./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e585ced56eb20cb86f32939eb5fca0773c487edc ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:24:56,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:24:56,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:24:56,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:24:56,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:24:56,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:24:56,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:24:56,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:24:56,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:24:56,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:24:56,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:24:56,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:24:56,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:24:56,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:24:56,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:24:56,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:24:56,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:24:56,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:24:56,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:24:56,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:24:56,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:24:56,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:24:56,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:24:56,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:24:56,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:24:56,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:24:56,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:24:56,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:24:56,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:24:56,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:24:56,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:24:56,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:24:56,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:24:56,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:24:56,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:24:56,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:24:56,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:24:56,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:24:56,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:24:56,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:24:56,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:24:56,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:24:56,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:24:56,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:24:56,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:24:56,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:24:56,826 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:24:56,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:24:56,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:24:56,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:24:56,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:24:56,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:24:56,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:24:56,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:24:56,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:24:56,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:24:56,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:24:56,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:24:56,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:24:56,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:56,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:24:56,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:24:56,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:24:56,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:24:56,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e585ced56eb20cb86f32939eb5fca0773c487edc [2021-10-11 00:24:57,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:24:57,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:24:57,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:24:57,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:24:57,185 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:24:57,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2021-10-11 00:24:57,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/data/d0414e6de/3006d73bcaab466fa665fdb83af4eb28/FLAGff43d598f [2021-10-11 00:24:57,919 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:24:57,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i [2021-10-11 00:24:57,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/data/d0414e6de/3006d73bcaab466fa665fdb83af4eb28/FLAGff43d598f [2021-10-11 00:24:58,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/data/d0414e6de/3006d73bcaab466fa665fdb83af4eb28 [2021-10-11 00:24:58,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:24:58,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:24:58,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:58,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:24:58,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:24:58,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46670584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58, skipping insertion in model container [2021-10-11 00:24:58,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:24:58,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:24:58,702 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2021-10-11 00:24:58,708 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2021-10-11 00:24:58,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2021-10-11 00:24:58,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:58,728 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:24:58,778 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2021-10-11 00:24:58,780 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2021-10-11 00:24:58,782 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2021-10-11 00:24:58,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:58,879 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:24:58,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58 WrapperNode [2021-10-11 00:24:58,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:58,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:58,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:24:58,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:24:58,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:58,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:24:58,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:24:58,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:24:58,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:59,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:59,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:59,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:59,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:59,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:59,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:24:59,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:24:59,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:24:59,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:24:59,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:24:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:24:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:24:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 00:24:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:24:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 00:24:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:24:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:24:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:24:59,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:24:59,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:24:59,523 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:24:59,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:59 BoogieIcfgContainer [2021-10-11 00:24:59,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:24:59,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:24:59,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:24:59,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:24:59,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:24:58" (1/3) ... [2021-10-11 00:24:59,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e567635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:59, skipping insertion in model container [2021-10-11 00:24:59,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (2/3) ... [2021-10-11 00:24:59,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e567635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:59, skipping insertion in model container [2021-10-11 00:24:59,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:59" (3/3) ... [2021-10-11 00:24:59,548 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2021-10-11 00:24:59,568 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:24:59,571 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:24:59,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:24:59,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:24:59,656 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:24:59,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:24:59,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:24:59,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:24:59,657 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:24:59,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:24:59,658 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:24:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-10-11 00:24:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:24:59,688 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:59,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:24:59,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash 890892102, now seen corresponding path program 1 times [2021-10-11 00:24:59,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:59,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913767864] [2021-10-11 00:24:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:59,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913767864] [2021-10-11 00:24:59,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:59,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:59,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509098197] [2021-10-11 00:24:59,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:24:59,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:00,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:25:00,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:25:00,009 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-10-11 00:25:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:00,039 INFO L93 Difference]: Finished difference Result 64 states and 100 transitions. [2021-10-11 00:25:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:25:00,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 00:25:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:00,063 INFO L225 Difference]: With dead ends: 64 [2021-10-11 00:25:00,066 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 00:25:00,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:25:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 00:25:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 00:25:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 00:25:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-10-11 00:25:00,117 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 6 [2021-10-11 00:25:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:00,118 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-10-11 00:25:00,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:25:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-10-11 00:25:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:25:00,119 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:00,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:00,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:25:00,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1806883023, now seen corresponding path program 1 times [2021-10-11 00:25:00,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:00,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479024073] [2021-10-11 00:25:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479024073] [2021-10-11 00:25:00,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:00,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:25:00,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489558922] [2021-10-11 00:25:00,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:25:00,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:25:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:25:00,294 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2021-10-11 00:25:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:00,430 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2021-10-11 00:25:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:25:00,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:25:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:00,433 INFO L225 Difference]: With dead ends: 42 [2021-10-11 00:25:00,434 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:25:00,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:25:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:25:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-10-11 00:25:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 00:25:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-11 00:25:00,446 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2021-10-11 00:25:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:00,447 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-11 00:25:00,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:25:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-11 00:25:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:25:00,449 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:00,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:00,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:25:00,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:00,451 INFO L82 PathProgramCache]: Analyzing trace with hash 706691337, now seen corresponding path program 1 times [2021-10-11 00:25:00,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:00,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825302492] [2021-10-11 00:25:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:00,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825302492] [2021-10-11 00:25:00,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:00,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:25:00,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424083670] [2021-10-11 00:25:00,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:25:00,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:25:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:25:00,555 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 3 states. [2021-10-11 00:25:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:00,602 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2021-10-11 00:25:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:25:00,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 00:25:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:00,607 INFO L225 Difference]: With dead ends: 71 [2021-10-11 00:25:00,608 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 00:25:00,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:25:00,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 00:25:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2021-10-11 00:25:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:25:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-10-11 00:25:00,617 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 10 [2021-10-11 00:25:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:00,618 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-10-11 00:25:00,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:25:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-10-11 00:25:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:25:00,619 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:00,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:00,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:25:00,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash -84804677, now seen corresponding path program 1 times [2021-10-11 00:25:00,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:00,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739459866] [2021-10-11 00:25:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:25:00,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:25:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:25:00,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:25:00,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:25:00,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:25:00,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:25:00,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:25:00 BoogieIcfgContainer [2021-10-11 00:25:00,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:25:00,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:25:00,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:25:00,761 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:25:00,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:59" (3/4) ... [2021-10-11 00:25:00,764 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:25:00,810 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206b1307-558f-42cb-aa52-6d0c7754943f/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:25:00,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:25:00,813 INFO L168 Benchmark]: Toolchain (without parser) took 2575.56 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.9 MB in the beginning and 52.3 MB in the end (delta: 17.6 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:00,813 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 100.7 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:00,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.93 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.9 MB in the beginning and 85.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:00,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.77 ms. Allocated memory is still 121.6 MB. Free memory was 85.2 MB in the beginning and 83.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:00,815 INFO L168 Benchmark]: Boogie Preprocessor took 39.22 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 81.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:00,816 INFO L168 Benchmark]: RCFGBuilder took 498.66 ms. Allocated memory is still 121.6 MB. Free memory was 81.5 MB in the beginning and 59.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:00,816 INFO L168 Benchmark]: TraceAbstraction took 1233.14 ms. Allocated memory is still 121.6 MB. Free memory was 58.9 MB in the beginning and 54.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:00,817 INFO L168 Benchmark]: Witness Printer took 50.24 ms. Allocated memory is still 121.6 MB. Free memory was 54.4 MB in the beginning and 52.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:00,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 100.7 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 628.93 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.9 MB in the beginning and 85.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.77 ms. Allocated memory is still 121.6 MB. Free memory was 85.2 MB in the beginning and 83.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.22 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 81.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 498.66 ms. Allocated memory is still 121.6 MB. Free memory was 81.5 MB in the beginning and 59.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1233.14 ms. Allocated memory is still 121.6 MB. Free memory was 58.9 MB in the beginning and 54.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 50.24 ms. Allocated memory is still 121.6 MB. Free memory was 54.4 MB in the beginning and 52.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1034]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) [L1032] EXPR x->data [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 44 SDslu, 49 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...