./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular_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_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/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 95b20088216028e3d05e3cb41d4ed5c20af6a751 ............................................................................................................................................................................................................................................................. 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 [2018-12-08 20:30:10,952 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 20:30:10,953 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 20:30:10,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 20:30:10,961 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 20:30:10,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 20:30:10,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 20:30:10,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 20:30:10,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 20:30:10,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 20:30:10,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 20:30:10,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 20:30:10,964 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 20:30:10,965 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 20:30:10,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 20:30:10,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 20:30:10,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 20:30:10,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 20:30:10,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 20:30:10,969 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 20:30:10,969 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 20:30:10,970 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 20:30:10,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 20:30:10,971 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 20:30:10,971 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 20:30:10,972 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 20:30:10,972 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 20:30:10,973 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 20:30:10,973 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 20:30:10,973 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 20:30:10,974 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 20:30:10,974 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 20:30:10,974 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 20:30:10,974 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 20:30:10,975 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 20:30:10,975 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 20:30:10,975 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-08 20:30:10,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 20:30:10,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 20:30:10,985 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 20:30:10,985 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-08 20:30:10,986 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 20:30:10,986 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 20:30:10,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 20:30:10,986 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 20:30:10,986 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 20:30:10,987 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 20:30:10,988 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 20:30:10,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 20:30:10,988 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-08 20:30:10,988 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-08 20:30:10,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 20:30:10,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 20:30:10,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-08 20:30:10,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 20:30:10,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 20:30:10,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 20:30:10,989 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-08 20:30:10,989 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 20:30:10,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 20:30:10,990 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_201014bd-8d08-4e46-b084-b11f6e914b9b/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 -> 95b20088216028e3d05e3cb41d4ed5c20af6a751 [2018-12-08 20:30:11,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 20:30:11,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 20:30:11,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 20:30:11,024 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 20:30:11,024 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 20:30:11,025 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/dll-circular_false-unreach-call_false-valid-memcleanup.i [2018-12-08 20:30:11,061 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/data/11635bc1b/071facf40ff3483db3c750b73a8c3916/FLAGbf14d0721 [2018-12-08 20:30:11,505 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 20:30:11,505 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/sv-benchmarks/c/forester-heap/dll-circular_false-unreach-call_false-valid-memcleanup.i [2018-12-08 20:30:11,511 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/data/11635bc1b/071facf40ff3483db3c750b73a8c3916/FLAGbf14d0721 [2018-12-08 20:30:11,519 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/data/11635bc1b/071facf40ff3483db3c750b73a8c3916 [2018-12-08 20:30:11,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 20:30:11,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 20:30:11,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 20:30:11,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 20:30:11,524 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 20:30:11,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1209ac5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11, skipping insertion in model container [2018-12-08 20:30:11,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 20:30:11,549 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 20:30:11,696 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 20:30:11,739 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 20:30:11,762 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 20:30:11,782 INFO L195 MainTranslator]: Completed translation [2018-12-08 20:30:11,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11 WrapperNode [2018-12-08 20:30:11,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 20:30:11,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 20:30:11,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 20:30:11,782 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 20:30:11,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 20:30:11,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 20:30:11,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 20:30:11,807 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 20:30:11,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... [2018-12-08 20:30:11,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 20:30:11,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 20:30:11,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 20:30:11,824 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 20:30:11,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:30:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/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 [2018-12-08 20:30:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 20:30:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 20:30:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 20:30:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 20:30:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 20:30:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 20:30:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 20:30:11,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 20:30:12,051 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 20:30:12,051 INFO L280 CfgBuilder]: Removed 13 assue(true) statements. [2018-12-08 20:30:12,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:30:12 BoogieIcfgContainer [2018-12-08 20:30:12,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 20:30:12,052 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-08 20:30:12,052 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-08 20:30:12,058 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-08 20:30:12,059 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:30:12" (1/1) ... [2018-12-08 20:30:12,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:30:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 20:30:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2018-12-08 20:30:12,086 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2018-12-08 20:30:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-08 20:30:12,088 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 20:30:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:30:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 20:30:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 20:30:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2018-12-08 20:30:12,161 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2018-12-08 20:30:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-08 20:30:12,161 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 20:30:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:30:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 20:30:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 20:30:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2018-12-08 20:30:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2018-12-08 20:30:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-08 20:30:12,280 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 20:30:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:30:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 20:30:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 20:30:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 37 states and 55 transitions. [2018-12-08 20:30:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2018-12-08 20:30:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-08 20:30:12,407 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 20:30:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:30:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 20:30:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 20:30:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 37 states and 54 transitions. [2018-12-08 20:30:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2018-12-08 20:30:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 20:30:12,434 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 20:30:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:30:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 20:30:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 20:30:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 41 states and 62 transitions. [2018-12-08 20:30:12,580 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 62 transitions. [2018-12-08 20:30:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 20:30:12,581 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 20:30:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:30:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:30:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:30:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:30:12,649 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2018-12-08 20:30:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.12 08:30:12 ImpRootNode [2018-12-08 20:30:12,667 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-08 20:30:12,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 20:30:12,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 20:30:12,667 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 20:30:12,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:30:12" (3/4) ... [2018-12-08 20:30:12,669 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 20:30:12,695 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_201014bd-8d08-4e46-b084-b11f6e914b9b/bin-2019/ukojak/witness.graphml [2018-12-08 20:30:12,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 20:30:12,696 INFO L168 Benchmark]: Toolchain (without parser) took 1174.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.5 MB). Free memory was 951.7 MB in the beginning and 915.8 MB in the end (delta: 35.9 MB). Peak memory consumption was 111.3 MB. Max. memory is 11.5 GB. [2018-12-08 20:30:12,697 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 20:30:12,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.5 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -106.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-12-08 20:30:12,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 20:30:12,698 INFO L168 Benchmark]: Boogie Preprocessor took 16.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 20:30:12,698 INFO L168 Benchmark]: RCFGBuilder took 227.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2018-12-08 20:30:12,698 INFO L168 Benchmark]: CodeCheck took 614.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 923.1 MB in the end (delta: 101.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 11.5 GB. [2018-12-08 20:30:12,698 INFO L168 Benchmark]: Witness Printer took 28.30 ms. Allocated memory is still 1.1 GB. Free memory was 923.1 MB in the beginning and 915.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2018-12-08 20:30:12,700 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, 3 error locations. UNSAFE Result, 0.5s OverallTime, 6 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 256 SDtfs, 136 SDslu, 284 SDs, 0 SdLazy, 302 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) [L1021] EXPR x->data [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.5 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -106.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 227.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * CodeCheck took 614.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 923.1 MB in the end (delta: 101.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 11.5 GB. * Witness Printer took 28.30 ms. Allocated memory is still 1.1 GB. Free memory was 923.1 MB in the beginning and 915.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...