./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/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_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/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 0.1.23-1dbac8b [2018-11-10 07:05:13,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:05:13,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:05:13,480 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:05:13,480 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:05:13,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:05:13,482 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:05:13,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:05:13,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:05:13,484 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:05:13,485 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:05:13,485 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:05:13,486 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:05:13,487 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:05:13,487 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:05:13,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:05:13,488 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:05:13,490 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:05:13,491 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:05:13,492 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:05:13,493 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:05:13,494 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:05:13,495 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:05:13,495 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:05:13,496 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:05:13,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:05:13,497 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:05:13,497 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:05:13,498 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:05:13,498 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:05:13,499 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:05:13,499 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:05:13,499 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:05:13,499 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:05:13,500 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:05:13,501 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:05:13,501 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 07:05:13,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:05:13,511 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:05:13,512 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:05:13,512 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 07:05:13,512 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:05:13,513 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:05:13,513 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:05:13,513 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:05:13,513 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:05:13,513 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:05:13,513 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:05:13,513 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:05:13,514 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:05:13,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:05:13,514 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:05:13,514 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:05:13,514 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:05:13,514 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 07:05:13,514 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 07:05:13,514 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 07:05:13,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:05:13,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:05:13,516 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_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/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 [2018-11-10 07:05:13,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:05:13,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:05:13,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:05:13,552 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:05:13,552 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:05:13,553 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:05:13,600 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/data/7686ab452/9f5030747399433cb93f89efecdb820d/FLAG3b641afce [2018-11-10 07:05:13,956 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:05:13,956 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:05:13,965 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/data/7686ab452/9f5030747399433cb93f89efecdb820d/FLAG3b641afce [2018-11-10 07:05:13,973 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/data/7686ab452/9f5030747399433cb93f89efecdb820d [2018-11-10 07:05:13,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:05:13,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:05:13,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:05:13,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:05:13,978 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:05:13,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:05:13" (1/1) ... [2018-11-10 07:05:13,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22545d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:13, skipping insertion in model container [2018-11-10 07:05:13,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:05:13" (1/1) ... [2018-11-10 07:05:13,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:05:14,013 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:05:14,200 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:05:14,208 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:05:14,240 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:05:14,263 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:05:14,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14 WrapperNode [2018-11-10 07:05:14,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:05:14,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:05:14,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:05:14,264 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:05:14,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:05:14,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:05:14,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:05:14,337 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:05:14,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:05:14,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:05:14,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:05:14,354 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:05:14,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:05:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/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 [2018-11-10 07:05:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 07:05:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 07:05:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 07:05:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 07:05:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 07:05:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 07:05:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:05:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:05:14,721 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:05:14,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:05:14 BoogieIcfgContainer [2018-11-10 07:05:14,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:05:14,722 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 07:05:14,722 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 07:05:14,728 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 07:05:14,729 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:05:14" (1/1) ... [2018-11-10 07:05:14,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:05:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 07:05:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2018-11-10 07:05:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2018-11-10 07:05:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 07:05:14,761 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 07:05:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:05:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:05:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 07:05:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 29 states and 36 transitions. [2018-11-10 07:05:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2018-11-10 07:05:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 07:05:14,837 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 07:05:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:05:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:05:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 07:05:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 31 states and 39 transitions. [2018-11-10 07:05:14,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-11-10 07:05:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 07:05:14,918 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 07:05:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:05:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 07:05:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 07:05:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 33 states and 42 transitions. [2018-11-10 07:05:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2018-11-10 07:05:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 07:05:15,100 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 07:05:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:05:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 07:05:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 07:05:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 33 states and 41 transitions. [2018-11-10 07:05:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2018-11-10 07:05:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 07:05:15,128 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 07:05:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:05:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 07:05:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 07:05:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 27 states and 33 transitions. [2018-11-10 07:05:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2018-11-10 07:05:15,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 07:05:15,287 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2018-11-10 07:05:15,294 INFO L778 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2018-11-10 07:05:15,327 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-11-10 07:05:15,329 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-11-10 07:05:15,330 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-11-10 07:05:15,334 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-11-10 07:05:15,335 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-11-10 07:05:15,335 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-11-10 07:05:15,335 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-11-10 07:05:15,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 07:05:15 ImpRootNode [2018-11-10 07:05:15,335 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 07:05:15,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:05:15,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:05:15,336 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:05:15,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:05:14" (3/4) ... [2018-11-10 07:05:15,339 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 07:05:15,344 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure exit [2018-11-10 07:05:15,348 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2018-11-10 07:05:15,348 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 07:05:15,348 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 07:05:15,349 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 07:05:15,386 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0f89ca0d-7bc7-47e5-a91f-2a34084ced91/bin-2019/ukojak/witness.graphml [2018-11-10 07:05:15,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:05:15,387 INFO L168 Benchmark]: Toolchain (without parser) took 1411.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 956.6 MB in the beginning and 991.0 MB in the end (delta: -34.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,388 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:05:15,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.85 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 925.9 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,389 INFO L168 Benchmark]: Boogie Preprocessor took 16.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,389 INFO L168 Benchmark]: RCFGBuilder took 367.52 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: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,389 INFO L168 Benchmark]: CodeCheck took 613.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.3 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,390 INFO L168 Benchmark]: Witness Printer took 50.46 ms. Allocated memory is still 1.1 GB. Free memory was 996.3 MB in the beginning and 991.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:05:15,391 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, 51 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 6 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 432 SDtfs, 192 SDslu, 156 SDs, 0 SdLazy, 308 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 620 GetRequests, 595 SyntacticMatches, 9 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 10/10 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: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 1 <= i - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.85 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 925.9 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 367.52 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: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. * CodeCheck took 613.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.3 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. * Witness Printer took 50.46 ms. Allocated memory is still 1.1 GB. Free memory was 996.3 MB in the beginning and 991.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...