./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-01_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-01_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/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 b7feccaf382e9f358fe7bd48bccc9b98dfa2aebd ................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:06:56,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:06:56,481 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:06:56,490 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:06:56,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:06:56,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:06:56,492 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:06:56,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:06:56,496 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:06:56,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:06:56,497 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:06:56,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:06:56,498 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:06:56,499 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:06:56,500 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:06:56,501 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:06:56,502 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:06:56,503 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:06:56,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:06:56,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:06:56,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:06:56,508 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:06:56,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:06:56,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:06:56,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:06:56,512 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:06:56,512 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:06:56,513 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:06:56,514 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:06:56,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:06:56,515 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:06:56,516 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:06:56,516 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:06:56,516 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:06:56,517 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:06:56,518 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:06:56,518 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 16:06:56,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:06:56,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:06:56,531 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:06:56,531 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 16:06:56,532 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:06:56,532 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:06:56,532 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:06:56,532 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:06:56,533 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:06:56,533 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:06:56,533 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:06:56,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:06:56,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:06:56,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:06:56,534 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:06:56,534 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:06:56,534 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:06:56,534 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:06:56,534 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 16:06:56,534 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 16:06:56,535 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:06:56,535 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:06:56,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 16:06:56,535 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:06:56,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:06:56,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:06:56,537 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 16:06:56,538 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:06:56,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:06:56,538 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_e74aca66-33b5-4084-a37f-d37f33753643/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 -> b7feccaf382e9f358fe7bd48bccc9b98dfa2aebd [2018-11-18 16:06:56,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:06:56,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:06:56,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:06:56,580 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:06:56,581 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:06:56,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/dll-01_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:06:56,634 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/data/47e99b790/c1f488447bed40f987b734fda7c60a32/FLAG684aa7db9 [2018-11-18 16:06:57,075 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:06:57,076 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/sv-benchmarks/c/forester-heap/dll-01_false-unreach-call_false-valid-memcleanup.i [2018-11-18 16:06:57,086 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/data/47e99b790/c1f488447bed40f987b734fda7c60a32/FLAG684aa7db9 [2018-11-18 16:06:57,098 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/data/47e99b790/c1f488447bed40f987b734fda7c60a32 [2018-11-18 16:06:57,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:06:57,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:06:57,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:06:57,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:06:57,106 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:06:57,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a6a72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57, skipping insertion in model container [2018-11-18 16:06:57,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:06:57,154 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:06:57,401 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:06:57,408 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:06:57,447 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:06:57,479 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:06:57,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57 WrapperNode [2018-11-18 16:06:57,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:06:57,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:06:57,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:06:57,481 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:06:57,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:06:57,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:06:57,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:06:57,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:06:57,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... [2018-11-18 16:06:57,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:06:57,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:06:57,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:06:57,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:06:57,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:06:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 16:06:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:06:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:06:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:06:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:06:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:06:57,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:06:58,430 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:06:58,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:06:58 BoogieIcfgContainer [2018-11-18 16:06:58,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:06:58,431 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 16:06:58,431 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 16:06:58,437 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 16:06:58,437 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:06:58" (1/1) ... [2018-11-18 16:06:58,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:06:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 85 states and 132 transitions. [2018-11-18 16:06:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 132 transitions. [2018-11-18 16:06:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-11-18 16:06:58,482 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 83 states and 127 transitions. [2018-11-18 16:06:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 127 transitions. [2018-11-18 16:06:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 16:06:58,694 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 81 states and 122 transitions. [2018-11-18 16:06:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 122 transitions. [2018-11-18 16:06:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 16:06:58,821 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 81 states and 119 transitions. [2018-11-18 16:06:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2018-11-18 16:06:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 16:06:59,338 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 86 states and 124 transitions. [2018-11-18 16:06:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 124 transitions. [2018-11-18 16:06:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 16:06:59,472 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 84 states and 119 transitions. [2018-11-18 16:06:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2018-11-18 16:06:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:06:59,563 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 84 states and 114 transitions. [2018-11-18 16:06:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 114 transitions. [2018-11-18 16:06:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:06:59,597 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 82 states and 110 transitions. [2018-11-18 16:06:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2018-11-18 16:06:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:06:59,748 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:06:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:06:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:06:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 86 states and 116 transitions. [2018-11-18 16:06:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2018-11-18 16:06:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:06:59,893 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:06:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:07:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:07:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:07:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 84 states and 111 transitions. [2018-11-18 16:07:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 111 transitions. [2018-11-18 16:07:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 16:07:00,097 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:07:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:07:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:07:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:07:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 87 states and 111 transitions. [2018-11-18 16:07:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2018-11-18 16:07:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 16:07:00,157 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:07:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:07:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:07:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:07:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 102 states and 131 transitions. [2018-11-18 16:07:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2018-11-18 16:07:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:07:03,322 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:07:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:07:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:07:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:07:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 112 states and 142 transitions. [2018-11-18 16:07:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2018-11-18 16:07:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:07:04,362 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:07:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:07:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:07:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:07:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 94 states and 120 transitions. [2018-11-18 16:07:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-18 16:07:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 16:07:04,792 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:07:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:07:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:07:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:07:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:07:04,949 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2018-11-18 16:07:05,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 04:07:05 ImpRootNode [2018-11-18 16:07:05,012 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 16:07:05,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:07:05,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:07:05,013 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:07:05,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:06:58" (3/4) ... [2018-11-18 16:07:05,014 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:07:05,071 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e74aca66-33b5-4084-a37f-d37f33753643/bin-2019/ukojak/witness.graphml [2018-11-18 16:07:05,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:07:05,072 INFO L168 Benchmark]: Toolchain (without parser) took 7970.51 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 305.7 MB). Free memory was 955.9 MB in the beginning and 1.3 GB in the end (delta: -294.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:07:05,073 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:07:05,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.55 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 934.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:07:05,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -211.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:07:05,074 INFO L168 Benchmark]: Boogie Preprocessor took 78.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:07:05,074 INFO L168 Benchmark]: RCFGBuilder took 747.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:07:05,075 INFO L168 Benchmark]: CodeCheck took 6581.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 148.9 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -159.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:07:05,075 INFO L168 Benchmark]: Witness Printer took 58.57 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:07:05,079 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 94 locations, 13 error locations. UNSAFE Result, 6.4s OverallTime, 14 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63208 SDtfs, 53626 SDslu, 52310 SDs, 0 SdLazy, 101940 SolverSat, 42264 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1706 GetRequests, 1617 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2418 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 233 ConstructedInterpolants, 0 QuantifiedInterpolants, 33457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] EXPR, FCALL malloc(sizeof(SLL)) [L992] SLL* list = malloc(sizeof(SLL)); [L993] FCALL list->next = ((void*)0) [L994] FCALL list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(0) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] EXPR, FCALL malloc(sizeof(SLL)) [L995] FCALL list->inner = malloc(sizeof(SLL)) [L995] EXPR, FCALL list->inner [L995] FCALL list->inner->next = ((void*)0) [L995] EXPR, FCALL list->inner [L995] FCALL list->inner->inner = ((void*)0) [L995] EXPR, FCALL list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] COND FALSE !(0) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1015] COND FALSE !(0) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR, FCALL end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1027] COND FALSE !(0) [L1028] EXPR, FCALL inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1028] COND FALSE !(0) [L1029] EXPR, FCALL inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 377.55 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 934.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 122.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -211.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.64 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. * RCFGBuilder took 747.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * CodeCheck took 6581.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 148.9 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -159.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 58.57 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...