./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted_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_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/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 3d1a973dcd7009ffcd2eda1338249f4d290fb62a ........................................................................................................................................................................................................................................................................ 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 11:50:59,108 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:50:59,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:50:59,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:50:59,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:50:59,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:50:59,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:50:59,117 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:50:59,118 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:50:59,118 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:50:59,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:50:59,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:50:59,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:50:59,119 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:50:59,120 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:50:59,120 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:50:59,121 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:50:59,122 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:50:59,122 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:50:59,123 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:50:59,124 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:50:59,124 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:50:59,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:50:59,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:50:59,125 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:50:59,126 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:50:59,126 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:50:59,127 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:50:59,127 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:50:59,128 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:50:59,128 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:50:59,128 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:50:59,128 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:50:59,128 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:50:59,129 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:50:59,129 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:50:59,129 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-09 11:50:59,136 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:50:59,136 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:50:59,137 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:50:59,137 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-09 11:50:59,137 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 11:50:59,138 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:50:59,138 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:50:59,139 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 11:50:59,139 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 11:50:59,139 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:50:59,139 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:50:59,140 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 11:50:59,140 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:50:59,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:50:59,140 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_f98607f7-69da-46bb-854a-8db72d44db95/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 -> 3d1a973dcd7009ffcd2eda1338249f4d290fb62a [2018-12-09 11:50:59,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:50:59,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:50:59,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:50:59,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:50:59,171 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:50:59,171 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-12-09 11:50:59,219 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/data/ffc456630/91f1bd46c56849ad952ccb4385a38ae9/FLAG867d92e05 [2018-12-09 11:50:59,643 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:50:59,643 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-12-09 11:50:59,649 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/data/ffc456630/91f1bd46c56849ad952ccb4385a38ae9/FLAG867d92e05 [2018-12-09 11:50:59,658 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/data/ffc456630/91f1bd46c56849ad952ccb4385a38ae9 [2018-12-09 11:50:59,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:50:59,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:50:59,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:50:59,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:50:59,664 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:50:59,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca176b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59, skipping insertion in model container [2018-12-09 11:50:59,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:50:59,690 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:50:59,841 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:50:59,847 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:50:59,908 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:50:59,928 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:50:59,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59 WrapperNode [2018-12-09 11:50:59,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:50:59,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:50:59,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:50:59,929 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:50:59,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:50:59,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:50:59,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:50:59,956 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:50:59,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... [2018-12-09 11:50:59,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:50:59,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:50:59,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:50:59,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:50:59,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:50:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/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 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 11:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:51:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:51:00,400 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:51:00,400 INFO L280 CfgBuilder]: Removed 22 assue(true) statements. [2018-12-09 11:51:00,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:51:00 BoogieIcfgContainer [2018-12-09 11:51:00,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:51:00,401 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 11:51:00,401 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 11:51:00,408 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 11:51:00,408 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:51:00" (1/1) ... [2018-12-09 11:51:00,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 11:51:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 44 states and 71 transitions. [2018-12-09 11:51:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 71 transitions. [2018-12-09 11:51:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 11:51:00,439 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 11:51:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:00,514 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 11:51:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 11:51:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 44 states and 67 transitions. [2018-12-09 11:51:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 67 transitions. [2018-12-09 11:51:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 11:51:00,520 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 11:51:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:00,552 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 11:51:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 11:51:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 46 states and 70 transitions. [2018-12-09 11:51:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 70 transitions. [2018-12-09 11:51:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 11:51:00,594 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 11:51:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 11:51:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 11:51:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 44 states and 68 transitions. [2018-12-09 11:51:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2018-12-09 11:51:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 11:51:00,782 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 11:51:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 11:51:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 11:51:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 44 states and 63 transitions. [2018-12-09 11:51:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2018-12-09 11:51:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 11:51:00,802 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 11:51:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:51:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:51:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:51:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:51:00,934 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2018-12-09 11:51:00,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 11:51:00 ImpRootNode [2018-12-09 11:51:00,955 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 11:51:00,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:51:00,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:51:00,955 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:51:00,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:51:00" (3/4) ... [2018-12-09 11:51:00,957 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 11:51:00,987 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f98607f7-69da-46bb-854a-8db72d44db95/bin-2019/ukojak/witness.graphml [2018-12-09 11:51:00,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:51:00,988 INFO L168 Benchmark]: Toolchain (without parser) took 1327.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 950.6 MB in the beginning and 976.7 MB in the end (delta: -26.1 MB). Peak memory consumption was 98.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:00,989 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-09 11:51:00,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:00,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.44 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:00,990 INFO L168 Benchmark]: Boogie Preprocessor took 19.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:51:00,990 INFO L168 Benchmark]: RCFGBuilder took 424.90 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: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:00,991 INFO L168 Benchmark]: CodeCheck took 553.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.0 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:00,991 INFO L168 Benchmark]: Witness Printer took 32.79 ms. Allocated memory is still 1.2 GB. Free memory was 982.0 MB in the beginning and 976.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:00,992 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, 56 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 5 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 106 SDtfs, 40 SDslu, 48 SDs, 0 SdLazy, 152 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 241 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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: 1027]: 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 = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.44 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 424.90 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: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 11.5 GB. * CodeCheck took 553.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.0 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.79 ms. Allocated memory is still 1.2 GB. Free memory was 982.0 MB in the beginning and 976.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...