./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc .......................................................................................................................................................................................................................................................................... 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 0.1.24-2e94e6a [2018-12-31 04:25:38,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:25:38,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:25:38,827 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:25:38,828 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:25:38,829 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:25:38,832 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:25:38,834 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:25:38,836 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:25:38,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:25:38,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:25:38,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:25:38,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:25:38,840 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:25:38,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:25:38,842 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:25:38,843 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:25:38,845 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:25:38,847 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:25:38,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:25:38,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:25:38,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:25:38,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:25:38,854 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:25:38,854 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:25:38,855 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:25:38,856 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:25:38,857 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:25:38,858 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:25:38,859 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:25:38,859 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:25:38,860 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:25:38,860 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:25:38,860 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:25:38,861 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:25:38,862 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:25:38,862 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:25:38,884 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:25:38,885 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:25:38,886 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:25:38,886 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:25:38,886 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:25:38,887 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:25:38,890 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:25:38,890 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:25:38,890 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:25:38,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:25:38,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:25:38,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:25:38,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:25:38,891 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:25:38,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:25:38,892 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:25:38,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:25:38,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:25:38,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:25:38,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:25:38,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:25:38,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:25:38,894 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:25:38,894 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:25:38,894 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:25:38,895 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:25:38,895 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:25:38,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:25:38,895 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc [2018-12-31 04:25:38,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:25:38,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:25:38,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:25:38,963 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:25:38,964 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:25:38,964 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i [2018-12-31 04:25:39,035 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbd7ff1e/79996e59fe524bcc919fb1c42177fe68/FLAGeca2c101d [2018-12-31 04:25:39,639 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:25:39,640 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i [2018-12-31 04:25:39,653 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbd7ff1e/79996e59fe524bcc919fb1c42177fe68/FLAGeca2c101d [2018-12-31 04:25:39,881 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbd7ff1e/79996e59fe524bcc919fb1c42177fe68 [2018-12-31 04:25:39,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:25:39,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:25:39,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:25:39,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:25:39,904 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:25:39,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:25:39" (1/1) ... [2018-12-31 04:25:39,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d195567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:39, skipping insertion in model container [2018-12-31 04:25:39,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:25:39" (1/1) ... [2018-12-31 04:25:39,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:25:39,986 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:25:40,345 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:25:40,368 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:25:40,534 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:25:40,591 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:25:40,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40 WrapperNode [2018-12-31 04:25:40,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:25:40,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:25:40,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:25:40,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:25:40,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:25:40,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:25:40,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:25:40,668 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:25:40,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... [2018-12-31 04:25:40,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:25:40,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:25:40,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:25:40,710 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:25:40,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2018-12-31 04:25:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:25:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:25:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2018-12-31 04:25:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-31 04:25:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-31 04:25:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:25:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:25:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:25:41,346 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:25:41,346 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-31 04:25:41,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:25:41 BoogieIcfgContainer [2018-12-31 04:25:41,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:25:41,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:25:41,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:25:41,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:25:41,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:25:39" (1/3) ... [2018-12-31 04:25:41,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f6ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:25:41, skipping insertion in model container [2018-12-31 04:25:41,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:25:40" (2/3) ... [2018-12-31 04:25:41,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f6ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:25:41, skipping insertion in model container [2018-12-31 04:25:41,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:25:41" (3/3) ... [2018-12-31 04:25:41,356 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-optional_false-unreach-call_false-valid-memcleanup.i [2018-12-31 04:25:41,367 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:25:41,377 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:25:41,396 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:25:41,423 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:25:41,424 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:25:41,424 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:25:41,424 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:25:41,424 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:25:41,425 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:25:41,425 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:25:41,425 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:25:41,425 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:25:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-12-31 04:25:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 04:25:41,446 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:25:41,447 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:25:41,449 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:25:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:25:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1853593862, now seen corresponding path program 1 times [2018-12-31 04:25:41,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:25:41,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:25:41,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:25:41,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:25:41,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:25:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:25:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:25:41,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:25:41,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:25:41,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:25:41,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:25:41,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:25:41,649 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-12-31 04:25:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:25:41,670 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2018-12-31 04:25:41,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:25:41,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-12-31 04:25:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:25:41,685 INFO L225 Difference]: With dead ends: 43 [2018-12-31 04:25:41,686 INFO L226 Difference]: Without dead ends: 18 [2018-12-31 04:25:41,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:25:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-31 04:25:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-31 04:25:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-31 04:25:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2018-12-31 04:25:41,723 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2018-12-31 04:25:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:25:41,724 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-12-31 04:25:41,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:25:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2018-12-31 04:25:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-31 04:25:41,725 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:25:41,725 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:25:41,725 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:25:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:25:41,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2143092324, now seen corresponding path program 1 times [2018-12-31 04:25:41,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:25:41,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:25:41,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:25:41,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:25:41,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:25:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:25:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:25:41,849 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:25:41,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:25:41 BoogieIcfgContainer [2018-12-31 04:25:41,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:25:41,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:25:41,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:25:41,881 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:25:41,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:25:41" (3/4) ... [2018-12-31 04:25:41,885 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:25:41,935 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:25:41,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:25:41,936 INFO L168 Benchmark]: Toolchain (without parser) took 2048.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -60.0 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2018-12-31 04:25:41,938 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:25:41,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-12-31 04:25:41,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.17 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:25:41,940 INFO L168 Benchmark]: Boogie Preprocessor took 42.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:25:41,941 INFO L168 Benchmark]: RCFGBuilder took 637.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:25:41,942 INFO L168 Benchmark]: TraceAbstraction took 531.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-12-31 04:25:41,942 INFO L168 Benchmark]: Witness Printer took 54.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:25:41,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 700.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.17 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 637.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 531.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 54.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 2 [L987] head->opt = malloc(sizeof(SLL)) [L987] EXPR head->opt [L987] head->opt->next = ((void*)0) [L988] SLL* x = head; [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head [L994] COND TRUE x != ((void*)0) [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] EXPR x->opt [L996] EXPR x->data == 2 && x->opt == x [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...