./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 23:16:02,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:16:02,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:16:02,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:16:02,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:16:02,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:16:02,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:16:02,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:16:02,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:16:02,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:16:02,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:16:02,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:16:02,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:16:02,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:16:02,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:16:02,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:16:02,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:16:02,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:16:02,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:16:02,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:16:02,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:16:02,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:16:02,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:16:02,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:16:02,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:16:02,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:16:02,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:16:02,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:16:02,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:16:02,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:16:02,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:16:02,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:16:02,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:16:02,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:16:02,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:16:02,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:16:02,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:16:02,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:16:02,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:16:02,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:16:02,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:16:02,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-22 23:16:02,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:16:02,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:16:02,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 23:16:02,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-22 23:16:02,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:16:02,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:16:02,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:16:02,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 23:16:02,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:16:02,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 23:16:02,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:16:02,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:16:02,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:16:02,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:16:02,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 23:16:02,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:16:02,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:16:02,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:16:02,877 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-22 23:16:02,877 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-22 23:16:02,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:16:02,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:16:02,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:16:02,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:16:02,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:16:02,878 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-22 23:16:02,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:16:02,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:16:02,879 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_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-11-22 23:16:03,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:16:03,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:16:03,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:16:03,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:16:03,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:16:03,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-11-22 23:16:03,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/data/701199268/00d5e50441bd4395b5e367b744a61cb9/FLAGbd7df53c8 [2021-11-22 23:16:03,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:16:03,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-11-22 23:16:03,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/data/701199268/00d5e50441bd4395b5e367b744a61cb9/FLAGbd7df53c8 [2021-11-22 23:16:04,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/data/701199268/00d5e50441bd4395b5e367b744a61cb9 [2021-11-22 23:16:04,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:16:04,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:16:04,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:16:04,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:16:04,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:16:04,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b07ca9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04, skipping insertion in model container [2021-11-22 23:16:04,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:16:04,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:16:04,581 WARN L230 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_511c2500-c8a1-4d91-ad63-0e6da2dd794c/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-11-22 23:16:04,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:16:04,593 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:16:04,647 WARN L230 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_511c2500-c8a1-4d91-ad63-0e6da2dd794c/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-11-22 23:16:04,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:16:04,679 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:16:04,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04 WrapperNode [2021-11-22 23:16:04,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:16:04,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:16:04,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:16:04,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:16:04,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,737 INFO L137 Inliner]: procedures = 124, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2021-11-22 23:16:04,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:16:04,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:16:04,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:16:04,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:16:04,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:16:04,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:16:04,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:16:04,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:16:04,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:04" (1/1) ... [2021-11-22 23:16:04,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:16:04,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-22 23:16:04,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-22 23:16:04,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-22 23:16:04,900 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-22 23:16:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-22 23:16:04,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:16:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:16:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:16:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:16:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:16:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:16:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:16:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:16:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:16:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:16:05,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:16:05,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:16:05,069 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-22 23:16:05,301 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:16:05,342 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:16:05,344 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-22 23:16:05,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:05 BoogieIcfgContainer [2021-11-22 23:16:05,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:16:05,349 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-22 23:16:05,350 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-22 23:16:05,360 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-22 23:16:05,361 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:05" (1/1) ... [2021-11-22 23:16:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:16:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 30 states and 43 transitions. [2021-11-22 23:16:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2021-11-22 23:16:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 23:16:05,434 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:05,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:16:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 30 states and 38 transitions. [2021-11-22 23:16:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-11-22 23:16:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 23:16:05,589 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:05,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 23:16:05,660 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 23:16:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 23:16:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 23:16:05,806 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 23:16:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 23:16:05,865 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-11-22 23:16:05,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.11 11:16:05 ImpRootNode [2021-11-22 23:16:05,914 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-22 23:16:05,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 23:16:05,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 23:16:05,917 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 23:16:05,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:05" (3/4) ... [2021-11-22 23:16:05,919 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 23:16:06,013 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-22 23:16:06,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 23:16:06,020 INFO L158 Benchmark]: Toolchain (without parser) took 1909.31ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 48.2MB in the beginning and 88.7MB in the end (delta: -40.5MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,021 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 66.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 23:16:06,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.25ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 48.0MB in the beginning and 81.2MB in the end (delta: -33.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.32ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 78.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,024 INFO L158 Benchmark]: Boogie Preprocessor took 56.45ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,025 INFO L158 Benchmark]: RCFGBuilder took 552.48ms. Allocated memory is still 113.2MB. Free memory was 77.5MB in the beginning and 62.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,025 INFO L158 Benchmark]: CodeCheck took 565.94ms. Allocated memory is still 113.2MB. Free memory was 62.2MB in the beginning and 43.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,026 INFO L158 Benchmark]: Witness Printer took 103.30ms. Allocated memory is still 113.2MB. Free memory was 43.4MB in the beginning and 88.7MB in the end (delta: -45.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-11-22 23:16:06,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 568]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 66.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.25ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 48.0MB in the beginning and 81.2MB in the end (delta: -33.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.32ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 78.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.45ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.48ms. Allocated memory is still 113.2MB. Free memory was 77.5MB in the beginning and 62.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 565.94ms. Allocated memory is still 113.2MB. Free memory was 62.2MB in the beginning and 43.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 103.30ms. Allocated memory is still 113.2MB. Free memory was 43.4MB in the beginning and 88.7MB in the end (delta: -45.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-22 23:16:06,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_511c2500-c8a1-4d91-ad63-0e6da2dd794c/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE