./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/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 37440c69f444d214751d1c949a02dfc2bef21892 ....................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 06:56:51,557 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 06:56:51,558 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 06:56:51,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 06:56:51,565 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 06:56:51,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 06:56:51,566 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 06:56:51,567 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 06:56:51,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 06:56:51,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 06:56:51,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 06:56:51,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 06:56:51,570 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 06:56:51,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 06:56:51,571 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 06:56:51,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 06:56:51,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 06:56:51,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 06:56:51,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 06:56:51,575 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 06:56:51,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 06:56:51,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 06:56:51,577 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 06:56:51,577 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 06:56:51,578 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 06:56:51,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 06:56:51,579 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 06:56:51,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 06:56:51,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 06:56:51,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 06:56:51,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 06:56:51,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 06:56:51,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 06:56:51,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 06:56:51,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 06:56:51,582 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 06:56:51,583 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-23 06:56:51,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 06:56:51,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 06:56:51,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 06:56:51,591 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-11-23 06:56:51,591 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 06:56:51,591 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 06:56:51,591 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 06:56:51,591 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 06:56:51,592 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 06:56:51,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 06:56:51,593 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 06:56:51,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 06:56:51,593 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-23 06:56:51,593 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-23 06:56:51,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 06:56:51,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 06:56:51,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 06:56:51,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 06:56:51,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 06:56:51,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 06:56:51,594 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-23 06:56:51,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 06:56:51,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 06:56:51,594 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_afdc010f-fbf5-41a7-8489-414ff59740d2/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 -> 37440c69f444d214751d1c949a02dfc2bef21892 [2018-11-23 06:56:51,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 06:56:51,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 06:56:51,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 06:56:51,632 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 06:56:51,632 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 06:56:51,633 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-23 06:56:51,678 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/data/56e078d3f/876adc96a87f48d0a93f9110bdf28252/FLAGca64ac313 [2018-11-23 06:56:52,042 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 06:56:52,042 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-23 06:56:52,052 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/data/56e078d3f/876adc96a87f48d0a93f9110bdf28252/FLAGca64ac313 [2018-11-23 06:56:52,433 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/data/56e078d3f/876adc96a87f48d0a93f9110bdf28252 [2018-11-23 06:56:52,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 06:56:52,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 06:56:52,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 06:56:52,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 06:56:52,440 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 06:56:52,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3943eaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52, skipping insertion in model container [2018-11-23 06:56:52,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 06:56:52,476 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 06:56:52,674 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:56:52,680 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 06:56:52,751 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:56:52,783 INFO L195 MainTranslator]: Completed translation [2018-11-23 06:56:52,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52 WrapperNode [2018-11-23 06:56:52,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 06:56:52,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 06:56:52,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 06:56:52,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 06:56:52,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 06:56:52,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 06:56:52,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 06:56:52,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 06:56:52,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... [2018-11-23 06:56:52,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 06:56:52,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 06:56:52,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 06:56:52,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 06:56:52,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:56:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/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 [2018-11-23 06:56:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 06:56:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 06:56:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-23 06:56:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-23 06:56:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 06:56:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 06:56:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 06:56:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 06:56:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 06:56:52,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 06:56:53,184 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 06:56:53,184 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-11-23 06:56:53,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:56:53 BoogieIcfgContainer [2018-11-23 06:56:53,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 06:56:53,185 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-23 06:56:53,185 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-23 06:56:53,192 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-23 06:56:53,192 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:56:53" (1/1) ... [2018-11-23 06:56:53,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:56:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:56:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2018-11-23 06:56:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2018-11-23 06:56:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 06:56:53,222 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:56:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:56:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:56:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:56:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2018-11-23 06:56:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2018-11-23 06:56:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 06:56:53,375 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:56:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:56:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:56:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:56:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2018-11-23 06:56:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2018-11-23 06:56:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 06:56:53,500 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:56:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:56:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 06:56:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:56:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 30 states and 46 transitions. [2018-11-23 06:56:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2018-11-23 06:56:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 06:56:53,918 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:56:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:56:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 06:56:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:56:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 31 states and 47 transitions. [2018-11-23 06:56:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 47 transitions. [2018-11-23 06:56:53,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 06:56:53,979 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 06:56:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:56:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 06:56:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 06:56:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2018-11-23 06:56:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2018-11-23 06:56:54,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 06:56:54,199 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2018-11-23 06:56:54,207 INFO L775 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2018-11-23 06:56:54,236 INFO L579 CodeCheckObserver]: Invariant with dag size 1 [2018-11-23 06:56:54,238 INFO L579 CodeCheckObserver]: Invariant with dag size 3 [2018-11-23 06:56:54,242 INFO L579 CodeCheckObserver]: Invariant with dag size 1 [2018-11-23 06:56:54,242 INFO L579 CodeCheckObserver]: Invariant with dag size 11 [2018-11-23 06:56:54,243 INFO L579 CodeCheckObserver]: Invariant with dag size 3 [2018-11-23 06:56:54,243 INFO L579 CodeCheckObserver]: Invariant with dag size 3 [2018-11-23 06:56:54,243 INFO L579 CodeCheckObserver]: Invariant with dag size 1 [2018-11-23 06:56:54,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 06:56:54 ImpRootNode [2018-11-23 06:56:54,244 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-23 06:56:54,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 06:56:54,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 06:56:54,245 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 06:56:54,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:56:53" (3/4) ... [2018-11-23 06:56:54,249 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 06:56:54,254 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure exit [2018-11-23 06:56:54,257 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-23 06:56:54,257 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-23 06:56:54,257 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 06:56:54,297 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_afdc010f-fbf5-41a7-8489-414ff59740d2/bin-2019/ukojak/witness.graphml [2018-11-23 06:56:54,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 06:56:54,298 INFO L168 Benchmark]: Toolchain (without parser) took 1862.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 956.6 MB in the beginning and 953.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 140.2 MB. Max. memory is 11.5 GB. [2018-11-23 06:56:54,300 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:56:54,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-11-23 06:56:54,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:56:54,300 INFO L168 Benchmark]: Boogie Preprocessor took 17.62 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. [2018-11-23 06:56:54,301 INFO L168 Benchmark]: RCFGBuilder took 356.52 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: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2018-11-23 06:56:54,301 INFO L168 Benchmark]: CodeCheck took 1058.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.9 MB in the end (delta: 127.9 MB). Peak memory consumption was 127.9 MB. Max. memory is 11.5 GB. [2018-11-23 06:56:54,301 INFO L168 Benchmark]: Witness Printer took 53.54 ms. Allocated memory is still 1.2 GB. Free memory was 955.9 MB in the beginning and 953.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:56:54,304 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, 33 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 6 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 260 SDtfs, 176 SDslu, 136 SDs, 0 SdLazy, 614 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 485 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 21/34 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 - PositiveResult [Line: 630]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 1 <= i - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: (len == len && len == 2) || (2 <= len && len <= 1) - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.62 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. * RCFGBuilder took 356.52 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: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. * CodeCheck took 1058.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.9 MB in the end (delta: 127.9 MB). Peak memory consumption was 127.9 MB. Max. memory is 11.5 GB. * Witness Printer took 53.54 ms. Allocated memory is still 1.2 GB. Free memory was 955.9 MB in the beginning and 953.2 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 correct! Received shutdown request...