./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-token_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_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-token_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/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 60dcf5da7f0124de96473d8010137f60c5cb2803 ................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:47:00,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 06:47:00,254 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 06:47:00,260 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 06:47:00,260 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 06:47:00,261 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 06:47:00,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 06:47:00,262 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 06:47:00,263 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 06:47:00,263 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 06:47:00,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 06:47:00,264 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 06:47:00,264 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 06:47:00,265 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 06:47:00,265 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 06:47:00,266 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 06:47:00,266 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 06:47:00,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 06:47:00,268 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 06:47:00,269 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 06:47:00,269 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 06:47:00,270 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 06:47:00,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 06:47:00,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 06:47:00,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 06:47:00,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 06:47:00,272 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 06:47:00,273 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 06:47:00,273 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 06:47:00,274 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 06:47:00,274 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 06:47:00,274 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 06:47:00,274 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 06:47:00,275 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 06:47:00,275 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 06:47:00,275 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 06:47:00,275 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 06:47:00,283 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 06:47:00,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 06:47:00,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 06:47:00,284 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 06:47:00,284 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 06:47:00,285 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 06:47:00,285 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 06:47:00,285 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 06:47:00,285 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 06:47:00,285 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 06:47:00,285 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 06:47:00,285 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 06:47:00,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 06:47:00,286 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 06:47:00,286 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 06:47:00,287 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 06:47:00,287 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 06:47:00,287 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 06:47:00,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 06:47:00,287 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 06:47:00,287 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_67423e0e-b590-4fe9-bbd0-8438bf9458dc/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 -> 60dcf5da7f0124de96473d8010137f60c5cb2803 [2018-12-03 06:47:00,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 06:47:00,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 06:47:00,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 06:47:00,318 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 06:47:00,318 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 06:47:00,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/../../sv-benchmarks/c/forester-heap/sll-token_false-unreach-call_false-valid-memcleanup.i [2018-12-03 06:47:00,364 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/data/8d7bfd3d2/510d861b521e4a66a61e3fc67ce93714/FLAG6f3ab8079 [2018-12-03 06:47:00,810 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 06:47:00,811 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/sv-benchmarks/c/forester-heap/sll-token_false-unreach-call_false-valid-memcleanup.i [2018-12-03 06:47:00,816 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/data/8d7bfd3d2/510d861b521e4a66a61e3fc67ce93714/FLAG6f3ab8079 [2018-12-03 06:47:00,825 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/data/8d7bfd3d2/510d861b521e4a66a61e3fc67ce93714 [2018-12-03 06:47:00,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 06:47:00,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 06:47:00,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 06:47:00,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 06:47:00,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 06:47:00,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:47:00" (1/1) ... [2018-12-03 06:47:00,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198b87e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:00, skipping insertion in model container [2018-12-03 06:47:00,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:47:00" (1/1) ... [2018-12-03 06:47:00,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 06:47:00,867 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 06:47:01,044 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:47:01,080 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 06:47:01,102 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:47:01,122 INFO L195 MainTranslator]: Completed translation [2018-12-03 06:47:01,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01 WrapperNode [2018-12-03 06:47:01,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 06:47:01,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 06:47:01,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 06:47:01,123 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 06:47:01,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 06:47:01,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 06:47:01,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 06:47:01,140 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 06:47:01,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... [2018-12-03 06:47:01,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 06:47:01,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 06:47:01,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 06:47:01,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 06:47:01,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/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 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 06:47:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 06:47:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 06:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 06:47:01,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 06:47:01,354 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 06:47:01,355 INFO L280 CfgBuilder]: Removed 15 assue(true) statements. [2018-12-03 06:47:01,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:47:01 BoogieIcfgContainer [2018-12-03 06:47:01,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 06:47:01,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 06:47:01,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 06:47:01,357 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 06:47:01,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 06:47:00" (1/3) ... [2018-12-03 06:47:01,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8883ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:47:01, skipping insertion in model container [2018-12-03 06:47:01,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:47:01" (2/3) ... [2018-12-03 06:47:01,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8883ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:47:01, skipping insertion in model container [2018-12-03 06:47:01,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:47:01" (3/3) ... [2018-12-03 06:47:01,359 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token_false-unreach-call_false-valid-memcleanup.i [2018-12-03 06:47:01,365 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 06:47:01,369 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-03 06:47:01,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-03 06:47:01,394 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 06:47:01,394 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 06:47:01,395 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 06:47:01,395 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 06:47:01,395 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 06:47:01,395 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 06:47:01,395 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 06:47:01,395 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 06:47:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-12-03 06:47:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 06:47:01,408 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:47:01,408 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:47:01,409 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:47:01,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:47:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash 71293511, now seen corresponding path program 1 times [2018-12-03 06:47:01,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:47:01,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:47:01,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,447 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:47:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:47:01,493 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 06:47:01,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:47:01,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 06:47:01,494 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:47:01,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 06:47:01,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 06:47:01,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 06:47:01,506 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-12-03 06:47:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:47:01,518 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2018-12-03 06:47:01,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 06:47:01,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-03 06:47:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:47:01,525 INFO L225 Difference]: With dead ends: 92 [2018-12-03 06:47:01,525 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 06:47:01,527 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 06:47:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 06:47:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-03 06:47:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-03 06:47:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-12-03 06:47:01,547 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2018-12-03 06:47:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:47:01,547 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-12-03 06:47:01,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 06:47:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-12-03 06:47:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 06:47:01,548 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:47:01,548 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:47:01,548 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:47:01,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:47:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash 70526890, now seen corresponding path program 1 times [2018-12-03 06:47:01,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:47:01,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:47:01,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,550 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:47:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:47:01,591 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 06:47:01,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:47:01,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 06:47:01,591 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:47:01,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 06:47:01,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 06:47:01,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 06:47:01,592 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 3 states. [2018-12-03 06:47:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:47:01,632 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-12-03 06:47:01,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 06:47:01,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-03 06:47:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:47:01,633 INFO L225 Difference]: With dead ends: 43 [2018-12-03 06:47:01,634 INFO L226 Difference]: Without dead ends: 41 [2018-12-03 06:47:01,634 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 06:47:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-03 06:47:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-03 06:47:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-03 06:47:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-12-03 06:47:01,637 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2018-12-03 06:47:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:47:01,637 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-12-03 06:47:01,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 06:47:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-12-03 06:47:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 06:47:01,638 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:47:01,638 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:47:01,638 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:47:01,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:47:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2108677217, now seen corresponding path program 1 times [2018-12-03 06:47:01,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:47:01,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:47:01,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:47:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:47:01,674 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 06:47:01,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:47:01,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:47:01,675 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:47:01,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:47:01,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:47:01,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:47:01,675 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 4 states. [2018-12-03 06:47:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:47:01,715 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-12-03 06:47:01,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:47:01,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-03 06:47:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:47:01,716 INFO L225 Difference]: With dead ends: 67 [2018-12-03 06:47:01,716 INFO L226 Difference]: Without dead ends: 65 [2018-12-03 06:47:01,716 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 06:47:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-03 06:47:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2018-12-03 06:47:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-03 06:47:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-12-03 06:47:01,719 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2018-12-03 06:47:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:47:01,719 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-12-03 06:47:01,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:47:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-12-03 06:47:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 06:47:01,720 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:47:01,720 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:47:01,720 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:47:01,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:47:01,720 INFO L82 PathProgramCache]: Analyzing trace with hash 461941694, now seen corresponding path program 1 times [2018-12-03 06:47:01,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:47:01,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:47:01,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,721 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:47:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:47:01,799 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 06:47:01,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:47:01,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 06:47:01,799 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:47:01,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 06:47:01,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 06:47:01,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 06:47:01,799 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2018-12-03 06:47:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:47:01,900 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2018-12-03 06:47:01,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 06:47:01,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-03 06:47:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:47:01,901 INFO L225 Difference]: With dead ends: 78 [2018-12-03 06:47:01,901 INFO L226 Difference]: Without dead ends: 52 [2018-12-03 06:47:01,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-03 06:47:01,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-03 06:47:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-12-03 06:47:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-03 06:47:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-12-03 06:47:01,905 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 16 [2018-12-03 06:47:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:47:01,905 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-12-03 06:47:01,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 06:47:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-12-03 06:47:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 06:47:01,906 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:47:01,906 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 06:47:01,906 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:47:01,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:47:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash 461903958, now seen corresponding path program 1 times [2018-12-03 06:47:01,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:47:01,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:47:01,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:47:01,907 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:47:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:47:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:47:01,944 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 06:47:01,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:47:01 BoogieIcfgContainer [2018-12-03 06:47:01,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 06:47:01,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 06:47:01,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 06:47:01,961 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 06:47:01,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:47:01" (3/4) ... [2018-12-03 06:47:01,963 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 06:47:01,988 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_67423e0e-b590-4fe9-bbd0-8438bf9458dc/bin-2019/utaipan/witness.graphml [2018-12-03 06:47:01,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 06:47:01,988 INFO L168 Benchmark]: Toolchain (without parser) took 1161.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 949.6 MB in the beginning and 984.6 MB in the end (delta: -35.1 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,989 INFO L168 Benchmark]: CDTParser took 0.15 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 06:47:01,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,990 INFO L168 Benchmark]: Boogie Preprocessor took 18.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,990 INFO L168 Benchmark]: RCFGBuilder took 196.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,991 INFO L168 Benchmark]: TraceAbstraction took 605.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.3 MB in the end (delta: 89.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,991 INFO L168 Benchmark]: Witness Printer took 26.87 ms. Allocated memory is still 1.1 GB. Free memory was 987.3 MB in the beginning and 984.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:47:01,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 293.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 196.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 605.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.3 MB in the end (delta: 89.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. * Witness Printer took 26.87 ms. Allocated memory is still 1.1 GB. Free memory was 987.3 MB in the beginning and 984.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, x={15:0}] [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head VAL [head={15:0}, malloc(sizeof(SLL))={13:0}, malloc(sizeof(SLL))={15:0}, x={15:0}] [L1013] COND FALSE !(!(((void*)0) != x)) VAL [head={15:0}, malloc(sizeof(SLL))={13:0}, malloc(sizeof(SLL))={15:0}, x={15:0}] [L1015] EXPR x->data VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={13:0}, x={15:0}, x->data=1] [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data VAL [head={15:0}, malloc(sizeof(SLL))={13:0}, malloc(sizeof(SLL))={15:0}, x={15:0}, x->data=1] [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() VAL [head={15:0}, malloc(sizeof(SLL))={13:0}, malloc(sizeof(SLL))={15:0}, x={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 153 SDtfs, 90 SDslu, 131 SDs, 0 SdLazy, 93 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 4 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...