./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_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_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/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 2a99c5e1922c5e2d2ce50e982def02dab2dbd81e ................................................................................................................................................................................................................................................................................................ 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 [2018-12-02 05:19:36,421 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:19:36,422 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:19:36,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:19:36,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:19:36,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:19:36,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:19:36,429 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:19:36,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:19:36,431 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:19:36,431 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:19:36,431 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:19:36,432 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:19:36,432 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:19:36,433 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:19:36,433 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:19:36,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:19:36,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:19:36,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:19:36,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:19:36,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:19:36,437 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:19:36,439 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:19:36,439 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:19:36,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:19:36,440 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:19:36,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:19:36,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:19:36,441 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:19:36,441 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:19:36,441 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:19:36,442 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:19:36,442 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:19:36,442 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:19:36,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:19:36,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:19:36,443 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-02 05:19:36,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:19:36,451 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:19:36,452 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:19:36,452 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-02 05:19:36,453 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 05:19:36,453 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 05:19:36,453 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:19:36,453 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:19:36,453 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:19:36,454 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:19:36,454 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:19:36,454 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:19:36,454 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:19:36,454 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:19:36,454 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:19:36,455 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:19:36,455 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:19:36,455 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:19:36,455 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-02 05:19:36,455 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-02 05:19:36,455 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:19:36,456 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:19:36,456 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 05:19:36,456 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:19:36,456 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:19:36,456 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:19:36,456 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-02 05:19:36,456 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:19:36,457 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 05:19:36,457 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_d77d12ad-fa0b-444c-a122-f5867629c7be/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 -> 2a99c5e1922c5e2d2ce50e982def02dab2dbd81e [2018-12-02 05:19:36,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:19:36,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:19:36,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:19:36,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:19:36,490 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:19:36,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-12-02 05:19:36,525 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/data/0d97ce35e/63d80bcd9ffa40cb8c191011250a3aee/FLAGcbf71b3eb [2018-12-02 05:19:36,979 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:19:36,979 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-12-02 05:19:36,986 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/data/0d97ce35e/63d80bcd9ffa40cb8c191011250a3aee/FLAGcbf71b3eb [2018-12-02 05:19:36,994 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/data/0d97ce35e/63d80bcd9ffa40cb8c191011250a3aee [2018-12-02 05:19:36,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:19:36,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:19:36,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:19:36,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:19:37,000 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:19:37,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:19:36" (1/1) ... [2018-12-02 05:19:37,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b1aa1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37, skipping insertion in model container [2018-12-02 05:19:37,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:19:36" (1/1) ... [2018-12-02 05:19:37,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:19:37,024 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:19:37,172 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:19:37,177 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:19:37,233 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:19:37,261 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:19:37,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37 WrapperNode [2018-12-02 05:19:37,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:19:37,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:19:37,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:19:37,262 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:19:37,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:19:37,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:19:37,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:19:37,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:19:37,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:19:37,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:19:37,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:19:37,302 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:19:37,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:19:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/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 [2018-12-02 05:19:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:19:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 05:19:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 05:19:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:19:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:19:37,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:19:37,508 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:19:37,509 INFO L280 CfgBuilder]: Removed 16 assue(true) statements. [2018-12-02 05:19:37,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:19:37 BoogieIcfgContainer [2018-12-02 05:19:37,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:19:37,509 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-02 05:19:37,509 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-02 05:19:37,516 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-02 05:19:37,516 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:19:37" (1/1) ... [2018-12-02 05:19:37,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:19:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2018-12-02 05:19:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2018-12-02 05:19:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 05:19:37,545 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:19:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2018-12-02 05:19:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-12-02 05:19:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 05:19:37,609 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:19:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2018-12-02 05:19:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2018-12-02 05:19:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 05:19:37,675 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:19:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 15 states and 21 transitions. [2018-12-02 05:19:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2018-12-02 05:19:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 05:19:37,809 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 05:19:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 23 transitions. [2018-12-02 05:19:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2018-12-02 05:19:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 05:19:37,952 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:19:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2018-12-02 05:19:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-12-02 05:19:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 05:19:38,258 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 05:19:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 20 states and 26 transitions. [2018-12-02 05:19:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2018-12-02 05:19:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 05:19:38,494 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:19:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 05:19:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 05:19:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 34 states and 50 transitions. [2018-12-02 05:19:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2018-12-02 05:19:40,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 05:19:40,611 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 05:19:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:19:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:19:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:19:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:19:40,687 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2018-12-02 05:19:40,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 05:19:40 ImpRootNode [2018-12-02 05:19:40,716 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-02 05:19:40,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:19:40,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:19:40,716 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:19:40,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:19:37" (3/4) ... [2018-12-02 05:19:40,719 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 05:19:40,770 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d77d12ad-fa0b-444c-a122-f5867629c7be/bin-2019/ukojak/witness.graphml [2018-12-02 05:19:40,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:19:40,771 INFO L168 Benchmark]: Toolchain (without parser) took 3774.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 951.7 MB in the beginning and 950.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 147.8 MB. Max. memory is 11.5 GB. [2018-12-02 05:19:40,772 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. [2018-12-02 05:19:40,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -139.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-02 05:19:40,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.63 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 05:19:40,774 INFO L168 Benchmark]: Boogie Preprocessor took 14.68 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. [2018-12-02 05:19:40,774 INFO L168 Benchmark]: RCFGBuilder took 207.40 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-02 05:19:40,775 INFO L168 Benchmark]: CodeCheck took 3206.31 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 44.0 MB). Free memory was 1.1 GB in the beginning and 950.2 MB in the end (delta: 111.5 MB). Peak memory consumption was 155.5 MB. Max. memory is 11.5 GB. [2018-12-02 05:19:40,775 INFO L168 Benchmark]: Witness Printer took 54.58 ms. Allocated memory is still 1.2 GB. Free memory is still 950.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:19:40,778 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, 23 locations, 1 error locations. UNSAFE Result, 3.1s OverallTime, 8 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 960 SDtfs, 366 SDslu, 136 SDs, 0 SdLazy, 2412 SolverSat, 790 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 696 GetRequests, 584 SyntacticMatches, 10 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3139 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 16/27 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] SLL s = sll_create(len + 1); [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] COND TRUE len != sll_length(s) [L602] __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 264.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -139.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.63 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.68 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 207.40 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * CodeCheck took 3206.31 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 44.0 MB). Free memory was 1.1 GB in the beginning and 950.2 MB in the end (delta: 111.5 MB). Peak memory consumption was 155.5 MB. Max. memory is 11.5 GB. * Witness Printer took 54.58 ms. Allocated memory is still 1.2 GB. Free memory is still 950.2 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...