./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 323a368457db0fbf1a75769ccf65710269e3f40c ...................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 02:22:57,879 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 02:22:57,880 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 02:22:57,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 02:22:57,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 02:22:57,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 02:22:57,889 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 02:22:57,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 02:22:57,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 02:22:57,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 02:22:57,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 02:22:57,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 02:22:57,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 02:22:57,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 02:22:57,894 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 02:22:57,895 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 02:22:57,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 02:22:57,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 02:22:57,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 02:22:57,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 02:22:57,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 02:22:57,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 02:22:57,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 02:22:57,902 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 02:22:57,902 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 02:22:57,903 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 02:22:57,903 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 02:22:57,904 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 02:22:57,904 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 02:22:57,905 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 02:22:57,905 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 02:22:57,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 02:22:57,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 02:22:57,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 02:22:57,906 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 02:22:57,906 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 02:22:57,906 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 02:22:57,914 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 02:22:57,914 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 02:22:57,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 02:22:57,915 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 02:22:57,916 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 02:22:57,916 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 02:22:57,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 02:22:57,916 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 02:22:57,916 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 02:22:57,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 02:22:57,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 02:22:57,917 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 02:22:57,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 02:22:57,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 02:22:57,917 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 02:22:57,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 02:22:57,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 02:22:57,917 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 02:22:57,918 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 02:22:57,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 02:22:57,918 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 02:22:57,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 02:22:57,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 02:22:57,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 02:22:57,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 02:22:57,919 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 02:22:57,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 02:22:57,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 02:22:57,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak 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(__VERIFIER_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 -> 323a368457db0fbf1a75769ccf65710269e3f40c [2018-11-10 02:22:57,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 02:22:57,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 02:22:57,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 02:22:57,956 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 02:22:57,957 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 02:22:57,957 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i [2018-11-10 02:22:58,003 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/data/2e465c43a/769fc790f22744a9aa4cf2c413910bcf/FLAG74fb14793 [2018-11-10 02:22:58,387 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 02:22:58,388 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i [2018-11-10 02:22:58,398 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/data/2e465c43a/769fc790f22744a9aa4cf2c413910bcf/FLAG74fb14793 [2018-11-10 02:22:58,412 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/data/2e465c43a/769fc790f22744a9aa4cf2c413910bcf [2018-11-10 02:22:58,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 02:22:58,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 02:22:58,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 02:22:58,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 02:22:58,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 02:22:58,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49867e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58, skipping insertion in model container [2018-11-10 02:22:58,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 02:22:58,461 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 02:22:58,660 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:22:58,667 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 02:22:58,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:22:58,729 INFO L193 MainTranslator]: Completed translation [2018-11-10 02:22:58,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58 WrapperNode [2018-11-10 02:22:58,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 02:22:58,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 02:22:58,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 02:22:58,730 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 02:22:58,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 02:22:58,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 02:22:58,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 02:22:58,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 02:22:58,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... [2018-11-10 02:22:58,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 02:22:58,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 02:22:58,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 02:22:58,832 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 02:22:58,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:22:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2018-11-10 02:22:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 02:22:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 02:22:58,870 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 02:22:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 02:22:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 02:22:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 02:22:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 02:22:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 02:22:58,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 02:22:59,539 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 02:22:59,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:22:59 BoogieIcfgContainer [2018-11-10 02:22:59,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 02:22:59,540 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 02:22:59,540 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 02:22:59,547 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 02:22:59,547 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:22:59" (1/1) ... [2018-11-10 02:22:59,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:22:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:22:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 32 states and 45 transitions. [2018-11-10 02:22:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2018-11-10 02:22:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 02:22:59,587 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:22:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:22:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:22:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:22:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 32 states and 42 transitions. [2018-11-10 02:22:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2018-11-10 02:22:59,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 02:22:59,677 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:22:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:22:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:22:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:22:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 38 states and 52 transitions. [2018-11-10 02:22:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2018-11-10 02:22:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 02:22:59,816 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:22:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:22:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:23:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:23:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 47 states and 69 transitions. [2018-11-10 02:23:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2018-11-10 02:23:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 02:23:00,278 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:23:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:23:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:23:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:23:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:23:00,347 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2018-11-10 02:23:00,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 02:23:00 ImpRootNode [2018-11-10 02:23:00,373 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 02:23:00,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 02:23:00,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 02:23:00,374 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 02:23:00,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:22:59" (3/4) ... [2018-11-10 02:23:00,377 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 02:23:00,421 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9b3a729e-e67a-4260-bdc3-f0aa17fd50f5/bin-2019/ukojak/witness.graphml [2018-11-10 02:23:00,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 02:23:00,422 INFO L168 Benchmark]: Toolchain (without parser) took 2007.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 957.6 MB in the beginning and 918.3 MB in the end (delta: 39.4 MB). Peak memory consumption was 193.5 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,424 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:23:00,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.08 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 930.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 930.7 MB in the beginning and 1.2 GB in the end (delta: -220.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,426 INFO L168 Benchmark]: Boogie Preprocessor took 26.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,426 INFO L168 Benchmark]: RCFGBuilder took 707.46 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: 97.2 MB). Peak memory consumption was 97.2 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,427 INFO L168 Benchmark]: CodeCheck took 833.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.3 MB in the end (delta: 124.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,427 INFO L168 Benchmark]: Witness Printer took 47.79 ms. Allocated memory is still 1.2 GB. Free memory was 926.3 MB in the beginning and 918.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-11-10 02:23:00,431 INFO L336 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, 103 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 52 SDslu, 56 SDs, 0 SdLazy, 170 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 2253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] EXPR, FCALL malloc(sizeof(struct node)) [L585] List a = (List) malloc(sizeof(struct node)); [L586] COND FALSE !(a == 0) [L587] List t; [L588] List p = a; [L589] FCALL a->h = 2 [L590] COND TRUE __VERIFIER_nondet_int() [L591] FCALL p->h = 1 [L592] EXPR, FCALL malloc(sizeof(struct node)) [L592] t = (List) malloc(sizeof(struct node)) [L593] COND FALSE !(t == 0) [L594] FCALL p->n = t [L595] EXPR, FCALL p->n [L595] p = p->n [L590] COND FALSE !(__VERIFIER_nondet_int()) [L597] FCALL p->h = 2 [L598] FCALL p->n = 0 [L599] p = a [L600] COND TRUE p!=0 [L601] CALL, EXPR p->h [L601] RET, EXPR p->h [L601] COND TRUE p->h != 2 [L602] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.08 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 930.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 930.7 MB in the beginning and 1.2 GB in the end (delta: -220.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 707.46 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: 97.2 MB). Peak memory consumption was 97.2 MB. Max. memory is 11.5 GB. * CodeCheck took 833.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.3 MB in the end (delta: 124.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.79 ms. Allocated memory is still 1.2 GB. Free memory was 926.3 MB in the beginning and 918.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...