./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/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 7fbc512cc0cc4741feb6422c538797cb2d252dab ..................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 19:25:24,415 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 19:25:24,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 19:25:24,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 19:25:24,422 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 19:25:24,423 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 19:25:24,423 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 19:25:24,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 19:25:24,425 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 19:25:24,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 19:25:24,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 19:25:24,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 19:25:24,426 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 19:25:24,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 19:25:24,427 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 19:25:24,428 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 19:25:24,428 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 19:25:24,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 19:25:24,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 19:25:24,430 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 19:25:24,431 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 19:25:24,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 19:25:24,432 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 19:25:24,433 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 19:25:24,433 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 19:25:24,433 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 19:25:24,434 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 19:25:24,434 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 19:25:24,434 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 19:25:24,435 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 19:25:24,435 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 19:25:24,435 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 19:25:24,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 19:25:24,436 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 19:25:24,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 19:25:24,436 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 19:25:24,436 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-02 19:25:24,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 19:25:24,443 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 19:25:24,444 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 19:25:24,444 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-02 19:25:24,444 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 19:25:24,444 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 19:25:24,444 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 19:25:24,445 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 19:25:24,446 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-02 19:25:24,446 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 19:25:24,446 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 19:25:24,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 19:25:24,447 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_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/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 -> 7fbc512cc0cc4741feb6422c538797cb2d252dab [2018-12-02 19:25:24,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 19:25:24,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 19:25:24,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 19:25:24,475 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 19:25:24,475 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 19:25:24,475 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/../../sv-benchmarks/c/list-simple/dll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-12-02 19:25:24,520 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/data/4a0c0a99b/7a3b8ee73c3244a3835750f2626b2779/FLAGb420ce9fa [2018-12-02 19:25:24,946 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 19:25:24,946 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/sv-benchmarks/c/list-simple/dll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-12-02 19:25:24,952 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/data/4a0c0a99b/7a3b8ee73c3244a3835750f2626b2779/FLAGb420ce9fa [2018-12-02 19:25:24,960 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/data/4a0c0a99b/7a3b8ee73c3244a3835750f2626b2779 [2018-12-02 19:25:24,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 19:25:24,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 19:25:24,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 19:25:24,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 19:25:24,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 19:25:24,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:25:24" (1/1) ... [2018-12-02 19:25:24,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50978cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:24, skipping insertion in model container [2018-12-02 19:25:24,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:25:24" (1/1) ... [2018-12-02 19:25:24,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 19:25:24,994 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 19:25:25,162 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:25:25,210 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 19:25:25,242 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:25:25,267 INFO L195 MainTranslator]: Completed translation [2018-12-02 19:25:25,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25 WrapperNode [2018-12-02 19:25:25,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 19:25:25,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 19:25:25,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 19:25:25,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 19:25:25,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 19:25:25,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 19:25:25,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 19:25:25,296 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 19:25:25,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 19:25:25,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 19:25:25,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 19:25:25,315 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 19:25:25,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:25:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 19:25:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 19:25:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 19:25:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-02 19:25:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-02 19:25:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 19:25:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 19:25:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 19:25:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-02 19:25:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 19:25:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 19:25:25,704 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 19:25:25,704 INFO L280 CfgBuilder]: Removed 12 assue(true) statements. [2018-12-02 19:25:25,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:25:25 BoogieIcfgContainer [2018-12-02 19:25:25,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 19:25:25,705 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-02 19:25:25,705 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-02 19:25:25,712 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-02 19:25:25,712 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:25:25" (1/1) ... [2018-12-02 19:25:25,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:25:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2018-12-02 19:25:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2018-12-02 19:25:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 19:25:25,749 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:25:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 21 transitions. [2018-12-02 19:25:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2018-12-02 19:25:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 19:25:25,908 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 19:25:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 18 states and 23 transitions. [2018-12-02 19:25:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2018-12-02 19:25:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 19:25:26,047 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 19:25:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 19 states and 24 transitions. [2018-12-02 19:25:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2018-12-02 19:25:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 19:25:26,161 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 19:25:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 26 states and 44 transitions. [2018-12-02 19:25:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 44 transitions. [2018-12-02 19:25:29,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 19:25:29,103 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 19:25:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 32 states and 61 transitions. [2018-12-02 19:25:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 61 transitions. [2018-12-02 19:25:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 19:25:32,609 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-02 19:25:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 34 states and 65 transitions. [2018-12-02 19:25:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 65 transitions. [2018-12-02 19:25:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 19:25:33,199 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 19:25:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:25:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-02 19:25:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 19:25:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 16 states and 16 transitions. [2018-12-02 19:25:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-02 19:25:33,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 19:25:33,565 WARN L428 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2018-12-02 19:25:33,572 INFO L779 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2018-12-02 19:25:33,639 INFO L583 CodeCheckObserver]: Invariant with dag size 1 [2018-12-02 19:25:33,641 INFO L583 CodeCheckObserver]: Invariant with dag size 1 [2018-12-02 19:25:33,641 INFO L583 CodeCheckObserver]: Invariant with dag size 1 [2018-12-02 19:25:33,641 INFO L583 CodeCheckObserver]: Invariant with dag size 1 [2018-12-02 19:25:33,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 07:25:33 ImpRootNode [2018-12-02 19:25:33,642 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-02 19:25:33,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 19:25:33,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 19:25:33,642 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 19:25:33,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:25:25" (3/4) ... [2018-12-02 19:25:33,645 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 19:25:33,649 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2018-12-02 19:25:33,651 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-02 19:25:33,652 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-02 19:25:33,652 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 19:25:33,682 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2c7d9ab1-7ac1-4444-9517-a564f681f8e3/bin-2019/ukojak/witness.graphml [2018-12-02 19:25:33,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 19:25:33,683 INFO L168 Benchmark]: Toolchain (without parser) took 8719.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2018-12-02 19:25:33,683 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:25:33,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2018-12-02 19:25:33,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 19:25:33,684 INFO L168 Benchmark]: Boogie Preprocessor took 18.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:25:33,685 INFO L168 Benchmark]: RCFGBuilder took 389.81 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: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. [2018-12-02 19:25:33,685 INFO L168 Benchmark]: CodeCheck took 7936.67 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -69.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:25:33,685 INFO L168 Benchmark]: Witness Printer took 40.27 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. [2018-12-02 19:25:33,686 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, 27 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 8 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1376 SDtfs, 648 SDslu, 384 SDs, 0 SdLazy, 4250 SolverSat, 1106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1241 GetRequests, 1092 SyntacticMatches, 21 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5481 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 12488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 49/60 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: 616]: 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: 577]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 603]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 608]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 603]: Loop Invariant Derived loop invariant: 1 * 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 389.81 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: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. * CodeCheck took 7936.67 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -69.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 40.27 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. RESULT: Ultimate proved your program to be correct! Received shutdown request...