./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.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_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/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 a74485b04ec8988328f8bc8f67ebe898d81e7141 ......................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-01 19:26:56,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 19:26:56,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 19:26:56,058 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 19:26:56,059 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 19:26:56,059 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 19:26:56,060 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 19:26:56,061 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 19:26:56,061 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 19:26:56,062 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 19:26:56,062 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 19:26:56,062 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 19:26:56,063 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 19:26:56,063 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 19:26:56,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 19:26:56,064 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 19:26:56,065 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 19:26:56,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 19:26:56,066 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 19:26:56,067 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 19:26:56,068 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 19:26:56,068 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 19:26:56,069 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 19:26:56,070 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 19:26:56,070 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 19:26:56,070 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 19:26:56,071 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 19:26:56,071 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 19:26:56,071 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 19:26:56,072 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 19:26:56,072 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 19:26:56,072 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 19:26:56,072 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 19:26:56,073 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 19:26:56,073 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 19:26:56,073 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 19:26:56,074 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-01 19:26:56,081 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 19:26:56,081 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 19:26:56,081 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 19:26:56,081 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-01 19:26:56,082 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 19:26:56,082 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 19:26:56,082 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 19:26:56,082 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 19:26:56,082 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 19:26:56,082 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 19:26:56,082 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 19:26:56,082 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 19:26:56,083 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-01 19:26:56,083 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 19:26:56,083 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 19:26:56,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-01 19:26:56,084 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 19:26:56,084 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 19:26:56,084 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 19:26:56,084 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-01 19:26:56,084 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 19:26:56,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 19:26:56,084 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_4e163477-273c-4868-827c-91ffa5b8ade6/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 -> a74485b04ec8988328f8bc8f67ebe898d81e7141 [2018-12-01 19:26:56,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 19:26:56,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 19:26:56,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 19:26:56,111 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 19:26:56,111 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 19:26:56,111 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/../../sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i [2018-12-01 19:26:56,147 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/data/d862f7c84/5c32dc1f0fe84e6ca6716183edd5a21a/FLAG7fadfdda2 [2018-12-01 19:26:56,621 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 19:26:56,621 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i [2018-12-01 19:26:56,627 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/data/d862f7c84/5c32dc1f0fe84e6ca6716183edd5a21a/FLAG7fadfdda2 [2018-12-01 19:26:57,131 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/data/d862f7c84/5c32dc1f0fe84e6ca6716183edd5a21a [2018-12-01 19:26:57,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 19:26:57,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 19:26:57,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 19:26:57,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 19:26:57,137 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 19:26:57,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35059e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57, skipping insertion in model container [2018-12-01 19:26:57,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 19:26:57,165 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 19:26:57,306 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 19:26:57,312 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 19:26:57,385 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 19:26:57,405 INFO L195 MainTranslator]: Completed translation [2018-12-01 19:26:57,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57 WrapperNode [2018-12-01 19:26:57,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 19:26:57,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 19:26:57,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 19:26:57,406 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 19:26:57,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 19:26:57,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 19:26:57,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 19:26:57,432 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 19:26:57,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 19:26:57,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 19:26:57,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 19:26:57,448 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 19:26:57,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:26:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/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 [2018-12-01 19:26:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 19:26:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 19:26:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 19:26:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 19:26:57,685 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 19:26:57,685 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-01 19:26:57,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:26:57 BoogieIcfgContainer [2018-12-01 19:26:57,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 19:26:57,686 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-01 19:26:57,686 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-01 19:26:57,693 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-01 19:26:57,693 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:26:57" (1/1) ... [2018-12-01 19:26:57,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:26:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 19:26:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2018-12-01 19:26:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2018-12-01 19:26:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 19:26:57,726 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 19:26:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:26:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:26:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 19:26:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2018-12-01 19:26:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2018-12-01 19:26:57,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 19:26:57,799 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 19:26:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:26:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:26:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 19:26:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 29 states and 38 transitions. [2018-12-01 19:26:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2018-12-01 19:26:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 19:26:57,851 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 19:26:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:26:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:26:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 19:26:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2018-12-01 19:26:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2018-12-01 19:26:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 19:26:58,023 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 19:26:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:26:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:26:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:26:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:26:58,098 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2018-12-01 19:26:58,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 07:26:58 ImpRootNode [2018-12-01 19:26:58,124 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-01 19:26:58,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 19:26:58,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 19:26:58,125 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 19:26:58,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:26:57" (3/4) ... [2018-12-01 19:26:58,127 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 19:26:58,164 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4e163477-273c-4868-827c-91ffa5b8ade6/bin-2019/ukojak/witness.graphml [2018-12-01 19:26:58,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 19:26:58,165 INFO L168 Benchmark]: Toolchain (without parser) took 1031.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 950.6 MB in the beginning and 1.0 GB in the end (delta: -92.4 MB). Peak memory consumption was 62.8 MB. Max. memory is 11.5 GB. [2018-12-01 19:26:58,166 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-12-01 19:26:58,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2018-12-01 19:26:58,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.01 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. [2018-12-01 19:26:58,167 INFO L168 Benchmark]: Boogie Preprocessor took 16.15 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-01 19:26:58,167 INFO L168 Benchmark]: RCFGBuilder took 238.04 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2018-12-01 19:26:58,167 INFO L168 Benchmark]: CodeCheck took 438.08 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: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 11.5 GB. [2018-12-01 19:26:58,168 INFO L168 Benchmark]: Witness Printer took 40.11 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-01 19:26:58,169 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, 32 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 110 SDtfs, 24 SDslu, 32 SDs, 0 SdLazy, 52 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 668]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = 1; [L628] List a = (List) malloc(sizeof(struct node)); [L629] COND FALSE !(a == 0) [L630] List t; [L631] List p = a; [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] p->h = 2 [L635] flag = 0 [L640] t = (List) malloc(sizeof(struct node)) [L641] COND FALSE !(t == 0) [L642] p->n = t [L643] EXPR p->n [L643] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L645] p->h = 3 [L646] p = a [L647] flag = 1 [L648] EXPR p->h [L648] COND TRUE p->h != 3 [L649] COND TRUE \read(flag) [L650] flag = 0 [L651] EXPR p->h [L651] COND TRUE p->h != 1 [L668] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 271.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.15 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 238.04 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * CodeCheck took 438.08 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: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 11.5 GB. * Witness Printer took 40.11 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...