./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_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/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_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/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 [2018-10-27 01:00:40,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 01:00:40,519 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 01:00:40,529 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 01:00:40,529 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 01:00:40,530 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 01:00:40,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 01:00:40,533 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 01:00:40,534 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 01:00:40,534 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 01:00:40,536 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 01:00:40,536 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 01:00:40,537 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 01:00:40,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 01:00:40,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 01:00:40,539 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 01:00:40,540 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 01:00:40,542 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 01:00:40,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 01:00:40,545 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 01:00:40,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 01:00:40,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 01:00:40,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 01:00:40,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 01:00:40,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 01:00:40,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 01:00:40,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 01:00:40,553 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 01:00:40,554 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 01:00:40,555 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 01:00:40,555 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 01:00:40,555 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 01:00:40,555 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 01:00:40,555 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 01:00:40,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 01:00:40,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 01:00:40,557 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-10-27 01:00:40,573 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 01:00:40,574 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 01:00:40,574 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 01:00:40,574 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 01:00:40,577 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 01:00:40,577 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 01:00:40,578 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 01:00:40,578 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 01:00:40,578 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 01:00:40,578 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 01:00:40,578 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 01:00:40,578 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 01:00:40,578 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 01:00:40,579 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 01:00:40,579 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 01:00:40,579 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 01:00:40,579 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 01:00:40,579 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-27 01:00:40,579 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-27 01:00:40,579 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-27 01:00:40,580 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 01:00:40,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 01:00:40,581 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_0b5b5018-3072-4ba0-af4e-3e47d7551849/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 [2018-10-27 01:00:40,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 01:00:40,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 01:00:40,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 01:00:40,620 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 01:00:40,621 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 01:00:40,621 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-10-27 01:00:40,670 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/data/5a78e7a3d/9a079095a9d64dc39b36b3ab64d33e69/FLAG137080b3a [2018-10-27 01:00:41,112 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 01:00:41,112 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-10-27 01:00:41,123 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/data/5a78e7a3d/9a079095a9d64dc39b36b3ab64d33e69/FLAG137080b3a [2018-10-27 01:00:41,137 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/data/5a78e7a3d/9a079095a9d64dc39b36b3ab64d33e69 [2018-10-27 01:00:41,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 01:00:41,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 01:00:41,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 01:00:41,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 01:00:41,145 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 01:00:41,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc0390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41, skipping insertion in model container [2018-10-27 01:00:41,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 01:00:41,190 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 01:00:41,433 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:00:41,441 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 01:00:41,483 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:00:41,521 INFO L193 MainTranslator]: Completed translation [2018-10-27 01:00:41,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41 WrapperNode [2018-10-27 01:00:41,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 01:00:41,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 01:00:41,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 01:00:41,523 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 01:00:41,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 01:00:41,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 01:00:41,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 01:00:41,642 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 01:00:41,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... [2018-10-27 01:00:41,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 01:00:41,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 01:00:41,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 01:00:41,673 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 01:00:41,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:00:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/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 [2018-10-27 01:00:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 01:00:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-27 01:00:41,726 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-10-27 01:00:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 01:00:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-10-27 01:00:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-10-27 01:00:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 01:00:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 01:00:42,828 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 01:00:42,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:00:42 BoogieIcfgContainer [2018-10-27 01:00:42,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 01:00:42,830 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-27 01:00:42,830 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-27 01:00:42,839 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-27 01:00:42,839 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:00:42" (1/1) ... [2018-10-27 01:00:42,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:00:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-27 01:00:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2018-10-27 01:00:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2018-10-27 01:00:42,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 01:00:42,883 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-27 01:00:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:00:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:00:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-27 01:00:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 29 states and 36 transitions. [2018-10-27 01:00:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2018-10-27 01:00:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 01:00:43,002 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-27 01:00:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:00:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:00:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-27 01:00:43,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 31 states and 39 transitions. [2018-10-27 01:00:43,190 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-10-27 01:00:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 01:00:43,190 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-27 01:00:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:00:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 01:00:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-27 01:00:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 33 states and 42 transitions. [2018-10-27 01:00:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2018-10-27 01:00:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 01:00:43,845 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-27 01:00:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:00:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 01:00:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-27 01:00:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 33 states and 41 transitions. [2018-10-27 01:00:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2018-10-27 01:00:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 01:00:43,887 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-27 01:00:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:00:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 01:00:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-27 01:00:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 27 states and 33 transitions. [2018-10-27 01:00:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2018-10-27 01:00:44,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 01:00:44,373 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2018-10-27 01:00:44,383 INFO L778 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2018-10-27 01:00:44,622 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-10-27 01:00:44,700 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-10-27 01:00:44,703 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-10-27 01:00:44,703 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-10-27 01:00:44,713 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-10-27 01:00:44,716 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-10-27 01:00:44,716 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-10-27 01:00:44,716 INFO L582 CodeCheckObserver]: Invariant with dag size 3 [2018-10-27 01:00:44,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 27.10 01:00:44 ImpRootNode [2018-10-27 01:00:44,718 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-10-27 01:00:44,720 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 01:00:44,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 01:00:44,721 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 01:00:44,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:00:42" (3/4) ... [2018-10-27 01:00:44,726 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 01:00:44,743 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure exit [2018-10-27 01:00:44,753 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2018-10-27 01:00:44,755 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-27 01:00:44,756 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 01:00:44,756 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 01:00:44,820 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0b5b5018-3072-4ba0-af4e-3e47d7551849/bin-2019/ukojak/witness.graphml [2018-10-27 01:00:44,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 01:00:44,822 INFO L168 Benchmark]: Toolchain (without parser) took 3681.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -80.6 MB). Peak memory consumption was 77.2 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,822 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 01:00:44,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 932.2 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 932.2 MB in the beginning and 1.2 GB in the end (delta: -221.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,824 INFO L168 Benchmark]: Boogie Preprocessor took 32.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,825 INFO L168 Benchmark]: RCFGBuilder took 1156.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,825 INFO L168 Benchmark]: CodeCheck took 1889.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,826 INFO L168 Benchmark]: Witness Printer took 100.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 01:00:44,830 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, 1.5s 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, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 620 GetRequests, 595 SyntacticMatches, 9 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s 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 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 932.2 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 117.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 932.2 MB in the beginning and 1.2 GB in the end (delta: -221.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1156.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * CodeCheck took 1889.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. * Witness Printer took 100.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...