./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/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 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 0.1.23-0cd3be1 [2018-11-28 11:32:39,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:32:39,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:32:39,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:32:39,203 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:32:39,204 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:32:39,204 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:32:39,206 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:32:39,207 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:32:39,207 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:32:39,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:32:39,208 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:32:39,209 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:32:39,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:32:39,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:32:39,211 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:32:39,211 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:32:39,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:32:39,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:32:39,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:32:39,215 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:32:39,216 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:32:39,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:32:39,218 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:32:39,218 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:32:39,218 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:32:39,219 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:32:39,220 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:32:39,220 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:32:39,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:32:39,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:32:39,222 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:32:39,222 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:32:39,222 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:32:39,222 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:32:39,223 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:32:39,223 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 11:32:39,233 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:32:39,234 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:32:39,234 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:32:39,235 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:32:39,235 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:32:39,235 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 11:32:39,235 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 11:32:39,235 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 11:32:39,235 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 11:32:39,235 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 11:32:39,236 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 11:32:39,236 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:32:39,236 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:32:39,236 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:32:39,236 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:32:39,236 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:32:39,236 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:32:39,237 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 11:32:39,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:32:39,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:32:39,238 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 11:32:39,238 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:32:39,238 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:32:39,238 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 11:32:39,239 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 11:32:39,239 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_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/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 -> c77e93b9599e042c4501017444b3de5267565d01 [2018-11-28 11:32:39,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:32:39,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:32:39,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:32:39,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:32:39,275 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:32:39,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i [2018-11-28 11:32:39,323 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/data/57859090a/409264463cd34630a11339a18fc3d212/FLAG50e1f5f05 [2018-11-28 11:32:39,711 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:32:39,712 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_true-unreach-call_false-termination.i [2018-11-28 11:32:39,721 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/data/57859090a/409264463cd34630a11339a18fc3d212/FLAG50e1f5f05 [2018-11-28 11:32:39,732 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/data/57859090a/409264463cd34630a11339a18fc3d212 [2018-11-28 11:32:39,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:32:39,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:32:39,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:32:39,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:32:39,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:32:39,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:32:39" (1/1) ... [2018-11-28 11:32:39,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739186d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:39, skipping insertion in model container [2018-11-28 11:32:39,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:32:39" (1/1) ... [2018-11-28 11:32:39,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:32:39,774 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:32:39,966 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:32:39,975 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:32:40,051 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:32:40,079 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:32:40,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40 WrapperNode [2018-11-28 11:32:40,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:32:40,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:32:40,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:32:40,080 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:32:40,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:32:40,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:32:40,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:32:40,117 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:32:40,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... [2018-11-28 11:32:40,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:32:40,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:32:40,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:32:40,146 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:32:40,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:32:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:32:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:32:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:32:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 11:32:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 11:32:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:32:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:32:40,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:32:40,543 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:32:40,543 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-11-28 11:32:40,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:32:40 BoogieIcfgContainer [2018-11-28 11:32:40,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:32:40,544 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 11:32:40,544 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 11:32:40,546 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 11:32:40,547 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:32:40,547 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:32:39" (1/3) ... [2018-11-28 11:32:40,547 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e1c4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:32:40, skipping insertion in model container [2018-11-28 11:32:40,547 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:32:40,547 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:40" (2/3) ... [2018-11-28 11:32:40,548 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e1c4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:32:40, skipping insertion in model container [2018-11-28 11:32:40,548 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:32:40,548 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:32:40" (3/3) ... [2018-11-28 11:32:40,549 INFO L375 chiAutomizerObserver]: Analyzing ICFG list_and_tree_cnstr_true-unreach-call_false-termination.i [2018-11-28 11:32:40,592 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:32:40,593 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 11:32:40,593 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 11:32:40,593 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 11:32:40,593 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:32:40,593 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:32:40,593 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 11:32:40,593 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:32:40,594 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 11:32:40,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states. [2018-11-28 11:32:40,624 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 11:32:40,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:32:40,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:32:40,630 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 11:32:40,630 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 11:32:40,631 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 11:32:40,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states. [2018-11-28 11:32:40,633 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 11:32:40,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:32:40,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:32:40,633 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 11:32:40,634 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 11:32:40,640 INFO L794 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 14#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 8#L557-2true [2018-11-28 11:32:40,641 INFO L796 eck$LassoCheckResult]: Loop: 8#L557-2true assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 30#L547-2true assume !true; 40#L546-5true call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 17#L552true assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 23#L552-2true call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 4#L557true assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 8#L557-2true [2018-11-28 11:32:40,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:40,646 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-28 11:32:40,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:40,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:40,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:40,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:40,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1235889697, now seen corresponding path program 1 times [2018-11-28 11:32:40,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:40,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:40,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:40,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:40,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:32:40,769 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 11:32:40,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 11:32:40,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:32:40,780 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 11:32:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:40,787 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2018-11-28 11:32:40,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:32:40,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 62 transitions. [2018-11-28 11:32:40,790 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 11:32:40,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 37 states and 55 transitions. [2018-11-28 11:32:40,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2018-11-28 11:32:40,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2018-11-28 11:32:40,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2018-11-28 11:32:40,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:32:40,795 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2018-11-28 11:32:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2018-11-28 11:32:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 11:32:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:32:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2018-11-28 11:32:40,815 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2018-11-28 11:32:40,815 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2018-11-28 11:32:40,815 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 11:32:40,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 55 transitions. [2018-11-28 11:32:40,816 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 30 [2018-11-28 11:32:40,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:32:40,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:32:40,816 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 11:32:40,817 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:40,817 INFO L794 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 114#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 99#L557-2 [2018-11-28 11:32:40,817 INFO L796 eck$LassoCheckResult]: Loop: 99#L557-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 104#L547-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 101#L546-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 102#L546-3 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 112#L546-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 119#L552 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(8);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset; 120#L552-2 call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 98#L557 assume !((main_#t~mem15.base == 0 && main_#t~mem15.offset == 0) && 0 != main_#t~nondet16);havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 99#L557-2 [2018-11-28 11:32:40,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-28 11:32:40,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:40,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:40,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:40,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:40,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2066931060, now seen corresponding path program 1 times [2018-11-28 11:32:40,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:40,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:40,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:32:40,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:40,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:40,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:32:40,921 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 11:32:40,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:32:40,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:32:40,921 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. cyclomatic complexity: 27 Second operand 5 states. [2018-11-28 11:32:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:41,039 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2018-11-28 11:32:41,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:32:41,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 65 transitions. [2018-11-28 11:32:41,041 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-28 11:32:41,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 65 transitions. [2018-11-28 11:32:41,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-28 11:32:41,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-11-28 11:32:41,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 65 transitions. [2018-11-28 11:32:41,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:32:41,043 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 65 transitions. [2018-11-28 11:32:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 65 transitions. [2018-11-28 11:32:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-28 11:32:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 11:32:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2018-11-28 11:32:41,047 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2018-11-28 11:32:41,047 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2018-11-28 11:32:41,048 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 11:32:41,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2018-11-28 11:32:41,048 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 33 [2018-11-28 11:32:41,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:32:41,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:32:41,049 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 11:32:41,049 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:41,049 INFO L794 eck$LassoCheckResult]: Stem: 223#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 206#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 190#L557-2 [2018-11-28 11:32:41,049 INFO L796 eck$LassoCheckResult]: Loop: 190#L557-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 196#L547-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 192#L546-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 193#L546-3 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 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~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 190#L557-2 [2018-11-28 11:32:41,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-28 11:32:41,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:41,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:41,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:41,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2066932982, now seen corresponding path program 1 times [2018-11-28 11:32:41,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:41,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:41,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:32:41,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1537472840, now seen corresponding path program 1 times [2018-11-28 11:32:41,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:41,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:41,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:41,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:41,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:41,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:32:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:32:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:32:41,334 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-11-28 11:32:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:41,543 INFO L93 Difference]: Finished difference Result 92 states and 137 transitions. [2018-11-28 11:32:41,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:32:41,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2018-11-28 11:32:41,545 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 60 [2018-11-28 11:32:41,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 92 states and 137 transitions. [2018-11-28 11:32:41,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2018-11-28 11:32:41,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2018-11-28 11:32:41,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 137 transitions. [2018-11-28 11:32:41,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:32:41,547 INFO L705 BuchiCegarLoop]: Abstraction has 92 states and 137 transitions. [2018-11-28 11:32:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 137 transitions. [2018-11-28 11:32:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 48. [2018-11-28 11:32:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 11:32:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 69 transitions. [2018-11-28 11:32:41,551 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2018-11-28 11:32:41,551 INFO L608 BuchiCegarLoop]: Abstraction has 48 states and 69 transitions. [2018-11-28 11:32:41,551 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 11:32:41,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 69 transitions. [2018-11-28 11:32:41,552 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 41 [2018-11-28 11:32:41,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:32:41,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:32:41,552 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 11:32:41,553 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:41,553 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 350#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~nondet16, main_#t~malloc17.base, main_#t~malloc17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~nondet3, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~short22, main_#t~mem26.base, main_#t~mem26.offset, main_#t~malloc27.base, main_#t~malloc27.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_#t~nondet28, main_#t~malloc32.base, main_#t~malloc32.offset, main_#t~mem33.base, main_#t~mem33.offset, main_#t~nondet31, main_#t~mem35.base, main_#t~mem35.offset, main_#t~mem34, main_#t~mem37.base, main_#t~mem37.offset, main_#t~mem36, main_#t~mem38, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~pred~0.base, main_~pred~0.offset, main_~a~0.base, main_~a~0.offset, main_~t~0.base, main_~t~0.offset, main_~p~0.base, main_~p~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.alloc(8);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4); 351#L557-2 [2018-11-28 11:32:41,553 INFO L796 eck$LassoCheckResult]: Loop: 351#L557-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 366#L547-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 338#L546-1 assume !main_#t~short6; 339#L546-3 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 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~mem15.base, main_#t~mem15.offset;havoc main_#t~nondet16; 351#L557-2 [2018-11-28 11:32:41,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:41,553 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-11-28 11:32:41,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:41,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:41,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:41,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:41,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2124191284, now seen corresponding path program 1 times [2018-11-28 11:32:41,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:41,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:41,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:32:41,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:41,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1480214538, now seen corresponding path program 1 times [2018-11-28 11:32:41,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:41,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:41,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:41,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:41,833 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:32:41,836 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:32:41,867 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 11:32:41,868 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:116, output treesize:104 [2018-11-28 11:32:41,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:32:41 BoogieIcfgContainer [2018-11-28 11:32:41,938 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 11:32:41,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:32:41,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:32:41,939 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:32:41,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:32:40" (3/4) ... [2018-11-28 11:32:41,942 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 11:32:41,978 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aa7fa83f-77e2-4cfe-af1d-98cc3703ebaa/bin-2019/uautomizer/witness.graphml [2018-11-28 11:32:41,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:32:41,979 INFO L168 Benchmark]: Toolchain (without parser) took 2243.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.6 MB in the beginning and 910.3 MB in the end (delta: 40.3 MB). Peak memory consumption was 199.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:41,980 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:32:41,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -193.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:41,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:41,981 INFO L168 Benchmark]: Boogie Preprocessor took 29.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:32:41,982 INFO L168 Benchmark]: RCFGBuilder took 397.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:41,982 INFO L168 Benchmark]: BuchiAutomizer took 1394.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.6 MB in the end (delta: 189.1 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:41,983 INFO L168 Benchmark]: Witness Printer took 39.41 ms. Allocated memory is still 1.2 GB. Free memory was 913.6 MB in the beginning and 910.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:41,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -193.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 397.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1394.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.6 MB in the end (delta: 189.1 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. * Witness Printer took 39.41 ms. Allocated memory is still 1.2 GB. Free memory was 913.6 MB in the beginning and 910.3 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 48 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 48 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 48 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 166 SDtfs, 71 SDslu, 179 SDs, 0 SdLazy, 191 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 544]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@9d7e2f7=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@636aeef2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2ef287a5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@11cf1b49=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@66f9d5c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7daebbe3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4aa89ce7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5046a69c=0, root=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@72e57d2f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@9d7e2f7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@772d9bc0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210df00e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56f44068=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bcaec29=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@daae4e4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@53e5fa28=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@72e57d2f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210df00e=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56f44068=0, a=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@48ad039d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5046a69c=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43f116fd=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@b7145ab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2ef287a5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@370979f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@c37f86f=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@66f9d5c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6ef7b372=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@48ad039d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7daebbe3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@53e5fa28=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@44f29a21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7185e8c9=0, n=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4658b691=21, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a0f023c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@f820c6d=0, t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4aab15f1=0, p=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@b7145ab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@43f116fd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@70c0aec4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@11cf1b49=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4aa89ce7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3adb670=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@6ef7b372=0, t=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@3e26e218=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3017c6cd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@44f29a21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3adb670=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@70c0aec4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18c5dd33=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@532bfd52=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@1e3f2ec9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@23200d21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4aab15f1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c1564c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@636aeef2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@370979f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@c37f86f=0, pred=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18c5dd33=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3017c6cd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c1564c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f7aa988=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@daae4e4=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...