./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 .............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 18:30:19,628 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 18:30:19,630 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 18:30:19,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 18:30:19,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 18:30:19,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 18:30:19,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 18:30:19,638 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 18:30:19,638 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 18:30:19,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 18:30:19,639 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 18:30:19,639 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 18:30:19,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 18:30:19,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 18:30:19,641 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 18:30:19,641 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 18:30:19,642 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 18:30:19,643 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 18:30:19,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 18:30:19,645 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 18:30:19,646 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 18:30:19,647 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 18:30:19,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 18:30:19,649 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 18:30:19,649 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 18:30:19,649 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 18:30:19,650 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 18:30:19,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 18:30:19,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 18:30:19,651 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 18:30:19,651 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 18:30:19,652 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 18:30:19,652 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 18:30:19,652 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 18:30:19,653 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 18:30:19,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 18:30:19,653 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 18:30:19,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 18:30:19,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 18:30:19,662 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 18:30:19,662 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 18:30:19,663 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 18:30:19,663 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 18:30:19,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 18:30:19,663 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 18:30:19,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 18:30:19,663 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 18:30:19,663 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 18:30:19,664 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 18:30:19,664 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 18:30:19,665 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 18:30:19,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 18:30:19,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 18:30:19,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 18:30:19,665 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 18:30:19,665 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 18:30:19,665 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 18:30:19,666 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 18:30:19,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 18:30:19,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 18:30:19,666 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_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9f9c3b0fdd5428a38e0eab9236fadbdbb3aa880 [2018-11-18 18:30:19,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 18:30:19,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 18:30:19,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 18:30:19,702 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 18:30:19,703 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 18:30:19,703 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-11-18 18:30:19,747 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/data/c71e46116/f44fd2380b564c1d8af5a57d295b14e6/FLAG44db67c4b [2018-11-18 18:30:20,194 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 18:30:20,194 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/sv-benchmarks/c/forester-heap/sll-rb-sentinel_false-unreach-call_false-valid-memcleanup.i [2018-11-18 18:30:20,205 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/data/c71e46116/f44fd2380b564c1d8af5a57d295b14e6/FLAG44db67c4b [2018-11-18 18:30:20,217 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/data/c71e46116/f44fd2380b564c1d8af5a57d295b14e6 [2018-11-18 18:30:20,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 18:30:20,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 18:30:20,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 18:30:20,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 18:30:20,223 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 18:30:20,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8db03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20, skipping insertion in model container [2018-11-18 18:30:20,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 18:30:20,261 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 18:30:20,448 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 18:30:20,455 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 18:30:20,482 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 18:30:20,552 INFO L195 MainTranslator]: Completed translation [2018-11-18 18:30:20,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20 WrapperNode [2018-11-18 18:30:20,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 18:30:20,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 18:30:20,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 18:30:20,553 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 18:30:20,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 18:30:20,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 18:30:20,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 18:30:20,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 18:30:20,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:20,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 18:30:20,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 18:30:20,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 18:30:20,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 18:30:20,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/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 [2018-11-18 18:30:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 18:30:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 18:30:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 18:30:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 18:30:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 18:30:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 18:30:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 18:30:20,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 18:30:20,990 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 18:30:20,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:20 BoogieIcfgContainer [2018-11-18 18:30:20,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 18:30:20,991 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 18:30:20,992 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 18:30:21,002 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 18:30:21,003 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:20" (1/1) ... [2018-11-18 18:30:21,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 18:30:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 32 states and 50 transitions. [2018-11-18 18:30:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2018-11-18 18:30:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-18 18:30:21,052 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 32 states and 46 transitions. [2018-11-18 18:30:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-11-18 18:30:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 18:30:21,158 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 44 transitions. [2018-11-18 18:30:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2018-11-18 18:30:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 18:30:21,275 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 38 states and 52 transitions. [2018-11-18 18:30:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2018-11-18 18:30:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 18:30:21,710 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2018-11-18 18:30:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2018-11-18 18:30:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 18:30:22,033 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 31 states and 40 transitions. [2018-11-18 18:30:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2018-11-18 18:30:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 18:30:22,254 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 46 states and 63 transitions. [2018-11-18 18:30:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2018-11-18 18:30:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 18:30:23,388 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 66 states and 104 transitions. [2018-11-18 18:30:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 104 transitions. [2018-11-18 18:30:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 18:30:28,101 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:30:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 86 states and 146 transitions. [2018-11-18 18:30:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 146 transitions. [2018-11-18 18:30:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 18:30:33,088 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:30:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 18:30:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:30:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 88 states and 149 transitions. [2018-11-18 18:30:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 149 transitions. [2018-11-18 18:30:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 18:30:33,478 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:30:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:30:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:30:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:30:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:30:33,639 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2018-11-18 18:30:33,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 06:30:33 ImpRootNode [2018-11-18 18:30:33,675 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 18:30:33,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 18:30:33,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 18:30:33,676 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 18:30:33,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:20" (3/4) ... [2018-11-18 18:30:33,679 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 18:30:33,737 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4f9cb8c9-e012-4661-999d-bd41b1bc7c76/bin-2019/ukojak/witness.graphml [2018-11-18 18:30:33,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 18:30:33,738 INFO L168 Benchmark]: Toolchain (without parser) took 13518.39 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 285.7 MB). Free memory was 955.5 MB in the beginning and 842.0 MB in the end (delta: 113.5 MB). Peak memory consumption was 399.2 MB. Max. memory is 11.5 GB. [2018-11-18 18:30:33,740 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 18:30:33,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2018-11-18 18:30:33,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.19 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 18:30:33,742 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 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. [2018-11-18 18:30:33,742 INFO L168 Benchmark]: RCFGBuilder took 387.86 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2018-11-18 18:30:33,743 INFO L168 Benchmark]: CodeCheck took 12684.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 158.9 MB). Free memory was 1.1 GB in the beginning and 842.0 MB in the end (delta: 236.0 MB). Peak memory consumption was 394.9 MB. Max. memory is 11.5 GB. [2018-11-18 18:30:33,743 INFO L168 Benchmark]: Witness Printer took 61.52 ms. Allocated memory is still 1.3 GB. Free memory is still 842.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 18:30:33,749 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, 38 locations, 4 error locations. UNSAFE Result, 12.6s OverallTime, 10 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4496 SDtfs, 4104 SDslu, 4908 SDs, 0 SdLazy, 9154 SolverSat, 2770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1334 GetRequests, 1109 SyntacticMatches, 35 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14664 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 52762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 9/29 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] EXPR, FCALL malloc(sizeof(SLL)) [L994] SLL* null = malloc(sizeof(SLL)); [L995] FCALL null->colour = BLACK [L996] FCALL null->next = ((void*)0) [L998] EXPR, FCALL malloc(sizeof(SLL)) [L998] SLL* list = malloc(sizeof(SLL)); [L999] FCALL list->next = null [L1000] FCALL list->colour = BLACK [L1002] SLL* end = list; [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] EXPR, FCALL malloc(sizeof(SLL)) [L1008] FCALL end->next = malloc(sizeof(SLL)) [L1009] EXPR, FCALL end->next [L1009] end = end->next [L1010] FCALL end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] FCALL end->colour = RED [L1019] EXPR, FCALL malloc(sizeof(SLL)) [L1019] FCALL end->next = malloc(sizeof(SLL)) [L1020] EXPR, FCALL end->next [L1020] end = end->next [L1021] FCALL end->next = null [L1022] FCALL end->colour = BLACK [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1030] COND FALSE !(0) [L1031] EXPR, FCALL end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1031] COND FALSE !(0) [L1033] COND TRUE null != end [L1035] EXPR, FCALL end->colour [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR, FCALL end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR, FCALL end->colour [L1035] COND TRUE RED == end->colour [L1037] EXPR, FCALL end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) [L1038] COND FALSE !(0) [L1039] EXPR, FCALL end->colour [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.19 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.79 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. * RCFGBuilder took 387.86 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * CodeCheck took 12684.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 158.9 MB). Free memory was 1.1 GB in the beginning and 842.0 MB in the end (delta: 236.0 MB). Peak memory consumption was 394.9 MB. Max. memory is 11.5 GB. * Witness Printer took 61.52 ms. Allocated memory is still 1.3 GB. Free memory is still 842.0 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...