./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list_flag_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_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/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 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff ............................................................................................................................................................................................................................................................... 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 15:51:03,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 15:51:03,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 15:51:03,162 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 15:51:03,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 15:51:03,163 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 15:51:03,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 15:51:03,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 15:51:03,165 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 15:51:03,166 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 15:51:03,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 15:51:03,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 15:51:03,167 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 15:51:03,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 15:51:03,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 15:51:03,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 15:51:03,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 15:51:03,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 15:51:03,170 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 15:51:03,171 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 15:51:03,172 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 15:51:03,172 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 15:51:03,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 15:51:03,173 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 15:51:03,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 15:51:03,174 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 15:51:03,175 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 15:51:03,175 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 15:51:03,176 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 15:51:03,176 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 15:51:03,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 15:51:03,177 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 15:51:03,177 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 15:51:03,177 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 15:51:03,177 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 15:51:03,178 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 15:51:03,178 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-08 15:51:03,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 15:51:03,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 15:51:03,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 15:51:03,186 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-08 15:51:03,186 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 15:51:03,186 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 15:51:03,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 15:51:03,187 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 15:51:03,188 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 15:51:03,188 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 15:51:03,188 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 15:51:03,188 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 15:51:03,188 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-08 15:51:03,188 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-08 15:51:03,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-08 15:51:03,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 15:51:03,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 15:51:03,190 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_c3274972-b2ef-4578-ac0f-06564a9a564e/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 -> 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff [2018-12-08 15:51:03,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 15:51:03,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 15:51:03,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 15:51:03,216 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 15:51:03,217 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 15:51:03,217 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-08 15:51:03,251 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/data/11e0457ca/37a4290fa86d4cbe90a58a83f56d1014/FLAG77e102cd8 [2018-12-08 15:51:03,687 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 15:51:03,687 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-08 15:51:03,693 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/data/11e0457ca/37a4290fa86d4cbe90a58a83f56d1014/FLAG77e102cd8 [2018-12-08 15:51:03,701 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/data/11e0457ca/37a4290fa86d4cbe90a58a83f56d1014 [2018-12-08 15:51:03,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 15:51:03,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 15:51:03,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 15:51:03,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 15:51:03,706 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 15:51:03,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0cf6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03, skipping insertion in model container [2018-12-08 15:51:03,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 15:51:03,730 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 15:51:03,872 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:51:03,878 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 15:51:03,932 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:51:03,954 INFO L195 MainTranslator]: Completed translation [2018-12-08 15:51:03,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03 WrapperNode [2018-12-08 15:51:03,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 15:51:03,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 15:51:03,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 15:51:03,955 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 15:51:03,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 15:51:03,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 15:51:03,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 15:51:03,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 15:51:03,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... [2018-12-08 15:51:03,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 15:51:03,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 15:51:03,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 15:51:03,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 15:51:03,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:51:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/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 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-08 15:51:04,025 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-08 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 15:51:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 15:51:04,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 15:51:04,191 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 15:51:04,191 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-08 15:51:04,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:51:04 BoogieIcfgContainer [2018-12-08 15:51:04,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 15:51:04,192 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-08 15:51:04,193 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-08 15:51:04,199 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-08 15:51:04,199 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:51:04" (1/1) ... [2018-12-08 15:51:04,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:51:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 15:51:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2018-12-08 15:51:04,230 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2018-12-08 15:51:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 15:51:04,232 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 15:51:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:51:04,297 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 15:51:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 15:51:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2018-12-08 15:51:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2018-12-08 15:51:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 15:51:04,303 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 15:51:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:51:04,354 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 15:51:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 15:51:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 43 transitions. [2018-12-08 15:51:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2018-12-08 15:51:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 15:51:04,417 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 15:51:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:51:04,435 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 15:51:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 15:51:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 33 states and 47 transitions. [2018-12-08 15:51:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2018-12-08 15:51:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 15:51:04,447 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 15:51:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:51:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:51:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 15:51:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 33 states and 45 transitions. [2018-12-08 15:51:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2018-12-08 15:51:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 15:51:04,532 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 15:51:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:51:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:51:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 15:51:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 33 states and 43 transitions. [2018-12-08 15:51:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2018-12-08 15:51:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 15:51:04,631 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 15:51:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:51:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:51:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:51:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:51:04,694 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2018-12-08 15:51:04,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.12 03:51:04 ImpRootNode [2018-12-08 15:51:04,713 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-08 15:51:04,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 15:51:04,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 15:51:04,714 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 15:51:04,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:51:04" (3/4) ... [2018-12-08 15:51:04,716 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 15:51:04,743 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c3274972-b2ef-4578-ac0f-06564a9a564e/bin-2019/ukojak/witness.graphml [2018-12-08 15:51:04,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 15:51:04,744 INFO L168 Benchmark]: Toolchain (without parser) took 1040.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 951.7 MB in the beginning and 962.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 82.4 MB. Max. memory is 11.5 GB. [2018-12-08 15:51:04,745 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:51:04,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2018-12-08 15:51:04,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.48 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. [2018-12-08 15:51:04,746 INFO L168 Benchmark]: Boogie Preprocessor took 14.59 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 15:51:04,746 INFO L168 Benchmark]: RCFGBuilder took 198.53 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-12-08 15:51:04,746 INFO L168 Benchmark]: CodeCheck took 520.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.3 MB in the end (delta: 89.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. [2018-12-08 15:51:04,747 INFO L168 Benchmark]: Witness Printer took 29.87 ms. Allocated memory is still 1.1 GB. Free memory was 965.3 MB in the beginning and 962.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:51:04,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 6 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 448 SDtfs, 208 SDslu, 192 SDs, 0 SdLazy, 526 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 430 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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: 652]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] p->h = 2 [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] p->n = t [L641] EXPR p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] EXPR p->h [L649] COND FALSE !(p->h == 1) [L651] EXPR p->h [L651] COND TRUE p->h != 3 [L652] __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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.48 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 14.59 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 198.53 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * CodeCheck took 520.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.3 MB in the end (delta: 89.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. * Witness Printer took 29.87 ms. Allocated memory is still 1.1 GB. Free memory was 965.3 MB in the beginning and 962.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...