./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular_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_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/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 b651d63eb42259dfd3a213a6671e4c58ee528ad0 ............................................................................................................................................................................................................................................................................................................................................................................. 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 02:33:08,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 02:33:08,778 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 02:33:08,787 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 02:33:08,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 02:33:08,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 02:33:08,789 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 02:33:08,790 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 02:33:08,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 02:33:08,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 02:33:08,793 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 02:33:08,793 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 02:33:08,794 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 02:33:08,795 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 02:33:08,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 02:33:08,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 02:33:08,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 02:33:08,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 02:33:08,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 02:33:08,801 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 02:33:08,801 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 02:33:08,802 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 02:33:08,804 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 02:33:08,804 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 02:33:08,805 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 02:33:08,805 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 02:33:08,806 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 02:33:08,807 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 02:33:08,807 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 02:33:08,808 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 02:33:08,808 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 02:33:08,809 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 02:33:08,809 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 02:33:08,809 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 02:33:08,810 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 02:33:08,810 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 02:33:08,810 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 02:33:08,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 02:33:08,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 02:33:08,821 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 02:33:08,822 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 02:33:08,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 02:33:08,822 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 02:33:08,822 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 02:33:08,822 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 02:33:08,822 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 02:33:08,822 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 02:33:08,823 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 02:33:08,823 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 02:33:08,823 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 02:33:08,823 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 02:33:08,824 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 02:33:08,825 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 02:33:08,825 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 02:33:08,825 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 02:33:08,825 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 02:33:08,826 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 02:33:08,826 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 02:33:08,826 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 02:33:08,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:33:08,826 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 02:33:08,826 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 02:33:08,827 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 02:33:08,827 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 02:33:08,827 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 02:33:08,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 02:33:08,827 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 02:33:08,827 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_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/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 -> b651d63eb42259dfd3a213a6671e4c58ee528ad0 [2018-12-03 02:33:08,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 02:33:08,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 02:33:08,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 02:33:08,858 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 02:33:08,858 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 02:33:08,858 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/../../sv-benchmarks/c/forester-heap/sll-circular_false-unreach-call_false-valid-memcleanup.i [2018-12-03 02:33:08,896 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/data/16df39bb2/1787e75d5864469c96da9527c944cb7c/FLAG96b4215c7 [2018-12-03 02:33:09,220 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 02:33:09,221 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/sv-benchmarks/c/forester-heap/sll-circular_false-unreach-call_false-valid-memcleanup.i [2018-12-03 02:33:09,226 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/data/16df39bb2/1787e75d5864469c96da9527c944cb7c/FLAG96b4215c7 [2018-12-03 02:33:09,234 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/data/16df39bb2/1787e75d5864469c96da9527c944cb7c [2018-12-03 02:33:09,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 02:33:09,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 02:33:09,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 02:33:09,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 02:33:09,241 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 02:33:09,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672981cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09, skipping insertion in model container [2018-12-03 02:33:09,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 02:33:09,271 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 02:33:09,412 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:33:09,460 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 02:33:09,486 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:33:09,515 INFO L195 MainTranslator]: Completed translation [2018-12-03 02:33:09,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09 WrapperNode [2018-12-03 02:33:09,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 02:33:09,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 02:33:09,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 02:33:09,516 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 02:33:09,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 02:33:09,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 02:33:09,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 02:33:09,534 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 02:33:09,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... [2018-12-03 02:33:09,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 02:33:09,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 02:33:09,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 02:33:09,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 02:33:09,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/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 02:33:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 02:33:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 02:33:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 02:33:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 02:33:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 02:33:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 02:33:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 02:33:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 02:33:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 02:33:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 02:33:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 02:33:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 02:33:09,747 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 02:33:09,747 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-03 02:33:09,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:33:09 BoogieIcfgContainer [2018-12-03 02:33:09,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 02:33:09,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 02:33:09,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 02:33:09,750 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 02:33:09,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 02:33:09" (1/3) ... [2018-12-03 02:33:09,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed54707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:33:09, skipping insertion in model container [2018-12-03 02:33:09,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:33:09" (2/3) ... [2018-12-03 02:33:09,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed54707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:33:09, skipping insertion in model container [2018-12-03 02:33:09,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:33:09" (3/3) ... [2018-12-03 02:33:09,752 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-circular_false-unreach-call_false-valid-memcleanup.i [2018-12-03 02:33:09,758 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 02:33:09,763 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 02:33:09,773 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 02:33:09,791 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 02:33:09,791 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 02:33:09,791 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 02:33:09,791 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 02:33:09,791 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 02:33:09,792 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 02:33:09,792 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 02:33:09,792 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 02:33:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-12-03 02:33:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 02:33:09,805 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:33:09,806 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:33:09,807 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:33:09,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:33:09,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1481134361, now seen corresponding path program 1 times [2018-12-03 02:33:09,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:33:09,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:09,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:33:09,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:09,845 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:33:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:33:09,892 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 02:33:09,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:33:09,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 02:33:09,894 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:33:09,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 02:33:09,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 02:33:09,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:33:09,905 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-12-03 02:33:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:33:09,917 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2018-12-03 02:33:09,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 02:33:09,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-03 02:33:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:33:09,924 INFO L225 Difference]: With dead ends: 70 [2018-12-03 02:33:09,924 INFO L226 Difference]: Without dead ends: 30 [2018-12-03 02:33:09,926 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 02:33:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-03 02:33:09,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-03 02:33:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-03 02:33:09,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-12-03 02:33:09,946 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2018-12-03 02:33:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:33:09,947 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-12-03 02:33:09,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 02:33:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-12-03 02:33:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 02:33:09,947 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:33:09,947 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:33:09,947 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:33:09,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:33:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1288506705, now seen corresponding path program 1 times [2018-12-03 02:33:09,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:33:09,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:09,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:33:09,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:09,949 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:33:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:33:10,034 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 02:33:10,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:33:10,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 02:33:10,035 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:33:10,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 02:33:10,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 02:33:10,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 02:33:10,036 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2018-12-03 02:33:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:33:10,083 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-03 02:33:10,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 02:33:10,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-03 02:33:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:33:10,085 INFO L225 Difference]: With dead ends: 46 [2018-12-03 02:33:10,085 INFO L226 Difference]: Without dead ends: 42 [2018-12-03 02:33:10,085 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 02:33:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-03 02:33:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2018-12-03 02:33:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-03 02:33:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2018-12-03 02:33:10,089 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2018-12-03 02:33:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:33:10,089 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2018-12-03 02:33:10,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 02:33:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2018-12-03 02:33:10,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 02:33:10,089 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:33:10,090 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:33:10,090 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:33:10,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:33:10,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1834766102, now seen corresponding path program 1 times [2018-12-03 02:33:10,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:33:10,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:10,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:33:10,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:10,091 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:33:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:33:10,111 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 02:33:10,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:33:10,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 02:33:10,111 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:33:10,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 02:33:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 02:33:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 02:33:10,112 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2018-12-03 02:33:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:33:10,123 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2018-12-03 02:33:10,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 02:33:10,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-12-03 02:33:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:33:10,125 INFO L225 Difference]: With dead ends: 75 [2018-12-03 02:33:10,125 INFO L226 Difference]: Without dead ends: 53 [2018-12-03 02:33:10,126 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 02:33:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-03 02:33:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2018-12-03 02:33:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-03 02:33:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-12-03 02:33:10,130 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2018-12-03 02:33:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:33:10,130 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-12-03 02:33:10,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 02:33:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-12-03 02:33:10,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 02:33:10,131 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:33:10,131 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 02:33:10,131 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:33:10,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:33:10,131 INFO L82 PathProgramCache]: Analyzing trace with hash -959873059, now seen corresponding path program 1 times [2018-12-03 02:33:10,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:33:10,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:10,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:33:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:33:10,133 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:33:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 02:33:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 02:33:10,167 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 02:33:10,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 02:33:10 BoogieIcfgContainer [2018-12-03 02:33:10,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 02:33:10,185 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 02:33:10,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 02:33:10,185 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 02:33:10,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:33:09" (3/4) ... [2018-12-03 02:33:10,187 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 02:33:10,213 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f4cff3e3-0f80-46b9-86d8-9ba17767cb80/bin-2019/utaipan/witness.graphml [2018-12-03 02:33:10,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 02:33:10,213 INFO L168 Benchmark]: Toolchain (without parser) took 976.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -112.9 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2018-12-03 02:33:10,214 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:33:10,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -200.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:33:10,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.57 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 02:33:10,215 INFO L168 Benchmark]: Boogie Preprocessor took 19.22 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-03 02:33:10,215 INFO L168 Benchmark]: RCFGBuilder took 194.47 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-03 02:33:10,216 INFO L168 Benchmark]: TraceAbstraction took 436.30 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: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2018-12-03 02:33:10,216 INFO L168 Benchmark]: Witness Printer took 28.24 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 02:33:10,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -200.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.22 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 194.47 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 436.30 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: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. * Witness Printer took 28.24 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: 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 = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; VAL [head={12:0}, malloc(sizeof(SLL))={12:0}, state=1, x={12:0}] [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) VAL [head={12:0}, malloc(sizeof(SLL))={12:0}, state=1, x={12:0}] [L1019] EXPR x->data VAL [head={12:0}, malloc(sizeof(SLL))={12:0}, state=1, x={12:0}, x->data=1] [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={12:0}, malloc(sizeof(SLL))={12:0}, state=1, x={12:0}, x->data=1, x->next={12:0}, x->next={12:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() VAL [head={12:0}, malloc(sizeof(SLL))={12:0}, state=1, x={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 3 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 44 SDslu, 61 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, 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, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...