./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/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 3d1a973dcd7009ffcd2eda1338249f4d290fb62a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 17:39:30,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:39:30,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:39:30,915 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:39:30,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:39:30,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:39:30,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:39:30,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:39:30,919 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:39:30,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:39:30,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:39:30,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:39:30,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:39:30,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:39:30,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:39:30,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:39:30,924 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:39:30,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:39:30,927 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:39:30,928 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:39:30,929 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:39:30,930 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:39:30,932 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:39:30,932 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:39:30,932 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:39:30,932 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:39:30,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:39:30,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:39:30,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:39:30,936 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:39:30,936 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:39:30,936 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:39:30,936 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:39:30,937 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:39:30,937 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:39:30,938 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:39:30,939 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:39:30,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:39:30,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:39:30,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:39:30,949 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:39:30,949 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:39:30,949 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:39:30,949 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:39:30,949 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:39:30,950 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:39:30,950 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:39:30,950 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:39:30,950 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:39:30,950 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:39:30,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:39:30,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:39:30,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:39:30,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:39:30,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:39:30,953 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:39:30,954 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_331cc52d-cabe-477a-a816-1d28d9eeecf5/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 -> 3d1a973dcd7009ffcd2eda1338249f4d290fb62a [2018-11-18 17:39:30,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:39:30,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:39:30,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:39:30,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:39:30,992 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:39:30,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:39:31,027 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/data/937f7e0c1/b5a00562009444e5bf3f66c4d913b3cd/FLAG50b5c224e [2018-11-18 17:39:31,461 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:39:31,462 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:39:31,469 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/data/937f7e0c1/b5a00562009444e5bf3f66c4d913b3cd/FLAG50b5c224e [2018-11-18 17:39:31,477 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/data/937f7e0c1/b5a00562009444e5bf3f66c4d913b3cd [2018-11-18 17:39:31,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:39:31,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:39:31,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:39:31,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:39:31,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:39:31,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab0bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31, skipping insertion in model container [2018-11-18 17:39:31,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:39:31,519 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:39:31,718 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:39:31,725 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:39:31,755 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:39:31,824 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:39:31,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31 WrapperNode [2018-11-18 17:39:31,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:39:31,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:39:31,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:39:31,825 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:39:31,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:39:31,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:39:31,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:39:31,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:39:31,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... [2018-11-18 17:39:31,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:39:31,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:39:31,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:39:31,875 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:39:31,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/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 [2018-11-18 17:39:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:39:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:39:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:39:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:39:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:39:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:39:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:39:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 17:39:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 17:39:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:39:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:39:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:39:32,239 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:39:32,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:32 BoogieIcfgContainer [2018-11-18 17:39:32,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:39:32,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:39:32,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:39:32,243 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:39:32,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:39:31" (1/3) ... [2018-11-18 17:39:32,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa17a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:39:32, skipping insertion in model container [2018-11-18 17:39:32,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:31" (2/3) ... [2018-11-18 17:39:32,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa17a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:39:32, skipping insertion in model container [2018-11-18 17:39:32,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:32" (3/3) ... [2018-11-18 17:39:32,247 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:39:32,253 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:39:32,259 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 17:39:32,269 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 17:39:32,292 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:39:32,292 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:39:32,292 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:39:32,292 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:39:32,292 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:39:32,292 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:39:32,292 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:39:32,293 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:39:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-11-18 17:39:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:39:32,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:32,311 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:32,313 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:39:32,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:32,319 INFO L82 PathProgramCache]: Analyzing trace with hash -934809416, now seen corresponding path program 1 times [2018-11-18 17:39:32,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:32,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:32,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,356 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:32,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:32,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:39:32,415 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:39:32,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:39:32,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:39:32,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:39:32,428 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2018-11-18 17:39:32,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:32,446 INFO L93 Difference]: Finished difference Result 129 states and 195 transitions. [2018-11-18 17:39:32,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:39:32,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 17:39:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:32,454 INFO L225 Difference]: With dead ends: 129 [2018-11-18 17:39:32,454 INFO L226 Difference]: Without dead ends: 62 [2018-11-18 17:39:32,457 INFO L604 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 [2018-11-18 17:39:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-18 17:39:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-11-18 17:39:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 17:39:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2018-11-18 17:39:32,486 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 11 [2018-11-18 17:39:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:32,486 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2018-11-18 17:39:32,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:39:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2018-11-18 17:39:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:39:32,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:32,487 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:32,487 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:39:32,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1511834502, now seen corresponding path program 1 times [2018-11-18 17:39:32,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:32,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:32,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,489 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:32,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:32,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:39:32,524 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:39:32,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:39:32,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:39:32,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:39:32,526 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 3 states. [2018-11-18 17:39:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:32,578 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2018-11-18 17:39:32,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:39:32,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 17:39:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:32,580 INFO L225 Difference]: With dead ends: 125 [2018-11-18 17:39:32,580 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 17:39:32,581 INFO L604 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 [2018-11-18 17:39:32,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 17:39:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2018-11-18 17:39:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 17:39:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2018-11-18 17:39:32,585 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 13 [2018-11-18 17:39:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:32,585 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2018-11-18 17:39:32,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:39:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2018-11-18 17:39:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 17:39:32,586 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:32,586 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:32,586 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:39:32,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1009273048, now seen corresponding path program 1 times [2018-11-18 17:39:32,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,588 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:39:32,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:32,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:39:32,656 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:39:32,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:39:32,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:39:32,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:39:32,657 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 4 states. [2018-11-18 17:39:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:32,749 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2018-11-18 17:39:32,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:39:32,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-18 17:39:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:32,751 INFO L225 Difference]: With dead ends: 106 [2018-11-18 17:39:32,751 INFO L226 Difference]: Without dead ends: 104 [2018-11-18 17:39:32,751 INFO L604 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 [2018-11-18 17:39:32,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-18 17:39:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 65. [2018-11-18 17:39:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-18 17:39:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2018-11-18 17:39:32,758 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 18 [2018-11-18 17:39:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:32,758 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2018-11-18 17:39:32,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:39:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2018-11-18 17:39:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 17:39:32,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:32,759 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:32,759 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:39:32,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1490994140, now seen corresponding path program 1 times [2018-11-18 17:39:32,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:32,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:32,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,761 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:39:32,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:32,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 17:39:32,851 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:39:32,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:39:32,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:39:32,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:39:32,852 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 5 states. [2018-11-18 17:39:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:32,959 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2018-11-18 17:39:32,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:39:32,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-18 17:39:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:32,960 INFO L225 Difference]: With dead ends: 112 [2018-11-18 17:39:32,960 INFO L226 Difference]: Without dead ends: 72 [2018-11-18 17:39:32,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:39:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-18 17:39:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2018-11-18 17:39:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 17:39:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2018-11-18 17:39:32,964 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 30 [2018-11-18 17:39:32,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:32,965 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2018-11-18 17:39:32,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:39:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2018-11-18 17:39:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 17:39:32,965 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:32,966 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:32,966 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:39:32,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2123914786, now seen corresponding path program 1 times [2018-11-18 17:39:32,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:32,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:32,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:32,967 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:39:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:39:33,022 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:39:33,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:39:33 BoogieIcfgContainer [2018-11-18 17:39:33,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:39:33,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:39:33,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:39:33,048 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:39:33,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:32" (3/4) ... [2018-11-18 17:39:33,050 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:39:33,087 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_331cc52d-cabe-477a-a816-1d28d9eeecf5/bin-2019/utaipan/witness.graphml [2018-11-18 17:39:33,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:39:33,088 INFO L168 Benchmark]: Toolchain (without parser) took 1608.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.0 MB in the beginning and 1.0 GB in the end (delta: -68.6 MB). Peak memory consumption was 77.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,089 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:39:33,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,091 INFO L168 Benchmark]: Boogie Preprocessor took 26.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,091 INFO L168 Benchmark]: RCFGBuilder took 364.79 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,092 INFO L168 Benchmark]: TraceAbstraction took 807.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,092 INFO L168 Benchmark]: Witness Printer took 39.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:33,094 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 364.79 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 807.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 11.5 GB. * Witness Printer took 39.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] EXPR, FCALL malloc(sizeof(SLL)) [L986] SLL* head = malloc(sizeof(SLL)); [L987] FCALL head->next = ((void*)0) [L988] FCALL head->prev = ((void*)0) [L989] FCALL head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={14:0}] [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] EXPR, FCALL malloc(sizeof(SLL)) [L998] FCALL x->next = malloc(sizeof(SLL)) [L999] EXPR, FCALL x->next [L999] FCALL x->next->prev = x [L1000] EXPR, FCALL x->next [L1000] x = x->next [L1001] FCALL x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=1, x={15:0}] [L1008] COND TRUE \read(marked) [L1009] FCALL x->data = 1 VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=1, x={15:0}] [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=1, x={14:0}] [L1016] COND FALSE !(!(((void*)0) != x)) VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=1, x={14:0}] [L1016] COND FALSE !(0) VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=1, x={14:0}] [L1017] marked = 0 VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=0, x={14:0}] [L1019] EXPR, FCALL x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR, FCALL x->next [L1019] EXPR, FCALL x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=0, x={14:0}, x->next={15:0}, x->next={15:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR, FCALL x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=0, x={14:0}, x->next={15:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR, FCALL x->next [L1026] x = x->next [L1027] EXPR, FCALL x->data VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=0, x={15:0}, x->data=1] [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() VAL [head={14:0}, malloc(sizeof(SLL))={14:0}, malloc(sizeof(SLL))={15:0}, marked=0, x={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 70 locations, 6 error locations. UNSAFE Result, 0.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 260 SDtfs, 201 SDslu, 171 SDs, 0 SdLazy, 93 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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, 43 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 3718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...