./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue_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_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f369e67185304fce6130a1dfc66e8cb89abf0605 ......................................................................................................................................................................................................................................................................................................... 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 [2018-12-03 06:17:27,926 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 06:17:27,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 06:17:27,933 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 06:17:27,933 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 06:17:27,934 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 06:17:27,935 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 06:17:27,935 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 06:17:27,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 06:17:27,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 06:17:27,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 06:17:27,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 06:17:27,938 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 06:17:27,938 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 06:17:27,939 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 06:17:27,939 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 06:17:27,940 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 06:17:27,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 06:17:27,941 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 06:17:27,942 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 06:17:27,943 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 06:17:27,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 06:17:27,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 06:17:27,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 06:17:27,945 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 06:17:27,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 06:17:27,946 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 06:17:27,946 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 06:17:27,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 06:17:27,947 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 06:17:27,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 06:17:27,948 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 06:17:27,948 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 06:17:27,948 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 06:17:27,948 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 06:17:27,949 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 06:17:27,949 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 06:17:27,956 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 06:17:27,956 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 06:17:27,957 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 06:17:27,957 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 06:17:27,957 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 06:17:27,958 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 06:17:27,958 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 06:17:27,958 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 06:17:27,958 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 06:17:27,958 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 06:17:27,958 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 06:17:27,959 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 06:17:27,959 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 06:17:27,960 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 06:17:27,960 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 06:17:27,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 06:17:27,961 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 06:17:27,961 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan 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 -> Taipan 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 -> f369e67185304fce6130a1dfc66e8cb89abf0605 [2018-12-03 06:17:27,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 06:17:27,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 06:17:27,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 06:17:27,988 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 06:17:27,988 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 06:17:27,988 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2018-12-03 06:17:28,022 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/data/0874bd306/f356422932e1445cb323e0175a7b2b69/FLAG060b93d46 [2018-12-03 06:17:28,484 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 06:17:28,484 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/sv-benchmarks/c/forester-heap/dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2018-12-03 06:17:28,490 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/data/0874bd306/f356422932e1445cb323e0175a7b2b69/FLAG060b93d46 [2018-12-03 06:17:28,499 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/data/0874bd306/f356422932e1445cb323e0175a7b2b69 [2018-12-03 06:17:28,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 06:17:28,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 06:17:28,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 06:17:28,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 06:17:28,507 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 06:17:28,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159e01e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28, skipping insertion in model container [2018-12-03 06:17:28,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 06:17:28,542 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 06:17:28,712 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:17:28,718 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 06:17:28,776 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:17:28,797 INFO L195 MainTranslator]: Completed translation [2018-12-03 06:17:28,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28 WrapperNode [2018-12-03 06:17:28,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 06:17:28,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 06:17:28,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 06:17:28,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 06:17:28,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 06:17:28,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 06:17:28,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 06:17:28,815 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 06:17:28,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... [2018-12-03 06:17:28,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 06:17:28,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 06:17:28,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 06:17:28,835 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 06:17:28,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/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 [2018-12-03 06:17:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 06:17:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 06:17:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 06:17:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 06:17:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 06:17:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 06:17:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 06:17:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 06:17:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 06:17:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 06:17:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 06:17:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 06:17:29,054 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 06:17:29,054 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-03 06:17:29,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:29 BoogieIcfgContainer [2018-12-03 06:17:29,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 06:17:29,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 06:17:29,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 06:17:29,057 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 06:17:29,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 06:17:28" (1/3) ... [2018-12-03 06:17:29,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93139a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:17:29, skipping insertion in model container [2018-12-03 06:17:29,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:17:28" (2/3) ... [2018-12-03 06:17:29,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93139a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:17:29, skipping insertion in model container [2018-12-03 06:17:29,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:29" (3/3) ... [2018-12-03 06:17:29,059 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2018-12-03 06:17:29,064 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 06:17:29,068 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 06:17:29,077 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 06:17:29,093 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 06:17:29,093 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 06:17:29,093 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 06:17:29,093 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 06:17:29,093 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 06:17:29,093 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 06:17:29,093 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 06:17:29,093 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 06:17:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-03 06:17:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-03 06:17:29,106 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:17:29,107 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:17:29,108 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:17:29,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:17:29,111 INFO L82 PathProgramCache]: Analyzing trace with hash -445630561, now seen corresponding path program 1 times [2018-12-03 06:17:29,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:17:29,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:17:29,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:17:29,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:17:29,144 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:17:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:17:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:17:29,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:17:29,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 06:17:29,192 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:17:29,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 06:17:29,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 06:17:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 06:17:29,203 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-03 06:17:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:17:29,215 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2018-12-03 06:17:29,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 06:17:29,216 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-12-03 06:17:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:17:29,221 INFO L225 Difference]: With dead ends: 55 [2018-12-03 06:17:29,221 INFO L226 Difference]: Without dead ends: 24 [2018-12-03 06:17:29,223 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 [2018-12-03 06:17:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-03 06:17:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-03 06:17:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-03 06:17:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-12-03 06:17:29,243 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2018-12-03 06:17:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:17:29,243 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-12-03 06:17:29,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 06:17:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2018-12-03 06:17:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 06:17:29,244 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:17:29,244 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:17:29,244 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:17:29,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:17:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash -640042354, now seen corresponding path program 1 times [2018-12-03 06:17:29,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:17:29,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:17:29,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:17:29,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:17:29,246 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:17:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:17:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:17:29,291 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 06:17:29,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:17:29 BoogieIcfgContainer [2018-12-03 06:17:29,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 06:17:29,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 06:17:29,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 06:17:29,308 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 06:17:29,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:29" (3/4) ... [2018-12-03 06:17:29,309 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 06:17:29,334 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2bc72a23-87d2-454c-833e-f9207854b8d7/bin-2019/utaipan/witness.graphml [2018-12-03 06:17:29,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 06:17:29,335 INFO L168 Benchmark]: Toolchain (without parser) took 832.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -99.6 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2018-12-03 06:17:29,336 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-12-03 06:17:29,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2018-12-03 06:17:29,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.93 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-03 06:17:29,337 INFO L168 Benchmark]: Boogie Preprocessor took 19.83 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. [2018-12-03 06:17:29,337 INFO L168 Benchmark]: RCFGBuilder took 220.21 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: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 11.5 GB. [2018-12-03 06:17:29,337 INFO L168 Benchmark]: TraceAbstraction took 252.15 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-03 06:17:29,337 INFO L168 Benchmark]: Witness Printer took 27.06 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-03 06:17:29,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 293.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.93 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.83 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 220.21 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: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 252.15 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Witness Printer took 27.06 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1052]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L989] SLL* head = malloc(sizeof(SLL)); [L990] head->next = ((void*)0) [L991] head->prev = ((void*)0) [L992] head->data = 0 [L994] SLL* x = head; VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, x={21:0}] [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] x = malloc(sizeof(SLL)) [L1010] x->data = 1 [L1011] x->next = head [L1012] x->prev = ((void*)0) [L1013] head = x VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={18:0}] [L1039] x = head VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={18:0}] [L1042] EXPR x->data VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={18:0}, x->data=1] [L1042] COND FALSE !(x->data != 1) [L1048] EXPR x->next [L1048] x = x->next [L1049] COND TRUE \read(*x) [L1051] EXPR x->data VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={21:0}, x->data=0] [L1051] COND TRUE x->data != 1 [L1052] __VERIFIER_error() VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={21:0}, x={21:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 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=32occurred 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, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 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...