./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/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_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/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 ce077c63676f801e14160b963d91b2f98c313404 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:55:04,114 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:55:04,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:55:04,132 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:55:04,132 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:55:04,133 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:55:04,134 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:55:04,135 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:55:04,137 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:55:04,138 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:55:04,139 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:55:04,142 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:55:04,143 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:55:04,143 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:55:04,144 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:55:04,144 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:55:04,144 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:55:04,145 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:55:04,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:55:04,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:55:04,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:55:04,148 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:55:04,149 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:55:04,150 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:55:04,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:55:04,151 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:55:04,152 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:55:04,152 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:55:04,153 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:55:04,153 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:55:04,153 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:55:04,154 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:55:04,154 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:55:04,154 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:55:04,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:55:04,156 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:55:04,156 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 08:55:04,175 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:55:04,175 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:55:04,177 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:55:04,177 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:55:04,177 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:55:04,178 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 08:55:04,178 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 08:55:04,178 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 08:55:04,179 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 08:55:04,179 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 08:55:04,179 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 08:55:04,179 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:55:04,179 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 08:55:04,180 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 08:55:04,181 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:55:04,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:55:04,181 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 08:55:04,181 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:55:04,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 08:55:04,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:55:04,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:55:04,182 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 08:55:04,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:55:04,185 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:55:04,185 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 08:55:04,186 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 08:55:04,187 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_59ce72ba-862b-4ddf-ba83-eec850d6e347/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 -> ce077c63676f801e14160b963d91b2f98c313404 [2018-11-18 08:55:04,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:55:04,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:55:04,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:55:04,236 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:55:04,237 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:55:04,237 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-11-18 08:55:04,283 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/data/802b5e620/a4c4d90291bb4d13b91dd99568d8300e/FLAG479193863 [2018-11-18 08:55:04,720 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:55:04,722 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-11-18 08:55:04,732 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/data/802b5e620/a4c4d90291bb4d13b91dd99568d8300e/FLAG479193863 [2018-11-18 08:55:04,746 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/data/802b5e620/a4c4d90291bb4d13b91dd99568d8300e [2018-11-18 08:55:04,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:55:04,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:55:04,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:55:04,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:55:04,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:55:04,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:55:04" (1/1) ... [2018-11-18 08:55:04,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0789ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:04, skipping insertion in model container [2018-11-18 08:55:04,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:55:04" (1/1) ... [2018-11-18 08:55:04,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:55:04,812 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:55:05,128 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:55:05,138 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:55:05,213 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:55:05,389 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:55:05,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05 WrapperNode [2018-11-18 08:55:05,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:55:05,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:55:05,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:55:05,391 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:55:05,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:55:05,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:55:05,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:55:05,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:55:05,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... [2018-11-18 08:55:05,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:55:05,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:55:05,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:55:05,478 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:55:05,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:55:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:55:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:55:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:55:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 08:55:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 08:55:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:55:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:55:05,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:55:06,258 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:55:06,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:06 BoogieIcfgContainer [2018-11-18 08:55:06,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:55:06,259 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 08:55:06,259 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 08:55:06,262 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 08:55:06,263 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:55:06,263 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:55:04" (1/3) ... [2018-11-18 08:55:06,264 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c59ebd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:55:06, skipping insertion in model container [2018-11-18 08:55:06,265 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:55:06,265 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:05" (2/3) ... [2018-11-18 08:55:06,265 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c59ebd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:55:06, skipping insertion in model container [2018-11-18 08:55:06,265 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:55:06,265 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:06" (3/3) ... [2018-11-18 08:55:06,267 INFO L375 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-11-18 08:55:06,305 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:55:06,306 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 08:55:06,306 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 08:55:06,306 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 08:55:06,306 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:55:06,306 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:55:06,306 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 08:55:06,306 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:55:06,307 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 08:55:06,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2018-11-18 08:55:06,337 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 08:55:06,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:55:06,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:55:06,344 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:55:06,344 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:55:06,345 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 08:55:06,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2018-11-18 08:55:06,347 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 08:55:06,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:55:06,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:55:06,348 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:55:06,348 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:55:06,353 INFO L794 eck$LassoCheckResult]: Stem: 22#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 31#L557-2true [2018-11-18 08:55:06,354 INFO L796 eck$LassoCheckResult]: Loop: 31#L557-2true assume true; 6#L544-1true assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 41#L547-2true assume !true; 24#L546-6true call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 9#L552true assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 14#L552-2true call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 27#L557true assume (main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16;call main_#t~malloc17.base, main_#t~malloc17.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc17.base, main_#t~malloc17.offset, main_~n~0.base, 4 + main_~n~0.offset, 4);call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem18.base, main_#t~mem18.offset, 4);havoc main_#t~mem18.base, main_#t~mem18.offset;call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem19.base, 4 + main_#t~mem19.offset, 4);havoc main_#t~mem19.base, main_#t~mem19.offset; 31#L557-2true [2018-11-18 08:55:06,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,359 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 08:55:06,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:06,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1143178396, now seen corresponding path program 1 times [2018-11-18 08:55:06,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:06,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:55:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:55:06,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:55:06,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:55:06,489 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 08:55:06,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:55:06,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:55:06,501 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-11-18 08:55:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:55:06,508 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2018-11-18 08:55:06,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:55:06,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 67 transitions. [2018-11-18 08:55:06,511 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 08:55:06,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 42 states and 57 transitions. [2018-11-18 08:55:06,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 08:55:06,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 08:55:06,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 57 transitions. [2018-11-18 08:55:06,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:55:06,518 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2018-11-18 08:55:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 57 transitions. [2018-11-18 08:55:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-18 08:55:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 08:55:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2018-11-18 08:55:06,545 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2018-11-18 08:55:06,546 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2018-11-18 08:55:06,546 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 08:55:06,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 57 transitions. [2018-11-18 08:55:06,547 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 35 [2018-11-18 08:55:06,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:55:06,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:55:06,549 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:55:06,549 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:55:06,549 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 115#L557-2 [2018-11-18 08:55:06,549 INFO L796 eck$LassoCheckResult]: Loop: 115#L557-2 assume true; 123#L544-1 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 128#L547-2 assume true; 117#L546-1 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 118#L546-2 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 124#L546-4 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 146#L546-6 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 135#L552 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 136#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 114#L557 assume (main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16;call main_#t~malloc17.base, main_#t~malloc17.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc17.base, main_#t~malloc17.offset, main_~n~0.base, 4 + main_~n~0.offset, 4);call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem18.base, main_#t~mem18.offset, 4);havoc main_#t~mem18.base, main_#t~mem18.offset;call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem19.base, 4 + main_#t~mem19.offset, 4);havoc main_#t~mem19.base, main_#t~mem19.offset; 115#L557-2 [2018-11-18 08:55:06,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,549 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 08:55:06,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:06,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1652939883, now seen corresponding path program 1 times [2018-11-18 08:55:06,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:55:06,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:55:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:55:06,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:55:06,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 08:55:06,675 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 08:55:06,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:55:06,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:55:06,676 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. cyclomatic complexity: 21 Second operand 5 states. [2018-11-18 08:55:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:55:06,877 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-11-18 08:55:06,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 08:55:06,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2018-11-18 08:55:06,879 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 42 [2018-11-18 08:55:06,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 50 states and 68 transitions. [2018-11-18 08:55:06,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-18 08:55:06,881 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2018-11-18 08:55:06,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 68 transitions. [2018-11-18 08:55:06,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:55:06,881 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 68 transitions. [2018-11-18 08:55:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 68 transitions. [2018-11-18 08:55:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2018-11-18 08:55:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 08:55:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2018-11-18 08:55:06,887 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2018-11-18 08:55:06,887 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2018-11-18 08:55:06,887 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 08:55:06,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 61 transitions. [2018-11-18 08:55:06,889 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 38 [2018-11-18 08:55:06,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:55:06,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:55:06,890 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:55:06,890 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:55:06,890 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 217#L557-2 [2018-11-18 08:55:06,890 INFO L796 eck$LassoCheckResult]: Loop: 217#L557-2 assume true; 222#L544-1 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 229#L547-2 assume true; 219#L546-1 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 220#L546-2 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 226#L546-4 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 258#L546-6 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 238#L552 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11; 239#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 216#L557 assume (main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16;call main_#t~malloc17.base, main_#t~malloc17.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc17.base, main_#t~malloc17.offset, main_~n~0.base, 4 + main_~n~0.offset, 4);call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem18.base, main_#t~mem18.offset, 4);havoc main_#t~mem18.base, main_#t~mem18.offset;call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem19.base, 4 + main_#t~mem19.offset, 4);havoc main_#t~mem19.base, main_#t~mem19.offset; 217#L557-2 [2018-11-18 08:55:06,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,891 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-18 08:55:06,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:06,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1652937961, now seen corresponding path program 1 times [2018-11-18 08:55:06,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:55:06,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:06,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash 551674969, now seen corresponding path program 1 times [2018-11-18 08:55:06,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:06,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:06,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:06,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:55:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:55:07,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:55:07,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 08:55:07,900 WARN L180 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2018-11-18 08:55:08,255 WARN L180 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-11-18 08:55:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:55:08,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:55:08,256 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. cyclomatic complexity: 22 Second operand 5 states. [2018-11-18 08:55:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:55:08,502 INFO L93 Difference]: Finished difference Result 139 states and 181 transitions. [2018-11-18 08:55:08,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:55:08,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 181 transitions. [2018-11-18 08:55:08,505 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 86 [2018-11-18 08:55:08,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 139 states and 181 transitions. [2018-11-18 08:55:08,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2018-11-18 08:55:08,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2018-11-18 08:55:08,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 181 transitions. [2018-11-18 08:55:08,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:55:08,508 INFO L705 BuchiCegarLoop]: Abstraction has 139 states and 181 transitions. [2018-11-18 08:55:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 181 transitions. [2018-11-18 08:55:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 55. [2018-11-18 08:55:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 08:55:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2018-11-18 08:55:08,511 INFO L728 BuchiCegarLoop]: Abstraction has 55 states and 73 transitions. [2018-11-18 08:55:08,512 INFO L608 BuchiCegarLoop]: Abstraction has 55 states and 73 transitions. [2018-11-18 08:55:08,512 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 08:55:08,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 73 transitions. [2018-11-18 08:55:08,512 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 48 [2018-11-18 08:55:08,512 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:55:08,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:55:08,513 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:55:08,513 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:55:08,513 INFO L794 eck$LassoCheckResult]: Stem: 454#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 431#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 416#L557-2 [2018-11-18 08:55:08,513 INFO L796 eck$LassoCheckResult]: Loop: 416#L557-2 assume true; 421#L544-1 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 428#L547-2 assume true; 447#L546-1 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 425#L546-2 assume !main_#t~short6; 426#L546-4 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 451#L546-6 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 462#L552 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~mem10.base, main_#t~mem10.offset;havoc main_#t~nondet11; 463#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 414#L557 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 416#L557-2 [2018-11-18 08:55:08,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:08,514 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-11-18 08:55:08,514 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:08,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:08,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:08,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:08,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:08,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1595679657, now seen corresponding path program 1 times [2018-11-18 08:55:08,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:08,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:08,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:08,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:55:08,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:08,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:55:08,541 INFO L82 PathProgramCache]: Analyzing trace with hash 608933273, now seen corresponding path program 1 times [2018-11-18 08:55:08,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:55:08,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:55:08,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:08,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:55:08,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:55:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:55:08,690 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-11-18 08:55:08,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:55:08 BoogieIcfgContainer [2018-11-18 08:55:08,901 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 08:55:08,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:55:08,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:55:08,901 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:55:08,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:06" (3/4) ... [2018-11-18 08:55:08,904 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-18 08:55:08,937 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_59ce72ba-862b-4ddf-ba83-eec850d6e347/bin-2019/uautomizer/witness.graphml [2018-11-18 08:55:08,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:55:08,938 INFO L168 Benchmark]: Toolchain (without parser) took 4188.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 956.4 MB in the beginning and 924.4 MB in the end (delta: 32.1 MB). Peak memory consumption was 245.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:55:08,938 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:55:08,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 956.4 MB in the beginning and 1.2 GB in the end (delta: -240.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:55:08,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:55:08,940 INFO L168 Benchmark]: Boogie Preprocessor took 37.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:55:08,940 INFO L168 Benchmark]: RCFGBuilder took 786.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:55:08,941 INFO L168 Benchmark]: BuchiAutomizer took 2641.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 927.6 MB in the end (delta: 225.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:55:08,941 INFO L168 Benchmark]: Witness Printer took 36.17 ms. Allocated memory is still 1.2 GB. Free memory was 927.6 MB in the beginning and 924.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:55:08,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 639.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 956.4 MB in the beginning and 1.2 GB in the end (delta: -240.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 786.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2641.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 927.6 MB in the end (delta: 225.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. * Witness Printer took 36.17 ms. Allocated memory is still 1.2 GB. Free memory was 927.6 MB in the beginning and 924.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 55 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. 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, 89 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 55 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 202 SDtfs, 97 SDslu, 267 SDs, 0 SdLazy, 213 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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 {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@dc935e3=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@666cace0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6090c000=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5435331a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6910b1d5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@523d1830=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@55580fb5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@618d29c4=0, root=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@36e8b6c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@dc935e3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45426915=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@167fd2a0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fd9cfaf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ba6d112=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@36fbb904=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b569d52=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@36e8b6c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@167fd2a0=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fd9cfaf=0, a=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@63480a4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@618d29c4=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@18c80bb9=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2d1c3d3a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6090c000=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f619016=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@aa7583f=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6910b1d5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7603976f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@63480a4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@523d1830=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b569d52=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@606ef459=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6834b328=0, n=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39be01c3=7, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50f1f999=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2988240=0, t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@b989e8e=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2d1c3d3a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@18c80bb9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2b4e149a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5435331a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@55580fb5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22029d70=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7603976f=0, t=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@2cbd2e65=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@702deaee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@606ef459=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22029d70=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2b4e149a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@745e582f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@269f73fa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@b24c037=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4525fcff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@b989e8e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56e84c4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@666cace0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f619016=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@aa7583f=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@745e582f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@702deaee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56e84c4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f91f663=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@36fbb904=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 544]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L541] EXPR, FCALL malloc(sizeof(*root)) [L541] struct TreeNode* root = malloc(sizeof(*root)), *n; [L542] FCALL root->left = ((void *)0) [L543] FCALL root->right = ((void *)0) Loop: [L544] COND TRUE __VERIFIER_nondet_int() [L545] n = root [L546] EXPR, FCALL n->left [L546] n->left && n->right [L546] COND FALSE !(n->left && n->right) [L552] EXPR, FCALL n->left [L552] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L557] EXPR, FCALL n->right [L557] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...