./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c77e93b9599e042c4501017444b3de5267565d01 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 08:55:04,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:04,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:04,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:04,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:04,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:04,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:04,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:04,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:04,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:04,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:04,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:04,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:04,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:04,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:04,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:04,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:04,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:04,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:04,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:04,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:04,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:04,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:04,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:04,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:04,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:04,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:04,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:04,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:04,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:04,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:04,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:04,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:04,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:04,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:04,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:04,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:04,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:04,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:04,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:04,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:04,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:55:04,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:04,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:04,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:04,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:04,874 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:04,875 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:55:04,875 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:55:04,875 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:55:04,875 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:55:04,875 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:55:04,875 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:55:04,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:04,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:04,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:04,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:04,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:04,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:04,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:55:04,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:55:04,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:55:04,877 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:04,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:04,877 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:55:04,877 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:04,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:55:04,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:04,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:04,879 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:55:04,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:04,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:04,879 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:55:04,880 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:55:04,880 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77e93b9599e042c4501017444b3de5267565d01 [2019-10-22 08:55:04,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:04,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:04,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:04,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:04,928 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:04,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2019-10-22 08:55:04,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/data/d5efabb0c/206f6d1779ed460ba713f368f3cae29b/FLAG1b1b5e956 [2019-10-22 08:55:05,422 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:05,423 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2019-10-22 08:55:05,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/data/d5efabb0c/206f6d1779ed460ba713f368f3cae29b/FLAG1b1b5e956 [2019-10-22 08:55:05,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/data/d5efabb0c/206f6d1779ed460ba713f368f3cae29b [2019-10-22 08:55:05,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:05,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:05,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:05,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:05,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:05,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:05" (1/1) ... [2019-10-22 08:55:05,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7063f609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:05, skipping insertion in model container [2019-10-22 08:55:05,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:05" (1/1) ... [2019-10-22 08:55:05,751 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:05,798 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:06,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:06,252 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:06,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:06,362 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:06,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06 WrapperNode [2019-10-22 08:55:06,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:06,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:06,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:06,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:06,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:06,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:06,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:06,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:06,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:06,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:06,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:06,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:06,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:06,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:55:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:55:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:55:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:55:06,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:06,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:07,040 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:07,040 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 08:55:07,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07 BoogieIcfgContainer [2019-10-22 08:55:07,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:07,042 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:55:07,043 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:55:07,047 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:55:07,047 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:07,048 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:55:05" (1/3) ... [2019-10-22 08:55:07,049 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@490df147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:07, skipping insertion in model container [2019-10-22 08:55:07,049 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:07,049 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (2/3) ... [2019-10-22 08:55:07,049 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@490df147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:07, skipping insertion in model container [2019-10-22 08:55:07,050 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:07,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07" (3/3) ... [2019-10-22 08:55:07,052 INFO L371 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr-2.i [2019-10-22 08:55:07,098 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:55:07,098 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:55:07,098 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:55:07,099 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:07,099 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:07,099 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:55:07,099 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:07,099 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:55:07,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states. [2019-10-22 08:55:07,141 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2019-10-22 08:55:07,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:07,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:07,148 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:07,149 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:07,149 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:55:07,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states. [2019-10-22 08:55:07,152 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2019-10-22 08:55:07,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:07,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:07,153 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:07,153 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:07,161 INFO L791 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 14#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 8#L557-2true [2019-10-22 08:55:07,161 INFO L793 eck$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.allocOnHeap(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 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 [2019-10-22 08:55:07,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-10-22 08:55:07,177 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3725039] [2019-10-22 08:55:07,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,323 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:07,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1235889697, now seen corresponding path program 1 times [2019-10-22 08:55:07,325 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342632327] [2019-10-22 08:55:07,325 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,325 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342632327] [2019-10-22 08:55:07,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:07,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:07,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571422438] [2019-10-22 08:55:07,374 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:55:07,375 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:55:07,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:55:07,390 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-10-22 08:55:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:07,398 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2019-10-22 08:55:07,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:07,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 62 transitions. [2019-10-22 08:55:07,403 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2019-10-22 08:55:07,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 37 states and 55 transitions. [2019-10-22 08:55:07,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2019-10-22 08:55:07,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-10-22 08:55:07,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2019-10-22 08:55:07,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:07,410 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2019-10-22 08:55:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2019-10-22 08:55:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 08:55:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:55:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2019-10-22 08:55:07,439 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2019-10-22 08:55:07,439 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2019-10-22 08:55:07,439 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:55:07,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 55 transitions. [2019-10-22 08:55:07,441 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2019-10-22 08:55:07,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:07,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:07,441 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:07,441 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:07,442 INFO L791 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.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 99#L557-2 [2019-10-22 08:55:07,442 INFO L793 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$(main_~n~0.base, main_~n~0.offset, 4); 119#L552 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 120#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$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 [2019-10-22 08:55:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,443 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2019-10-22 08:55:07,443 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698056546] [2019-10-22 08:55:07,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,495 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2066931060, now seen corresponding path program 1 times [2019-10-22 08:55:07,496 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,496 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358288492] [2019-10-22 08:55:07,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358288492] [2019-10-22 08:55:07,635 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:07,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:07,635 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434013618] [2019-10-22 08:55:07,635 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:55:07,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:07,636 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. cyclomatic complexity: 27 Second operand 5 states. [2019-10-22 08:55:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:07,837 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2019-10-22 08:55:07,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:07,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 65 transitions. [2019-10-22 08:55:07,841 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2019-10-22 08:55:07,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 65 transitions. [2019-10-22 08:55:07,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2019-10-22 08:55:07,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2019-10-22 08:55:07,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 65 transitions. [2019-10-22 08:55:07,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:07,845 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 65 transitions. [2019-10-22 08:55:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 65 transitions. [2019-10-22 08:55:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-10-22 08:55:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 08:55:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2019-10-22 08:55:07,853 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2019-10-22 08:55:07,853 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2019-10-22 08:55:07,853 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:55:07,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2019-10-22 08:55:07,857 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 33 [2019-10-22 08:55:07,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:07,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:07,857 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:07,858 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:07,858 INFO L791 eck$LassoCheckResult]: Stem: 223#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 206#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 190#L557-2 [2019-10-22 08:55:07,858 INFO L793 eck$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 [2019-10-22 08:55:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2019-10-22 08:55:07,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411781570] [2019-10-22 08:55:07,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,899 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2066932982, now seen corresponding path program 1 times [2019-10-22 08:55:07,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402680476] [2019-10-22 08:55:07,900 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,900 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,921 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1537472840, now seen corresponding path program 1 times [2019-10-22 08:55:07,922 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435148135] [2019-10-22 08:55:07,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,923 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435148135] [2019-10-22 08:55:07,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:07,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:07,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224721841] [2019-10-22 08:55:08,151 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2019-10-22 08:55:08,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:08,253 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 28 Second operand 5 states. [2019-10-22 08:55:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,592 INFO L93 Difference]: Finished difference Result 92 states and 137 transitions. [2019-10-22 08:55:08,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:08,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2019-10-22 08:55:08,594 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 60 [2019-10-22 08:55:08,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 92 states and 137 transitions. [2019-10-22 08:55:08,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2019-10-22 08:55:08,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-10-22 08:55:08,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 137 transitions. [2019-10-22 08:55:08,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:08,597 INFO L688 BuchiCegarLoop]: Abstraction has 92 states and 137 transitions. [2019-10-22 08:55:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 137 transitions. [2019-10-22 08:55:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 48. [2019-10-22 08:55:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 08:55:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 69 transitions. [2019-10-22 08:55:08,608 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2019-10-22 08:55:08,609 INFO L591 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2019-10-22 08:55:08,609 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:55:08,609 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 69 transitions. [2019-10-22 08:55:08,610 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 41 [2019-10-22 08:55:08,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:08,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:08,611 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:08,611 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:08,611 INFO L791 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 350#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 351#L557-2 [2019-10-22 08:55:08,611 INFO L793 eck$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 [2019-10-22 08:55:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,612 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2019-10-22 08:55:08,612 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538177229] [2019-10-22 08:55:08,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,652 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2124191284, now seen corresponding path program 1 times [2019-10-22 08:55:08,666 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171582805] [2019-10-22 08:55:08,667 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,667 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,689 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1480214538, now seen corresponding path program 1 times [2019-10-22 08:55:08,690 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977218332] [2019-10-22 08:55:08,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,725 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,866 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-10-22 08:55:09,106 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-10-22 08:55:09,147 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:55:09,198 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:55:09,199 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:55:09,199 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:119, output treesize:107 [2019-10-22 08:55:09,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:55:09 BoogieIcfgContainer [2019-10-22 08:55:09,296 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:55:09,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:09,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:09,297 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:09,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07" (3/4) ... [2019-10-22 08:55:09,300 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:55:09,337 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_78d39c62-4036-4de7-af6a-4a952816ecc7/bin/uautomizer/witness.graphml [2019-10-22 08:55:09,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:09,340 INFO L168 Benchmark]: Toolchain (without parser) took 3608.99 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 236.5 MB). Free memory was 942.4 MB in the beginning and 956.2 MB in the end (delta: -13.8 MB). Peak memory consumption was 222.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,340 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.95 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 236.5 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -273.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.47 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,341 INFO L168 Benchmark]: Boogie Preprocessor took 36.52 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,342 INFO L168 Benchmark]: RCFGBuilder took 576.93 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,342 INFO L168 Benchmark]: BuchiAutomizer took 2254.37 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 966.3 MB in the end (delta: 193.9 MB). Peak memory consumption was 193.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,343 INFO L168 Benchmark]: Witness Printer took 41.44 ms. Allocated memory is still 1.3 GB. Free memory was 966.3 MB in the beginning and 956.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,346 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 629.95 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 236.5 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -273.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.47 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.52 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 576.93 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2254.37 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 966.3 MB in the end (delta: 193.9 MB). Peak memory consumption was 193.9 MB. Max. memory is 11.5 GB. * Witness Printer took 41.44 ms. Allocated memory is still 1.3 GB. Free memory was 966.3 MB in the beginning and 956.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 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 2.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.3s. 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, 0.3s 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 {NULL=-2} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@164ad778=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3caa2e54=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@608267e0=0, NULL=-2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@764f20be=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@23b25ad1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@37d4ea95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@58eabbef=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@442694d3=0, root=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@36481062=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@164ad778=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@189a3664=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a8eb7e6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c996476=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f1a6caa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@678f44f6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6e39974a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@36481062=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a8eb7e6=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c996476=0, a=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3272f5cb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@442694d3=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2926768b=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2213e9dd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@608267e0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e144cd3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@620dcf4e=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@23b25ad1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@371b7a67=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3272f5cb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@37d4ea95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6e39974a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@782801b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fcde540=0, n=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41a6f9bb=27, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c59e922=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4bc0d188=0, t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@24a8bec3=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2213e9dd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2926768b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@48aba8a7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@764f20be=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@58eabbef=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5871de6a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@371b7a67=0, t=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@5bba033=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@770cca88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@782801b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5871de6a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@48aba8a7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1191e32a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6ca6118e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@1119e037=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@61d7ceac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@24a8bec3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@724fccf2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3caa2e54=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e144cd3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@620dcf4e=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1191e32a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@770cca88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@724fccf2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d286f2=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@678f44f6=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...