitions. [2018-11-28 12:54:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 65 transitions. [2018-11-28 12:54:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-28 12:54:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 12:54:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2018-11-28 12:54:00,911 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2018-11-28 12:54:00,911 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2018-11-28 12:54:00,911 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 12:54:00,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2018-11-28 12:54:00,912 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 33 [2018-11-28 12:54:00,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:54:00,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:54:00,912 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:54:00,912 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:54:00,913 INFO L794 eck$LassoCheckResult]: Stem: 223#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 206#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 190#L557-2 [2018-11-28 12:54:00,913 INFO L796 eck$LassoCheckResult]: Loop: 190#L557-2 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; 196#L547-2 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; 192#L546-1 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; 193#L546-3 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; 226#L546-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 211#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; 212#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 189#L557 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset; 190#L557-2 [2018-11-28 12:54:00,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-28 12:54:00,913 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:00,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2066932982, now seen corresponding path program 1 times [2018-11-28 12:54:00,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:54:00,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:00,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1537472840, now seen corresponding path program 1 times [2018-11-28 12:54:00,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:00,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:00,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:00,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:54:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:54:01,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:54:01,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:54:01,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:54:01,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:54:01,178 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-11-28 12:54:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:54:01,382 INFO L93 Difference]: Finished difference Result 92 states and 137 transitions. [2018-11-28 12:54:01,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:54:01,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2018-11-28 12:54:01,384 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 60 [2018-11-28 12:54:01,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 92 states and 137 transitions. [2018-11-28 12:54:01,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2018-11-28 12:54:01,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2018-11-28 12:54:01,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 137 transitions. [2018-11-28 12:54:01,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:54:01,386 INFO L705 BuchiCegarLoop]: Abstraction has 92 states and 137 transitions. [2018-11-28 12:54:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 137 transitions. [2018-11-28 12:54:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 48. [2018-11-28 12:54:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 12:54:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 69 transitions. [2018-11-28 12:54:01,390 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2018-11-28 12:54:01,390 INFO L608 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2018-11-28 12:54:01,390 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 12:54:01,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 69 transitions. [2018-11-28 12:54:01,390 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 41 [2018-11-28 12:54:01,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:54:01,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:54:01,391 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:54:01,391 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:54:01,391 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 350#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 351#L557-2 [2018-11-28 12:54:01,391 INFO L796 eck$LassoCheckResult]: Loop: 351#L557-2 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; 366#L547-2 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; 338#L546-1 assume !main_#t~short6; 339#L546-3 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; 349#L546-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 379#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; 359#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 360#L557 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset; 351#L557-2 [2018-11-28 12:54:01,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-11-28 12:54:01,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:01,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:01,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:01,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:01,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:01,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:01,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2124191284, now seen corresponding path program 1 times [2018-11-28 12:54:01,405 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:01,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:01,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:01,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:54:01,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:01,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:54:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1480214538, now seen corresponding path program 1 times [2018-11-28 12:54:01,419 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:54:01,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:54:01,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:01,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:54:01,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:54:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:54:01,552 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-11-28 12:54:01,695 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 12:54:01,698 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 12:54:01,731 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 12:54:01,731 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:116, output treesize:104 [2018-11-28 12:54:01,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 12:54:01 BoogieIcfgContainer [2018-11-28 12:54:01,790 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 12:54:01,790 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:54:01,790 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:54:01,791 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:54:01,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:54:00" (3/4) ... [2018-11-28 12:54:01,793 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 12:54:01,819 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a355d268-84dc-4384-8615-c3c2aeee3329/bin-2019/uautomizer/witness.graphml [2018-11-28 12:54:01,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:54:01,819 INFO L168 Benchmark]: Toolchain (without parser) took 2227.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 950.6 MB in the beginning and 856.2 MB in the end (delta: 94.4 MB). Peak memory consumption was 200.8 MB. Max. memory is 11.5 GB. [2018-11-28 12:54:01,820 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:54:01,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:54:01,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.94 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. [2018-11-28 12:54:01,821 INFO L168 Benchmark]: Boogie Preprocessor took 27.95 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:54:01,821 INFO L168 Benchmark]: RCFGBuilder took 393.09 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:54:01,821 INFO L168 Benchmark]: BuchiAutomizer took 1353.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 858.9 MB in the end (delta: 195.2 MB). Peak memory consumption was 195.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:54:01,822 INFO L168 Benchmark]: Witness Printer took 28.70 ms. Allocated memory is still 1.1 GB. Free memory was 858.9 MB in the beginning and 856.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:54:01,824 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.94 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. * Boogie Preprocessor took 27.95 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 393.09 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1353.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 858.9 MB in the end (delta: 195.2 MB). Peak memory consumption was 195.2 MB. Max. memory is 11.5 GB. * Witness Printer took 28.70 ms. Allocated memory is still 1.1 GB. Free memory was 858.9 MB in the beginning and 856.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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 48 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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, 48 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 48 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 166 SDtfs, 71 SDslu, 179 SDs, 0 SdLazy, 191 SolverSat, 20 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@724f964a=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@334a1fe8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6d76b05e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2ba08323=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2c288db=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6e97b44=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4d05207a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@75e36382=0, root=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@d90a864=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@724f964a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e1d5a94=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65b814a1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69a63423=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b24d6b4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3302eb26=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4aa9a3c5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@d90a864=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65b814a1=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69a63423=0, a=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@b310343=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@75e36382=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4128c445=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@772b52ae=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6d76b05e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4aa3ab26=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@26dc4c46=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2c288db=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1a5a4cc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@b310343=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6e97b44=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4aa9a3c5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5de4d85=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2693974d=0, n=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@469a202f=21, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14c9c2f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4abd293e=0, t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@16ef6117=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@772b52ae=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4128c445=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43978188=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2ba08323=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4d05207a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6854c2b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1a5a4cc=0, t=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@21e52ee6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@58fa7d21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5de4d85=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6854c2b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43978188=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c89ee4e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5aa0a9f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@7cbd0c16=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6f2bf37=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@16ef6117=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3204efbf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@334a1fe8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4aa3ab26=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@26dc4c46=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c89ee4e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@58fa7d21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3204efbf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25883879=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3302eb26=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 544]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L541] struct TreeNode* root = malloc(sizeof(*root)), *n; [L542] root->left = ((void *)0) [L543] root->right = ((void *)0) Loop: [L544] COND TRUE __VERIFIER_nondet_int() [L545] n = root [L546] EXPR n->left [L546] n->left && n->right [L546] COND FALSE !(n->left && n->right) [L552] EXPR n->left [L552] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L557] EXPR 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...