./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/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 d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 ................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-09 00:35:16,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:35:16,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:35:16,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:35:16,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:35:16,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:35:16,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:35:16,949 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:35:16,950 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:35:16,950 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:35:16,951 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:35:16,951 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:35:16,951 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:35:16,952 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:35:16,952 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:35:16,953 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:35:16,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:35:16,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:35:16,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:35:16,955 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:35:16,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:35:16,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:35:16,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:35:16,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:35:16,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:35:16,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:35:16,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:35:16,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:35:16,959 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:35:16,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:35:16,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:35:16,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:35:16,960 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:35:16,960 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:35:16,961 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:35:16,961 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:35:16,961 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-09 00:35:16,968 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:35:16,968 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:35:16,969 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:35:16,969 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-09 00:35:16,969 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 00:35:16,969 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 00:35:16,970 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:35:16,970 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:35:16,971 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 00:35:16,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 00:35:16,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:35:16,971 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 00:35:16,972 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:35:16,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 00:35:16,972 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_5de59047-1a94-4029-910e-02de80611d13/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 -> d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 [2018-12-09 00:35:16,988 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:35:16,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:35:16,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:35:16,998 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:35:16,998 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:35:16,998 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-12-09 00:35:17,034 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/data/f3fa6fafa/4b8025f8b7b54c79b74e7604146c87b9/FLAGaf583dcf3 [2018-12-09 00:35:17,504 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:35:17,504 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-12-09 00:35:17,510 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/data/f3fa6fafa/4b8025f8b7b54c79b74e7604146c87b9/FLAGaf583dcf3 [2018-12-09 00:35:17,521 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/data/f3fa6fafa/4b8025f8b7b54c79b74e7604146c87b9 [2018-12-09 00:35:17,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:35:17,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:35:17,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:35:17,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:35:17,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:35:17,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115e7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17, skipping insertion in model container [2018-12-09 00:35:17,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:35:17,563 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:35:17,738 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:35:17,743 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:35:17,800 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:35:17,830 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:35:17,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17 WrapperNode [2018-12-09 00:35:17,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:35:17,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:35:17,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:35:17,832 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:35:17,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:35:17,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:35:17,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:35:17,857 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:35:17,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... [2018-12-09 00:35:17,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:35:17,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:35:17,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:35:17,875 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:35:17,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/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 [2018-12-09 00:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 00:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 00:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 00:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 00:35:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:35:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:35:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:35:18,214 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:35:18,214 INFO L280 CfgBuilder]: Removed 15 assue(true) statements. [2018-12-09 00:35:18,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:35:18 BoogieIcfgContainer [2018-12-09 00:35:18,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:35:18,215 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 00:35:18,215 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 00:35:18,221 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 00:35:18,221 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:35:18" (1/1) ... [2018-12-09 00:35:18,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:35:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 27 states and 43 transitions. [2018-12-09 00:35:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2018-12-09 00:35:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 00:35:18,249 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2018-12-09 00:35:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2018-12-09 00:35:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 00:35:18,336 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2018-12-09 00:35:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2018-12-09 00:35:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 00:35:18,434 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 32 states and 45 transitions. [2018-12-09 00:35:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2018-12-09 00:35:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 00:35:18,792 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 37 states and 53 transitions. [2018-12-09 00:35:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 53 transitions. [2018-12-09 00:35:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 00:35:19,377 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 39 states and 54 transitions. [2018-12-09 00:35:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2018-12-09 00:35:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 00:35:19,606 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2018-12-09 00:35:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2018-12-09 00:35:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 00:35:20,155 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2018-12-09 00:35:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2018-12-09 00:35:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 00:35:21,506 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:24,439 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-09 00:35:28,642 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-12-09 00:35:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 51 states and 80 transitions. [2018-12-09 00:35:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 80 transitions. [2018-12-09 00:35:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 00:35:29,259 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 00:35:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 52 states and 81 transitions. [2018-12-09 00:35:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2018-12-09 00:35:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 00:35:30,234 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:35:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:35:35,164 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-12-09 00:35:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 00:35:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 66 states and 110 transitions. [2018-12-09 00:35:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 110 transitions. [2018-12-09 00:35:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 00:35:37,576 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 00:35:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:35:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:35:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:35:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:35:37,720 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2018-12-09 00:35:37,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 12:35:37 ImpRootNode [2018-12-09 00:35:37,740 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 00:35:37,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:35:37,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:35:37,741 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:35:37,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:35:18" (3/4) ... [2018-12-09 00:35:37,743 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 00:35:37,776 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5de59047-1a94-4029-910e-02de80611d13/bin-2019/ukojak/witness.graphml [2018-12-09 00:35:37,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:35:37,777 INFO L168 Benchmark]: Toolchain (without parser) took 20253.57 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 249.6 MB). Free memory was 950.7 MB in the beginning and 1.2 GB in the end (delta: -279.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:35:37,777 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:35:37,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.7 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2018-12-09 00:35:37,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 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. [2018-12-09 00:35:37,779 INFO L168 Benchmark]: Boogie Preprocessor took 17.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 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. [2018-12-09 00:35:37,779 INFO L168 Benchmark]: RCFGBuilder took 339.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:35:37,779 INFO L168 Benchmark]: CodeCheck took 19525.63 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 134.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -171.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:35:37,780 INFO L168 Benchmark]: Witness Printer took 35.83 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:35:37,782 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 1 procedures, 33 locations, 4 error locations. UNSAFE Result, 19.4s OverallTime, 11 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7232 SDtfs, 6474 SDslu, 6916 SDs, 0 SdLazy, 18222 SolverSat, 5048 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1269 GetRequests, 1032 SyntacticMatches, 29 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17834 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 38682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 7/29 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: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1031] EXPR end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) [L1039] EXPR end->colour [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.7 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 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. * Boogie Preprocessor took 17.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 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 339.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. * CodeCheck took 19525.63 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 134.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -171.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 35.83 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...